/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/popl20-more/min-fun-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 00:07:55,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 00:07:55,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 00:07:55,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 00:07:55,725 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 [2021-06-06 00:07:55,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 00:07:55,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 00:07:55,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 00:07:55,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 00:07:55,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 00:07:55,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 00:07:55,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 00:07:55,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 00:07:55,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 00:07:55,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 00:07:55,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 00:07:55,745 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 00:07:55,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 00:07:55,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 00:07:55,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 00:07:55,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 00:07:55,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 00:07:55,955 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 00:07:55,957 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 00:07:55,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun-alt.wvr.bpl [2021-06-06 00:07:55,957 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun-alt.wvr.bpl' [2021-06-06 00:07:55,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 00:07:55,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 00:07:55,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 00:07:55,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 00:07:55,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 00:07:55,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:55,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 00:07:56,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 00:07:56,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 00:07:56,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 00:07:56,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/1) ... [2021-06-06 00:07:56,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 00:07:56,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 00:07:56,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 00:07:56,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 00:07:56,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (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 [2021-06-06 00:07:56,083 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 00:07:56,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 00:07:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 00:07:56,083 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 00:07:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 00:07:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 00:07:56,084 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 00:07:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 00:07:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 00:07:56,085 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 00:07:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 00:07:56,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 00:07:56,086 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 00:07:56,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 00:07:56,268 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 00:07:56,269 INFO L202 PluginConnector]: Adding new model min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 12:07:56 BoogieIcfgContainer [2021-06-06 00:07:56,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 00:07:56,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 00:07:56,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 00:07:56,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 00:07:56,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:07:55" (1/2) ... [2021-06-06 00:07:56,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20451004 and model type min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 12:07:56, skipping insertion in model container [2021-06-06 00:07:56,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 12:07:56" (2/2) ... [2021-06-06 00:07:56,274 INFO L111 eAbstractionObserver]: Analyzing ICFG min-fun-alt.wvr.bpl [2021-06-06 00:07:56,278 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 00:07:56,278 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 00:07:56,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 00:07:56,285 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 00:07:56,339 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 00:07:56,362 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-06 00:07:56,377 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 00:07:56,377 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 00:07:56,377 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 00:07:56,377 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 00:07:56,378 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 00:07:56,378 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 00:07:56,378 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 00:07:56,378 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 00:07:56,383 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-06 00:07:56,408 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 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) [2021-06-06 00:07:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 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) [2021-06-06 00:07:56,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-06 00:07:56,418 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:56,418 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:56,418 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:56,424 INFO L82 PathProgramCache]: Analyzing trace with hash -520695315, now seen corresponding path program 1 times [2021-06-06 00:07:56,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:56,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879173085] [2021-06-06 00:07:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:56,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:56,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879173085] [2021-06-06 00:07:56,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879173085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 00:07:56,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 00:07:56,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 00:07:56,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031940149] [2021-06-06 00:07:56,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 00:07:56,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:56,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 00:07:56,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 00:07:56,567 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 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) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:56,588 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-06 00:07:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 00:07:56,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2021-06-06 00:07:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:56,597 INFO L225 Difference]: With dead ends: 217 [2021-06-06 00:07:56,597 INFO L226 Difference]: Without dead ends: 202 [2021-06-06 00:07:56,598 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 00:07:56,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-06 00:07:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-06 00:07:56,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-06 00:07:56,651 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-06 00:07:56,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:56,652 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-06 00:07:56,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-06 00:07:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-06 00:07:56,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:56,654 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:56,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 00:07:56,654 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash -411683507, now seen corresponding path program 1 times [2021-06-06 00:07:56,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:56,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477595746] [2021-06-06 00:07:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:07:56,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:56,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477595746] [2021-06-06 00:07:56,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477595746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 00:07:56,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 00:07:56,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 00:07:56,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644734419] [2021-06-06 00:07:56,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 00:07:56,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:56,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 00:07:56,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 00:07:56,723 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-06-06 00:07:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:56,767 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-06 00:07:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 00:07:56,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2021-06-06 00:07:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:56,771 INFO L225 Difference]: With dead ends: 158 [2021-06-06 00:07:56,771 INFO L226 Difference]: Without dead ends: 158 [2021-06-06 00:07:56,772 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-06 00:07:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-06 00:07:56,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-06 00:07:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-06 00:07:56,791 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-06 00:07:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:56,791 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-06 00:07:56,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2021-06-06 00:07:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-06 00:07:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-06 00:07:56,796 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:56,796 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:56,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 00:07:56,796 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1197401099, now seen corresponding path program 1 times [2021-06-06 00:07:56,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:56,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577782714] [2021-06-06 00:07:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:07:56,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:56,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577782714] [2021-06-06 00:07:56,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577782714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 00:07:56,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 00:07:56,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 00:07:56,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407317720] [2021-06-06 00:07:56,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 00:07:56,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:56,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 00:07:56,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 00:07:56,839 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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) [2021-06-06 00:07:56,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:56,881 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-06 00:07:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 00:07:56,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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 20 [2021-06-06 00:07:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:56,884 INFO L225 Difference]: With dead ends: 183 [2021-06-06 00:07:56,886 INFO L226 Difference]: Without dead ends: 183 [2021-06-06 00:07:56,888 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-06 00:07:56,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-06 00:07:56,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-06 00:07:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:56,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-06 00:07:56,898 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-06 00:07:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:56,898 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-06 00:07:56,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 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) [2021-06-06 00:07:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-06 00:07:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:07:56,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:56,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:56,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-06 00:07:56,899 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:56,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:56,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1416433813, now seen corresponding path program 1 times [2021-06-06 00:07:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:56,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112761208] [2021-06-06 00:07:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:57,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:57,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112761208] [2021-06-06 00:07:57,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112761208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:57,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911644070] [2021-06-06 00:07:57,153 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 [2021-06-06 00:07:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:57,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-06 00:07:57,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:57,477 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 18 treesize of output 12 [2021-06-06 00:07:57,479 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:57,482 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 16 treesize of output 10 [2021-06-06 00:07:57,483 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:57,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 15 [2021-06-06 00:07:57,497 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:57,499 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 23 treesize of output 15 [2021-06-06 00:07:57,501 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:57,502 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-06 00:07:57,503 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:57,505 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 16 treesize of output 10 [2021-06-06 00:07:57,506 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:57,523 INFO L628 ElimStorePlain]: treesize reduction 18, result has 58.1 percent of original size [2021-06-06 00:07:57,525 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:07:57,526 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:178, output treesize:17 [2021-06-06 00:07:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:57,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911644070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:57,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:57,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:07:57,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688567766] [2021-06-06 00:07:57,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:07:57,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:07:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:07:57,551 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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) [2021-06-06 00:07:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:57,708 INFO L93 Difference]: Finished difference Result 298 states and 839 transitions. [2021-06-06 00:07:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-06 00:07:57,709 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 22 [2021-06-06 00:07:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:57,710 INFO L225 Difference]: With dead ends: 298 [2021-06-06 00:07:57,710 INFO L226 Difference]: Without dead ends: 283 [2021-06-06 00:07:57,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 273.0ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:07:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-06-06 00:07:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 224. [2021-06-06 00:07:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-06 00:07:57,715 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-06 00:07:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:57,715 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-06 00:07:57,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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) [2021-06-06 00:07:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-06 00:07:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:07:57,716 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:57,716 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:57,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:57,937 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:57,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:57,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1584242905, now seen corresponding path program 2 times [2021-06-06 00:07:57,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:57,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608436899] [2021-06-06 00:07:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:58,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:58,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608436899] [2021-06-06 00:07:58,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608436899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:58,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084489106] [2021-06-06 00:07:58,118 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 [2021-06-06 00:07:58,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:07:58,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:58,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 00:07:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:58,321 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:07:58,322 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-06 00:07:58,323 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:58,332 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:07:58,332 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-06 00:07:58,333 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:58,341 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:58,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-06 00:07:58,346 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:58,352 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:58,353 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:07:58,354 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:58,400 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:07:58,418 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:07:58,418 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:124, output treesize:116 [2021-06-06 00:07:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:58,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084489106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:58,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:58,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-06 00:07:58,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166992599] [2021-06-06 00:07:58,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:07:58,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:58,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:07:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:07:58,546 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:59,053 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions. [2021-06-06 00:07:59,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 00:07:59,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 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 22 [2021-06-06 00:07:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:59,055 INFO L225 Difference]: With dead ends: 374 [2021-06-06 00:07:59,055 INFO L226 Difference]: Without dead ends: 359 [2021-06-06 00:07:59,056 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 569.3ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:07:59,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-06-06 00:07:59,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229. [2021-06-06 00:07:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:59,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-06 00:07:59,067 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-06 00:07:59,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:59,070 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-06 00:07:59,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-06 00:07:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:07:59,071 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:59,071 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:59,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-06 00:07:59,287 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:59,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1285469457, now seen corresponding path program 3 times [2021-06-06 00:07:59,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:59,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737252112] [2021-06-06 00:07:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:07:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:59,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:07:59,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737252112] [2021-06-06 00:07:59,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737252112] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:59,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144000641] [2021-06-06 00:07:59,427 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 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 [2021-06-06 00:07:59,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-06 00:07:59,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:07:59,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-06 00:07:59,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:07:59,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 10 [2021-06-06 00:07:59,562 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:59,564 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-06 00:07:59,565 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:59,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 10 [2021-06-06 00:07:59,567 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:59,569 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 18 treesize of output 12 [2021-06-06 00:07:59,570 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:59,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 15 [2021-06-06 00:07:59,573 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:59,575 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 23 treesize of output 15 [2021-06-06 00:07:59,575 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:07:59,587 INFO L628 ElimStorePlain]: treesize reduction 10, result has 63.0 percent of original size [2021-06-06 00:07:59,587 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:07:59,587 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 1 variables, input treesize:130, output treesize:17 [2021-06-06 00:07:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:07:59,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144000641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:07:59,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:07:59,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-06 00:07:59,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5138507] [2021-06-06 00:07:59,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:07:59,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:07:59,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:07:59,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:07:59,612 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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) [2021-06-06 00:07:59,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:07:59,748 INFO L93 Difference]: Finished difference Result 363 states and 1038 transitions. [2021-06-06 00:07:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 00:07:59,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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 22 [2021-06-06 00:07:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:07:59,750 INFO L225 Difference]: With dead ends: 363 [2021-06-06 00:07:59,750 INFO L226 Difference]: Without dead ends: 348 [2021-06-06 00:07:59,750 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 179.7ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:07:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-06 00:07:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 241. [2021-06-06 00:07:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:07:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-06 00:07:59,755 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-06 00:07:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:07:59,755 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-06 00:07:59,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 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) [2021-06-06 00:07:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-06 00:07:59,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:07:59,756 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:07:59,756 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:07:59,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:07:59,969 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:07:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:07:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash 285356143, now seen corresponding path program 4 times [2021-06-06 00:07:59,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:07:59,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19632944] [2021-06-06 00:07:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:07:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:00,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:00,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19632944] [2021-06-06 00:08:00,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19632944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:00,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532869874] [2021-06-06 00:08:00,079 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 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 [2021-06-06 00:08:00,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:00,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:00,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-06 00:08:00,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:00,270 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:00,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-06 00:08:00,272 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:00,278 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:00,278 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-06 00:08:00,284 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:00,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:00,324 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:00,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-06 00:08:00,326 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:00,331 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:00,332 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:08:00,333 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:00,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:00,376 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:08:00,377 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:71 [2021-06-06 00:08:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:00,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532869874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:00,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:00,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:00,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126819191] [2021-06-06 00:08:00,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:00,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:00,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:00,458 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:00,716 INFO L93 Difference]: Finished difference Result 425 states and 1233 transitions. [2021-06-06 00:08:00,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 00:08:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2021-06-06 00:08:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:00,718 INFO L225 Difference]: With dead ends: 425 [2021-06-06 00:08:00,718 INFO L226 Difference]: Without dead ends: 410 [2021-06-06 00:08:00,719 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 303.7ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:08:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-06-06 00:08:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 247. [2021-06-06 00:08:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-06 00:08:00,724 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-06 00:08:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:00,724 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-06 00:08:00,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-06 00:08:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:00,724 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:00,725 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:00,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:00,937 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash -703639479, now seen corresponding path program 5 times [2021-06-06 00:08:00,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:00,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590954056] [2021-06-06 00:08:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:00,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:00,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590954056] [2021-06-06 00:08:00,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590954056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:00,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791947696] [2021-06-06 00:08:00,973 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 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 [2021-06-06 00:08:01,002 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:01,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:01,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:01,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:01,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791947696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:01,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:01,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:01,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539324445] [2021-06-06 00:08:01,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:01,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:01,064 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:01,398 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-06 00:08:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:08:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:01,401 INFO L225 Difference]: With dead ends: 619 [2021-06-06 00:08:01,401 INFO L226 Difference]: Without dead ends: 619 [2021-06-06 00:08:01,401 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 186.0ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:08:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-06 00:08:01,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-06 00:08:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 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) [2021-06-06 00:08:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-06 00:08:01,408 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-06 00:08:01,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:01,408 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-06 00:08:01,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-06 00:08:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:01,409 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:01,409 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:01,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-06 00:08:01,625 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:01,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1679958323, now seen corresponding path program 6 times [2021-06-06 00:08:01,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:01,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292457317] [2021-06-06 00:08:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:01,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:01,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292457317] [2021-06-06 00:08:01,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292457317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:01,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788975392] [2021-06-06 00:08:01,663 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 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 [2021-06-06 00:08:01,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:01,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:01,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:01,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:01,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788975392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:01,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:01,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406383055] [2021-06-06 00:08:01,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:01,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:01,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:01,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:01,774 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:02,384 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-06 00:08:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:08:02,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:02,388 INFO L225 Difference]: With dead ends: 1078 [2021-06-06 00:08:02,388 INFO L226 Difference]: Without dead ends: 1078 [2021-06-06 00:08:02,389 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 365.8ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:08:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-06 00:08:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-06 00:08:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 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) [2021-06-06 00:08:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-06 00:08:02,399 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-06 00:08:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:02,399 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-06 00:08:02,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-06 00:08:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:02,399 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:02,400 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:02,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:02,609 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:02,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1113006243, now seen corresponding path program 7 times [2021-06-06 00:08:02,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:02,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565897531] [2021-06-06 00:08:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:02,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:02,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565897531] [2021-06-06 00:08:02,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565897531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:02,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931360356] [2021-06-06 00:08:02,655 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 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 [2021-06-06 00:08:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:02,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:02,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:02,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931360356] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:02,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:02,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:02,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306243913] [2021-06-06 00:08:02,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:02,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:02,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:02,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:02,757 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:03,309 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-06 00:08:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:08:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:03,312 INFO L225 Difference]: With dead ends: 951 [2021-06-06 00:08:03,312 INFO L226 Difference]: Without dead ends: 951 [2021-06-06 00:08:03,313 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 347.1ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:08:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-06 00:08:03,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-06 00:08:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-06 00:08:03,321 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-06 00:08:03,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:03,322 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-06 00:08:03,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:03,322 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-06 00:08:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:03,322 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:03,323 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:03,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:03,537 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:03,537 INFO L82 PathProgramCache]: Analyzing trace with hash -176867571, now seen corresponding path program 1 times [2021-06-06 00:08:03,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:03,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439439092] [2021-06-06 00:08:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:03,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:03,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439439092] [2021-06-06 00:08:03,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439439092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:03,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133689577] [2021-06-06 00:08:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-06 00:08:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:03,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 00:08:03,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:03,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133689577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:03,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:03,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 00:08:03,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882556940] [2021-06-06 00:08:03,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 00:08:03,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:03,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 00:08:03,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 00:08:03,632 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 00:08:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:03,730 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-06 00:08:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 00:08:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 24 [2021-06-06 00:08:03,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:03,733 INFO L225 Difference]: With dead ends: 669 [2021-06-06 00:08:03,733 INFO L226 Difference]: Without dead ends: 663 [2021-06-06 00:08:03,733 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:03,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-06 00:08:03,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-06 00:08:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-06 00:08:03,742 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-06 00:08:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:03,742 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-06 00:08:03,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 00:08:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-06 00:08:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:03,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:03,743 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:03,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-06 00:08:03,944 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:03,944 INFO L82 PathProgramCache]: Analyzing trace with hash -613836279, now seen corresponding path program 8 times [2021-06-06 00:08:03,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:03,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919940794] [2021-06-06 00:08:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:03,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:03,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919940794] [2021-06-06 00:08:03,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919940794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:03,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253453010] [2021-06-06 00:08:03,975 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 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 [2021-06-06 00:08:03,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:03,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:03,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:04,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253453010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:04,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:04,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 00:08:04,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939067383] [2021-06-06 00:08:04,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:04,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:04,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:04,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:04,068 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:04,239 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-06 00:08:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:08:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:04,241 INFO L225 Difference]: With dead ends: 710 [2021-06-06 00:08:04,241 INFO L226 Difference]: Without dead ends: 672 [2021-06-06 00:08:04,242 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:08:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-06 00:08:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-06 00:08:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-06 00:08:04,252 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-06 00:08:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:04,252 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-06 00:08:04,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-06 00:08:04,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:04,253 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:04,253 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:04,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:04,470 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:04,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1319793611, now seen corresponding path program 2 times [2021-06-06 00:08:04,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:04,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419633485] [2021-06-06 00:08:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:04,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:04,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419633485] [2021-06-06 00:08:04,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419633485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:04,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209580396] [2021-06-06 00:08:04,492 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 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 [2021-06-06 00:08:04,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:04,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:04,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 00:08:04,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:04,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209580396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:04,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:04,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 00:08:04,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494360536] [2021-06-06 00:08:04,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 00:08:04,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 00:08:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 00:08:04,570 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 00:08:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:04,659 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-06 00:08:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 00:08:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 24 [2021-06-06 00:08:04,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:04,663 INFO L225 Difference]: With dead ends: 830 [2021-06-06 00:08:04,663 INFO L226 Difference]: Without dead ends: 830 [2021-06-06 00:08:04,663 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-06 00:08:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-06 00:08:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:04,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-06 00:08:04,674 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-06 00:08:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:04,674 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-06 00:08:04,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 00:08:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-06 00:08:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:04,675 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:04,676 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:04,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:04,889 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:04,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:04,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1628492119, now seen corresponding path program 9 times [2021-06-06 00:08:04,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:04,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766680184] [2021-06-06 00:08:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:04,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:04,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766680184] [2021-06-06 00:08:04,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766680184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:04,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145751979] [2021-06-06 00:08:04,928 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 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 [2021-06-06 00:08:04,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:04,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:04,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:04,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:05,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145751979] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:05,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:05,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:08:05,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094982591] [2021-06-06 00:08:05,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:05,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:05,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:05,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:05,016 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-06-06 00:08:05,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:05,280 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-06 00:08:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:08:05,280 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 24 [2021-06-06 00:08:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:05,284 INFO L225 Difference]: With dead ends: 1196 [2021-06-06 00:08:05,284 INFO L226 Difference]: Without dead ends: 1196 [2021-06-06 00:08:05,285 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:08:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-06 00:08:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-06 00:08:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-06 00:08:05,298 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-06 00:08:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:05,299 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-06 00:08:05,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-06-06 00:08:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-06 00:08:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:05,300 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:05,300 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:05,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-06 00:08:05,509 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:05,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1881561083, now seen corresponding path program 10 times [2021-06-06 00:08:05,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:05,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252281881] [2021-06-06 00:08:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:05,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:05,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252281881] [2021-06-06 00:08:05,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252281881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:05,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247105266] [2021-06-06 00:08:05,544 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 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 [2021-06-06 00:08:05,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:05,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:05,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:05,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:05,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247105266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:05,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:05,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:08:05,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530985115] [2021-06-06 00:08:05,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:05,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:05,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:05,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:05,636 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-06-06 00:08:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:05,987 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-06 00:08:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:08:05,987 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 24 [2021-06-06 00:08:05,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:05,992 INFO L225 Difference]: With dead ends: 1492 [2021-06-06 00:08:05,992 INFO L226 Difference]: Without dead ends: 1492 [2021-06-06 00:08:05,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 200.2ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:08:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-06 00:08:06,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-06 00:08:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-06 00:08:06,008 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-06 00:08:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:06,008 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-06 00:08:06,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-06-06 00:08:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-06 00:08:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:06,009 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:06,009 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:06,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-06 00:08:06,229 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:06,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:06,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1330383557, now seen corresponding path program 11 times [2021-06-06 00:08:06,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:06,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118789476] [2021-06-06 00:08:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:06,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:06,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118789476] [2021-06-06 00:08:06,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118789476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:06,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952308343] [2021-06-06 00:08:06,266 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 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 [2021-06-06 00:08:06,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:06,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:06,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:06,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:06,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952308343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:06,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:06,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 00:08:06,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694178959] [2021-06-06 00:08:06,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:06,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:06,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:06,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:06,356 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:06,541 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-06 00:08:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:08:06,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:06,546 INFO L225 Difference]: With dead ends: 1258 [2021-06-06 00:08:06,546 INFO L226 Difference]: Without dead ends: 1248 [2021-06-06 00:08:06,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:08:06,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-06 00:08:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-06 00:08:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-06 00:08:06,561 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-06 00:08:06,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:06,561 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-06 00:08:06,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-06 00:08:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:06,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:06,562 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:06,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-06-06 00:08:06,777 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:06,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1493505621, now seen corresponding path program 12 times [2021-06-06 00:08:06,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:06,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130359096] [2021-06-06 00:08:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:06,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:06,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:06,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130359096] [2021-06-06 00:08:06,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130359096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:06,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235082267] [2021-06-06 00:08:06,808 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 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 [2021-06-06 00:08:06,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:06,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:06,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:06,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:06,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235082267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:06,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:06,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 00:08:06,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073972013] [2021-06-06 00:08:06,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:06,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:06,902 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:07,104 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-06 00:08:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:08:07,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:07,108 INFO L225 Difference]: With dead ends: 1329 [2021-06-06 00:08:07,108 INFO L226 Difference]: Without dead ends: 1329 [2021-06-06 00:08:07,109 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:08:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-06 00:08:07,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-06 00:08:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-06 00:08:07,141 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-06 00:08:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:07,141 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-06 00:08:07,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-06 00:08:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:07,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:07,143 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:07,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:07,353 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:07,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1926382225, now seen corresponding path program 13 times [2021-06-06 00:08:07,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:07,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812182403] [2021-06-06 00:08:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:07,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:07,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812182403] [2021-06-06 00:08:07,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812182403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:07,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909951887] [2021-06-06 00:08:07,380 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 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 [2021-06-06 00:08:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:07,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:07,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:07,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909951887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:07,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:07,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:08:07,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909761823] [2021-06-06 00:08:07,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:07,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:07,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:07,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:07,458 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-06-06 00:08:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:07,737 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-06 00:08:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:08:07,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 24 [2021-06-06 00:08:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:07,742 INFO L225 Difference]: With dead ends: 1548 [2021-06-06 00:08:07,742 INFO L226 Difference]: Without dead ends: 1544 [2021-06-06 00:08:07,742 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 164.0ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:08:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-06 00:08:07,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-06 00:08:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-06 00:08:07,759 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-06 00:08:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:07,759 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-06 00:08:07,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-06-06 00:08:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-06 00:08:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:07,760 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:07,761 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:07,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:07,977 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:07,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2096575881, now seen corresponding path program 14 times [2021-06-06 00:08:07,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:07,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755340339] [2021-06-06 00:08:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:08,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:08,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755340339] [2021-06-06 00:08:08,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755340339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:08,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704757963] [2021-06-06 00:08:08,004 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 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 [2021-06-06 00:08:08,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:08,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:08,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:08,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:08,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704757963] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:08,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:08,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:08,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378773964] [2021-06-06 00:08:08,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:08,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:08,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:08,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:08,098 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:08,718 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-06 00:08:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:08:08,719 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:08,727 INFO L225 Difference]: With dead ends: 2734 [2021-06-06 00:08:08,727 INFO L226 Difference]: Without dead ends: 2734 [2021-06-06 00:08:08,728 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 370.0ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:08:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-06 00:08:08,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-06 00:08:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-06 00:08:08,752 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-06 00:08:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:08,752 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-06 00:08:08,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-06 00:08:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:08,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:08,754 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:08,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:08,961 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1631439335, now seen corresponding path program 15 times [2021-06-06 00:08:08,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:08,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949137055] [2021-06-06 00:08:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:08,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:08,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949137055] [2021-06-06 00:08:08,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949137055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:08,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303413196] [2021-06-06 00:08:08,990 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 [2021-06-06 00:08:09,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:09,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:09,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:09,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:09,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303413196] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:09,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:09,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:09,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570136177] [2021-06-06 00:08:09,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:09,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:09,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:09,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:09,083 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:09,661 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-06 00:08:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:08:09,661 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:09,667 INFO L225 Difference]: With dead ends: 2693 [2021-06-06 00:08:09,667 INFO L226 Difference]: Without dead ends: 2693 [2021-06-06 00:08:09,668 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 371.1ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:08:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-06 00:08:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-06 00:08:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-06 00:08:09,695 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-06 00:08:09,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:09,695 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-06 00:08:09,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-06 00:08:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:09,696 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:09,696 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:09,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-06 00:08:09,913 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1491182103, now seen corresponding path program 16 times [2021-06-06 00:08:09,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:09,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152369135] [2021-06-06 00:08:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:09,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:09,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152369135] [2021-06-06 00:08:09,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152369135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:09,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422933400] [2021-06-06 00:08:09,949 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 [2021-06-06 00:08:09,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:09,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:09,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:09,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:10,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422933400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:10,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:10,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:10,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611298744] [2021-06-06 00:08:10,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:10,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:10,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:10,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:10,038 INFO L87 Difference]: Start difference. First operand 831 states and 2730 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) [2021-06-06 00:08:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:10,546 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-06 00:08:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:08:10,546 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 24 [2021-06-06 00:08:10,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:10,551 INFO L225 Difference]: With dead ends: 2677 [2021-06-06 00:08:10,551 INFO L226 Difference]: Without dead ends: 2677 [2021-06-06 00:08:10,552 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 299.3ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:08:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-06 00:08:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-06 00:08:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-06 00:08:10,575 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-06 00:08:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:10,576 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-06 00:08:10,576 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) [2021-06-06 00:08:10,576 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-06 00:08:10,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:10,577 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:10,577 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:10,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-06 00:08:10,793 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:10,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1572558191, now seen corresponding path program 17 times [2021-06-06 00:08:10,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:10,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358587919] [2021-06-06 00:08:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:10,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:10,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358587919] [2021-06-06 00:08:10,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358587919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:10,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694404666] [2021-06-06 00:08:10,819 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 [2021-06-06 00:08:10,841 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:08:10,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:10,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:10,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694404666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:10,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:10,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:10,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062982789] [2021-06-06 00:08:10,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:10,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:10,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:10,892 INFO L87 Difference]: Start difference. First operand 845 states and 2785 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) [2021-06-06 00:08:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:11,348 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-06 00:08:11,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:08:11,349 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 24 [2021-06-06 00:08:11,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:11,353 INFO L225 Difference]: With dead ends: 2474 [2021-06-06 00:08:11,353 INFO L226 Difference]: Without dead ends: 2470 [2021-06-06 00:08:11,353 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 268.9ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:08:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-06 00:08:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-06 00:08:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-06 00:08:11,374 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-06 00:08:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:11,374 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-06 00:08:11,374 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) [2021-06-06 00:08:11,374 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-06 00:08:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:11,375 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:11,375 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:11,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-06 00:08:11,591 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1791751889, now seen corresponding path program 18 times [2021-06-06 00:08:11,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:11,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052582631] [2021-06-06 00:08:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:11,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:11,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:11,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052582631] [2021-06-06 00:08:11,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052582631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:11,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470495339] [2021-06-06 00:08:11,618 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 [2021-06-06 00:08:11,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:08:11,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:11,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:11,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:11,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:11,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470495339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:11,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:11,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:11,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740364700] [2021-06-06 00:08:11,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:11,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:11,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:11,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:11,715 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:12,266 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-06 00:08:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:08:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 24 [2021-06-06 00:08:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:12,271 INFO L225 Difference]: With dead ends: 2514 [2021-06-06 00:08:12,271 INFO L226 Difference]: Without dead ends: 2514 [2021-06-06 00:08:12,271 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 302.5ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:08:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-06 00:08:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-06 00:08:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-06 00:08:12,293 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-06 00:08:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:12,293 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-06 00:08:12,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:12,293 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-06 00:08:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:12,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:12,295 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:12,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-06 00:08:12,509 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash -148712735, now seen corresponding path program 19 times [2021-06-06 00:08:12,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:12,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077787902] [2021-06-06 00:08:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:12,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:12,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077787902] [2021-06-06 00:08:12,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077787902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:12,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477449283] [2021-06-06 00:08:12,560 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 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 [2021-06-06 00:08:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:12,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:12,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:12,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477449283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:12,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:12,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:12,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421023289] [2021-06-06 00:08:12,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:12,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:12,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:12,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:12,646 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:13,126 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-06 00:08:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:08:13,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 24 [2021-06-06 00:08:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:13,130 INFO L225 Difference]: With dead ends: 2332 [2021-06-06 00:08:13,131 INFO L226 Difference]: Without dead ends: 2328 [2021-06-06 00:08:13,131 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 279.6ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:08:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-06 00:08:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-06 00:08:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-06 00:08:13,151 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-06 00:08:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:13,151 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-06 00:08:13,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-06 00:08:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:13,152 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:13,152 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:13,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-06 00:08:13,368 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:13,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1060998287, now seen corresponding path program 3 times [2021-06-06 00:08:13,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:13,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912606890] [2021-06-06 00:08:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:13,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:13,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912606890] [2021-06-06 00:08:13,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912606890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:13,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769271360] [2021-06-06 00:08:13,388 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 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 [2021-06-06 00:08:13,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-06 00:08:13,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:13,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 00:08:13,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:13,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769271360] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:13,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:13,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 00:08:13,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525159022] [2021-06-06 00:08:13,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 00:08:13,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:13,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 00:08:13,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-06 00:08:13,446 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 00:08:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:13,507 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-06 00:08:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 00:08:13,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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 24 [2021-06-06 00:08:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:13,509 INFO L225 Difference]: With dead ends: 929 [2021-06-06 00:08:13,509 INFO L226 Difference]: Without dead ends: 929 [2021-06-06 00:08:13,509 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-06 00:08:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-06 00:08:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-06 00:08:13,529 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-06 00:08:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:13,529 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-06 00:08:13,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2021-06-06 00:08:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-06 00:08:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:13,531 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:13,531 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:13,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:13,741 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash -130798543, now seen corresponding path program 20 times [2021-06-06 00:08:13,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:13,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768948739] [2021-06-06 00:08:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:13,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:13,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768948739] [2021-06-06 00:08:13,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768948739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:13,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790330917] [2021-06-06 00:08:13,765 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:08:13,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:13,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:13,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:13,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790330917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:13,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:13,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:08:13,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219085297] [2021-06-06 00:08:13,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:08:13,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:13,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:08:13,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:08:13,838 INFO L87 Difference]: Start difference. First operand 780 states and 2573 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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) [2021-06-06 00:08:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:14,065 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-06 00:08:14,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:08:14,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 24 [2021-06-06 00:08:14,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:14,067 INFO L225 Difference]: With dead ends: 1555 [2021-06-06 00:08:14,067 INFO L226 Difference]: Without dead ends: 1555 [2021-06-06 00:08:14,068 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:08:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-06 00:08:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-06 00:08:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-06 00:08:14,081 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-06 00:08:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:14,081 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-06 00:08:14,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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) [2021-06-06 00:08:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-06 00:08:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:14,082 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:14,082 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:14,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:14,298 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1771880909, now seen corresponding path program 21 times [2021-06-06 00:08:14,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:14,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475954701] [2021-06-06 00:08:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:14,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:14,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475954701] [2021-06-06 00:08:14,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475954701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:14,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088775818] [2021-06-06 00:08:14,325 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 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 [2021-06-06 00:08:14,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:14,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:14,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:14,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:14,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088775818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:14,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:14,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-06 00:08:14,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173279448] [2021-06-06 00:08:14,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-06 00:08:14,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:14,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-06 00:08:14,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-06 00:08:14,391 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) [2021-06-06 00:08:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:14,579 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-06 00:08:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:08:14,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 24 [2021-06-06 00:08:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:14,582 INFO L225 Difference]: With dead ends: 1605 [2021-06-06 00:08:14,582 INFO L226 Difference]: Without dead ends: 1605 [2021-06-06 00:08:14,582 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:08:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-06 00:08:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-06 00:08:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-06 00:08:14,597 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-06 00:08:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:14,597 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-06 00:08:14,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) [2021-06-06 00:08:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-06 00:08:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:14,598 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:14,598 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:14,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:14,813 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:14,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1727059767, now seen corresponding path program 22 times [2021-06-06 00:08:14,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:14,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015465882] [2021-06-06 00:08:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:14,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:14,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015465882] [2021-06-06 00:08:14,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015465882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:14,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143547775] [2021-06-06 00:08:14,835 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 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 [2021-06-06 00:08:14,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:14,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:14,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:08:14,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143547775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:14,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:14,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-06 00:08:14,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375221334] [2021-06-06 00:08:14,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-06 00:08:14,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:14,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-06 00:08:14,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-06 00:08:14,892 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) [2021-06-06 00:08:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:15,045 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-06 00:08:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:08:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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 24 [2021-06-06 00:08:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:15,048 INFO L225 Difference]: With dead ends: 1524 [2021-06-06 00:08:15,048 INFO L226 Difference]: Without dead ends: 1520 [2021-06-06 00:08:15,048 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:08:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-06 00:08:15,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-06 00:08:15,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-06 00:08:15,061 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-06 00:08:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:15,061 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-06 00:08:15,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) [2021-06-06 00:08:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-06 00:08:15,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:15,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:15,062 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:15,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-06 00:08:15,278 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1970570871, now seen corresponding path program 23 times [2021-06-06 00:08:15,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:15,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51898783] [2021-06-06 00:08:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:15,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:15,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51898783] [2021-06-06 00:08:15,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51898783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:15,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440837821] [2021-06-06 00:08:15,307 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 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 [2021-06-06 00:08:15,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:15,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:15,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:15,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:15,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440837821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:15,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:15,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:08:15,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366961863] [2021-06-06 00:08:15,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:08:15,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:08:15,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:08:15,368 INFO L87 Difference]: Start difference. First operand 896 states and 2943 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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) [2021-06-06 00:08:15,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:15,560 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-06 00:08:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:08:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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 24 [2021-06-06 00:08:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:15,566 INFO L225 Difference]: With dead ends: 1508 [2021-06-06 00:08:15,567 INFO L226 Difference]: Without dead ends: 1496 [2021-06-06 00:08:15,567 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:08:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-06 00:08:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-06 00:08:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-06 00:08:15,590 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-06 00:08:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:15,590 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-06 00:08:15,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 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) [2021-06-06 00:08:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-06 00:08:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:15,591 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:15,591 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:15,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:15,805 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:15,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:15,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1797976141, now seen corresponding path program 24 times [2021-06-06 00:08:15,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:15,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133005632] [2021-06-06 00:08:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:15,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:15,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133005632] [2021-06-06 00:08:15,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133005632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:15,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463459561] [2021-06-06 00:08:15,833 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 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 [2021-06-06 00:08:15,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:15,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:15,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:15,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:15,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463459561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:15,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:15,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:15,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910260282] [2021-06-06 00:08:15,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:15,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:15,922 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:16,314 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-06 00:08:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:08:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:16,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:16,318 INFO L225 Difference]: With dead ends: 2412 [2021-06-06 00:08:16,318 INFO L226 Difference]: Without dead ends: 2412 [2021-06-06 00:08:16,319 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 246.7ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:08:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-06 00:08:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-06 00:08:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-06 00:08:16,337 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-06 00:08:16,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:16,337 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-06 00:08:16,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-06 00:08:16,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:16,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:16,339 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:16,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-06 00:08:16,545 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1930039075, now seen corresponding path program 25 times [2021-06-06 00:08:16,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:16,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873055798] [2021-06-06 00:08:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:16,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:16,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873055798] [2021-06-06 00:08:16,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873055798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:16,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806570189] [2021-06-06 00:08:16,569 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 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 [2021-06-06 00:08:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:16,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:16,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:16,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806570189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:16,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:16,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:16,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947484529] [2021-06-06 00:08:16,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:16,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:16,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:16,666 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:17,056 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-06 00:08:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:08:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:17,059 INFO L225 Difference]: With dead ends: 2335 [2021-06-06 00:08:17,059 INFO L226 Difference]: Without dead ends: 2335 [2021-06-06 00:08:17,060 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 264.9ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:08:17,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-06 00:08:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-06 00:08:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-06 00:08:17,076 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-06 00:08:17,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:17,076 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-06 00:08:17,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-06 00:08:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:17,078 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:17,078 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:17,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:17,293 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:17,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:17,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1192582363, now seen corresponding path program 26 times [2021-06-06 00:08:17,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:17,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80122181] [2021-06-06 00:08:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:17,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:17,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80122181] [2021-06-06 00:08:17,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80122181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:17,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163361807] [2021-06-06 00:08:17,324 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 [2021-06-06 00:08:17,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:17,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:17,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:17,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:17,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163361807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:17,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:17,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:17,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96789142] [2021-06-06 00:08:17,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:17,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:17,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:17,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:17,400 INFO L87 Difference]: Start difference. First operand 957 states and 3215 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) [2021-06-06 00:08:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:17,715 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-06 00:08:17,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:08:17,716 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 24 [2021-06-06 00:08:17,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:17,719 INFO L225 Difference]: With dead ends: 2285 [2021-06-06 00:08:17,719 INFO L226 Difference]: Without dead ends: 2285 [2021-06-06 00:08:17,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 204.5ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:08:17,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-06 00:08:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-06 00:08:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-06 00:08:17,736 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-06 00:08:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:17,736 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-06 00:08:17,736 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) [2021-06-06 00:08:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-06 00:08:17,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:17,738 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:17,738 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:17,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-06 00:08:17,945 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:17,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:17,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1273958451, now seen corresponding path program 27 times [2021-06-06 00:08:17,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:17,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765836786] [2021-06-06 00:08:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:17,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:17,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765836786] [2021-06-06 00:08:17,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765836786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:17,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699712734] [2021-06-06 00:08:17,980 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 [2021-06-06 00:08:18,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:18,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:18,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:18,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:18,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699712734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:18,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:18,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:18,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836846557] [2021-06-06 00:08:18,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:18,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:18,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:18,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:18,056 INFO L87 Difference]: Start difference. First operand 963 states and 3240 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) [2021-06-06 00:08:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:18,340 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-06 00:08:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:08:18,340 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 24 [2021-06-06 00:08:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:18,343 INFO L225 Difference]: With dead ends: 2176 [2021-06-06 00:08:18,343 INFO L226 Difference]: Without dead ends: 2172 [2021-06-06 00:08:18,344 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:08:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-06 00:08:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-06 00:08:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:18,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-06 00:08:18,360 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-06 00:08:18,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:18,361 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-06 00:08:18,361 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) [2021-06-06 00:08:18,361 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-06 00:08:18,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:18,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:18,362 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:18,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:18,565 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:18,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:18,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2090351629, now seen corresponding path program 28 times [2021-06-06 00:08:18,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:18,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318380103] [2021-06-06 00:08:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:18,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:18,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318380103] [2021-06-06 00:08:18,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318380103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:18,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736474779] [2021-06-06 00:08:18,598 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 [2021-06-06 00:08:18,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:18,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:18,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:18,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:18,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736474779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:18,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:18,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:18,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033206099] [2021-06-06 00:08:18,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:18,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:18,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:18,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:18,679 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:18,991 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-06 00:08:18,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:08:18,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 24 [2021-06-06 00:08:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:18,994 INFO L225 Difference]: With dead ends: 2199 [2021-06-06 00:08:18,994 INFO L226 Difference]: Without dead ends: 2199 [2021-06-06 00:08:18,994 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:08:18,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-06 00:08:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-06 00:08:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-06 00:08:19,011 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-06 00:08:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:19,011 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-06 00:08:19,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-06 00:08:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:19,012 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:19,012 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:19,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-06 00:08:19,217 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:19,217 INFO L82 PathProgramCache]: Analyzing trace with hash -447312475, now seen corresponding path program 29 times [2021-06-06 00:08:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:19,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885922502] [2021-06-06 00:08:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:19,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:19,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885922502] [2021-06-06 00:08:19,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885922502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:19,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043474904] [2021-06-06 00:08:19,242 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 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 [2021-06-06 00:08:19,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:19,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:19,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:19,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:19,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043474904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:19,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:19,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:19,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150871967] [2021-06-06 00:08:19,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:19,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:19,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:19,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:19,335 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:19,612 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-06 00:08:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:08:19,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 24 [2021-06-06 00:08:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:19,615 INFO L225 Difference]: With dead ends: 2156 [2021-06-06 00:08:19,615 INFO L226 Difference]: Without dead ends: 2152 [2021-06-06 00:08:19,615 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:08:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-06 00:08:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-06 00:08:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-06 00:08:19,632 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-06 00:08:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:19,632 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-06 00:08:19,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-06 00:08:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:19,633 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:19,633 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:19,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-06 00:08:19,848 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:19,849 INFO L82 PathProgramCache]: Analyzing trace with hash 556115509, now seen corresponding path program 30 times [2021-06-06 00:08:19,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:19,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925547368] [2021-06-06 00:08:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:19,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:19,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925547368] [2021-06-06 00:08:19,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925547368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:19,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389050619] [2021-06-06 00:08:19,873 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 [2021-06-06 00:08:19,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:19,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:19,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:19,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:19,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389050619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:19,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:19,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:08:19,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498008419] [2021-06-06 00:08:19,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:19,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:19,942 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:20,225 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-06 00:08:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:08:20,225 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:20,227 INFO L225 Difference]: With dead ends: 2097 [2021-06-06 00:08:20,227 INFO L226 Difference]: Without dead ends: 2097 [2021-06-06 00:08:20,228 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:08:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-06 00:08:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-06 00:08:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:20,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-06 00:08:20,245 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-06 00:08:20,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:20,245 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-06 00:08:20,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-06 00:08:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:20,247 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:20,247 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:20,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:20,447 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash 637491597, now seen corresponding path program 31 times [2021-06-06 00:08:20,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:20,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277209877] [2021-06-06 00:08:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:20,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:20,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277209877] [2021-06-06 00:08:20,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277209877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:20,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35091072] [2021-06-06 00:08:20,476 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 [2021-06-06 00:08:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:20,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:20,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:20,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35091072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:20,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:20,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:08:20,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586132488] [2021-06-06 00:08:20,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:20,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:20,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:20,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:20,537 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:20,754 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-06 00:08:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:08:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:20,757 INFO L225 Difference]: With dead ends: 1963 [2021-06-06 00:08:20,757 INFO L226 Difference]: Without dead ends: 1959 [2021-06-06 00:08:20,757 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:08:20,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-06 00:08:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-06 00:08:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-06 00:08:20,773 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-06 00:08:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:20,773 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-06 00:08:20,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:20,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-06 00:08:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:20,774 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:20,774 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:20,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:20,989 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:20,989 INFO L82 PathProgramCache]: Analyzing trace with hash -877600375, now seen corresponding path program 32 times [2021-06-06 00:08:20,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:20,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110160484] [2021-06-06 00:08:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:21,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:21,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110160484] [2021-06-06 00:08:21,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110160484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:21,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502044263] [2021-06-06 00:08:21,014 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) [2021-06-06 00:08:21,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:21,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:21,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:21,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:21,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502044263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:21,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:21,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:08:21,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359701205] [2021-06-06 00:08:21,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:08:21,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:21,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:08:21,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:08:21,082 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:21,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:21,256 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-06 00:08:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:08:21,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 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 24 [2021-06-06 00:08:21,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:21,258 INFO L225 Difference]: With dead ends: 1728 [2021-06-06 00:08:21,258 INFO L226 Difference]: Without dead ends: 1716 [2021-06-06 00:08:21,258 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:08:21,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-06 00:08:21,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-06 00:08:21,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-06 00:08:21,272 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-06 00:08:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:21,272 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-06 00:08:21,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-06 00:08:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:21,273 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:21,273 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:21,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:21,485 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:21,485 INFO L82 PathProgramCache]: Analyzing trace with hash 719526341, now seen corresponding path program 33 times [2021-06-06 00:08:21,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:21,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350777988] [2021-06-06 00:08:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:21,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:21,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350777988] [2021-06-06 00:08:21,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350777988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:21,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685587240] [2021-06-06 00:08:21,518 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 [2021-06-06 00:08:21,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:21,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:21,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:21,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:21,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685587240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:21,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:21,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:21,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388655093] [2021-06-06 00:08:21,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:21,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:21,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:21,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:21,602 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:21,852 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-06 00:08:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:08:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 24 [2021-06-06 00:08:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:21,855 INFO L225 Difference]: With dead ends: 1821 [2021-06-06 00:08:21,855 INFO L226 Difference]: Without dead ends: 1821 [2021-06-06 00:08:21,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:08:21,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-06 00:08:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-06 00:08:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-06 00:08:21,872 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-06 00:08:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:21,872 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-06 00:08:21,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-06 00:08:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:21,873 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:21,874 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:22,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:22,085 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1932401801, now seen corresponding path program 34 times [2021-06-06 00:08:22,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:22,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875501187] [2021-06-06 00:08:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:22,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:22,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875501187] [2021-06-06 00:08:22,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875501187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:22,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729300429] [2021-06-06 00:08:22,111 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 [2021-06-06 00:08:22,131 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:22,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:22,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:22,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:22,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729300429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:22,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:22,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:08:22,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563244450] [2021-06-06 00:08:22,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:08:22,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:22,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:08:22,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:08:22,189 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:22,408 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-06 00:08:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:08:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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 24 [2021-06-06 00:08:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:22,410 INFO L225 Difference]: With dead ends: 1790 [2021-06-06 00:08:22,410 INFO L226 Difference]: Without dead ends: 1786 [2021-06-06 00:08:22,411 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-06 00:08:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-06 00:08:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-06 00:08:22,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-06 00:08:22,426 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-06 00:08:22,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:22,426 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-06 00:08:22,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 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) [2021-06-06 00:08:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-06 00:08:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:08:22,428 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:22,428 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:22,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-06-06 00:08:22,644 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:22,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:22,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1095108317, now seen corresponding path program 35 times [2021-06-06 00:08:22,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:22,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188138831] [2021-06-06 00:08:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:22,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:22,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188138831] [2021-06-06 00:08:22,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188138831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:22,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097068585] [2021-06-06 00:08:22,673 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 [2021-06-06 00:08:22,706 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:22,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:22,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:08:22,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:22,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097068585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:22,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:22,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:08:22,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989905506] [2021-06-06 00:08:22,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:08:22,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:22,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:08:22,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:08:22,753 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 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) [2021-06-06 00:08:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:22,922 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-06 00:08:22,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:08:22,922 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 24 [2021-06-06 00:08:22,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:22,924 INFO L225 Difference]: With dead ends: 1649 [2021-06-06 00:08:22,924 INFO L226 Difference]: Without dead ends: 1637 [2021-06-06 00:08:22,924 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:08:22,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-06 00:08:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-06 00:08:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-06 00:08:22,938 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-06 00:08:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:22,938 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-06 00:08:22,938 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) [2021-06-06 00:08:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-06 00:08:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:22,940 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:22,940 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:23,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:23,140 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:23,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1918687339, now seen corresponding path program 4 times [2021-06-06 00:08:23,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:23,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523297331] [2021-06-06 00:08:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:23,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:23,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523297331] [2021-06-06 00:08:23,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523297331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:23,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994958837] [2021-06-06 00:08:23,478 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 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 [2021-06-06 00:08:23,499 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:23,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:23,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:08:23,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:23,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:23,902 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:23,908 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:23,913 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:23,919 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:23,925 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:23,932 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:23,937 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:08:23,956 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:23,962 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:23,966 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:23,972 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:23,978 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:23,983 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:23,989 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:23,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:23,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:23,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:23,992 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:24,009 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:08:24,010 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:08:24,010 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:08:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:24,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994958837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:24,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:24,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:08:24,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554847795] [2021-06-06 00:08:24,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:08:24,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:24,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:08:24,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:08:24,033 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:24,638 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-06 00:08:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:08:24,638 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:24,640 INFO L225 Difference]: With dead ends: 1517 [2021-06-06 00:08:24,640 INFO L226 Difference]: Without dead ends: 1502 [2021-06-06 00:08:24,641 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 818.6ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:08:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-06 00:08:24,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-06 00:08:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-06 00:08:24,654 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-06 00:08:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:24,655 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-06 00:08:24,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-06 00:08:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:24,656 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:24,656 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:24,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-06-06 00:08:24,857 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:24,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:24,857 INFO L82 PathProgramCache]: Analyzing trace with hash -109710677, now seen corresponding path program 5 times [2021-06-06 00:08:24,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:24,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636155432] [2021-06-06 00:08:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:25,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:25,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636155432] [2021-06-06 00:08:25,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636155432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:25,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868060663] [2021-06-06 00:08:25,187 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 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 [2021-06-06 00:08:25,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:25,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:25,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:08:25,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:25,636 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_3], 2=[A, v_prenex_5]} [2021-06-06 00:08:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:25,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:25,641 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:25,721 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-06 00:08:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:25,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:25,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:08:25,725 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:25,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:25,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:25,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:08:25,778 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:25,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:25,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:25,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:25,782 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:25,821 INFO L628 ElimStorePlain]: treesize reduction 15, result has 76.9 percent of original size [2021-06-06 00:08:25,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:08:25,823 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:25 [2021-06-06 00:08:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:25,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868060663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:25,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:25,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:08:25,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265398377] [2021-06-06 00:08:25,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:08:25,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:25,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:08:25,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:08:25,877 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:27,121 INFO L93 Difference]: Finished difference Result 1616 states and 5213 transitions. [2021-06-06 00:08:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:08:27,121 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:27,123 INFO L225 Difference]: With dead ends: 1616 [2021-06-06 00:08:27,123 INFO L226 Difference]: Without dead ends: 1571 [2021-06-06 00:08:27,124 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1429.2ms TimeCoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:08:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-06-06 00:08:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1171. [2021-06-06 00:08:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 3.347008547008547) internal successors, (3916), 1170 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 3916 transitions. [2021-06-06 00:08:27,138 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 3916 transitions. Word has length 26 [2021-06-06 00:08:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:27,138 INFO L482 AbstractCegarLoop]: Abstraction has 1171 states and 3916 transitions. [2021-06-06 00:08:27,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 3916 transitions. [2021-06-06 00:08:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:27,140 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:27,140 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:27,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:27,340 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:27,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1481718631, now seen corresponding path program 36 times [2021-06-06 00:08:27,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:27,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586645323] [2021-06-06 00:08:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:27,683 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-06 00:08:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:27,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:27,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586645323] [2021-06-06 00:08:27,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586645323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:27,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489688818] [2021-06-06 00:08:27,845 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 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 [2021-06-06 00:08:27,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:27,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:27,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:08:27,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:28,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:28,396 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:08:28,404 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:08:28,411 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:08:28,420 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:08:28,428 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:08:28,435 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:08:28,442 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:08:28,450 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:08:28,457 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:08:28,465 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:08:28,473 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:08:28,481 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:28,487 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:08:28,494 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:28,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:28,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:08:28,498 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:28,513 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:08:28,514 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:08:28,514 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:08:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:28,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489688818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:28,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:28,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:08:28,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915008379] [2021-06-06 00:08:28,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:08:28,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:28,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:08:28,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:08:28,536 INFO L87 Difference]: Start difference. First operand 1171 states and 3916 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:30,362 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-06 00:08:30,868 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-06 00:08:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:30,925 INFO L93 Difference]: Finished difference Result 1671 states and 5380 transitions. [2021-06-06 00:08:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:08:30,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:30,927 INFO L225 Difference]: With dead ends: 1671 [2021-06-06 00:08:30,928 INFO L226 Difference]: Without dead ends: 1656 [2021-06-06 00:08:30,928 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2519.6ms TimeCoverageRelationStatistics Valid=361, Invalid=1801, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:08:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-06-06 00:08:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1201. [2021-06-06 00:08:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 3.3316666666666666) internal successors, (3998), 1200 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 3998 transitions. [2021-06-06 00:08:30,942 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 3998 transitions. Word has length 26 [2021-06-06 00:08:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:30,942 INFO L482 AbstractCegarLoop]: Abstraction has 1201 states and 3998 transitions. [2021-06-06 00:08:30,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 3998 transitions. [2021-06-06 00:08:30,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:30,944 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:30,944 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:31,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:31,144 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:31,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2008201489, now seen corresponding path program 6 times [2021-06-06 00:08:31,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:31,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628301266] [2021-06-06 00:08:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:31,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:31,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628301266] [2021-06-06 00:08:31,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628301266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:31,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539345799] [2021-06-06 00:08:31,481 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 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 [2021-06-06 00:08:31,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:31,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:31,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:08:31,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:31,858 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_9], 2=[A, v_prenex_7]} [2021-06-06 00:08:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:31,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:31,862 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:31,965 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-06-06 00:08:31,966 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-06 00:08:31,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:31,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:31,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:08:31,970 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:31,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:31,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:31,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:31,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:08:31,995 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:32,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:32,014 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:08:32,014 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:15 [2021-06-06 00:08:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:32,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539345799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:32,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:32,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:08:32,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907759047] [2021-06-06 00:08:32,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:08:32,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:32,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:08:32,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:08:32,040 INFO L87 Difference]: Start difference. First operand 1201 states and 3998 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:33,064 INFO L93 Difference]: Finished difference Result 1703 states and 5445 transitions. [2021-06-06 00:08:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:08:33,065 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:33,067 INFO L225 Difference]: With dead ends: 1703 [2021-06-06 00:08:33,067 INFO L226 Difference]: Without dead ends: 1673 [2021-06-06 00:08:33,067 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1215.0ms TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:08:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2021-06-06 00:08:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1210. [2021-06-06 00:08:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.329197684036394) internal successors, (4025), 1209 states have internal predecessors, (4025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4025 transitions. [2021-06-06 00:08:33,082 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4025 transitions. Word has length 26 [2021-06-06 00:08:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:33,082 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4025 transitions. [2021-06-06 00:08:33,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4025 transitions. [2021-06-06 00:08:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:33,083 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:33,083 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:33,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2021-06-06 00:08:33,284 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:33,284 INFO L82 PathProgramCache]: Analyzing trace with hash -457819925, now seen corresponding path program 37 times [2021-06-06 00:08:33,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:33,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917828343] [2021-06-06 00:08:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:33,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:33,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917828343] [2021-06-06 00:08:33,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917828343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:33,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540441773] [2021-06-06 00:08:33,656 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 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 [2021-06-06 00:08:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:33,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:08:33,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:34,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:34,180 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:08:34,188 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:08:34,195 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:08:34,204 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:08:34,212 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:08:34,220 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:08:34,228 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:08:34,235 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:08:34,242 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:08:34,248 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:08:34,255 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:08:34,262 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:08:34,271 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:34,278 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:34,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:34,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:08:34,282 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:34,303 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:08:34,304 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:08:34,304 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:08:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:34,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540441773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:34,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:34,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:08:34,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500805699] [2021-06-06 00:08:34,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:08:34,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:34,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:08:34,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:08:34,326 INFO L87 Difference]: Start difference. First operand 1210 states and 4025 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:36,128 INFO L93 Difference]: Finished difference Result 1830 states and 5830 transitions. [2021-06-06 00:08:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:08:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:36,130 INFO L225 Difference]: With dead ends: 1830 [2021-06-06 00:08:36,130 INFO L226 Difference]: Without dead ends: 1815 [2021-06-06 00:08:36,131 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1720.4ms TimeCoverageRelationStatistics Valid=344, Invalid=1548, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:08:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2021-06-06 00:08:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1222. [2021-06-06 00:08:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.3374283374283373) internal successors, (4075), 1221 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4075 transitions. [2021-06-06 00:08:36,145 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4075 transitions. Word has length 26 [2021-06-06 00:08:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:36,146 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4075 transitions. [2021-06-06 00:08:36,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4075 transitions. [2021-06-06 00:08:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:36,147 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:36,147 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:36,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2021-06-06 00:08:36,348 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1434138769, now seen corresponding path program 38 times [2021-06-06 00:08:36,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:36,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570639296] [2021-06-06 00:08:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:36,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:36,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570639296] [2021-06-06 00:08:36,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570639296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:36,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585860109] [2021-06-06 00:08:36,769 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 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 [2021-06-06 00:08:36,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:36,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:36,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:08:36,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:37,360 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:08:37,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-06 00:08:37,367 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,400 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-06 00:08:37,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:08:37,402 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,431 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-06 00:08:37,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 30 [2021-06-06 00:08:37,433 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,467 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:08:37,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-06 00:08:37,478 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,514 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:08:37,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-06 00:08:37,524 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,540 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:08:37,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:08:37,541 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,574 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:08:37,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-06 00:08:37,580 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,620 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:08:37,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:08:37,628 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,669 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:08:37,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-06 00:08:37,676 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,710 INFO L354 Elim1Store]: treesize reduction 21, result has 48.8 percent of original size [2021-06-06 00:08:37,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 38 [2021-06-06 00:08:37,712 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,728 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:08:37,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:08:37,729 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,745 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:08:37,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:08:37,745 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,784 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:08:37,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:08:37,792 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,831 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:08:37,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 40 [2021-06-06 00:08:37,837 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,871 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:08:37,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 45 [2021-06-06 00:08:37,884 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:37,894 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:08:37,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:08:37,895 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:38,329 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-06-06 00:08:38,329 INFO L628 ElimStorePlain]: treesize reduction 219, result has 60.0 percent of original size [2021-06-06 00:08:38,343 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-06 00:08:38,344 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:385 [2021-06-06 00:08:38,544 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-06-06 00:08:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:38,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585860109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:38,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:38,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-06 00:08:38,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904575862] [2021-06-06 00:08:38,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:08:38,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:38,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:08:38,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:08:38,647 INFO L87 Difference]: Start difference. First operand 1222 states and 4075 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:40,196 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2021-06-06 00:08:40,551 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2021-06-06 00:08:40,883 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2021-06-06 00:08:41,193 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2021-06-06 00:08:41,442 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2021-06-06 00:08:41,843 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-06-06 00:08:42,037 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-06-06 00:08:42,186 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 41 [2021-06-06 00:08:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:42,649 INFO L93 Difference]: Finished difference Result 2502 states and 7680 transitions. [2021-06-06 00:08:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:08:42,649 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:42,652 INFO L225 Difference]: With dead ends: 2502 [2021-06-06 00:08:42,652 INFO L226 Difference]: Without dead ends: 2457 [2021-06-06 00:08:42,653 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 4114.1ms TimeCoverageRelationStatistics Valid=695, Invalid=3727, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:08:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-06-06 00:08:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1394. [2021-06-06 00:08:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.3058147882268485) internal successors, (4605), 1393 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:42,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 4605 transitions. [2021-06-06 00:08:42,671 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 4605 transitions. Word has length 26 [2021-06-06 00:08:42,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:42,672 INFO L482 AbstractCegarLoop]: Abstraction has 1394 states and 4605 transitions. [2021-06-06 00:08:42,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 4605 transitions. [2021-06-06 00:08:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:42,673 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:42,673 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:42,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable365 [2021-06-06 00:08:42,874 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:42,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:42,874 INFO L82 PathProgramCache]: Analyzing trace with hash 775761299, now seen corresponding path program 7 times [2021-06-06 00:08:42,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:42,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013102019] [2021-06-06 00:08:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:43,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:43,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013102019] [2021-06-06 00:08:43,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013102019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:43,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704968944] [2021-06-06 00:08:43,191 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 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 [2021-06-06 00:08:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:08:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:43,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:43,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:43,569 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:43,574 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:08:43,579 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:43,584 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:43,590 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:43,595 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:43,600 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:43,605 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:43,610 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:43,616 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:43,620 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:43,625 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:43,630 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:43,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:43,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:43,633 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:43,650 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:08:43,651 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:08:43,651 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:08:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:43,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704968944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:43,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:43,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:08:43,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995841093] [2021-06-06 00:08:43,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:08:43,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:43,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:08:43,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:08:43,672 INFO L87 Difference]: Start difference. First operand 1394 states and 4605 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:44,432 INFO L93 Difference]: Finished difference Result 1799 states and 5825 transitions. [2021-06-06 00:08:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:08:44,432 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:44,435 INFO L225 Difference]: With dead ends: 1799 [2021-06-06 00:08:44,435 INFO L226 Difference]: Without dead ends: 1784 [2021-06-06 00:08:44,435 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 975.5ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:08:44,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-06-06 00:08:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1405. [2021-06-06 00:08:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.3034188034188032) internal successors, (4638), 1404 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 4638 transitions. [2021-06-06 00:08:44,451 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 4638 transitions. Word has length 26 [2021-06-06 00:08:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:44,451 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 4638 transitions. [2021-06-06 00:08:44,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 4638 transitions. [2021-06-06 00:08:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:44,453 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:44,453 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:44,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable499 [2021-06-06 00:08:44,653 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:44,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1252636717, now seen corresponding path program 8 times [2021-06-06 00:08:44,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:44,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784787294] [2021-06-06 00:08:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:44,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:44,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784787294] [2021-06-06 00:08:44,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784787294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:44,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708320542] [2021-06-06 00:08:44,966 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:08:44,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:08:44,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:44,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:08:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:45,305 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-06 00:08:45,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:45,475 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:08:45,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 39 [2021-06-06 00:08:45,477 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:45,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:45,490 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:08:45,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:08:45,491 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:45,825 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2021-06-06 00:08:45,825 INFO L628 ElimStorePlain]: treesize reduction 100, result has 83.4 percent of original size [2021-06-06 00:08:45,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:45,846 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:45,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 36 [2021-06-06 00:08:45,858 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:45,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:45,871 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:08:45,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 1 [2021-06-06 00:08:45,872 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,016 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-06 00:08:46,017 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,040 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:08:46,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-06-06 00:08:46,044 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,189 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:08:46,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,207 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:08:46,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 30 [2021-06-06 00:08:46,209 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,337 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-06 00:08:46,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,354 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:08:46,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2021-06-06 00:08:46,357 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,492 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-06 00:08:46,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2021-06-06 00:08:46,514 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,636 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 00:08:46,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,656 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:08:46,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-06 00:08:46,660 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,772 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:08:46,773 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:46,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 36 [2021-06-06 00:08:46,795 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:46,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:46,807 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:08:46,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 18 [2021-06-06 00:08:46,808 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:47,000 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-06-06 00:08:47,000 INFO L628 ElimStorePlain]: treesize reduction 23, result has 92.5 percent of original size [2021-06-06 00:08:47,016 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:08:47,016 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:679, output treesize:449 [2021-06-06 00:08:47,215 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-06-06 00:08:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:47,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708320542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:47,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:47,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:08:47,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106015620] [2021-06-06 00:08:47,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:08:47,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:47,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:08:47,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:08:47,317 INFO L87 Difference]: Start difference. First operand 1405 states and 4638 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:48,264 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2021-06-06 00:08:48,408 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 33 [2021-06-06 00:08:48,623 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-06-06 00:08:48,967 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:08:49,148 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-06 00:08:49,369 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-06-06 00:08:49,716 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-06 00:08:50,253 WARN L205 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2021-06-06 00:08:50,545 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2021-06-06 00:08:50,724 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-06-06 00:08:51,270 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2021-06-06 00:08:51,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:51,714 INFO L93 Difference]: Finished difference Result 2194 states and 6873 transitions. [2021-06-06 00:08:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:08:51,714 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:51,716 INFO L225 Difference]: With dead ends: 2194 [2021-06-06 00:08:51,716 INFO L226 Difference]: Without dead ends: 2149 [2021-06-06 00:08:51,717 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 4494.1ms TimeCoverageRelationStatistics Valid=352, Invalid=2000, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:08:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-06-06 00:08:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1416. [2021-06-06 00:08:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.311660777385159) internal successors, (4686), 1415 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4686 transitions. [2021-06-06 00:08:51,735 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4686 transitions. Word has length 26 [2021-06-06 00:08:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:51,735 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 4686 transitions. [2021-06-06 00:08:51,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4686 transitions. [2021-06-06 00:08:51,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:51,737 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:51,737 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:51,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable543 [2021-06-06 00:08:51,937 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1104920871, now seen corresponding path program 9 times [2021-06-06 00:08:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:51,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611407076] [2021-06-06 00:08:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:52,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:52,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611407076] [2021-06-06 00:08:52,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611407076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:52,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377547595] [2021-06-06 00:08:52,119 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 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 [2021-06-06 00:08:52,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:08:52,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:52,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:08:52,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:52,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:52,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:52,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:52,682 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:52,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:52,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:52,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:52,687 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:52,758 INFO L628 ElimStorePlain]: treesize reduction 117, result has 42.4 percent of original size [2021-06-06 00:08:52,758 INFO L518 ElimStorePlain]: Eliminatee v_prenex_32 vanished before elimination [2021-06-06 00:08:52,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:52,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:52,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:52,763 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:52,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:52,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:52,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:52,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:08:52,790 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:52,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:52,812 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:08:52,812 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:265, output treesize:24 [2021-06-06 00:08:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:52,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377547595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:52,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:52,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:08:52,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604798399] [2021-06-06 00:08:52,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:08:52,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:52,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:08:52,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:08:52,840 INFO L87 Difference]: Start difference. First operand 1416 states and 4686 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:53,602 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-06-06 00:08:53,754 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2021-06-06 00:08:54,050 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2021-06-06 00:08:54,202 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-06-06 00:08:54,438 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-06-06 00:08:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:54,544 INFO L93 Difference]: Finished difference Result 2242 states and 7148 transitions. [2021-06-06 00:08:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:08:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:54,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:54,547 INFO L225 Difference]: With dead ends: 2242 [2021-06-06 00:08:54,547 INFO L226 Difference]: Without dead ends: 2212 [2021-06-06 00:08:54,547 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1767.7ms TimeCoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:08:54,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-06-06 00:08:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1446. [2021-06-06 00:08:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 3.3217993079584773) internal successors, (4800), 1445 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4800 transitions. [2021-06-06 00:08:54,565 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4800 transitions. Word has length 26 [2021-06-06 00:08:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:54,565 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4800 transitions. [2021-06-06 00:08:54,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4800 transitions. [2021-06-06 00:08:54,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:54,567 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:54,567 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:54,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:54,767 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:54,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:54,768 INFO L82 PathProgramCache]: Analyzing trace with hash 937111779, now seen corresponding path program 10 times [2021-06-06 00:08:54,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:54,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741337326] [2021-06-06 00:08:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:55,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:55,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741337326] [2021-06-06 00:08:55,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741337326] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:55,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326694486] [2021-06-06 00:08:55,039 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 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 [2021-06-06 00:08:55,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:08:55,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:55,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:08:55,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:55,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:55,400 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:08:55,406 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:55,412 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:55,419 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:55,424 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:55,429 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:08:55,434 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:55,439 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:55,444 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:55,450 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:55,454 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:55,459 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:08:55,463 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:55,468 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:55,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:55,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:55,471 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:55,488 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:08:55,489 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:08:55,489 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:08:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:55,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326694486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:55,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:55,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:08:55,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729870537] [2021-06-06 00:08:55,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:08:55,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:55,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:08:55,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:08:55,515 INFO L87 Difference]: Start difference. First operand 1446 states and 4800 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:55,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:55,943 INFO L93 Difference]: Finished difference Result 1751 states and 5745 transitions. [2021-06-06 00:08:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:08:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:55,946 INFO L225 Difference]: With dead ends: 1751 [2021-06-06 00:08:55,946 INFO L226 Difference]: Without dead ends: 1736 [2021-06-06 00:08:55,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 632.8ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:08:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2021-06-06 00:08:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1455. [2021-06-06 00:08:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.3259972489683634) internal successors, (4836), 1454 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:55,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4836 transitions. [2021-06-06 00:08:55,970 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4836 transitions. Word has length 26 [2021-06-06 00:08:55,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:55,971 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4836 transitions. [2021-06-06 00:08:55,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4836 transitions. [2021-06-06 00:08:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:55,973 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:55,973 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:56,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:08:56,173 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:56,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1130404249, now seen corresponding path program 11 times [2021-06-06 00:08:56,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:56,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227821424] [2021-06-06 00:08:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:56,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:56,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227821424] [2021-06-06 00:08:56,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227821424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:56,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718771193] [2021-06-06 00:08:56,444 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 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 [2021-06-06 00:08:56,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:08:56,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:56,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:08:56,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:56,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,657 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:56,661 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,667 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:56,668 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:56,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:08:56,679 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:56,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:08:56,689 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,697 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:56,697 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,707 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:56,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:08:56,708 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,717 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:56,718 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,729 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:56,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:08:56,730 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,739 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:56,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:08:56,740 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,748 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:08:56,749 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,755 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:56,756 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,764 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:56,764 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,772 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:08:56,772 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,779 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:08:56,780 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,787 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:56,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:56,787 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:56,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:56,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:08:56,796 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:56,850 INFO L628 ElimStorePlain]: treesize reduction 55, result has 55.6 percent of original size [2021-06-06 00:08:56,851 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:08:56,851 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:569, output treesize:69 [2021-06-06 00:08:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:56,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718771193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:56,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:56,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:08:56,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049168996] [2021-06-06 00:08:56,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:08:56,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:56,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:08:56,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:08:56,940 INFO L87 Difference]: Start difference. First operand 1455 states and 4836 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:58,152 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-06 00:08:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:08:58,761 INFO L93 Difference]: Finished difference Result 2518 states and 8034 transitions. [2021-06-06 00:08:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:08:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:08:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:08:58,764 INFO L225 Difference]: With dead ends: 2518 [2021-06-06 00:08:58,764 INFO L226 Difference]: Without dead ends: 2488 [2021-06-06 00:08:58,765 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 1769.7ms TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:08:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2021-06-06 00:08:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 1471. [2021-06-06 00:08:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 3.336734693877551) internal successors, (4905), 1470 states have internal predecessors, (4905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 4905 transitions. [2021-06-06 00:08:58,785 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 4905 transitions. Word has length 26 [2021-06-06 00:08:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:08:58,785 INFO L482 AbstractCegarLoop]: Abstraction has 1471 states and 4905 transitions. [2021-06-06 00:08:58,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:08:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 4905 transitions. [2021-06-06 00:08:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:08:58,787 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:08:58,787 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:08:58,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable653 [2021-06-06 00:08:58,987 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:08:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:08:58,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1060173529, now seen corresponding path program 12 times [2021-06-06 00:08:58,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:08:58,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585768127] [2021-06-06 00:08:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:08:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:08:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:59,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:08:59,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585768127] [2021-06-06 00:08:59,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585768127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:59,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427582843] [2021-06-06 00:08:59,255 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 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 [2021-06-06 00:08:59,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:08:59,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:08:59,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:08:59,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:08:59,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,500 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:59,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 27 [2021-06-06 00:08:59,501 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,513 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:59,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-06 00:08:59,515 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:59,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:08:59,529 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,540 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:59,541 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,552 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:08:59,552 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,566 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:08:59,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:08:59,567 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,580 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:08:59,580 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,592 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:08:59,593 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,607 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:08:59,607 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,618 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:59,619 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,631 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:08:59,631 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,641 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:08:59,642 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,653 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:08:59,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-06-06 00:08:59,656 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,665 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:08:59,666 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,674 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:08:59,676 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:08:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:08:59,681 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:08:59,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:08:59,682 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:08:59,744 INFO L628 ElimStorePlain]: treesize reduction 46, result has 65.7 percent of original size [2021-06-06 00:08:59,745 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:08:59,745 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:689, output treesize:88 [2021-06-06 00:08:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:08:59,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427582843] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:08:59,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:08:59,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:08:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311054969] [2021-06-06 00:08:59,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:08:59,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:08:59,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:08:59,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:08:59,817 INFO L87 Difference]: Start difference. First operand 1471 states and 4905 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:01,745 INFO L93 Difference]: Finished difference Result 2131 states and 6893 transitions. [2021-06-06 00:09:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:09:01,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:01,748 INFO L225 Difference]: With dead ends: 2131 [2021-06-06 00:09:01,748 INFO L226 Difference]: Without dead ends: 2101 [2021-06-06 00:09:01,748 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 1878.9ms TimeCoverageRelationStatistics Valid=323, Invalid=1483, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:09:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-06-06 00:09:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1480. [2021-06-06 00:09:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.342799188640974) internal successors, (4944), 1479 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 4944 transitions. [2021-06-06 00:09:01,767 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 4944 transitions. Word has length 26 [2021-06-06 00:09:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:01,767 INFO L482 AbstractCegarLoop]: Abstraction has 1480 states and 4944 transitions. [2021-06-06 00:09:01,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 4944 transitions. [2021-06-06 00:09:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:01,769 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:01,769 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:01,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable667 [2021-06-06 00:09:01,969 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:01,970 INFO L82 PathProgramCache]: Analyzing trace with hash -165503173, now seen corresponding path program 13 times [2021-06-06 00:09:01,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:01,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077133223] [2021-06-06 00:09:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:02,245 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-06 00:09:02,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:02,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:02,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077133223] [2021-06-06 00:09:02,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077133223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:02,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938657899] [2021-06-06 00:09:02,385 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 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 [2021-06-06 00:09:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:02,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:09:02,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:02,718 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_36], 2=[A, v_prenex_34]} [2021-06-06 00:09:02,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:02,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:09:02,723 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:02,813 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-06 00:09:02,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:02,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:02,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:02,817 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:02,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:02,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:02,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:02,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:02,840 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:02,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:02,857 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:02,857 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:15 [2021-06-06 00:09:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:02,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938657899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:02,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:02,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:09:02,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448196854] [2021-06-06 00:09:02,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:02,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:02,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:02,888 INFO L87 Difference]: Start difference. First operand 1480 states and 4944 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:04,099 INFO L93 Difference]: Finished difference Result 2125 states and 6803 transitions. [2021-06-06 00:09:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:09:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:04,102 INFO L225 Difference]: With dead ends: 2125 [2021-06-06 00:09:04,102 INFO L226 Difference]: Without dead ends: 2110 [2021-06-06 00:09:04,102 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1377.4ms TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:09:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2021-06-06 00:09:04,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1482. [2021-06-06 00:09:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.3430114787305873) internal successors, (4951), 1481 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 4951 transitions. [2021-06-06 00:09:04,127 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 4951 transitions. Word has length 26 [2021-06-06 00:09:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:04,127 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 4951 transitions. [2021-06-06 00:09:04,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 4951 transitions. [2021-06-06 00:09:04,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:04,129 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:04,130 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:04,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable688 [2021-06-06 00:09:04,330 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash -158392533, now seen corresponding path program 39 times [2021-06-06 00:09:04,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:04,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417822088] [2021-06-06 00:09:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:04,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:04,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417822088] [2021-06-06 00:09:04,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417822088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:04,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493405648] [2021-06-06 00:09:04,556 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 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 [2021-06-06 00:09:04,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:04,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:04,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:09:04,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:05,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:09:05,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:05,069 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:05,075 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:09:05,082 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:05,089 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:05,099 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:09:05,108 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:09:05,116 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:09:05,123 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:09:05,131 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:09:05,140 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:09:05,147 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:09:05,155 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:09:05,163 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:05,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:05,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:09:05,167 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:05,186 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:09:05,188 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:05,188 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:09:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:05,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493405648] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:05,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:05,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:09:05,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559209915] [2021-06-06 00:09:05,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:09:05,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:05,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:09:05,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:05,219 INFO L87 Difference]: Start difference. First operand 1482 states and 4951 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:05,848 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2021-06-06 00:09:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:07,988 INFO L93 Difference]: Finished difference Result 3327 states and 10302 transitions. [2021-06-06 00:09:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:09:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:07,992 INFO L225 Difference]: With dead ends: 3327 [2021-06-06 00:09:07,992 INFO L226 Difference]: Without dead ends: 3282 [2021-06-06 00:09:07,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 2435.3ms TimeCoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:09:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2021-06-06 00:09:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 1496. [2021-06-06 00:09:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3545150501672243) internal successors, (5015), 1495 states have internal predecessors, (5015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5015 transitions. [2021-06-06 00:09:08,016 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5015 transitions. Word has length 26 [2021-06-06 00:09:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:08,016 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5015 transitions. [2021-06-06 00:09:08,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5015 transitions. [2021-06-06 00:09:08,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:08,018 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:08,018 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:08,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable699 [2021-06-06 00:09:08,218 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:08,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1424367203, now seen corresponding path program 14 times [2021-06-06 00:09:08,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:08,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937453095] [2021-06-06 00:09:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:08,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:08,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937453095] [2021-06-06 00:09:08,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937453095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:08,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146769670] [2021-06-06 00:09:08,544 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 [2021-06-06 00:09:08,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:08,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:08,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:09:08,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:09,282 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:09,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:09,284 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:09,576 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 149 [2021-06-06 00:09:09,576 INFO L628 ElimStorePlain]: treesize reduction 201, result has 67.0 percent of original size [2021-06-06 00:09:09,596 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:09,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:09:09,601 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:09,731 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-06 00:09:09,732 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:09,732 INFO L518 ElimStorePlain]: Eliminatee v_prenex_82 vanished before elimination [2021-06-06 00:09:09,754 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:09,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:09:09,755 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:09,884 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-06 00:09:09,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:09,902 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:09,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:09:09,904 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,032 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2021-06-06 00:09:10,032 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,051 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:10,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:10,052 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,181 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-06 00:09:10,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,201 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:10,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:09:10,205 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,324 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:09:10,324 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,340 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:09:10,342 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,463 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-06 00:09:10,463 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,478 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:09:10,480 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,605 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:09:10,605 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,624 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:10,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:09:10,639 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,760 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:09:10,760 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,773 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:09:10,778 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:10,895 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:09:10,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:10,911 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:10,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:09:10,915 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:11,027 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:09:11,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:11,027 INFO L518 ElimStorePlain]: Eliminatee v_prenex_88 vanished before elimination [2021-06-06 00:09:11,027 INFO L518 ElimStorePlain]: Eliminatee v_prenex_66 vanished before elimination [2021-06-06 00:09:11,041 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 14 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:09:11,041 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 28 variables, input treesize:631, output treesize:455 [2021-06-06 00:09:11,236 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2021-06-06 00:09:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:11,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146769670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:11,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:11,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:09:11,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458597968] [2021-06-06 00:09:11,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:09:11,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:11,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:09:11,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:11,370 INFO L87 Difference]: Start difference. First operand 1496 states and 5015 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:11,747 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2021-06-06 00:09:12,152 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 38 [2021-06-06 00:09:12,934 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-06 00:09:13,333 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-06 00:09:13,810 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-06-06 00:09:14,203 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-06 00:09:14,707 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2021-06-06 00:09:15,274 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-06-06 00:09:15,522 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2021-06-06 00:09:15,705 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2021-06-06 00:09:16,029 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 46 [2021-06-06 00:09:16,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:16,303 INFO L93 Difference]: Finished difference Result 2583 states and 8123 transitions. [2021-06-06 00:09:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:09:16,303 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:16,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:16,306 INFO L225 Difference]: With dead ends: 2583 [2021-06-06 00:09:16,306 INFO L226 Difference]: Without dead ends: 2553 [2021-06-06 00:09:16,307 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 5132.8ms TimeCoverageRelationStatistics Valid=419, Invalid=1837, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:09:16,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-06-06 00:09:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1496. [2021-06-06 00:09:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3531772575250836) internal successors, (5013), 1495 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5013 transitions. [2021-06-06 00:09:16,327 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5013 transitions. Word has length 26 [2021-06-06 00:09:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:16,327 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5013 transitions. [2021-06-06 00:09:16,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5013 transitions. [2021-06-06 00:09:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:16,329 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:16,329 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:16,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable805,54 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:16,529 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash 39724387, now seen corresponding path program 15 times [2021-06-06 00:09:16,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:16,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823158844] [2021-06-06 00:09:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:16,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:16,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823158844] [2021-06-06 00:09:16,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823158844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:16,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543685461] [2021-06-06 00:09:16,796 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 [2021-06-06 00:09:16,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:16,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:16,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:09:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:17,078 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-06 00:09:17,297 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:09:17,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:17,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:17,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:09:17,400 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:17,413 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:17,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:09:17,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:17,709 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 121 [2021-06-06 00:09:17,710 INFO L628 ElimStorePlain]: treesize reduction 148, result has 71.5 percent of original size [2021-06-06 00:09:17,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:17,721 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:17,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:09:17,723 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:17,836 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-06 00:09:17,836 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:17,847 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:17,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:17,849 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:17,959 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:09:17,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:17,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:17,972 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:17,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:09:17,973 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:18,083 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:09:18,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:18,093 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:09:18,096 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:18,199 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-06 00:09:18,199 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:18,210 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:18,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:18,211 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:18,310 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:18,322 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:18,324 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:18,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:18,333 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:18,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:18,333 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:18,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:18,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:09:18,426 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:18,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:18,515 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:09:18,515 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:158 [2021-06-06 00:09:18,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:18,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543685461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:18,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:18,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:09:18,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385682464] [2021-06-06 00:09:18,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:18,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:18,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:18,656 INFO L87 Difference]: Start difference. First operand 1496 states and 5013 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:19,653 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-06-06 00:09:20,099 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2021-06-06 00:09:20,462 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2021-06-06 00:09:20,767 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-06-06 00:09:21,278 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-06 00:09:21,638 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2021-06-06 00:09:22,085 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 73 [2021-06-06 00:09:22,544 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-06-06 00:09:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:22,647 INFO L93 Difference]: Finished difference Result 2835 states and 8886 transitions. [2021-06-06 00:09:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:09:22,647 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:22,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:22,651 INFO L225 Difference]: With dead ends: 2835 [2021-06-06 00:09:22,651 INFO L226 Difference]: Without dead ends: 2805 [2021-06-06 00:09:22,651 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 4025.5ms TimeCoverageRelationStatistics Valid=392, Invalid=1588, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:09:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2021-06-06 00:09:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 1506. [2021-06-06 00:09:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.359468438538206) internal successors, (5056), 1505 states have internal predecessors, (5056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5056 transitions. [2021-06-06 00:09:22,672 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5056 transitions. Word has length 26 [2021-06-06 00:09:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:22,672 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5056 transitions. [2021-06-06 00:09:22,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5056 transitions. [2021-06-06 00:09:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:22,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:22,674 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:22,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable839,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:22,875 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1043919835, now seen corresponding path program 40 times [2021-06-06 00:09:22,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:22,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870392799] [2021-06-06 00:09:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:23,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:23,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870392799] [2021-06-06 00:09:23,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870392799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:23,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932859379] [2021-06-06 00:09:23,122 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 [2021-06-06 00:09:23,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:23,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:23,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:09:23,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:23,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:09:23,608 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:09:23,615 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:09:23,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:23,632 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:09:23,638 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:09:23,645 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:09:23,652 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:09:23,661 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:23,669 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:09:23,679 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:09:23,687 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:09:23,702 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:23,709 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:23,716 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:23,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:23,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:09:23,720 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:23,735 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:09:23,736 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:23,736 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:09:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:23,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932859379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:23,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:23,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:09:23,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174092014] [2021-06-06 00:09:23,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:09:23,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:23,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:09:23,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:23,761 INFO L87 Difference]: Start difference. First operand 1506 states and 5056 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:24,504 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-06-06 00:09:24,951 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-06 00:09:25,343 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2021-06-06 00:09:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:26,376 INFO L93 Difference]: Finished difference Result 2978 states and 9427 transitions. [2021-06-06 00:09:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:09:26,376 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:26,380 INFO L225 Difference]: With dead ends: 2978 [2021-06-06 00:09:26,380 INFO L226 Difference]: Without dead ends: 2933 [2021-06-06 00:09:26,380 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 2301.7ms TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:09:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2021-06-06 00:09:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1506. [2021-06-06 00:09:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.3601328903654486) internal successors, (5057), 1505 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5057 transitions. [2021-06-06 00:09:26,402 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5057 transitions. Word has length 26 [2021-06-06 00:09:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:26,402 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5057 transitions. [2021-06-06 00:09:26,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5057 transitions. [2021-06-06 00:09:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:26,405 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:26,405 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:26,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable867,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:26,620 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1417398809, now seen corresponding path program 41 times [2021-06-06 00:09:26,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:26,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011844206] [2021-06-06 00:09:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:26,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:26,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011844206] [2021-06-06 00:09:26,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011844206] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:26,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279683705] [2021-06-06 00:09:26,853 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 [2021-06-06 00:09:26,877 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:26,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:26,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:09:26,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:27,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,301 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:09:27,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:09:27,304 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,317 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:09:27,318 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,338 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:27,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:09:27,344 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,363 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:09:27,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:09:27,365 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,379 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:09:27,379 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,400 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:09:27,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:09:27,402 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,422 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-06-06 00:09:27,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 23 [2021-06-06 00:09:27,424 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,444 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:09:27,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-06 00:09:27,444 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,465 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:09:27,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:09:27,466 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,479 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:09:27,479 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,499 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:09:27,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 25 [2021-06-06 00:09:27,500 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,514 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:09:27,514 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,527 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:27,528 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,542 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:09:27,542 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,555 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:09:27,556 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:27,563 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:09:27,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:09:27,564 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:27,638 INFO L628 ElimStorePlain]: treesize reduction 69, result has 57.4 percent of original size [2021-06-06 00:09:27,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:09:27,640 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-06 00:09:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:27,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279683705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:27,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:27,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:09:27,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100007616] [2021-06-06 00:09:27,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:09:27,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:27,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:09:27,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:27,726 INFO L87 Difference]: Start difference. First operand 1506 states and 5057 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:28,450 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-06 00:09:29,447 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-06 00:09:30,231 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-06-06 00:09:30,509 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2021-06-06 00:09:31,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:31,021 INFO L93 Difference]: Finished difference Result 3558 states and 11107 transitions. [2021-06-06 00:09:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:09:31,022 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:31,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:31,026 INFO L225 Difference]: With dead ends: 3558 [2021-06-06 00:09:31,026 INFO L226 Difference]: Without dead ends: 3498 [2021-06-06 00:09:31,026 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 2936.2ms TimeCoverageRelationStatistics Valid=813, Invalid=3347, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:09:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2021-06-06 00:09:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 1522. [2021-06-06 00:09:31,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.3721236028928336) internal successors, (5129), 1521 states have internal predecessors, (5129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:31,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 5129 transitions. [2021-06-06 00:09:31,051 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 5129 transitions. Word has length 26 [2021-06-06 00:09:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:31,051 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 5129 transitions. [2021-06-06 00:09:31,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 5129 transitions. [2021-06-06 00:09:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:31,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:31,053 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:31,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable965 [2021-06-06 00:09:31,254 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:31,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1034556623, now seen corresponding path program 16 times [2021-06-06 00:09:31,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:31,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219312876] [2021-06-06 00:09:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:31,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:31,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219312876] [2021-06-06 00:09:31,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219312876] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:31,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677204773] [2021-06-06 00:09:31,608 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 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 [2021-06-06 00:09:31,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:31,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:31,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:09:31,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:31,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:31,942 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:31,947 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:09:31,953 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:09:31,960 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:31,965 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:31,971 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:31,976 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:31,981 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:31,986 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:31,991 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:31,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:09:31,997 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:31,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:31,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:32,002 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:32,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:32,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:09:32,006 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:32,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:32,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:32,011 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:32,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:32,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:32,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:09:32,015 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:32,031 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:09:32,032 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:32,032 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:09:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:32,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677204773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:32,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:32,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:09:32,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541099731] [2021-06-06 00:09:32,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:32,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:32,052 INFO L87 Difference]: Start difference. First operand 1522 states and 5129 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:32,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:32,682 INFO L93 Difference]: Finished difference Result 1905 states and 6288 transitions. [2021-06-06 00:09:32,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:09:32,683 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:32,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:32,685 INFO L225 Difference]: With dead ends: 1905 [2021-06-06 00:09:32,685 INFO L226 Difference]: Without dead ends: 1890 [2021-06-06 00:09:32,685 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 872.4ms TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:09:32,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-06-06 00:09:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1530. [2021-06-06 00:09:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.368214519293656) internal successors, (5150), 1529 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 5150 transitions. [2021-06-06 00:09:32,703 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 5150 transitions. Word has length 26 [2021-06-06 00:09:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:32,703 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 5150 transitions. [2021-06-06 00:09:32,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 5150 transitions. [2021-06-06 00:09:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:32,705 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:32,705 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:32,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1070,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:32,915 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:32,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1807218181, now seen corresponding path program 17 times [2021-06-06 00:09:32,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:32,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226958137] [2021-06-06 00:09:32,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:33,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:33,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226958137] [2021-06-06 00:09:33,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226958137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:33,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671728653] [2021-06-06 00:09:33,162 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 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 [2021-06-06 00:09:33,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:33,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:33,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:33,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:33,777 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2021-06-06 00:09:33,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:33,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:33,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:33,903 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,007 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-06-06 00:09:34,008 INFO L628 ElimStorePlain]: treesize reduction 55, result has 71.1 percent of original size [2021-06-06 00:09:34,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:34,014 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:34,019 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,077 INFO L628 ElimStorePlain]: treesize reduction 20, result has 80.2 percent of original size [2021-06-06 00:09:34,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:34,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:34,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:34,081 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:34,104 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:34,105 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:09:34,105 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:211, output treesize:25 [2021-06-06 00:09:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:34,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671728653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:34,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:34,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:09:34,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721195485] [2021-06-06 00:09:34,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:09:34,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:34,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:09:34,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:34,144 INFO L87 Difference]: Start difference. First operand 1530 states and 5150 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:34,835 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-06 00:09:35,163 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2021-06-06 00:09:35,407 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2021-06-06 00:09:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:35,651 INFO L93 Difference]: Finished difference Result 2016 states and 6558 transitions. [2021-06-06 00:09:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:09:35,651 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:35,653 INFO L225 Difference]: With dead ends: 2016 [2021-06-06 00:09:35,653 INFO L226 Difference]: Without dead ends: 1971 [2021-06-06 00:09:35,653 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1768.7ms TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:09:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2021-06-06 00:09:35,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1522. [2021-06-06 00:09:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.3721236028928336) internal successors, (5129), 1521 states have internal predecessors, (5129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 5129 transitions. [2021-06-06 00:09:35,672 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 5129 transitions. Word has length 26 [2021-06-06 00:09:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:35,672 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 5129 transitions. [2021-06-06 00:09:35,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 5129 transitions. [2021-06-06 00:09:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:35,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:35,674 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:35,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1112 [2021-06-06 00:09:35,885 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1195907103, now seen corresponding path program 18 times [2021-06-06 00:09:35,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:35,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535799096] [2021-06-06 00:09:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:36,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:36,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535799096] [2021-06-06 00:09:36,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535799096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:36,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707612331] [2021-06-06 00:09:36,108 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 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 [2021-06-06 00:09:36,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:36,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:36,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:09:36,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:36,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,436 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:36,436 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,453 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:36,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:09:36,454 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,461 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:36,462 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,471 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:36,471 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,478 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:36,479 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,487 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:36,488 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,495 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:36,496 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,503 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:36,504 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,517 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:36,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:36,518 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,528 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:36,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:36,529 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,537 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:36,538 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,545 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:36,546 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,554 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:36,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:09:36,557 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,563 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:36,564 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,570 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:36,571 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:36,576 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:36,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:36,577 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:36,638 INFO L628 ElimStorePlain]: treesize reduction 16, result has 83.5 percent of original size [2021-06-06 00:09:36,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:09:36,640 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:71 [2021-06-06 00:09:36,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:36,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707612331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:36,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:36,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:09:36,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645538849] [2021-06-06 00:09:36,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:36,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:36,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:36,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:36,720 INFO L87 Difference]: Start difference. First operand 1522 states and 5129 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:37,157 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-06-06 00:09:37,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:37,701 INFO L93 Difference]: Finished difference Result 1999 states and 6574 transitions. [2021-06-06 00:09:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:09:37,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:37,704 INFO L225 Difference]: With dead ends: 1999 [2021-06-06 00:09:37,704 INFO L226 Difference]: Without dead ends: 1984 [2021-06-06 00:09:37,704 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1015.3ms TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:09:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-06-06 00:09:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1516. [2021-06-06 00:09:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3716171617161717) internal successors, (5108), 1515 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5108 transitions. [2021-06-06 00:09:37,722 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5108 transitions. Word has length 26 [2021-06-06 00:09:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:37,722 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5108 transitions. [2021-06-06 00:09:37,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5108 transitions. [2021-06-06 00:09:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:37,724 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:37,724 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:37,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1135 [2021-06-06 00:09:37,924 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1432729289, now seen corresponding path program 19 times [2021-06-06 00:09:37,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:37,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331992434] [2021-06-06 00:09:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:38,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:38,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331992434] [2021-06-06 00:09:38,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331992434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:38,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800403492] [2021-06-06 00:09:38,332 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 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 [2021-06-06 00:09:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:38,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:09:38,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:38,793 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_133], 2=[A, v_prenex_132]} [2021-06-06 00:09:38,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:38,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:09:38,797 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:38,876 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-06 00:09:38,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:38,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:38,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:38,880 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:38,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:38,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:38,919 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:38,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:38,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:38,922 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:38,959 INFO L628 ElimStorePlain]: treesize reduction 15, result has 76.9 percent of original size [2021-06-06 00:09:38,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:09:38,960 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:25 [2021-06-06 00:09:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:38,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800403492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:38,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:38,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:09:38,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142039096] [2021-06-06 00:09:38,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:38,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:38,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:38,991 INFO L87 Difference]: Start difference. First operand 1516 states and 5108 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:40,038 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-06 00:09:40,187 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2021-06-06 00:09:40,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:40,262 INFO L93 Difference]: Finished difference Result 2061 states and 6772 transitions. [2021-06-06 00:09:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:09:40,262 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:40,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:40,265 INFO L225 Difference]: With dead ends: 2061 [2021-06-06 00:09:40,265 INFO L226 Difference]: Without dead ends: 2046 [2021-06-06 00:09:40,265 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1666.9ms TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:09:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-06-06 00:09:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1517. [2021-06-06 00:09:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 3.3726912928759893) internal successors, (5113), 1516 states have internal predecessors, (5113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 5113 transitions. [2021-06-06 00:09:40,285 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 5113 transitions. Word has length 26 [2021-06-06 00:09:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:40,285 INFO L482 AbstractCegarLoop]: Abstraction has 1517 states and 5113 transitions. [2021-06-06 00:09:40,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:40,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 5113 transitions. [2021-06-06 00:09:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:40,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:40,287 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:40,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1184,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:40,487 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:40,487 INFO L82 PathProgramCache]: Analyzing trace with hash 826223339, now seen corresponding path program 20 times [2021-06-06 00:09:40,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:40,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165227143] [2021-06-06 00:09:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:40,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:40,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165227143] [2021-06-06 00:09:40,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165227143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:40,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584345667] [2021-06-06 00:09:40,664 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 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 [2021-06-06 00:09:40,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:40,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:40,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:40,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:41,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,283 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:41,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:41,284 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,297 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:41,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:09:41,302 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,412 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:09:41,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,432 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:41,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:09:41,434 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,450 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:41,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:09:41,453 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,565 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:09:41,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:41,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,584 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:41,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:09:41,586 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,601 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:41,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:09:41,603 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,698 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,712 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:41,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:09:41,724 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:41,737 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:41,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:09:41,738 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:41,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:41,838 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:09:41,838 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:329, output treesize:224 [2021-06-06 00:09:41,988 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2021-06-06 00:09:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:42,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584345667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:42,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:42,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:09:42,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040888347] [2021-06-06 00:09:42,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:09:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:09:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:42,018 INFO L87 Difference]: Start difference. First operand 1517 states and 5113 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:43,471 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-06 00:09:43,636 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-06-06 00:09:43,880 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-06-06 00:09:44,045 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2021-06-06 00:09:44,222 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-06-06 00:09:44,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:44,383 INFO L93 Difference]: Finished difference Result 2205 states and 7070 transitions. [2021-06-06 00:09:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:09:44,383 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:44,385 INFO L225 Difference]: With dead ends: 2205 [2021-06-06 00:09:44,385 INFO L226 Difference]: Without dead ends: 2165 [2021-06-06 00:09:44,386 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2522.3ms TimeCoverageRelationStatistics Valid=350, Invalid=1906, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:09:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2021-06-06 00:09:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1566. [2021-06-06 00:09:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 3.3686900958466452) internal successors, (5272), 1565 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 5272 transitions. [2021-06-06 00:09:44,404 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 5272 transitions. Word has length 26 [2021-06-06 00:09:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:44,404 INFO L482 AbstractCegarLoop]: Abstraction has 1566 states and 5272 transitions. [2021-06-06 00:09:44,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 5272 transitions. [2021-06-06 00:09:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:44,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:44,406 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:44,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1196,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:44,608 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:44,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1409101781, now seen corresponding path program 21 times [2021-06-06 00:09:44,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:44,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265571045] [2021-06-06 00:09:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:44,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:44,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265571045] [2021-06-06 00:09:44,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265571045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:44,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626527682] [2021-06-06 00:09:44,791 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 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 [2021-06-06 00:09:44,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:44,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:44,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:09:44,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:45,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:45,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:09:45,080 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,093 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:45,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:09:45,099 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,107 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:45,108 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,116 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:45,116 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,125 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:45,125 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,133 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:45,134 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,153 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:45,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:09:45,157 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,166 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:45,167 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,187 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:45,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:09:45,190 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,208 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:45,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:45,210 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,219 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:45,220 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,230 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2021-06-06 00:09:45,231 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,239 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:45,240 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,254 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:45,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:09:45,255 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,262 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:45,262 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,267 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:09:45,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:45,268 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:45,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:09:45,321 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:729, output treesize:157 [2021-06-06 00:09:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:45,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626527682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:45,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:45,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:09:45,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324604615] [2021-06-06 00:09:45,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:45,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:45,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:45,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:45,565 INFO L87 Difference]: Start difference. First operand 1566 states and 5272 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:46,255 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-06-06 00:09:46,868 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2021-06-06 00:09:47,028 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2021-06-06 00:09:47,349 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-06-06 00:09:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:47,492 INFO L93 Difference]: Finished difference Result 2352 states and 7640 transitions. [2021-06-06 00:09:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:09:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:47,495 INFO L225 Difference]: With dead ends: 2352 [2021-06-06 00:09:47,495 INFO L226 Difference]: Without dead ends: 2327 [2021-06-06 00:09:47,496 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1969.7ms TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:09:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2021-06-06 00:09:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 1537. [2021-06-06 00:09:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1537 states, 1536 states have (on average 3.373046875) internal successors, (5181), 1536 states have internal predecessors, (5181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 5181 transitions. [2021-06-06 00:09:47,515 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 5181 transitions. Word has length 26 [2021-06-06 00:09:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:47,515 INFO L482 AbstractCegarLoop]: Abstraction has 1537 states and 5181 transitions. [2021-06-06 00:09:47,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 5181 transitions. [2021-06-06 00:09:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:47,517 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:47,517 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:47,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1258 [2021-06-06 00:09:47,721 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:47,721 INFO L82 PathProgramCache]: Analyzing trace with hash 957187695, now seen corresponding path program 22 times [2021-06-06 00:09:47,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:47,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898470662] [2021-06-06 00:09:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:47,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:47,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898470662] [2021-06-06 00:09:47,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898470662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:47,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783479426] [2021-06-06 00:09:47,915 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 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:09:47,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:47,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:47,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:47,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:48,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:48,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:48,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:48,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:09:48,191 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:48,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:48,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:48,196 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:48,265 INFO L628 ElimStorePlain]: treesize reduction 108, result has 42.2 percent of original size [2021-06-06 00:09:48,265 INFO L518 ElimStorePlain]: Eliminatee v_prenex_151 vanished before elimination [2021-06-06 00:09:48,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:48,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:48,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:09:48,269 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:48,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:48,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:48,292 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:48,309 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:48,311 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:09:48,311 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:244, output treesize:24 [2021-06-06 00:09:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:48,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783479426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:48,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:48,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:09:48,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724131505] [2021-06-06 00:09:48,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:09:48,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:48,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:09:48,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:09:48,349 INFO L87 Difference]: Start difference. First operand 1537 states and 5181 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:48,642 INFO L93 Difference]: Finished difference Result 1678 states and 5570 transitions. [2021-06-06 00:09:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:09:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:48,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:48,644 INFO L225 Difference]: With dead ends: 1678 [2021-06-06 00:09:48,644 INFO L226 Difference]: Without dead ends: 1663 [2021-06-06 00:09:48,644 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 407.3ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2021-06-06 00:09:48,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1561. [2021-06-06 00:09:48,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 3.3705128205128205) internal successors, (5258), 1560 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 5258 transitions. [2021-06-06 00:09:48,661 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 5258 transitions. Word has length 26 [2021-06-06 00:09:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:48,661 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 5258 transitions. [2021-06-06 00:09:48,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:48,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 5258 transitions. [2021-06-06 00:09:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:48,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:48,663 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:48,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1314,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:48,880 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1766954001, now seen corresponding path program 23 times [2021-06-06 00:09:48,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:48,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318211102] [2021-06-06 00:09:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:49,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:49,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318211102] [2021-06-06 00:09:49,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318211102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:49,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401956877] [2021-06-06 00:09:49,048 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:09:49,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:49,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:49,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:49,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:49,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,285 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:49,286 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,293 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:49,294 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,303 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:49,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:49,304 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:49,315 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,322 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:49,322 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,333 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:49,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:49,334 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,342 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:49,342 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,352 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:49,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:09:49,353 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,363 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:09:49,364 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,372 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:09:49,372 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,379 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:49,380 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,386 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:49,387 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,394 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:49,395 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,402 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:49,402 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,409 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:49,410 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,415 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:09:49,418 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,472 INFO L628 ElimStorePlain]: treesize reduction 55, result has 55.6 percent of original size [2021-06-06 00:09:49,473 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:09:49,473 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:569, output treesize:69 [2021-06-06 00:09:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:49,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401956877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:49,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:49,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:09:49,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295021185] [2021-06-06 00:09:49,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:49,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:49,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:49,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:49,554 INFO L87 Difference]: Start difference. First operand 1561 states and 5258 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:50,320 INFO L93 Difference]: Finished difference Result 2101 states and 6894 transitions. [2021-06-06 00:09:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:09:50,320 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:50,323 INFO L225 Difference]: With dead ends: 2101 [2021-06-06 00:09:50,323 INFO L226 Difference]: Without dead ends: 2076 [2021-06-06 00:09:50,323 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 806.6ms TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:09:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2021-06-06 00:09:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1550. [2021-06-06 00:09:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.378954163976759) internal successors, (5234), 1549 states have internal predecessors, (5234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 5234 transitions. [2021-06-06 00:09:50,341 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 5234 transitions. Word has length 26 [2021-06-06 00:09:50,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:50,341 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 5234 transitions. [2021-06-06 00:09:50,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:50,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 5234 transitions. [2021-06-06 00:09:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:50,343 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:50,343 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:50,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1328,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:50,545 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 423152783, now seen corresponding path program 24 times [2021-06-06 00:09:50,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:50,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024839891] [2021-06-06 00:09:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:50,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:50,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024839891] [2021-06-06 00:09:50,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024839891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:50,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208818445] [2021-06-06 00:09:50,855 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 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 [2021-06-06 00:09:50,878 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:50,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:50,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:50,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:51,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,066 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:09:51,067 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:51,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:09:51,079 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,087 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:09:51,088 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,094 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:51,095 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,105 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:51,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-06-06 00:09:51,106 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,113 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:51,115 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,125 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:51,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:09:51,126 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,136 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:09:51,136 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,144 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:09:51,145 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,156 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:51,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:09:51,157 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,166 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:51,167 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,176 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:09:51,177 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,186 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:09:51,187 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,195 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:51,196 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,206 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:51,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:09:51,210 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:51,215 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:51,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:09:51,216 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:51,278 INFO L628 ElimStorePlain]: treesize reduction 15, result has 83.9 percent of original size [2021-06-06 00:09:51,279 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:09:51,279 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:78 [2021-06-06 00:09:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:51,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208818445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:51,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:51,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:09:51,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512791000] [2021-06-06 00:09:51,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:51,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:51,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:51,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:51,349 INFO L87 Difference]: Start difference. First operand 1550 states and 5234 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:52,455 INFO L93 Difference]: Finished difference Result 2118 states and 6970 transitions. [2021-06-06 00:09:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:09:52,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:52,458 INFO L225 Difference]: With dead ends: 2118 [2021-06-06 00:09:52,458 INFO L226 Difference]: Without dead ends: 2084 [2021-06-06 00:09:52,459 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1210.2ms TimeCoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:09:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-06-06 00:09:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1569. [2021-06-06 00:09:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 3.3832908163265305) internal successors, (5305), 1568 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 5305 transitions. [2021-06-06 00:09:52,478 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 5305 transitions. Word has length 26 [2021-06-06 00:09:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:52,478 INFO L482 AbstractCegarLoop]: Abstraction has 1569 states and 5305 transitions. [2021-06-06 00:09:52,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 5305 transitions. [2021-06-06 00:09:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:52,480 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:52,480 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:52,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1342 [2021-06-06 00:09:52,680 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1410644395, now seen corresponding path program 25 times [2021-06-06 00:09:52,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:52,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261936016] [2021-06-06 00:09:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:53,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:53,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261936016] [2021-06-06 00:09:53,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261936016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:53,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865508661] [2021-06-06 00:09:53,026 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 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 [2021-06-06 00:09:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:53,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:53,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:53,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:53,576 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:53,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:09:53,577 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:53,592 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:53,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:09:53,597 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:53,915 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-06-06 00:09:53,915 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.4 percent of original size [2021-06-06 00:09:53,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:53,936 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:53,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:09:53,937 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:53,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:53,951 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:53,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:09:53,956 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,095 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-06 00:09:54,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,118 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:54,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:09:54,119 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,138 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:09:54,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:09:54,141 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,276 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-06 00:09:54,276 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:54,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,292 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:54,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:09:54,297 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,312 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:54,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:54,313 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,556 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-06-06 00:09:54,557 INFO L628 ElimStorePlain]: treesize reduction 16, result has 95.3 percent of original size [2021-06-06 00:09:54,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:54,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:09:54,575 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,589 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:09:54,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:09:54,590 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,809 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-06 00:09:54,809 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size [2021-06-06 00:09:54,828 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:09:54,828 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 11 variables, input treesize:457, output treesize:253 [2021-06-06 00:09:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:54,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865508661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:54,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:54,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:09:54,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447568805] [2021-06-06 00:09:54,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:54,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:54,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:54,977 INFO L87 Difference]: Start difference. First operand 1569 states and 5305 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:55,399 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-06 00:09:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:56,036 INFO L93 Difference]: Finished difference Result 2132 states and 7032 transitions. [2021-06-06 00:09:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:09:56,036 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:56,039 INFO L225 Difference]: With dead ends: 2132 [2021-06-06 00:09:56,039 INFO L226 Difference]: Without dead ends: 2107 [2021-06-06 00:09:56,039 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1364.7ms TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:09:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2021-06-06 00:09:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1575. [2021-06-06 00:09:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.3818297331639138) internal successors, (5323), 1574 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 5323 transitions. [2021-06-06 00:09:56,057 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 5323 transitions. Word has length 26 [2021-06-06 00:09:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:56,057 INFO L482 AbstractCegarLoop]: Abstraction has 1575 states and 5323 transitions. [2021-06-06 00:09:56,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 5323 transitions. [2021-06-06 00:09:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:56,059 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:56,059 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:56,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1361,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:56,261 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1510554133, now seen corresponding path program 42 times [2021-06-06 00:09:56,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:56,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052414440] [2021-06-06 00:09:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:56,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:56,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052414440] [2021-06-06 00:09:56,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052414440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:56,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874619365] [2021-06-06 00:09:56,553 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 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 [2021-06-06 00:09:56,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:56,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:56,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:56,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:57,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:57,015 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:09:57,022 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:09:57,028 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:09:57,034 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:09:57,041 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:57,048 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:09:57,055 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:09:57,062 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:09:57,068 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:09:57,075 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:09:57,081 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:09:57,087 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:09:57,093 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:09:57,099 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:57,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:57,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:09:57,102 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:57,119 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:09:57,120 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:57,120 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:09:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:57,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874619365] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:57,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:57,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:09:57,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080458077] [2021-06-06 00:09:57,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:57,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:57,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:57,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:57,140 INFO L87 Difference]: Start difference. First operand 1575 states and 5323 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:58,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:58,058 INFO L93 Difference]: Finished difference Result 2018 states and 6640 transitions. [2021-06-06 00:09:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:09:58,058 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:09:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:58,060 INFO L225 Difference]: With dead ends: 2018 [2021-06-06 00:09:58,060 INFO L226 Difference]: Without dead ends: 1992 [2021-06-06 00:09:58,060 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 956.0ms TimeCoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:09:58,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-06-06 00:09:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1579. [2021-06-06 00:09:58,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.379594423320659) internal successors, (5333), 1578 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5333 transitions. [2021-06-06 00:09:58,078 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5333 transitions. Word has length 26 [2021-06-06 00:09:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:58,078 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5333 transitions. [2021-06-06 00:09:58,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5333 transitions. [2021-06-06 00:09:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:58,080 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:58,080 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:09:58,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1435,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:58,293 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash -442679569, now seen corresponding path program 43 times [2021-06-06 00:09:58,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:58,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244355314] [2021-06-06 00:09:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:58,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:58,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244355314] [2021-06-06 00:09:58,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244355314] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:58,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132861688] [2021-06-06 00:09:58,579 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 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 [2021-06-06 00:09:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:58,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:09:58,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:58,895 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_163], 5=[v_prenex_165, v_prenex_167]} [2021-06-06 00:09:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:58,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:58,901 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,972 INFO L628 ElimStorePlain]: treesize reduction 135, result has 43.3 percent of original size [2021-06-06 00:09:58,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:58,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:09:58,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:59,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:59,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:09:59,001 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:59,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:59,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:09:59,033 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:59,051 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:09:59,051 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:24 [2021-06-06 00:09:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:09:59,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132861688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:59,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:59,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:09:59,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463703603] [2021-06-06 00:09:59,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:59,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:59,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:59,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:59,083 INFO L87 Difference]: Start difference. First operand 1579 states and 5333 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:00,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:00,529 INFO L93 Difference]: Finished difference Result 2235 states and 7337 transitions. [2021-06-06 00:10:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:10:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:00,532 INFO L225 Difference]: With dead ends: 2235 [2021-06-06 00:10:00,532 INFO L226 Difference]: Without dead ends: 2220 [2021-06-06 00:10:00,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1501.1ms TimeCoverageRelationStatistics Valid=403, Invalid=1667, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:10:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2021-06-06 00:10:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1579. [2021-06-06 00:10:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.379594423320659) internal successors, (5333), 1578 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5333 transitions. [2021-06-06 00:10:00,551 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5333 transitions. Word has length 26 [2021-06-06 00:10:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:00,551 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5333 transitions. [2021-06-06 00:10:00,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5333 transitions. [2021-06-06 00:10:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:00,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:00,553 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:00,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1543 [2021-06-06 00:10:00,754 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:00,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1031054993, now seen corresponding path program 26 times [2021-06-06 00:10:00,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:00,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762936626] [2021-06-06 00:10:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:01,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:01,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762936626] [2021-06-06 00:10:01,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762936626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:01,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713630287] [2021-06-06 00:10:01,099 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 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 [2021-06-06 00:10:01,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:10:01,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:01,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:10:01,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:01,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,325 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:10:01,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,334 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:01,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:10:01,338 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,345 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:10:01,346 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,352 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:10:01,353 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,362 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:01,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-06-06 00:10:01,363 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,370 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:10:01,371 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,381 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:01,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:10:01,382 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,390 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:10:01,390 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,397 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:10:01,398 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,407 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:01,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:10:01,408 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,416 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:10:01,417 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,425 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:01,425 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,433 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:01,434 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,440 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:10:01,441 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,449 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:01,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:10:01,452 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:01,457 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:01,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:01,458 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:01,516 INFO L628 ElimStorePlain]: treesize reduction 15, result has 83.9 percent of original size [2021-06-06 00:10:01,517 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:10:01,517 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:78 [2021-06-06 00:10:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:01,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713630287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:01,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:01,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:10:01,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431724378] [2021-06-06 00:10:01,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:10:01,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:01,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:10:01,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:10:01,587 INFO L87 Difference]: Start difference. First operand 1579 states and 5333 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:02,042 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-06-06 00:10:02,566 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-06-06 00:10:02,719 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-06 00:10:02,846 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-06-06 00:10:03,015 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2021-06-06 00:10:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:03,642 INFO L93 Difference]: Finished difference Result 2244 states and 7303 transitions. [2021-06-06 00:10:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:10:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:03,645 INFO L225 Difference]: With dead ends: 2244 [2021-06-06 00:10:03,645 INFO L226 Difference]: Without dead ends: 2225 [2021-06-06 00:10:03,645 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2065.9ms TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:10:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2021-06-06 00:10:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1598. [2021-06-06 00:10:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 3.3844708829054477) internal successors, (5405), 1597 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 5405 transitions. [2021-06-06 00:10:03,671 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 5405 transitions. Word has length 26 [2021-06-06 00:10:03,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:03,671 INFO L482 AbstractCegarLoop]: Abstraction has 1598 states and 5405 transitions. [2021-06-06 00:10:03,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 5405 transitions. [2021-06-06 00:10:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:03,673 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:03,673 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:03,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1557,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:03,878 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:03,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:03,879 INFO L82 PathProgramCache]: Analyzing trace with hash 519326571, now seen corresponding path program 44 times [2021-06-06 00:10:03,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:03,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834152352] [2021-06-06 00:10:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:04,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:04,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834152352] [2021-06-06 00:10:04,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834152352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:04,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820726240] [2021-06-06 00:10:04,148 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 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 [2021-06-06 00:10:04,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:10:04,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:04,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:10:04,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,634 INFO L354 Elim1Store]: treesize reduction 4, result has 85.2 percent of original size [2021-06-06 00:10:04,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 41 [2021-06-06 00:10:04,637 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,678 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-06 00:10:04,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 26 [2021-06-06 00:10:04,679 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,702 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-06 00:10:04,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-06 00:10:04,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,727 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:10:04,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-06 00:10:04,728 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,750 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:10:04,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:10:04,753 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,767 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:04,767 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,780 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:10:04,781 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,794 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:10:04,795 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,809 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:10:04,809 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,822 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:10:04,823 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,836 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:10:04,837 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,850 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:10:04,851 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,862 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:04,863 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,875 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:04,876 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,894 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:04,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-06 00:10:04,900 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:04,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:04,907 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:04,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:04,908 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:05,013 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2021-06-06 00:10:05,018 INFO L628 ElimStorePlain]: treesize reduction 34, result has 75.2 percent of original size [2021-06-06 00:10:05,019 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:10:05,019 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:745, output treesize:75 [2021-06-06 00:10:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:05,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820726240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:05,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:05,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-06-06 00:10:05,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430231205] [2021-06-06 00:10:05,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 00:10:05,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 00:10:05,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:10:05,082 INFO L87 Difference]: Start difference. First operand 1598 states and 5405 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:07,123 INFO L93 Difference]: Finished difference Result 2476 states and 7899 transitions. [2021-06-06 00:10:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:10:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:07,126 INFO L225 Difference]: With dead ends: 2476 [2021-06-06 00:10:07,126 INFO L226 Difference]: Without dead ends: 2432 [2021-06-06 00:10:07,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 1950.8ms TimeCoverageRelationStatistics Valid=508, Invalid=2572, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:10:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-06-06 00:10:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1605. [2021-06-06 00:10:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1605 states, 1604 states have (on average 3.385286783042394) internal successors, (5430), 1604 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 5430 transitions. [2021-06-06 00:10:07,147 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 5430 transitions. Word has length 26 [2021-06-06 00:10:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:07,147 INFO L482 AbstractCegarLoop]: Abstraction has 1605 states and 5430 transitions. [2021-06-06 00:10:07,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 5430 transitions. [2021-06-06 00:10:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:07,149 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:07,149 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:07,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1576 [2021-06-06 00:10:07,356 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash -456992273, now seen corresponding path program 45 times [2021-06-06 00:10:07,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:07,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756261816] [2021-06-06 00:10:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:07,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:07,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756261816] [2021-06-06 00:10:07,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756261816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:07,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248378315] [2021-06-06 00:10:07,543 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 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 [2021-06-06 00:10:07,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:10:07,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:07,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-06 00:10:07,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:08,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,123 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:10:08,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-06 00:10:08,131 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,171 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:10:08,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-06 00:10:08,174 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,219 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:10:08,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 49 [2021-06-06 00:10:08,227 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,245 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:10:08,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:08,246 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,285 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:10:08,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 47 [2021-06-06 00:10:08,288 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,319 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-06 00:10:08,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 36 [2021-06-06 00:10:08,321 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,357 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:10:08,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-06 00:10:08,363 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,404 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:10:08,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:10:08,409 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,427 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:10:08,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:08,427 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,480 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:10:08,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 55 [2021-06-06 00:10:08,488 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,532 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:10:08,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-06 00:10:08,539 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,556 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:10:08,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:08,557 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,594 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:10:08,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-06 00:10:08,598 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,615 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:10:08,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:08,615 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,631 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:10:08,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:08,632 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:08,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:08,659 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:10:08,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-06 00:10:08,664 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:09,028 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-06-06 00:10:09,028 INFO L628 ElimStorePlain]: treesize reduction 251, result has 57.4 percent of original size [2021-06-06 00:10:09,036 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:10:09,036 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:945, output treesize:413 [2021-06-06 00:10:09,242 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2021-06-06 00:10:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:09,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248378315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:09,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:09,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-06 00:10:09,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119436252] [2021-06-06 00:10:09,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:10:09,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:09,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:10:09,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:10:09,383 INFO L87 Difference]: Start difference. First operand 1605 states and 5430 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:11,664 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-06-06 00:10:12,278 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2021-06-06 00:10:12,451 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-06-06 00:10:12,741 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-06-06 00:10:13,023 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2021-06-06 00:10:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:13,244 INFO L93 Difference]: Finished difference Result 3600 states and 11338 transitions. [2021-06-06 00:10:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-06 00:10:13,244 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:13,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:13,248 INFO L225 Difference]: With dead ends: 3600 [2021-06-06 00:10:13,248 INFO L226 Difference]: Without dead ends: 3564 [2021-06-06 00:10:13,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 3626.3ms TimeCoverageRelationStatistics Valid=893, Invalid=4959, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:10:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-06-06 00:10:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 1759. [2021-06-06 00:10:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 3.4044368600682593) internal successors, (5985), 1758 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 5985 transitions. [2021-06-06 00:10:13,276 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 5985 transitions. Word has length 26 [2021-06-06 00:10:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:13,276 INFO L482 AbstractCegarLoop]: Abstraction has 1759 states and 5985 transitions. [2021-06-06 00:10:13,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 5985 transitions. [2021-06-06 00:10:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:13,278 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:13,278 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:13,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1682 [2021-06-06 00:10:13,485 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:13,485 INFO L82 PathProgramCache]: Analyzing trace with hash 745320095, now seen corresponding path program 46 times [2021-06-06 00:10:13,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:13,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44331361] [2021-06-06 00:10:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:13,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:13,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44331361] [2021-06-06 00:10:13,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44331361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:13,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521392273] [2021-06-06 00:10:13,644 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 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 [2021-06-06 00:10:13,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:10:13,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:13,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-06 00:10:13,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:14,462 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_183, v_prenex_187], 6=[A, v_prenex_185]} [2021-06-06 00:10:14,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:14,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:10:14,469 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:14,576 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-06-06 00:10:14,576 INFO L628 ElimStorePlain]: treesize reduction 151, result has 44.9 percent of original size [2021-06-06 00:10:14,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:14,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:10:14,582 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:14,616 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:14,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:14,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:14,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:10:14,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:14,649 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:14,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:14,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:14,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:10:14,653 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:14,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:14,680 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:10:14,680 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 16 variables, input treesize:314, output treesize:31 [2021-06-06 00:10:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:14,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521392273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:14,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:14,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:10:14,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356816367] [2021-06-06 00:10:14,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:14,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:14,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:14,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:14,713 INFO L87 Difference]: Start difference. First operand 1759 states and 5985 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:15,770 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 58 [2021-06-06 00:10:16,397 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2021-06-06 00:10:16,565 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-06-06 00:10:16,883 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 102 [2021-06-06 00:10:17,027 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:10:17,272 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2021-06-06 00:10:17,554 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-06-06 00:10:17,845 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 169 [2021-06-06 00:10:18,061 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 74 [2021-06-06 00:10:18,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:18,270 INFO L93 Difference]: Finished difference Result 3623 states and 11573 transitions. [2021-06-06 00:10:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:10:18,270 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:18,276 INFO L225 Difference]: With dead ends: 3623 [2021-06-06 00:10:18,276 INFO L226 Difference]: Without dead ends: 3587 [2021-06-06 00:10:18,276 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 3275.5ms TimeCoverageRelationStatistics Valid=521, Invalid=2341, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:10:18,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-06-06 00:10:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 1939. [2021-06-06 00:10:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1938 states have (on average 3.4262125902992775) internal successors, (6640), 1938 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 6640 transitions. [2021-06-06 00:10:18,315 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 6640 transitions. Word has length 26 [2021-06-06 00:10:18,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:18,315 INFO L482 AbstractCegarLoop]: Abstraction has 1939 states and 6640 transitions. [2021-06-06 00:10:18,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 6640 transitions. [2021-06-06 00:10:18,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:18,317 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:18,317 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:18,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1833 [2021-06-06 00:10:18,525 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1715998549, now seen corresponding path program 47 times [2021-06-06 00:10:18,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:18,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011049390] [2021-06-06 00:10:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:18,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:18,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011049390] [2021-06-06 00:10:18,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011049390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:18,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072487181] [2021-06-06 00:10:18,729 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 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 [2021-06-06 00:10:18,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:10:18,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:18,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:10:18,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:19,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,148 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:10:19,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-06 00:10:19,151 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,175 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:10:19,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:10:19,179 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,193 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:19,193 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,214 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:10:19,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:10:19,215 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,236 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:10:19,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:10:19,240 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,261 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:19,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:10:19,265 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,278 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:19,279 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,292 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:10:19,292 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,305 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:10:19,306 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,318 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:10:19,319 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,331 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:19,331 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,350 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:19,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:10:19,357 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,369 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:10:19,370 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,382 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:10:19,383 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,394 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:10:19,395 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:19,402 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:10:19,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:10:19,403 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:19,504 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2021-06-06 00:10:19,504 INFO L628 ElimStorePlain]: treesize reduction 56, result has 59.1 percent of original size [2021-06-06 00:10:19,507 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:10:19,507 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:71 [2021-06-06 00:10:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:19,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072487181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:19,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:19,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:10:19,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448314632] [2021-06-06 00:10:19,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:19,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:19,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:19,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:19,585 INFO L87 Difference]: Start difference. First operand 1939 states and 6640 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:21,689 INFO L93 Difference]: Finished difference Result 4085 states and 13117 transitions. [2021-06-06 00:10:21,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:10:21,689 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:21,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:21,694 INFO L225 Difference]: With dead ends: 4085 [2021-06-06 00:10:21,694 INFO L226 Difference]: Without dead ends: 4028 [2021-06-06 00:10:21,694 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 1947.1ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:10:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-06-06 00:10:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 2033. [2021-06-06 00:10:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 3.4463582677165356) internal successors, (7003), 2032 states have internal predecessors, (7003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 7003 transitions. [2021-06-06 00:10:21,725 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 7003 transitions. Word has length 26 [2021-06-06 00:10:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:21,726 INFO L482 AbstractCegarLoop]: Abstraction has 2033 states and 7003 transitions. [2021-06-06 00:10:21,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 7003 transitions. [2021-06-06 00:10:21,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:21,728 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:21,728 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:21,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1869,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:21,928 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash 134504147, now seen corresponding path program 27 times [2021-06-06 00:10:21,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:21,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172390949] [2021-06-06 00:10:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:22,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:22,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172390949] [2021-06-06 00:10:22,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172390949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:22,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334637221] [2021-06-06 00:10:22,206 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 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 [2021-06-06 00:10:22,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:10:22,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:22,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:10:22,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:22,600 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:10:22,796 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-06 00:10:22,941 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:22,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:10:22,942 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,963 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:22,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-06 00:10:22,964 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,276 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 127 [2021-06-06 00:10:23,277 INFO L628 ElimStorePlain]: treesize reduction 74, result has 85.2 percent of original size [2021-06-06 00:10:23,294 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:10:23,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:10:23,296 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,440 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:10:23,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:23,459 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:23,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:10:23,461 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,471 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:23,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:23,472 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,604 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:10:23,605 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:23,620 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:10:23,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:10:23,622 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,747 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:10:23,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:23,769 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:23,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:10:23,772 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:23,897 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:10:23,897 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:23,914 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:23,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:10:23,918 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,036 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:10:24,036 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:24,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:24,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:10:24,055 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,063 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:24,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:10:24,064 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,260 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2021-06-06 00:10:24,260 INFO L628 ElimStorePlain]: treesize reduction 25, result has 91.7 percent of original size [2021-06-06 00:10:24,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:24,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:10:24,276 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:24,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:24,379 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:10:24,380 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:563, output treesize:360 [2021-06-06 00:10:24,537 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2021-06-06 00:10:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:24,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334637221] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:24,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:24,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:10:24,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44620246] [2021-06-06 00:10:24,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:10:24,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:24,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:10:24,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:10:24,583 INFO L87 Difference]: Start difference. First operand 2033 states and 7003 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:25,363 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-06-06 00:10:25,780 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-06 00:10:25,971 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:10:26,167 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-06 00:10:26,698 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2021-06-06 00:10:27,185 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 87 [2021-06-06 00:10:27,581 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2021-06-06 00:10:28,111 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 112 [2021-06-06 00:10:28,763 WARN L205 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 109 [2021-06-06 00:10:29,286 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 90 [2021-06-06 00:10:29,528 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 73 [2021-06-06 00:10:30,375 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 112 [2021-06-06 00:10:30,836 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 76 [2021-06-06 00:10:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:30,973 INFO L93 Difference]: Finished difference Result 2749 states and 9119 transitions. [2021-06-06 00:10:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:10:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:30,976 INFO L225 Difference]: With dead ends: 2749 [2021-06-06 00:10:30,976 INFO L226 Difference]: Without dead ends: 2719 [2021-06-06 00:10:30,976 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 6470.7ms TimeCoverageRelationStatistics Valid=336, Invalid=1920, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:10:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2021-06-06 00:10:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 2036. [2021-06-06 00:10:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2035 states have (on average 3.444226044226044) internal successors, (7009), 2035 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 7009 transitions. [2021-06-06 00:10:30,999 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 7009 transitions. Word has length 26 [2021-06-06 00:10:31,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:31,000 INFO L482 AbstractCegarLoop]: Abstraction has 2036 states and 7009 transitions. [2021-06-06 00:10:31,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 7009 transitions. [2021-06-06 00:10:31,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:31,002 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:31,002 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:31,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1975 [2021-06-06 00:10:31,202 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1483028633, now seen corresponding path program 28 times [2021-06-06 00:10:31,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:31,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052986691] [2021-06-06 00:10:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:31,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:31,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052986691] [2021-06-06 00:10:31,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052986691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:31,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567647315] [2021-06-06 00:10:31,545 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 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 [2021-06-06 00:10:31,567 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:10:31,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:31,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:31,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:31,868 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:10:31,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,964 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:31,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-06 00:10:31,965 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,975 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:31,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:10:31,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,251 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2021-06-06 00:10:32,252 INFO L628 ElimStorePlain]: treesize reduction 69, result has 84.4 percent of original size [2021-06-06 00:10:32,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,263 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:32,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:10:32,264 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,393 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:10:32,394 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,404 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:10:32,407 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,528 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:10:32,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,539 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:32,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:10:32,540 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,661 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:10:32,661 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,674 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:10:32,675 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,684 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:32,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:32,685 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:10:32,798 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,808 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:10:32,810 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:32,971 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-06-06 00:10:32,971 INFO L628 ElimStorePlain]: treesize reduction 20, result has 91.7 percent of original size [2021-06-06 00:10:32,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:32,980 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:32,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:10:32,983 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:33,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:33,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:33,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:33,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:10:33,061 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:33,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:33,135 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:10:33,135 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:152 [2021-06-06 00:10:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:33,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567647315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:33,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:33,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:10:33,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442054701] [2021-06-06 00:10:33,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:10:33,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:33,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:10:33,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:10:33,250 INFO L87 Difference]: Start difference. First operand 2036 states and 7009 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:34,549 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:10:34,719 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-06 00:10:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:35,080 INFO L93 Difference]: Finished difference Result 2932 states and 9765 transitions. [2021-06-06 00:10:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:10:35,080 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:35,084 INFO L225 Difference]: With dead ends: 2932 [2021-06-06 00:10:35,084 INFO L226 Difference]: Without dead ends: 2898 [2021-06-06 00:10:35,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1811.6ms TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:10:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2021-06-06 00:10:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2045. [2021-06-06 00:10:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 3.4486301369863015) internal successors, (7049), 2044 states have internal predecessors, (7049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 7049 transitions. [2021-06-06 00:10:35,111 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 7049 transitions. Word has length 26 [2021-06-06 00:10:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:35,111 INFO L482 AbstractCegarLoop]: Abstraction has 2045 states and 7049 transitions. [2021-06-06 00:10:35,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 7049 transitions. [2021-06-06 00:10:35,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:35,113 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:35,113 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:35,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2011,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:35,313 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:35,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1121995759, now seen corresponding path program 29 times [2021-06-06 00:10:35,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:35,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278333405] [2021-06-06 00:10:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:35,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:35,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278333405] [2021-06-06 00:10:35,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278333405] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:35,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38194825] [2021-06-06 00:10:35,602 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 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 [2021-06-06 00:10:35,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:10:35,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:35,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:35,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:35,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:10:36,003 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:36,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 23 [2021-06-06 00:10:36,014 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,282 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2021-06-06 00:10:36,283 INFO L628 ElimStorePlain]: treesize reduction 17, result has 95.4 percent of original size [2021-06-06 00:10:36,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:10:36,298 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,308 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:36,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:10:36,309 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,435 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:10:36,435 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,447 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:36,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:10:36,448 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,457 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:10:36,458 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,571 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:10:36,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,582 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:36,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:10:36,584 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,591 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:10:36,594 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,696 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:10:36,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:10:36,710 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,719 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:36,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:10:36,720 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:36,815 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:10:36,815 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:176 [2021-06-06 00:10:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:36,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38194825] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:36,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:36,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:10:36,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775044702] [2021-06-06 00:10:36,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:10:36,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:36,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:10:36,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:10:36,932 INFO L87 Difference]: Start difference. First operand 2045 states and 7049 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:38,167 INFO L93 Difference]: Finished difference Result 2657 states and 8964 transitions. [2021-06-06 00:10:38,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:10:38,167 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:38,170 INFO L225 Difference]: With dead ends: 2657 [2021-06-06 00:10:38,170 INFO L226 Difference]: Without dead ends: 2632 [2021-06-06 00:10:38,170 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1304.1ms TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:10:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-06-06 00:10:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2045. [2021-06-06 00:10:38,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 3.4486301369863015) internal successors, (7049), 2044 states have internal predecessors, (7049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 7049 transitions. [2021-06-06 00:10:38,194 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 7049 transitions. Word has length 26 [2021-06-06 00:10:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:38,194 INFO L482 AbstractCegarLoop]: Abstraction has 2045 states and 7049 transitions. [2021-06-06 00:10:38,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 7049 transitions. [2021-06-06 00:10:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:38,197 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:38,197 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:38,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2039,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:38,397 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:38,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:38,397 INFO L82 PathProgramCache]: Analyzing trace with hash 568891871, now seen corresponding path program 48 times [2021-06-06 00:10:38,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:38,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714865151] [2021-06-06 00:10:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:38,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:38,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714865151] [2021-06-06 00:10:38,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714865151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:38,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590322819] [2021-06-06 00:10:38,701 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 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 [2021-06-06 00:10:38,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:10:38,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:38,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:38,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:39,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-06 00:10:39,114 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-06 00:10:39,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-06 00:10:39,129 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-06 00:10:39,136 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-06 00:10:39,143 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-06 00:10:39,150 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-06 00:10:39,157 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:10:39,164 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:10:39,170 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-06 00:10:39,176 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:10:39,183 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-06 00:10:39,189 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-06 00:10:39,196 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:10:39,202 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:39,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:39,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:10:39,206 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:39,223 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:10:39,224 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:10:39,224 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:683, output treesize:15 [2021-06-06 00:10:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:39,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590322819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:39,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:39,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:10:39,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822697400] [2021-06-06 00:10:39,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:10:39,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:39,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:10:39,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:10:39,252 INFO L87 Difference]: Start difference. First operand 2045 states and 7049 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:40,445 INFO L93 Difference]: Finished difference Result 2543 states and 8526 transitions. [2021-06-06 00:10:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:10:40,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:40,448 INFO L225 Difference]: With dead ends: 2543 [2021-06-06 00:10:40,448 INFO L226 Difference]: Without dead ends: 2521 [2021-06-06 00:10:40,449 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1231.3ms TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:10:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2021-06-06 00:10:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2041. [2021-06-06 00:10:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2040 states have (on average 3.4475490196078433) internal successors, (7033), 2040 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 7033 transitions. [2021-06-06 00:10:40,482 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 7033 transitions. Word has length 26 [2021-06-06 00:10:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:40,482 INFO L482 AbstractCegarLoop]: Abstraction has 2041 states and 7033 transitions. [2021-06-06 00:10:40,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 7033 transitions. [2021-06-06 00:10:40,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:40,484 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:40,484 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:40,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2075,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:40,684 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:40,685 INFO L82 PathProgramCache]: Analyzing trace with hash 650290927, now seen corresponding path program 49 times [2021-06-06 00:10:40,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:40,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341516669] [2021-06-06 00:10:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:40,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:40,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341516669] [2021-06-06 00:10:40,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341516669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:40,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189246939] [2021-06-06 00:10:40,974 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 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 [2021-06-06 00:10:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:40,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:10:40,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:41,297 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_230, v_prenex_232], 5=[v_prenex_228, A]} [2021-06-06 00:10:41,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:41,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:41,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:10:41,305 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:41,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:10:41,310 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,387 INFO L628 ElimStorePlain]: treesize reduction 143, result has 43.7 percent of original size [2021-06-06 00:10:41,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-06 00:10:41,391 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:41,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:10:41,418 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,440 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:41,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:41,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:10:41,444 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:41,464 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:10:41,464 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:307, output treesize:27 [2021-06-06 00:10:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:41,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189246939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:41,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:41,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:10:41,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809319591] [2021-06-06 00:10:41,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:10:41,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:41,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:10:41,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:10:41,507 INFO L87 Difference]: Start difference. First operand 2041 states and 7033 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:43,410 INFO L93 Difference]: Finished difference Result 2757 states and 9218 transitions. [2021-06-06 00:10:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:10:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:43,413 INFO L225 Difference]: With dead ends: 2757 [2021-06-06 00:10:43,413 INFO L226 Difference]: Without dead ends: 2742 [2021-06-06 00:10:43,414 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1836.4ms TimeCoverageRelationStatistics Valid=496, Invalid=2054, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:10:43,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2021-06-06 00:10:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2041. [2021-06-06 00:10:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2040 states have (on average 3.4475490196078433) internal successors, (7033), 2040 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 7033 transitions. [2021-06-06 00:10:43,438 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 7033 transitions. Word has length 26 [2021-06-06 00:10:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:43,438 INFO L482 AbstractCegarLoop]: Abstraction has 2041 states and 7033 transitions. [2021-06-06 00:10:43,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 7033 transitions. [2021-06-06 00:10:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:43,440 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:43,440 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:43,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2165,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:43,640 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:43,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:43,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1306035039, now seen corresponding path program 50 times [2021-06-06 00:10:43,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:43,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564121107] [2021-06-06 00:10:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:43,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:43,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564121107] [2021-06-06 00:10:43,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564121107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:43,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812863853] [2021-06-06 00:10:43,825 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 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 [2021-06-06 00:10:43,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:10:43,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:43,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:10:43,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,051 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:10:44,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:10:44,055 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:44,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-06-06 00:10:44,081 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:44,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-06 00:10:44,106 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,128 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:44,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2021-06-06 00:10:44,133 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,147 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:44,147 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,167 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-06 00:10:44,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-06 00:10:44,168 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,193 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:10:44,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-06 00:10:44,194 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,208 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:44,208 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,221 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:10:44,222 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,235 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:44,235 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,248 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:10:44,249 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,261 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:10:44,262 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,275 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:44,276 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,294 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:10:44,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:10:44,296 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,314 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:10:44,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:10:44,316 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:44,323 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:10:44,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:10:44,324 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:44,383 INFO L628 ElimStorePlain]: treesize reduction 132, result has 34.3 percent of original size [2021-06-06 00:10:44,384 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:10:44,384 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:657, output treesize:69 [2021-06-06 00:10:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:44,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812863853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:44,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:44,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-06-06 00:10:44,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487884570] [2021-06-06 00:10:44,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:44,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:44,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:44,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:44,462 INFO L87 Difference]: Start difference. First operand 2041 states and 7033 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:47,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:47,493 INFO L93 Difference]: Finished difference Result 3704 states and 11942 transitions. [2021-06-06 00:10:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:10:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:10:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:47,497 INFO L225 Difference]: With dead ends: 3704 [2021-06-06 00:10:47,497 INFO L226 Difference]: Without dead ends: 3647 [2021-06-06 00:10:47,498 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 2675.8ms TimeCoverageRelationStatistics Valid=843, Invalid=3579, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:10:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-06-06 00:10:47,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 2063. [2021-06-06 00:10:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 2062 states have (on average 3.4393792434529584) internal successors, (7092), 2062 states have internal predecessors, (7092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 7092 transitions. [2021-06-06 00:10:47,527 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 7092 transitions. Word has length 26 [2021-06-06 00:10:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:47,527 INFO L482 AbstractCegarLoop]: Abstraction has 2063 states and 7092 transitions. [2021-06-06 00:10:47,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 7092 transitions. [2021-06-06 00:10:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:47,529 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:47,529 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:10:47,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2179,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:47,731 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:47,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2073850769, now seen corresponding path program 51 times [2021-06-06 00:10:47,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:47,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345843556] [2021-06-06 00:10:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:47,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:47,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345843556] [2021-06-06 00:10:47,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345843556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:47,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957912377] [2021-06-06 00:10:47,924 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 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 [2021-06-06 00:10:47,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:10:47,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:47,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:10:47,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:48,274 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-06 00:10:48,521 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:10:48,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-06 00:10:48,524 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:48,565 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:10:48,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 36 [2021-06-06 00:10:48,567 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:48,994 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2021-06-06 00:10:48,995 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:49,036 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:49,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 59 [2021-06-06 00:10:49,049 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:49,083 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:49,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 59 [2021-06-06 00:10:49,092 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:49,964 WARN L205 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 168 [2021-06-06 00:10:49,965 INFO L628 ElimStorePlain]: treesize reduction 114, result has 87.7 percent of original size [2021-06-06 00:10:50,014 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:10:50,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 48 [2021-06-06 00:10:50,021 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:50,051 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:50,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-06 00:10:50,063 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:50,455 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-06 00:10:50,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:50,510 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:10:50,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2021-06-06 00:10:50,517 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:50,559 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:10:50,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 48 [2021-06-06 00:10:50,566 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,345 WARN L205 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 151 [2021-06-06 00:10:51,346 INFO L628 ElimStorePlain]: treesize reduction 37, result has 95.3 percent of original size [2021-06-06 00:10:51,392 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:10:51,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 47 [2021-06-06 00:10:51,395 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,433 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:10:51,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-06 00:10:51,438 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,808 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-06 00:10:51,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,848 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:10:51,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-06 00:10:51,852 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,891 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:10:51,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 48 [2021-06-06 00:10:51,908 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:52,573 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 135 [2021-06-06 00:10:52,574 INFO L628 ElimStorePlain]: treesize reduction 45, result has 93.8 percent of original size [2021-06-06 00:10:52,619 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:10:52,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 47 [2021-06-06 00:10:52,622 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:52,662 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:10:52,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 51 [2021-06-06 00:10:52,667 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:53,322 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 130 [2021-06-06 00:10:53,322 INFO L628 ElimStorePlain]: treesize reduction 24, result has 96.5 percent of original size [2021-06-06 00:10:53,370 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:10:53,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-06 00:10:53,379 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:53,418 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:10:53,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-06 00:10:53,426 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:54,384 WARN L205 SmtUtils]: Spent 957.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 135 [2021-06-06 00:10:54,384 INFO L628 ElimStorePlain]: treesize reduction 50, result has 93.1 percent of original size [2021-06-06 00:10:54,436 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 15 xjuncts. [2021-06-06 00:10:54,436 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:833, output treesize:1677 [2021-06-06 00:10:54,873 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 51 [2021-06-06 00:10:55,092 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-06-06 00:10:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:10:55,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957912377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:55,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:55,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-06 00:10:55,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426046529] [2021-06-06 00:10:55,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:10:55,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:55,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:10:55,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:10:55,209 INFO L87 Difference]: Start difference. First operand 2063 states and 7092 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:56,268 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-06 00:10:56,903 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2021-06-06 00:10:57,156 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-06-06 00:10:57,518 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2021-06-06 00:10:57,898 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 49 [2021-06-06 00:10:58,066 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2021-06-06 00:10:58,633 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-06 00:10:59,315 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2021-06-06 00:10:59,498 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2021-06-06 00:10:59,744 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2021-06-06 00:11:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:00,217 INFO L93 Difference]: Finished difference Result 3467 states and 11274 transitions. [2021-06-06 00:11:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:11:00,217 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:00,221 INFO L225 Difference]: With dead ends: 3467 [2021-06-06 00:11:00,221 INFO L226 Difference]: Without dead ends: 3422 [2021-06-06 00:11:00,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1249 ImplicationChecksByTransitivity, 5266.2ms TimeCoverageRelationStatistics Valid=789, Invalid=3633, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:11:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2021-06-06 00:11:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 2089. [2021-06-06 00:11:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 3.4454022988505746) internal successors, (7194), 2088 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 7194 transitions. [2021-06-06 00:11:00,250 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 7194 transitions. Word has length 26 [2021-06-06 00:11:00,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:00,250 INFO L482 AbstractCegarLoop]: Abstraction has 2089 states and 7194 transitions. [2021-06-06 00:11:00,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 7194 transitions. [2021-06-06 00:11:00,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:00,253 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:00,253 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:00,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2213 [2021-06-06 00:11:00,453 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:00,453 INFO L82 PathProgramCache]: Analyzing trace with hash 436262311, now seen corresponding path program 52 times [2021-06-06 00:11:00,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:00,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407183630] [2021-06-06 00:11:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:00,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:00,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407183630] [2021-06-06 00:11:00,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407183630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:00,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163522097] [2021-06-06 00:11:00,698 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 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 [2021-06-06 00:11:00,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:00,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:00,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:00,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:01,133 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_258], 5=[v_prenex_254, v_prenex_256]} [2021-06-06 00:11:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:11:01,140 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:11:01,145 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,207 INFO L628 ElimStorePlain]: treesize reduction 130, result has 39.0 percent of original size [2021-06-06 00:11:01,207 INFO L518 ElimStorePlain]: Eliminatee v_prenex_258 vanished before elimination [2021-06-06 00:11:01,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:11:01,211 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,230 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:01,233 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,250 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:11:01,251 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:31 [2021-06-06 00:11:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:01,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163522097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:01,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:01,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:11:01,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960709536] [2021-06-06 00:11:01,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:01,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:01,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:01,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:01,284 INFO L87 Difference]: Start difference. First operand 2089 states and 7194 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:03,111 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-06-06 00:11:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:03,340 INFO L93 Difference]: Finished difference Result 2641 states and 8863 transitions. [2021-06-06 00:11:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:11:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:03,344 INFO L225 Difference]: With dead ends: 2641 [2021-06-06 00:11:03,344 INFO L226 Difference]: Without dead ends: 2626 [2021-06-06 00:11:03,344 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1929.2ms TimeCoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:11:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2021-06-06 00:11:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2087. [2021-06-06 00:11:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2086 states have (on average 3.4453499520613615) internal successors, (7187), 2086 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 7187 transitions. [2021-06-06 00:11:03,375 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 7187 transitions. Word has length 26 [2021-06-06 00:11:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:03,375 INFO L482 AbstractCegarLoop]: Abstraction has 2087 states and 7187 transitions. [2021-06-06 00:11:03,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 7187 transitions. [2021-06-06 00:11:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:03,378 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:03,378 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:03,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2340,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:03,578 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:03,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2135160291, now seen corresponding path program 53 times [2021-06-06 00:11:03,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:03,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080080858] [2021-06-06 00:11:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:03,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:03,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080080858] [2021-06-06 00:11:03,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080080858] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:03,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98829503] [2021-06-06 00:11:03,767 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 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 [2021-06-06 00:11:03,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:11:03,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:03,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:11:03,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:04,248 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-06-06 00:11:04,441 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:11:04,626 INFO L446 ElimStorePlain]: Different costs {5=[A, v_prenex_270, v_prenex_271, v_prenex_273, v_prenex_267, v_prenex_268], 6=[v_prenex_272, v_prenex_269]} [2021-06-06 00:11:04,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:04,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:04,657 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:11:04,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:11:04,658 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:04,685 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:11:04,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:11:04,688 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:05,314 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2021-06-06 00:11:05,314 INFO L628 ElimStorePlain]: treesize reduction 31, result has 96.1 percent of original size [2021-06-06 00:11:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,346 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:11:05,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-06 00:11:05,348 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:05,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,370 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:11:05,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:11:05,371 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:05,671 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-06-06 00:11:05,672 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:05,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:05,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-06-06 00:11:05,706 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:05,731 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:11:05,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-06 00:11:05,734 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,543 WARN L205 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 142 [2021-06-06 00:11:06,543 INFO L628 ElimStorePlain]: treesize reduction 46, result has 93.5 percent of original size [2021-06-06 00:11:06,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,570 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:11:06,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-06 00:11:06,572 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,595 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:11:06,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-06 00:11:06,597 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,863 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:11:06,863 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:06,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,897 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-06 00:11:06,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:11:06,900 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,922 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:11:06,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:11:06,925 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:07,163 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-06 00:11:07,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:07,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,191 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:11:07,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 33 [2021-06-06 00:11:07,192 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:07,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:11:07,218 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:07,641 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2021-06-06 00:11:07,642 INFO L628 ElimStorePlain]: treesize reduction 35, result has 93.7 percent of original size [2021-06-06 00:11:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,666 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-06 00:11:07,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-06 00:11:07,668 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:07,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:07,691 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-06 00:11:07,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-06 00:11:07,695 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:08,058 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-06-06 00:11:08,058 INFO L628 ElimStorePlain]: treesize reduction 41, result has 91.5 percent of original size [2021-06-06 00:11:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:08,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:08,082 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:08,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 45 [2021-06-06 00:11:08,087 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:08,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:08,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:08,105 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-06 00:11:08,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-06 00:11:08,107 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:08,267 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-06 00:11:08,268 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:08,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-06 00:11:08,280 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:829, output treesize:384 [2021-06-06 00:11:08,454 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 27 [2021-06-06 00:11:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:08,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98829503] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:08,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:08,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-06 00:11:08,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46959679] [2021-06-06 00:11:08,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:11:08,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:08,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:11:08,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:11:08,490 INFO L87 Difference]: Start difference. First operand 2087 states and 7187 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:14,568 WARN L205 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2021-06-06 00:11:15,819 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2021-06-06 00:11:16,435 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 170 [2021-06-06 00:11:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:16,952 INFO L93 Difference]: Finished difference Result 3018 states and 10044 transitions. [2021-06-06 00:11:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-06 00:11:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:16,956 INFO L225 Difference]: With dead ends: 3018 [2021-06-06 00:11:16,956 INFO L226 Difference]: Without dead ends: 2988 [2021-06-06 00:11:16,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 8663.7ms TimeCoverageRelationStatistics Valid=522, Invalid=2448, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 00:11:16,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2021-06-06 00:11:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2087. [2021-06-06 00:11:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2086 states have (on average 3.4453499520613615) internal successors, (7187), 2086 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 7187 transitions. [2021-06-06 00:11:16,983 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 7187 transitions. Word has length 26 [2021-06-06 00:11:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:16,983 INFO L482 AbstractCegarLoop]: Abstraction has 2087 states and 7187 transitions. [2021-06-06 00:11:16,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 7187 transitions. [2021-06-06 00:11:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:16,986 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:16,986 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:17,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2354 [2021-06-06 00:11:17,193 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:17,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:17,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1001444339, now seen corresponding path program 54 times [2021-06-06 00:11:17,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:17,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933266386] [2021-06-06 00:11:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:17,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:17,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933266386] [2021-06-06 00:11:17,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933266386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:17,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587191039] [2021-06-06 00:11:17,433 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 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 [2021-06-06 00:11:17,455 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:11:17,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:17,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:17,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,658 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:11:17,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:17,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:17,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-06-06 00:11:17,688 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:17,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-06 00:11:17,714 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,737 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:17,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2021-06-06 00:11:17,743 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,757 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:11:17,757 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,777 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-06 00:11:17,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-06 00:11:17,778 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,800 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:11:17,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-06 00:11:17,801 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,815 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:11:17,816 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,830 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:11:17,830 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,844 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:11:17,845 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,858 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:11:17,859 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,871 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:11:17,872 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,885 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:11:17,886 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,905 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:11:17,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:17,907 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,927 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:11:17,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:11:17,928 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:17,937 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:11:17,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:11:17,937 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:18,007 INFO L628 ElimStorePlain]: treesize reduction 126, result has 35.4 percent of original size [2021-06-06 00:11:18,008 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:11:18,008 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:657, output treesize:69 [2021-06-06 00:11:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:18,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587191039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:18,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:18,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:11:18,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678372156] [2021-06-06 00:11:18,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:18,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:18,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:18,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:18,093 INFO L87 Difference]: Start difference. First operand 2087 states and 7187 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:20,361 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-06-06 00:11:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:20,843 INFO L93 Difference]: Finished difference Result 3534 states and 11458 transitions. [2021-06-06 00:11:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:11:20,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:20,848 INFO L225 Difference]: With dead ends: 3534 [2021-06-06 00:11:20,848 INFO L226 Difference]: Without dead ends: 3500 [2021-06-06 00:11:20,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 2564.7ms TimeCoverageRelationStatistics Valid=658, Invalid=2534, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:11:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-06-06 00:11:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 2096. [2021-06-06 00:11:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 3.4520286396181383) internal successors, (7232), 2095 states have internal predecessors, (7232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:20,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7232 transitions. [2021-06-06 00:11:20,878 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7232 transitions. Word has length 26 [2021-06-06 00:11:20,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:20,878 INFO L482 AbstractCegarLoop]: Abstraction has 2096 states and 7232 transitions. [2021-06-06 00:11:20,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7232 transitions. [2021-06-06 00:11:20,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:20,880 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:20,880 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:21,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2423 [2021-06-06 00:11:21,082 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash -505799277, now seen corresponding path program 30 times [2021-06-06 00:11:21,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:21,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926471304] [2021-06-06 00:11:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:21,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:21,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926471304] [2021-06-06 00:11:21,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926471304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:21,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602461172] [2021-06-06 00:11:21,225 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 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 [2021-06-06 00:11:21,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:11:21,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:21,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:21,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:21,594 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:21,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:21,595 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,614 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:21,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:11:21,615 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,631 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:21,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:11:21,632 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,640 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:21,640 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,653 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:21,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:11:21,657 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,665 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:21,666 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,682 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:21,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:11:21,685 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,693 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:21,694 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,705 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-06-06 00:11:21,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 19 [2021-06-06 00:11:21,706 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,713 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:21,714 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,722 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:21,722 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,736 INFO L354 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-06-06 00:11:21,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 23 [2021-06-06 00:11:21,737 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,745 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:21,745 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,752 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:21,753 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,760 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:21,761 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,767 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:21,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:11:21,767 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:21,943 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2021-06-06 00:11:21,944 INFO L628 ElimStorePlain]: treesize reduction 43, result has 79.1 percent of original size [2021-06-06 00:11:21,946 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:11:21,946 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:729, output treesize:157 [2021-06-06 00:11:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:22,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602461172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:22,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:22,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-06-06 00:11:22,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595341115] [2021-06-06 00:11:22,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:11:22,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:22,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:11:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:11:22,072 INFO L87 Difference]: Start difference. First operand 2096 states and 7232 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:23,427 INFO L93 Difference]: Finished difference Result 2796 states and 9280 transitions. [2021-06-06 00:11:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:11:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:23,430 INFO L225 Difference]: With dead ends: 2796 [2021-06-06 00:11:23,430 INFO L226 Difference]: Without dead ends: 2751 [2021-06-06 00:11:23,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1351.3ms TimeCoverageRelationStatistics Valid=241, Invalid=1481, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:11:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-06-06 00:11:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2123. [2021-06-06 00:11:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 3.4542884071630535) internal successors, (7330), 2122 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 7330 transitions. [2021-06-06 00:11:23,454 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 7330 transitions. Word has length 26 [2021-06-06 00:11:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:23,454 INFO L482 AbstractCegarLoop]: Abstraction has 2123 states and 7330 transitions. [2021-06-06 00:11:23,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 7330 transitions. [2021-06-06 00:11:23,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:23,457 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:23,457 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:23,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2458 [2021-06-06 00:11:23,672 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:23,672 INFO L82 PathProgramCache]: Analyzing trace with hash 266862281, now seen corresponding path program 31 times [2021-06-06 00:11:23,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:23,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718852871] [2021-06-06 00:11:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:23,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:23,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718852871] [2021-06-06 00:11:23,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718852871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:23,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108805670] [2021-06-06 00:11:23,932 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 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:11:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:23,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:11:23,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:24,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,186 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-06-06 00:11:24,189 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,199 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2021-06-06 00:11:24,200 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,211 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:24,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2021-06-06 00:11:24,213 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,235 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2021-06-06 00:11:24,238 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,246 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:11:24,246 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,255 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:11:24,256 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,266 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2021-06-06 00:11:24,266 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,275 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:11:24,276 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,285 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2021-06-06 00:11:24,285 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,293 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2021-06-06 00:11:24,294 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,302 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27 [2021-06-06 00:11:24,303 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,310 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:11:24,311 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,321 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:24,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2021-06-06 00:11:24,322 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,330 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 23 [2021-06-06 00:11:24,331 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,341 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:24,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 27 [2021-06-06 00:11:24,342 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,347 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 1 [2021-06-06 00:11:24,348 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,453 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-06-06 00:11:24,453 INFO L628 ElimStorePlain]: treesize reduction 47, result has 69.3 percent of original size [2021-06-06 00:11:24,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:11:24,454 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:821, output treesize:106 [2021-06-06 00:11:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:24,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108805670] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:24,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:24,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:24,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279711899] [2021-06-06 00:11:24,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:24,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:24,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:24,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:24,528 INFO L87 Difference]: Start difference. First operand 2123 states and 7330 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:25,677 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-06-06 00:11:26,046 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-06-06 00:11:26,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:26,191 INFO L93 Difference]: Finished difference Result 2903 states and 9622 transitions. [2021-06-06 00:11:26,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:11:26,191 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:26,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:26,195 INFO L225 Difference]: With dead ends: 2903 [2021-06-06 00:11:26,195 INFO L226 Difference]: Without dead ends: 2858 [2021-06-06 00:11:26,195 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1630.7ms TimeCoverageRelationStatistics Valid=238, Invalid=1322, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:11:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2021-06-06 00:11:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2119. [2021-06-06 00:11:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 2118 states have (on average 3.453257790368272) internal successors, (7314), 2118 states have internal predecessors, (7314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 7314 transitions. [2021-06-06 00:11:26,220 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 7314 transitions. Word has length 26 [2021-06-06 00:11:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:26,220 INFO L482 AbstractCegarLoop]: Abstraction has 2119 states and 7314 transitions. [2021-06-06 00:11:26,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 7314 transitions. [2021-06-06 00:11:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:26,222 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:26,222 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:26,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2506,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:26,423 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:26,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:26,423 INFO L82 PathProgramCache]: Analyzing trace with hash -176639705, now seen corresponding path program 32 times [2021-06-06 00:11:26,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:26,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530544991] [2021-06-06 00:11:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:26,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:26,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530544991] [2021-06-06 00:11:26,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530544991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:26,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281634949] [2021-06-06 00:11:26,571 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 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 [2021-06-06 00:11:26,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:26,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:26,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:27,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:27,014 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:11:27,019 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,091 INFO L628 ElimStorePlain]: treesize reduction 117, result has 42.9 percent of original size [2021-06-06 00:11:27,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:11:27,096 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,119 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:27,123 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:27,144 INFO L518 ElimStorePlain]: Eliminatee v_prenex_278 vanished before elimination [2021-06-06 00:11:27,146 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:11:27,146 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:265, output treesize:24 [2021-06-06 00:11:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:27,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281634949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:27,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:27,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:11:27,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129834968] [2021-06-06 00:11:27,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:11:27,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:27,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:11:27,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:11:27,173 INFO L87 Difference]: Start difference. First operand 2119 states and 7314 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:28,143 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-06 00:11:28,289 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-06-06 00:11:28,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:28,383 INFO L93 Difference]: Finished difference Result 2789 states and 9380 transitions. [2021-06-06 00:11:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:11:28,384 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:28,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:28,387 INFO L225 Difference]: With dead ends: 2789 [2021-06-06 00:11:28,387 INFO L226 Difference]: Without dead ends: 2774 [2021-06-06 00:11:28,387 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1209.5ms TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:11:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-06-06 00:11:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2117. [2021-06-06 00:11:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 2116 states have (on average 3.452741020793951) internal successors, (7306), 2116 states have internal predecessors, (7306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 7306 transitions. [2021-06-06 00:11:28,412 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 7306 transitions. Word has length 26 [2021-06-06 00:11:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:28,412 INFO L482 AbstractCegarLoop]: Abstraction has 2117 states and 7306 transitions. [2021-06-06 00:11:28,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 7306 transitions. [2021-06-06 00:11:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:28,415 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:28,415 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:28,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2525 [2021-06-06 00:11:28,621 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:28,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:28,621 INFO L82 PathProgramCache]: Analyzing trace with hash -344448797, now seen corresponding path program 33 times [2021-06-06 00:11:28,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:28,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157187629] [2021-06-06 00:11:28,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:28,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:28,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157187629] [2021-06-06 00:11:28,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157187629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:28,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138567982] [2021-06-06 00:11:28,766 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 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 [2021-06-06 00:11:28,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:11:28,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:28,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:11:28,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:29,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,074 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:29,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:29,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:11:29,087 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,094 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:29,095 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,102 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:29,103 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,110 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:29,111 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,120 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:29,123 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,131 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:29,131 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,141 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:29,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:29,143 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,150 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:29,151 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,161 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:29,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:11:29,162 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,172 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:29,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:11:29,173 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,184 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:29,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 20 [2021-06-06 00:11:29,185 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,192 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:29,192 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,200 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:29,201 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,208 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:11:29,209 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,213 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:29,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:29,214 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,286 INFO L628 ElimStorePlain]: treesize reduction 44, result has 67.9 percent of original size [2021-06-06 00:11:29,287 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:11:29,287 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:75 [2021-06-06 00:11:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:29,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138567982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:29,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:29,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:11:29,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892023887] [2021-06-06 00:11:29,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:29,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:29,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:29,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:29,357 INFO L87 Difference]: Start difference. First operand 2117 states and 7306 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:29,749 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-06-06 00:11:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:30,222 INFO L93 Difference]: Finished difference Result 2583 states and 8714 transitions. [2021-06-06 00:11:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:11:30,222 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:30,225 INFO L225 Difference]: With dead ends: 2583 [2021-06-06 00:11:30,225 INFO L226 Difference]: Without dead ends: 2568 [2021-06-06 00:11:30,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 897.5ms TimeCoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:11:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2021-06-06 00:11:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2111. [2021-06-06 00:11:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2110 states have (on average 3.4526066350710902) internal successors, (7285), 2110 states have internal predecessors, (7285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 7285 transitions. [2021-06-06 00:11:30,249 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 7285 transitions. Word has length 26 [2021-06-06 00:11:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:30,249 INFO L482 AbstractCegarLoop]: Abstraction has 2111 states and 7285 transitions. [2021-06-06 00:11:30,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 7285 transitions. [2021-06-06 00:11:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:30,252 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:30,252 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:30,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2545 [2021-06-06 00:11:30,467 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:30,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:30,468 INFO L82 PathProgramCache]: Analyzing trace with hash -129711505, now seen corresponding path program 34 times [2021-06-06 00:11:30,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:30,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567177460] [2021-06-06 00:11:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:30,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:30,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567177460] [2021-06-06 00:11:30,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567177460] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:30,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992991103] [2021-06-06 00:11:30,672 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 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 [2021-06-06 00:11:30,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:30,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:30,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:30,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:31,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:31,171 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:31,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:11:31,173 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:31,189 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:31,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:11:31,192 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:31,510 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2021-06-06 00:11:31,510 INFO L628 ElimStorePlain]: treesize reduction 29, result has 93.3 percent of original size [2021-06-06 00:11:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:31,532 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:31,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:11:31,535 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:31,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:31,554 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:31,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:11:31,555 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:31,705 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-06 00:11:31,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:31,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:31,722 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:31,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:11:31,728 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:31,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:31,744 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:31,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:11:31,745 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,033 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-06-06 00:11:32,033 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.5 percent of original size [2021-06-06 00:11:32,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:11:32,052 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,068 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:32,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:11:32,069 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,198 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:11:32,198 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:11:32,219 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,234 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:32,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:32,235 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,462 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-06 00:11:32,462 INFO L628 ElimStorePlain]: treesize reduction 16, result has 94.8 percent of original size [2021-06-06 00:11:32,477 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:11:32,477 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 11 variables, input treesize:457, output treesize:259 [2021-06-06 00:11:32,635 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-06-06 00:11:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:32,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992991103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:32,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:32,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:11:32,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367553350] [2021-06-06 00:11:32,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:11:32,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:32,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:11:32,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:11:32,667 INFO L87 Difference]: Start difference. First operand 2111 states and 7285 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:32,869 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2021-06-06 00:11:33,135 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-06 00:11:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:33,518 INFO L93 Difference]: Finished difference Result 2792 states and 9404 transitions. [2021-06-06 00:11:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:11:33,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:33,522 INFO L225 Difference]: With dead ends: 2792 [2021-06-06 00:11:33,522 INFO L226 Difference]: Without dead ends: 2767 [2021-06-06 00:11:33,522 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1163.4ms TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:11:33,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2021-06-06 00:11:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2092. [2021-06-06 00:11:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 3.4490674318507892) internal successors, (7212), 2091 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 7212 transitions. [2021-06-06 00:11:33,546 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 7212 transitions. Word has length 26 [2021-06-06 00:11:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:33,546 INFO L482 AbstractCegarLoop]: Abstraction has 2092 states and 7212 transitions. [2021-06-06 00:11:33,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 7212 transitions. [2021-06-06 00:11:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:33,548 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:33,548 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:33,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2592,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:33,748 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1072305685, now seen corresponding path program 35 times [2021-06-06 00:11:33,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:33,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716523704] [2021-06-06 00:11:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:33,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:33,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716523704] [2021-06-06 00:11:33,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716523704] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:33,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499152944] [2021-06-06 00:11:33,864 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 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 [2021-06-06 00:11:33,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:11:33,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:33,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:33,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:34,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:34,197 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:34,202 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:34,208 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:11:34,213 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:11:34,218 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:34,223 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:11:34,229 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:34,234 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:34,239 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:34,244 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:34,249 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:34,254 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:11:34,259 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:11:34,263 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:34,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:34,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:34,266 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:34,283 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:11:34,284 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:11:34,284 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-06 00:11:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:34,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499152944] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:34,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:34,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:34,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307357850] [2021-06-06 00:11:34,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:34,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:34,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:34,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:34,305 INFO L87 Difference]: Start difference. First operand 2092 states and 7212 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:35,003 INFO L93 Difference]: Finished difference Result 2658 states and 8951 transitions. [2021-06-06 00:11:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:11:35,004 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:35,007 INFO L225 Difference]: With dead ends: 2658 [2021-06-06 00:11:35,008 INFO L226 Difference]: Without dead ends: 2643 [2021-06-06 00:11:35,008 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 698.9ms TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:11:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2021-06-06 00:11:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2095. [2021-06-06 00:11:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2095 states, 2094 states have (on average 3.451289398280802) internal successors, (7227), 2094 states have internal predecessors, (7227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2095 states to 2095 states and 7227 transitions. [2021-06-06 00:11:35,041 INFO L78 Accepts]: Start accepts. Automaton has 2095 states and 7227 transitions. Word has length 26 [2021-06-06 00:11:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:35,041 INFO L482 AbstractCegarLoop]: Abstraction has 2095 states and 7227 transitions. [2021-06-06 00:11:35,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2095 states and 7227 transitions. [2021-06-06 00:11:35,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:35,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:35,043 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:35,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2665,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:35,243 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:35,244 INFO L82 PathProgramCache]: Analyzing trace with hash 987336491, now seen corresponding path program 36 times [2021-06-06 00:11:35,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:35,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4767530] [2021-06-06 00:11:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:35,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:35,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4767530] [2021-06-06 00:11:35,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4767530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:35,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005075997] [2021-06-06 00:11:35,388 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 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 [2021-06-06 00:11:35,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:11:35,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:35,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:35,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:35,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,576 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:35,576 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,583 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:35,584 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,593 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:35,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:35,594 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,603 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:35,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:35,604 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,612 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:35,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,622 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:35,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:35,623 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,630 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:35,631 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,641 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:35,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:11:35,642 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:35,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:11:35,653 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,661 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:11:35,662 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,668 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:35,669 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,676 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:35,677 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,683 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:35,684 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,691 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:35,691 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,698 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:35,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:35,699 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,705 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:35,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:11:35,708 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,763 INFO L628 ElimStorePlain]: treesize reduction 55, result has 55.6 percent of original size [2021-06-06 00:11:35,764 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:11:35,764 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:569, output treesize:69 [2021-06-06 00:11:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:35,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005075997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:35,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:35,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:35,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649871530] [2021-06-06 00:11:35,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:35,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:35,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:35,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:35,842 INFO L87 Difference]: Start difference. First operand 2095 states and 7227 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:36,717 INFO L93 Difference]: Finished difference Result 2926 states and 9825 transitions. [2021-06-06 00:11:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:11:36,717 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:36,721 INFO L225 Difference]: With dead ends: 2926 [2021-06-06 00:11:36,721 INFO L226 Difference]: Without dead ends: 2911 [2021-06-06 00:11:36,721 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 917.8ms TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:11:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-06-06 00:11:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2092. [2021-06-06 00:11:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 3.4490674318507892) internal successors, (7212), 2091 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 7212 transitions. [2021-06-06 00:11:36,747 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 7212 transitions. Word has length 26 [2021-06-06 00:11:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:36,747 INFO L482 AbstractCegarLoop]: Abstraction has 2092 states and 7212 transitions. [2021-06-06 00:11:36,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:36,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 7212 transitions. [2021-06-06 00:11:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:36,749 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:36,749 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:36,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2709,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:36,950 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:36,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:36,950 INFO L82 PathProgramCache]: Analyzing trace with hash -941341329, now seen corresponding path program 37 times [2021-06-06 00:11:36,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:36,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976478920] [2021-06-06 00:11:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:37,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:37,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976478920] [2021-06-06 00:11:37,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976478920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:37,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252558614] [2021-06-06 00:11:37,051 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 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 [2021-06-06 00:11:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:37,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:37,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:37,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:37,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:37,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:37,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:37,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:37,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:37,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:37,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-06 00:11:37,331 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:37,392 INFO L628 ElimStorePlain]: treesize reduction 108, result has 41.6 percent of original size [2021-06-06 00:11:37,392 INFO L518 ElimStorePlain]: Eliminatee v_prenex_291 vanished before elimination [2021-06-06 00:11:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:37,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:37,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:11:37,397 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:37,417 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:37,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:37,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:37,422 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:37,439 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:37,440 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:11:37,440 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:244, output treesize:31 [2021-06-06 00:11:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:37,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252558614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:37,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:37,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:37,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635541392] [2021-06-06 00:11:37,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:37,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:37,474 INFO L87 Difference]: Start difference. First operand 2092 states and 7212 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:37,919 INFO L93 Difference]: Finished difference Result 2732 states and 9177 transitions. [2021-06-06 00:11:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:11:37,919 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:37,922 INFO L225 Difference]: With dead ends: 2732 [2021-06-06 00:11:37,922 INFO L226 Difference]: Without dead ends: 2702 [2021-06-06 00:11:37,922 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 513.2ms TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:11:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2021-06-06 00:11:37,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2096. [2021-06-06 00:11:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 2095 states have (on average 3.452505966587112) internal successors, (7233), 2095 states have internal predecessors, (7233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 7233 transitions. [2021-06-06 00:11:37,946 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 7233 transitions. Word has length 26 [2021-06-06 00:11:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:37,946 INFO L482 AbstractCegarLoop]: Abstraction has 2096 states and 7233 transitions. [2021-06-06 00:11:37,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 7233 transitions. [2021-06-06 00:11:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:37,948 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:37,948 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:38,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2723 [2021-06-06 00:11:38,149 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1403214703, now seen corresponding path program 38 times [2021-06-06 00:11:38,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:38,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859910628] [2021-06-06 00:11:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:38,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:38,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859910628] [2021-06-06 00:11:38,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859910628] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:38,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345118702] [2021-06-06 00:11:38,266 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 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 [2021-06-06 00:11:38,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:38,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:38,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:38,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:38,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:38,697 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:38,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:38,699 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:38,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:38,717 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:38,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:38,718 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:38,838 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:11:38,838 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:38,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:38,856 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:38,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:11:38,858 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:38,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:38,870 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:38,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:11:38,875 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:38,984 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:11:38,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:38,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,004 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:39,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:11:39,007 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,024 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:39,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:11:39,026 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,131 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:11:39,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:39,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,150 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:39,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:39,151 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:39,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:11:39,167 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:39,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:11:39,280 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:241 [2021-06-06 00:11:39,442 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-06-06 00:11:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:39,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345118702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:39,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:39,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:11:39,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770322448] [2021-06-06 00:11:39,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:39,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:39,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:39,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:39,475 INFO L87 Difference]: Start difference. First operand 2096 states and 7233 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:39,819 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2021-06-06 00:11:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:40,130 INFO L93 Difference]: Finished difference Result 2726 states and 9219 transitions. [2021-06-06 00:11:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:11:40,130 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:40,133 INFO L225 Difference]: With dead ends: 2726 [2021-06-06 00:11:40,133 INFO L226 Difference]: Without dead ends: 2711 [2021-06-06 00:11:40,133 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 854.6ms TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:11:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2021-06-06 00:11:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2120. [2021-06-06 00:11:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2119 states have (on average 3.4502123643227938) internal successors, (7311), 2119 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 7311 transitions. [2021-06-06 00:11:40,160 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 7311 transitions. Word has length 26 [2021-06-06 00:11:40,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:40,160 INFO L482 AbstractCegarLoop]: Abstraction has 2120 states and 7311 transitions. [2021-06-06 00:11:40,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:40,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 7311 transitions. [2021-06-06 00:11:40,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:40,162 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:40,163 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:40,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2737,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:40,363 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2092411309, now seen corresponding path program 39 times [2021-06-06 00:11:40,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:40,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559796906] [2021-06-06 00:11:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:40,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559796906] [2021-06-06 00:11:40,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559796906] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316507260] [2021-06-06 00:11:40,606 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 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 [2021-06-06 00:11:40,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:11:40,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:40,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:11:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:40,958 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:11:41,165 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_312, v_prenex_313]} [2021-06-06 00:11:41,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:11:41,169 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,230 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-06 00:11:41,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:41,234 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:41,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:41,258 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:41,276 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:11:41,276 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-06 00:11:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:41,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316507260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:41,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:41,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:11:41,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085458264] [2021-06-06 00:11:41,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:11:41,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:11:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:11:41,319 INFO L87 Difference]: Start difference. First operand 2120 states and 7311 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:42,003 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:11:42,199 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2021-06-06 00:11:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:42,371 INFO L93 Difference]: Finished difference Result 2785 states and 9315 transitions. [2021-06-06 00:11:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:11:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:42,375 INFO L225 Difference]: With dead ends: 2785 [2021-06-06 00:11:42,375 INFO L226 Difference]: Without dead ends: 2740 [2021-06-06 00:11:42,375 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1243.8ms TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:11:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2021-06-06 00:11:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2156. [2021-06-06 00:11:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 3.451508120649652) internal successors, (7438), 2155 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 7438 transitions. [2021-06-06 00:11:42,399 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 7438 transitions. Word has length 26 [2021-06-06 00:11:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:42,399 INFO L482 AbstractCegarLoop]: Abstraction has 2156 states and 7438 transitions. [2021-06-06 00:11:42,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 7438 transitions. [2021-06-06 00:11:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:42,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:42,402 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:42,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2800 [2021-06-06 00:11:42,602 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash 585023207, now seen corresponding path program 40 times [2021-06-06 00:11:42,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:42,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252469052] [2021-06-06 00:11:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:42,847 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2021-06-06 00:11:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:42,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:42,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252469052] [2021-06-06 00:11:42,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252469052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:42,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367825105] [2021-06-06 00:11:42,902 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 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 [2021-06-06 00:11:42,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:42,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:11:42,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:43,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:43,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-06-06 00:11:43,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,113 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:43,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 31 [2021-06-06 00:11:43,114 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,125 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:43,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2021-06-06 00:11:43,126 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:43,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2021-06-06 00:11:43,140 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,149 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:11:43,149 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,158 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:11:43,159 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,169 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 1 [2021-06-06 00:11:43,170 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,178 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:11:43,179 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,189 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2021-06-06 00:11:43,189 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,197 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2021-06-06 00:11:43,198 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,206 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 27 [2021-06-06 00:11:43,207 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,215 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:11:43,215 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,226 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:43,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2021-06-06 00:11:43,228 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,236 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 23 [2021-06-06 00:11:43,237 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,247 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:43,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 27 [2021-06-06 00:11:43,248 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:43,254 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:43,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 1 [2021-06-06 00:11:43,254 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:43,360 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-06-06 00:11:43,360 INFO L628 ElimStorePlain]: treesize reduction 47, result has 69.3 percent of original size [2021-06-06 00:11:43,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:11:43,361 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:821, output treesize:106 [2021-06-06 00:11:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:43,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367825105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:43,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:43,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:43,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987728000] [2021-06-06 00:11:43,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:43,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:43,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:43,443 INFO L87 Difference]: Start difference. First operand 2156 states and 7438 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:44,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:44,351 INFO L93 Difference]: Finished difference Result 2977 states and 9961 transitions. [2021-06-06 00:11:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:11:44,352 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:44,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:44,355 INFO L225 Difference]: With dead ends: 2977 [2021-06-06 00:11:44,355 INFO L226 Difference]: Without dead ends: 2947 [2021-06-06 00:11:44,356 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1034.5ms TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:11:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-06-06 00:11:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2143. [2021-06-06 00:11:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 2142 states have (on average 3.4495798319327733) internal successors, (7389), 2142 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 7389 transitions. [2021-06-06 00:11:44,381 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 7389 transitions. Word has length 26 [2021-06-06 00:11:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:44,381 INFO L482 AbstractCegarLoop]: Abstraction has 2143 states and 7389 transitions. [2021-06-06 00:11:44,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 7389 transitions. [2021-06-06 00:11:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:44,384 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:44,384 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:44,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2813,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:44,584 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:44,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1104919697, now seen corresponding path program 41 times [2021-06-06 00:11:44,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:44,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186911908] [2021-06-06 00:11:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:44,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:44,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186911908] [2021-06-06 00:11:44,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186911908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:44,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584906404] [2021-06-06 00:11:44,801 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 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 [2021-06-06 00:11:44,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:11:44,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:44,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:44,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:45,158 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-06 00:11:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,275 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:45,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:11:45,276 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,286 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:45,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:11:45,290 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,564 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2021-06-06 00:11:45,565 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.6 percent of original size [2021-06-06 00:11:45,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,577 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:45,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:45,578 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:45,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:45,590 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,843 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-06 00:11:45,844 INFO L628 ElimStorePlain]: treesize reduction 4, result has 98.8 percent of original size [2021-06-06 00:11:45,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:45,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:11:45,857 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,866 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:45,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:45,868 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,980 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-06 00:11:45,981 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:45,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:45,992 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:45,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:45,993 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:45,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:46,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:46,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:11:46,004 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:46,106 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-06 00:11:46,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:46,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:46,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:46,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:46,120 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:46,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:46,128 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:46,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:11:46,129 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:46,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:46,230 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:11:46,231 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:411, output treesize:176 [2021-06-06 00:11:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:46,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584906404] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:46,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:46,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:11:46,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621060568] [2021-06-06 00:11:46,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:11:46,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:46,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:11:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:11:46,343 INFO L87 Difference]: Start difference. First operand 2143 states and 7389 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:47,071 INFO L93 Difference]: Finished difference Result 2746 states and 9264 transitions. [2021-06-06 00:11:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:11:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:47,074 INFO L225 Difference]: With dead ends: 2746 [2021-06-06 00:11:47,074 INFO L226 Difference]: Without dead ends: 2721 [2021-06-06 00:11:47,074 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 912.3ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-06-06 00:11:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2021-06-06 00:11:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 2147. [2021-06-06 00:11:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.449673811742777) internal successors, (7403), 2146 states have internal predecessors, (7403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7403 transitions. [2021-06-06 00:11:47,099 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7403 transitions. Word has length 26 [2021-06-06 00:11:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:47,099 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7403 transitions. [2021-06-06 00:11:47,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7403 transitions. [2021-06-06 00:11:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:47,101 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:47,101 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:47,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2832,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:47,302 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:47,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:47,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1379621035, now seen corresponding path program 42 times [2021-06-06 00:11:47,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:47,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92346466] [2021-06-06 00:11:47,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:47,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:47,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92346466] [2021-06-06 00:11:47,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92346466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:47,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306159480] [2021-06-06 00:11:47,552 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 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 [2021-06-06 00:11:47,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:11:47,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:47,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:47,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,778 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:11:47,779 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,788 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:47,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:11:47,791 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,798 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:11:47,799 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,806 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:47,807 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,817 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:47,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-06-06 00:11:47,817 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,825 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:47,826 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,835 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:47,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:11:47,837 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,845 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:11:47,845 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,852 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:11:47,853 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,862 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:47,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:11:47,863 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:11:47,872 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,880 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:11:47,881 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,889 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:11:47,889 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,896 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:47,896 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:47,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:11:47,907 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:47,912 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:47,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:11:47,913 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:47,972 INFO L628 ElimStorePlain]: treesize reduction 15, result has 83.9 percent of original size [2021-06-06 00:11:47,973 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:11:47,973 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:78 [2021-06-06 00:11:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:48,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306159480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:48,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:48,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:48,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657672580] [2021-06-06 00:11:48,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:48,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:48,053 INFO L87 Difference]: Start difference. First operand 2147 states and 7403 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:48,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:48,703 INFO L93 Difference]: Finished difference Result 2702 states and 9149 transitions. [2021-06-06 00:11:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:11:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:48,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:48,706 INFO L225 Difference]: With dead ends: 2702 [2021-06-06 00:11:48,706 INFO L226 Difference]: Without dead ends: 2687 [2021-06-06 00:11:48,707 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 732.3ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:11:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-06-06 00:11:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2153. [2021-06-06 00:11:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 3.451208178438662) internal successors, (7427), 2152 states have internal predecessors, (7427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 7427 transitions. [2021-06-06 00:11:48,731 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 7427 transitions. Word has length 26 [2021-06-06 00:11:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:48,732 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 7427 transitions. [2021-06-06 00:11:48,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 7427 transitions. [2021-06-06 00:11:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:48,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:48,734 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:48,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2870 [2021-06-06 00:11:48,934 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:48,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:48,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1044929515, now seen corresponding path program 55 times [2021-06-06 00:11:48,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:48,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921140000] [2021-06-06 00:11:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:49,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:49,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921140000] [2021-06-06 00:11:49,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921140000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:49,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769731541] [2021-06-06 00:11:49,084 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 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 [2021-06-06 00:11:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:49,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:49,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:49,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:11:49,518 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:49,524 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:11:49,531 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:11:49,538 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:11:49,544 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:11:49,551 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:11:49,557 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:11:49,563 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:11:49,570 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:11:49,576 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:11:49,582 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:11:49,588 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:11:49,594 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:11:49,600 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:49,603 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,620 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:11:49,621 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:11:49,621 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:11:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:49,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769731541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:49,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:49,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:11:49,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104668029] [2021-06-06 00:11:49,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:49,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:49,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:49,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:49,640 INFO L87 Difference]: Start difference. First operand 2153 states and 7427 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:50,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:50,197 INFO L93 Difference]: Finished difference Result 2728 states and 8906 transitions. [2021-06-06 00:11:50,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:11:50,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:50,201 INFO L225 Difference]: With dead ends: 2728 [2021-06-06 00:11:50,201 INFO L226 Difference]: Without dead ends: 2691 [2021-06-06 00:11:50,201 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 542.7ms TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:11:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-06-06 00:11:50,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2175. [2021-06-06 00:11:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 2174 states have (on average 3.4498620055197793) internal successors, (7500), 2174 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 7500 transitions. [2021-06-06 00:11:50,227 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 7500 transitions. Word has length 26 [2021-06-06 00:11:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:50,227 INFO L482 AbstractCegarLoop]: Abstraction has 2175 states and 7500 transitions. [2021-06-06 00:11:50,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 7500 transitions. [2021-06-06 00:11:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:50,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:50,230 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:50,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2889,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:50,430 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:50,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:50,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2112804079, now seen corresponding path program 56 times [2021-06-06 00:11:50,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:50,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374571635] [2021-06-06 00:11:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:50,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:50,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374571635] [2021-06-06 00:11:50,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374571635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:50,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484632905] [2021-06-06 00:11:50,601 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 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 [2021-06-06 00:11:50,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:50,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:50,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:50,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:50,866 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_328, v_prenex_324], 5=[A, v_prenex_326]} [2021-06-06 00:11:50,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:50,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:50,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:50,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:50,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:11:50,873 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:50,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:50,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:50,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:50,878 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:50,944 INFO L628 ElimStorePlain]: treesize reduction 130, result has 40.1 percent of original size [2021-06-06 00:11:50,944 INFO L518 ElimStorePlain]: Eliminatee v_prenex_324 vanished before elimination [2021-06-06 00:11:50,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:50,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:11:50,948 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:50,968 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:50,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:50,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:50,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:50,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:11:50,972 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:50,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:50,990 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:11:50,990 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:31 [2021-06-06 00:11:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:51,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484632905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:51,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:51,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:11:51,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267397725] [2021-06-06 00:11:51,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:51,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:51,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:51,033 INFO L87 Difference]: Start difference. First operand 2175 states and 7500 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:51,886 INFO L93 Difference]: Finished difference Result 2675 states and 8982 transitions. [2021-06-06 00:11:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:11:51,886 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:51,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:51,889 INFO L225 Difference]: With dead ends: 2675 [2021-06-06 00:11:51,889 INFO L226 Difference]: Without dead ends: 2629 [2021-06-06 00:11:51,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 819.5ms TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:11:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-06-06 00:11:51,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2171. [2021-06-06 00:11:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2170 states have (on average 3.4442396313364054) internal successors, (7474), 2170 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 7474 transitions. [2021-06-06 00:11:51,912 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 7474 transitions. Word has length 26 [2021-06-06 00:11:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:51,913 INFO L482 AbstractCegarLoop]: Abstraction has 2171 states and 7474 transitions. [2021-06-06 00:11:51,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 7474 transitions. [2021-06-06 00:11:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:51,915 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:51,915 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:52,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2991,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:52,115 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:52,116 INFO L82 PathProgramCache]: Analyzing trace with hash 455537647, now seen corresponding path program 57 times [2021-06-06 00:11:52,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:52,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222569214] [2021-06-06 00:11:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:52,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:52,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222569214] [2021-06-06 00:11:52,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222569214] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:52,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92440208] [2021-06-06 00:11:52,359 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 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:11:52,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:11:52,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:52,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:52,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:52,721 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_333, v_prenex_335], 5=[A, v_prenex_334]} [2021-06-06 00:11:52,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:52,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:52,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:11:52,728 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:52,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:52,733 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:52,822 INFO L628 ElimStorePlain]: treesize reduction 143, result has 42.8 percent of original size [2021-06-06 00:11:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-06 00:11:52,827 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:52,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:52,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:52,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:11:52,859 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:52,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:52,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:52,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:52,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-06 00:11:52,886 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:52,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:52,907 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:11:52,907 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:303, output treesize:24 [2021-06-06 00:11:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:52,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92440208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:52,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:52,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:11:52,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597395525] [2021-06-06 00:11:52,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:52,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:52,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:52,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:52,941 INFO L87 Difference]: Start difference. First operand 2171 states and 7474 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:53,535 INFO L93 Difference]: Finished difference Result 2624 states and 8866 transitions. [2021-06-06 00:11:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:11:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:53,538 INFO L225 Difference]: With dead ends: 2624 [2021-06-06 00:11:53,538 INFO L226 Difference]: Without dead ends: 2609 [2021-06-06 00:11:53,538 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 769.7ms TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:11:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2021-06-06 00:11:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 2181. [2021-06-06 00:11:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 3.445412844036697) internal successors, (7511), 2180 states have internal predecessors, (7511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 7511 transitions. [2021-06-06 00:11:53,562 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 7511 transitions. Word has length 26 [2021-06-06 00:11:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:53,562 INFO L482 AbstractCegarLoop]: Abstraction has 2181 states and 7511 transitions. [2021-06-06 00:11:53,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 7511 transitions. [2021-06-06 00:11:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:53,564 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:53,564 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:53,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3005 [2021-06-06 00:11:53,765 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:53,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1197737873, now seen corresponding path program 43 times [2021-06-06 00:11:53,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:53,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391431705] [2021-06-06 00:11:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:54,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:54,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391431705] [2021-06-06 00:11:54,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391431705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:54,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473538417] [2021-06-06 00:11:54,028 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 [2021-06-06 00:11:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:54,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:54,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:54,354 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_338], 2=[A, v_prenex_336]} [2021-06-06 00:11:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:11:54,358 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,451 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-06 00:11:54,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:54,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:54,455 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:54,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:54,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:54,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:54,494 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:11:54,498 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,536 INFO L628 ElimStorePlain]: treesize reduction 15, result has 76.9 percent of original size [2021-06-06 00:11:54,538 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:11:54,538 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:25 [2021-06-06 00:11:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:54,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473538417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:54,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:54,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:11:54,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600260632] [2021-06-06 00:11:54,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:54,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:54,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:54,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:54,571 INFO L87 Difference]: Start difference. First operand 2181 states and 7511 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:55,193 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-06 00:11:55,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:55,470 INFO L93 Difference]: Finished difference Result 2827 states and 9420 transitions. [2021-06-06 00:11:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:11:55,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:55,473 INFO L225 Difference]: With dead ends: 2827 [2021-06-06 00:11:55,473 INFO L226 Difference]: Without dead ends: 2797 [2021-06-06 00:11:55,474 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1059.2ms TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:11:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2021-06-06 00:11:55,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2189. [2021-06-06 00:11:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 3.4437842778793417) internal successors, (7535), 2188 states have internal predecessors, (7535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 7535 transitions. [2021-06-06 00:11:55,498 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 7535 transitions. Word has length 26 [2021-06-06 00:11:55,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:55,498 INFO L482 AbstractCegarLoop]: Abstraction has 2189 states and 7535 transitions. [2021-06-06 00:11:55,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 7535 transitions. [2021-06-06 00:11:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:55,501 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:55,501 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:55,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3020 [2021-06-06 00:11:55,705 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 352643691, now seen corresponding path program 58 times [2021-06-06 00:11:55,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:55,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525095916] [2021-06-06 00:11:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:55,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:55,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525095916] [2021-06-06 00:11:55,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525095916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:55,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660717324] [2021-06-06 00:11:55,842 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 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 [2021-06-06 00:11:55,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:55,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:55,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:11:55,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:56,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:11:56,277 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:11:56,283 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:11:56,291 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:11:56,298 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:11:56,304 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:11:56,310 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:56,317 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:11:56,323 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:11:56,330 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:11:56,336 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:11:56,343 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:11:56,350 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:11:56,356 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:11:56,362 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:56,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:56,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:11:56,365 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:56,382 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:11:56,382 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:11:56,383 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:11:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:56,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660717324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:56,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:56,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 00:11:56,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629569637] [2021-06-06 00:11:56,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:56,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:56,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:56,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:56,402 INFO L87 Difference]: Start difference. First operand 2189 states and 7535 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:57,396 INFO L93 Difference]: Finished difference Result 3223 states and 10393 transitions. [2021-06-06 00:11:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:11:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:11:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:57,400 INFO L225 Difference]: With dead ends: 3223 [2021-06-06 00:11:57,400 INFO L226 Difference]: Without dead ends: 3186 [2021-06-06 00:11:57,400 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 911.1ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:11:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2021-06-06 00:11:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2237. [2021-06-06 00:11:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2237 states, 2236 states have (on average 3.4485688729874777) internal successors, (7711), 2236 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2237 states to 2237 states and 7711 transitions. [2021-06-06 00:11:57,437 INFO L78 Accepts]: Start accepts. Automaton has 2237 states and 7711 transitions. Word has length 26 [2021-06-06 00:11:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:57,437 INFO L482 AbstractCegarLoop]: Abstraction has 2237 states and 7711 transitions. [2021-06-06 00:11:57,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2237 states and 7711 transitions. [2021-06-06 00:11:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:57,440 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:57,440 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:11:57,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3031 [2021-06-06 00:11:57,644 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash 392132503, now seen corresponding path program 44 times [2021-06-06 00:11:57,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:57,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282193418] [2021-06-06 00:11:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:11:57,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:57,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282193418] [2021-06-06 00:11:57,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282193418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:57,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754522467] [2021-06-06 00:11:57,894 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 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 [2021-06-06 00:11:57,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:57,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:57,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:57,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:58,302 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-06 00:11:58,776 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:58,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:11:58,777 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:58,788 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:58,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:58,789 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,111 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2021-06-06 00:11:59,112 INFO L628 ElimStorePlain]: treesize reduction 74, result has 84.5 percent of original size [2021-06-06 00:11:59,127 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:11:59,131 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,269 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:11:59,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:11:59,291 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,302 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:11:59,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:11:59,302 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,425 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:11:59,425 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,444 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:59,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:11:59,448 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,565 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 00:11:59,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,588 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:59,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:59,592 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,607 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:11:59,609 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,811 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2021-06-06 00:11:59,812 INFO L628 ElimStorePlain]: treesize reduction 27, result has 91.1 percent of original size [2021-06-06 00:11:59,830 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:59,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:11:59,831 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,931 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:59,948 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:59,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:11:59,951 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:00,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:00,060 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:00,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:00,062 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:00,154 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:00,167 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:12:00,167 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:539, output treesize:412 [2021-06-06 00:12:00,327 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-06-06 00:12:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:00,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754522467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:00,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:00,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:12:00,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334457963] [2021-06-06 00:12:00,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:12:00,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:12:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:12:00,421 INFO L87 Difference]: Start difference. First operand 2237 states and 7711 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:01,409 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-06-06 00:12:01,931 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2021-06-06 00:12:02,320 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2021-06-06 00:12:02,695 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 96 [2021-06-06 00:12:02,917 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:12:03,465 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 107 [2021-06-06 00:12:03,926 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-06-06 00:12:04,603 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 108 [2021-06-06 00:12:04,797 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-06 00:12:05,358 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2021-06-06 00:12:05,535 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-06-06 00:12:05,866 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-06-06 00:12:06,268 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-06-06 00:12:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:06,467 INFO L93 Difference]: Finished difference Result 3399 states and 11009 transitions. [2021-06-06 00:12:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:12:06,468 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:06,472 INFO L225 Difference]: With dead ends: 3399 [2021-06-06 00:12:06,472 INFO L226 Difference]: Without dead ends: 3354 [2021-06-06 00:12:06,472 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 5799.5ms TimeCoverageRelationStatistics Valid=484, Invalid=2378, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:12:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2021-06-06 00:12:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 2260. [2021-06-06 00:12:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 2259 states have (on average 3.454183266932271) internal successors, (7803), 2259 states have internal predecessors, (7803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 7803 transitions. [2021-06-06 00:12:06,499 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 7803 transitions. Word has length 26 [2021-06-06 00:12:06,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:06,499 INFO L482 AbstractCegarLoop]: Abstraction has 2260 states and 7803 transitions. [2021-06-06 00:12:06,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:06,499 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 7803 transitions. [2021-06-06 00:12:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:06,502 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:06,502 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:06,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3121 [2021-06-06 00:12:06,702 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash -658448197, now seen corresponding path program 45 times [2021-06-06 00:12:06,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:06,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571065925] [2021-06-06 00:12:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:06,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:06,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571065925] [2021-06-06 00:12:06,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571065925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:06,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954818000] [2021-06-06 00:12:06,934 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 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 [2021-06-06 00:12:06,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:12:06,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:06,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:07,177 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-06 00:12:07,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:07,458 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:12:07,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:12:07,459 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:07,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:07,484 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:07,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-06 00:12:07,485 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:07,839 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 156 [2021-06-06 00:12:07,839 INFO L628 ElimStorePlain]: treesize reduction 74, result has 85.2 percent of original size [2021-06-06 00:12:07,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:07,860 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:07,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:07,861 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,014 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-06 00:12:08,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,035 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:12:08,039 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,058 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:12:08,061 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,333 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 144 [2021-06-06 00:12:08,333 INFO L628 ElimStorePlain]: treesize reduction 49, result has 87.8 percent of original size [2021-06-06 00:12:08,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,356 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:08,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:08,357 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,378 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:08,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:12:08,390 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,609 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 138 [2021-06-06 00:12:08,609 INFO L628 ElimStorePlain]: treesize reduction 33, result has 90.0 percent of original size [2021-06-06 00:12:08,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,627 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:08,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:12:08,629 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,730 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:12:08,730 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,749 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:08,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-06 00:12:08,752 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,850 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,864 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:12:08,867 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,958 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:08,974 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:12:08,979 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:09,152 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112 [2021-06-06 00:12:09,152 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.4 percent of original size [2021-06-06 00:12:09,168 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:12:09,168 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 24 variables, input treesize:563, output treesize:231 [2021-06-06 00:12:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:09,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954818000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:09,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:09,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:12:09,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830170806] [2021-06-06 00:12:09,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:09,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:09,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:09,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:09,306 INFO L87 Difference]: Start difference. First operand 2260 states and 7803 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:09,591 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-06-06 00:12:10,359 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 36 [2021-06-06 00:12:10,827 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2021-06-06 00:12:11,139 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-06 00:12:11,462 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2021-06-06 00:12:11,807 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 112 [2021-06-06 00:12:12,161 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-06-06 00:12:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:12,394 INFO L93 Difference]: Finished difference Result 3654 states and 11998 transitions. [2021-06-06 00:12:12,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:12:12,394 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:12,399 INFO L225 Difference]: With dead ends: 3654 [2021-06-06 00:12:12,399 INFO L226 Difference]: Without dead ends: 3624 [2021-06-06 00:12:12,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 3229.0ms TimeCoverageRelationStatistics Valid=385, Invalid=1255, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:12:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-06-06 00:12:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 2265. [2021-06-06 00:12:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 2264 states have (on average 3.4487632508833923) internal successors, (7808), 2264 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 7808 transitions. [2021-06-06 00:12:12,429 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 7808 transitions. Word has length 26 [2021-06-06 00:12:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:12,429 INFO L482 AbstractCegarLoop]: Abstraction has 2265 states and 7808 transitions. [2021-06-06 00:12:12,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 7808 transitions. [2021-06-06 00:12:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:12,432 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:12,432 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:12,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3202,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:12,632 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash 578637215, now seen corresponding path program 59 times [2021-06-06 00:12:12,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:12,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107944567] [2021-06-06 00:12:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:12,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:12,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107944567] [2021-06-06 00:12:12,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107944567] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:12,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378106882] [2021-06-06 00:12:12,775 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 [2021-06-06 00:12:12,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:12:12,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:12,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:12,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:13,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:12:13,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:12:13,258 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:13,264 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:12:13,270 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:12:13,277 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:13,283 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:12:13,289 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:12:13,296 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:12:13,302 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:12:13,308 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:12:13,314 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:12:13,320 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:12:13,326 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:12:13,332 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:13,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:13,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:12:13,335 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:13,353 INFO L628 ElimStorePlain]: treesize reduction 28, result has 42.9 percent of original size [2021-06-06 00:12:13,353 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:12:13,353 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:12:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:13,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378106882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:13,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:13,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:12:13,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885328619] [2021-06-06 00:12:13,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:13,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:13,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:13,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:13,377 INFO L87 Difference]: Start difference. First operand 2265 states and 7808 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:14,324 INFO L93 Difference]: Finished difference Result 3677 states and 11972 transitions. [2021-06-06 00:12:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:12:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:14,329 INFO L225 Difference]: With dead ends: 3677 [2021-06-06 00:12:14,329 INFO L226 Difference]: Without dead ends: 3647 [2021-06-06 00:12:14,329 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 801.3ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:12:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-06-06 00:12:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 2319. [2021-06-06 00:12:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 3.4516824849007763) internal successors, (8001), 2318 states have internal predecessors, (8001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 8001 transitions. [2021-06-06 00:12:14,359 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 8001 transitions. Word has length 26 [2021-06-06 00:12:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:14,359 INFO L482 AbstractCegarLoop]: Abstraction has 2319 states and 8001 transitions. [2021-06-06 00:12:14,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 8001 transitions. [2021-06-06 00:12:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:14,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:14,362 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:14,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3245,105 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:14,562 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1882681429, now seen corresponding path program 60 times [2021-06-06 00:12:14,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:14,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710018671] [2021-06-06 00:12:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:14,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:14,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710018671] [2021-06-06 00:12:14,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710018671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:14,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626399827] [2021-06-06 00:12:14,678 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 [2021-06-06 00:12:14,709 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:12:14,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:14,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:14,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:14,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,895 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:12:14,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:12:14,898 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2021-06-06 00:12:14,924 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-06 00:12:14,950 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 45 [2021-06-06 00:12:14,977 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,991 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:14,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:14,992 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,012 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-06 00:12:15,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-06 00:12:15,013 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,035 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:12:15,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-06 00:12:15,036 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,050 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:15,050 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,063 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:12:15,064 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,077 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:15,078 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,091 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:15,091 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,104 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:12:15,104 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,118 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:12:15,118 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,138 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:12:15,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:15,140 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,159 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:12:15,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:12:15,160 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,167 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:15,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:12:15,168 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,229 INFO L628 ElimStorePlain]: treesize reduction 132, result has 34.3 percent of original size [2021-06-06 00:12:15,229 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:12:15,229 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:657, output treesize:69 [2021-06-06 00:12:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:15,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626399827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:15,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:15,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 00:12:15,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881852347] [2021-06-06 00:12:15,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:15,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:15,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:15,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:15,316 INFO L87 Difference]: Start difference. First operand 2319 states and 8001 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:16,877 INFO L93 Difference]: Finished difference Result 3983 states and 12879 transitions. [2021-06-06 00:12:16,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:12:16,878 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:16,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:16,882 INFO L225 Difference]: With dead ends: 3983 [2021-06-06 00:12:16,882 INFO L226 Difference]: Without dead ends: 3939 [2021-06-06 00:12:16,882 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1405.9ms TimeCoverageRelationStatistics Valid=466, Invalid=1696, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:12:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-06-06 00:12:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 2319. [2021-06-06 00:12:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 3.4490940465918896) internal successors, (7995), 2318 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 7995 transitions. [2021-06-06 00:12:16,915 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 7995 transitions. Word has length 26 [2021-06-06 00:12:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:16,915 INFO L482 AbstractCegarLoop]: Abstraction has 2319 states and 7995 transitions. [2021-06-06 00:12:16,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 7995 transitions. [2021-06-06 00:12:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:16,918 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:16,918 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:17,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3351 [2021-06-06 00:12:17,118 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash 534773347, now seen corresponding path program 46 times [2021-06-06 00:12:17,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:17,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292120468] [2021-06-06 00:12:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:17,333 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2021-06-06 00:12:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:17,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:17,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292120468] [2021-06-06 00:12:17,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292120468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:17,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059957792] [2021-06-06 00:12:17,445 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 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 [2021-06-06 00:12:17,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:12:17,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:17,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:12:17,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:17,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:17,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 27 [2021-06-06 00:12:17,678 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,690 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:17,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-06 00:12:17,692 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,705 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:17,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-06 00:12:17,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,718 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:17,718 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,729 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:12:17,730 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,743 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:17,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:12:17,744 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,756 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:17,757 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,767 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:12:17,768 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,780 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:12:17,781 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,792 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:17,792 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,805 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:17,805 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,816 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:12:17,818 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,830 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:17,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-06-06 00:12:17,834 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,844 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:12:17,845 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,855 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:12:17,856 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:17,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:17,862 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:17,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:17,863 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:17,936 INFO L628 ElimStorePlain]: treesize reduction 46, result has 65.7 percent of original size [2021-06-06 00:12:17,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:12:17,937 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:689, output treesize:88 [2021-06-06 00:12:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:18,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059957792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:18,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:18,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:12:18,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170716984] [2021-06-06 00:12:18,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:18,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:18,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:18,015 INFO L87 Difference]: Start difference. First operand 2319 states and 7995 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:19,679 INFO L93 Difference]: Finished difference Result 3035 states and 10159 transitions. [2021-06-06 00:12:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:12:19,679 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:19,683 INFO L225 Difference]: With dead ends: 3035 [2021-06-06 00:12:19,683 INFO L226 Difference]: Without dead ends: 3005 [2021-06-06 00:12:19,683 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1597.1ms TimeCoverageRelationStatistics Valid=293, Invalid=1513, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:12:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-06-06 00:12:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2314. [2021-06-06 00:12:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2313 states have (on average 3.4466061392131433) internal successors, (7972), 2313 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 7972 transitions. [2021-06-06 00:12:19,709 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 7972 transitions. Word has length 26 [2021-06-06 00:12:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:19,710 INFO L482 AbstractCegarLoop]: Abstraction has 2314 states and 7972 transitions. [2021-06-06 00:12:19,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 7972 transitions. [2021-06-06 00:12:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:19,712 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:19,712 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:19,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3385,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:19,913 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash 955312879, now seen corresponding path program 47 times [2021-06-06 00:12:19,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:19,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036109671] [2021-06-06 00:12:19,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:20,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:20,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036109671] [2021-06-06 00:12:20,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036109671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:20,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297212379] [2021-06-06 00:12:20,246 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 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 [2021-06-06 00:12:20,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:12:20,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:20,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:12:20,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:20,591 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-06 00:12:20,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:20,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:20,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:20,722 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:20,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:20,733 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:20,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:12:20,734 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,013 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2021-06-06 00:12:21,014 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.6 percent of original size [2021-06-06 00:12:21,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:21,028 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,038 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:21,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:12:21,039 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,164 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:12:21,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:21,180 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,189 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:21,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:12:21,190 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,301 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:12:21,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,312 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:21,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:12:21,314 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,322 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:12:21,325 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,435 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:21,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:12:21,437 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:21,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-06 00:12:21,446 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:21,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:21,541 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:12:21,541 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:411, output treesize:176 [2021-06-06 00:12:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:21,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297212379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:21,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:21,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:12:21,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831580961] [2021-06-06 00:12:21,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:21,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:21,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:21,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:21,660 INFO L87 Difference]: Start difference. First operand 2314 states and 7972 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:22,810 INFO L93 Difference]: Finished difference Result 3062 states and 10279 transitions. [2021-06-06 00:12:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:12:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:22,814 INFO L225 Difference]: With dead ends: 3062 [2021-06-06 00:12:22,814 INFO L226 Difference]: Without dead ends: 3037 [2021-06-06 00:12:22,814 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1335.5ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:12:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2021-06-06 00:12:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2304. [2021-06-06 00:12:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2303 states have (on average 3.449413808076422) internal successors, (7944), 2303 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:22,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 7944 transitions. [2021-06-06 00:12:22,840 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 7944 transitions. Word has length 26 [2021-06-06 00:12:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:22,841 INFO L482 AbstractCegarLoop]: Abstraction has 2304 states and 7944 transitions. [2021-06-06 00:12:22,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 7944 transitions. [2021-06-06 00:12:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:22,843 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:22,843 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:23,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3406 [2021-06-06 00:12:23,044 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:23,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:23,044 INFO L82 PathProgramCache]: Analyzing trace with hash -441885819, now seen corresponding path program 61 times [2021-06-06 00:12:23,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:23,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889469308] [2021-06-06 00:12:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:23,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889469308] [2021-06-06 00:12:23,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889469308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389893148] [2021-06-06 00:12:23,205 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 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 [2021-06-06 00:12:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:23,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:23,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:23,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:12:23,641 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:12:23,647 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:23,654 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:12:23,661 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-06 00:12:23,668 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:12:23,675 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:12:23,682 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:12:23,688 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:12:23,695 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:12:23,702 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:12:23,709 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:12:23,716 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:12:23,723 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:12:23,729 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:12:23,733 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,749 INFO L628 ElimStorePlain]: treesize reduction 15, result has 58.3 percent of original size [2021-06-06 00:12:23,750 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:12:23,750 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-06 00:12:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:23,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389893148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:23,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:23,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:12:23,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181522108] [2021-06-06 00:12:23,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:23,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:23,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:23,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:23,770 INFO L87 Difference]: Start difference. First operand 2304 states and 7944 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:25,008 INFO L93 Difference]: Finished difference Result 3206 states and 10682 transitions. [2021-06-06 00:12:25,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:12:25,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:25,012 INFO L225 Difference]: With dead ends: 3206 [2021-06-06 00:12:25,012 INFO L226 Difference]: Without dead ends: 3169 [2021-06-06 00:12:25,012 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1200.6ms TimeCoverageRelationStatistics Valid=459, Invalid=1703, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:12:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2021-06-06 00:12:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 2344. [2021-06-06 00:12:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 3.452838241570636) internal successors, (8090), 2343 states have internal predecessors, (8090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 8090 transitions. [2021-06-06 00:12:25,050 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 8090 transitions. Word has length 26 [2021-06-06 00:12:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:25,050 INFO L482 AbstractCegarLoop]: Abstraction has 2344 states and 8090 transitions. [2021-06-06 00:12:25,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 8090 transitions. [2021-06-06 00:12:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:25,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:25,053 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:25,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3442,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:25,253 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash 483608047, now seen corresponding path program 62 times [2021-06-06 00:12:25,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:25,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738835983] [2021-06-06 00:12:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:25,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:25,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738835983] [2021-06-06 00:12:25,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738835983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:25,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317185469] [2021-06-06 00:12:25,415 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 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 [2021-06-06 00:12:25,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:12:25,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:25,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:25,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:25,750 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_401, v_prenex_403], 5=[A, v_prenex_399]} [2021-06-06 00:12:25,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:25,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:12:25,756 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:25,828 INFO L628 ElimStorePlain]: treesize reduction 133, result has 44.6 percent of original size [2021-06-06 00:12:25,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:25,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:12:25,833 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:25,855 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:25,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:25,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:12:25,860 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:25,880 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:25,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:25,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:25,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:12:25,883 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:25,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:25,901 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:12:25,902 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:274, output treesize:31 [2021-06-06 00:12:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:25,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317185469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:25,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:25,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:12:25,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683384464] [2021-06-06 00:12:25,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:25,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:25,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:25,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:25,936 INFO L87 Difference]: Start difference. First operand 2344 states and 8090 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:27,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:27,578 INFO L93 Difference]: Finished difference Result 3360 states and 11166 transitions. [2021-06-06 00:12:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-06 00:12:27,578 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:27,582 INFO L225 Difference]: With dead ends: 3360 [2021-06-06 00:12:27,582 INFO L226 Difference]: Without dead ends: 3326 [2021-06-06 00:12:27,582 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1507.4ms TimeCoverageRelationStatistics Valid=528, Invalid=1922, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:12:27,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2021-06-06 00:12:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2364. [2021-06-06 00:12:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 3.446043165467626) internal successors, (8143), 2363 states have internal predecessors, (8143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 8143 transitions. [2021-06-06 00:12:27,611 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 8143 transitions. Word has length 26 [2021-06-06 00:12:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:27,612 INFO L482 AbstractCegarLoop]: Abstraction has 2364 states and 8143 transitions. [2021-06-06 00:12:27,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 8143 transitions. [2021-06-06 00:12:27,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:27,614 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:27,614 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:27,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3540 [2021-06-06 00:12:27,815 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 256075815, now seen corresponding path program 48 times [2021-06-06 00:12:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:27,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13725295] [2021-06-06 00:12:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:28,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:28,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13725295] [2021-06-06 00:12:28,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13725295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:28,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699137644] [2021-06-06 00:12:28,082 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 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 [2021-06-06 00:12:28,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:12:28,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:28,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:12:28,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:28,536 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:12:28,946 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_437, v_prenex_427, A, v_prenex_439, v_prenex_428, v_prenex_431, v_prenex_432, v_prenex_421, v_prenex_423, v_prenex_435], 3=[v_prenex_422, v_prenex_425]} [2021-06-06 00:12:28,971 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:28,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:12:28,975 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,293 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 147 [2021-06-06 00:12:29,294 INFO L628 ElimStorePlain]: treesize reduction 122, result has 76.9 percent of original size [2021-06-06 00:12:29,294 INFO L518 ElimStorePlain]: Eliminatee v_prenex_427 vanished before elimination [2021-06-06 00:12:29,316 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:29,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:12:29,319 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,453 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-06 00:12:29,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:29,471 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:29,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:12:29,473 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,607 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-06 00:12:29,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:29,627 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:29,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:29,628 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,760 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2021-06-06 00:12:29,760 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:29,760 INFO L518 ElimStorePlain]: Eliminatee v_prenex_431 vanished before elimination [2021-06-06 00:12:29,777 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:29,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:12:29,779 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,915 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-06 00:12:29,916 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:29,935 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:29,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:29,936 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,070 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-06 00:12:30,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,090 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:30,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:12:30,092 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,223 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-06 00:12:30,224 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,241 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:30,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:12:30,242 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,373 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-06 00:12:30,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,390 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2021-06-06 00:12:30,394 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,528 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:12:30,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,555 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:12:30,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2021-06-06 00:12:30,559 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,692 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 00:12:30,692 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,707 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 12 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:12:30,708 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 24 variables, input treesize:545, output treesize:490 [2021-06-06 00:12:30,900 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-06-06 00:12:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:31,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699137644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:31,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:31,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:12:31,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493036943] [2021-06-06 00:12:31,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:12:31,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:31,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:12:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:12:31,008 INFO L87 Difference]: Start difference. First operand 2364 states and 8143 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:31,566 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-06-06 00:12:32,418 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 57 [2021-06-06 00:12:32,731 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2021-06-06 00:12:33,029 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-06-06 00:12:33,258 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:12:33,486 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2021-06-06 00:12:33,703 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:12:34,274 WARN L205 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2021-06-06 00:12:34,510 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2021-06-06 00:12:35,247 WARN L205 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 96 [2021-06-06 00:12:35,729 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-06-06 00:12:35,945 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2021-06-06 00:12:36,262 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 34 [2021-06-06 00:12:36,412 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 30 [2021-06-06 00:12:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:36,601 INFO L93 Difference]: Finished difference Result 3432 states and 11237 transitions. [2021-06-06 00:12:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:12:36,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:36,606 INFO L225 Difference]: With dead ends: 3432 [2021-06-06 00:12:36,606 INFO L226 Difference]: Without dead ends: 3387 [2021-06-06 00:12:36,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 5476.3ms TimeCoverageRelationStatistics Valid=402, Invalid=2460, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:12:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-06-06 00:12:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2369. [2021-06-06 00:12:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 2368 states have (on average 3.4451013513513513) internal successors, (8158), 2368 states have internal predecessors, (8158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 8158 transitions. [2021-06-06 00:12:36,635 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 8158 transitions. Word has length 26 [2021-06-06 00:12:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:36,635 INFO L482 AbstractCegarLoop]: Abstraction has 2369 states and 8158 transitions. [2021-06-06 00:12:36,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 8158 transitions. [2021-06-06 00:12:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:36,637 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:36,637 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:36,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3554,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:36,838 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:36,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:36,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1128567001, now seen corresponding path program 49 times [2021-06-06 00:12:36,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:36,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731242054] [2021-06-06 00:12:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:37,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:37,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731242054] [2021-06-06 00:12:37,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731242054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:37,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096268067] [2021-06-06 00:12:37,084 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 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 [2021-06-06 00:12:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:37,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:37,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:37,502 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-06 00:12:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:37,708 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:12:37,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:12:37,709 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:37,732 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:37,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:12:37,735 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,086 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 152 [2021-06-06 00:12:38,086 INFO L628 ElimStorePlain]: treesize reduction 76, result has 84.7 percent of original size [2021-06-06 00:12:38,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,109 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:38,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-06 00:12:38,110 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,270 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2021-06-06 00:12:38,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:38,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,294 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:38,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:38,295 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,317 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:38,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:12:38,318 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,602 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 144 [2021-06-06 00:12:38,603 INFO L628 ElimStorePlain]: treesize reduction 33, result has 91.6 percent of original size [2021-06-06 00:12:38,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,624 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:38,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:12:38,628 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,645 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:38,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:12:38,648 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,870 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 136 [2021-06-06 00:12:38,870 INFO L628 ElimStorePlain]: treesize reduction 49, result has 85.8 percent of original size [2021-06-06 00:12:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,887 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:38,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:12:38,892 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,086 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 127 [2021-06-06 00:12:39,086 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.8 percent of original size [2021-06-06 00:12:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,104 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:39,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:39,105 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:39,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:39,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-06 00:12:39,217 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,304 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:39,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,321 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:39,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-06 00:12:39,323 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,406 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:39,422 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:12:39,422 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 24 variables, input treesize:563, output treesize:231 [2021-06-06 00:12:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:39,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096268067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:39,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:39,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:12:39,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374849920] [2021-06-06 00:12:39,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:39,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:39,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:39,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:39,567 INFO L87 Difference]: Start difference. First operand 2369 states and 8158 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:39,862 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-06 00:12:40,690 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:12:40,867 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-06 00:12:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:41,100 INFO L93 Difference]: Finished difference Result 3462 states and 11530 transitions. [2021-06-06 00:12:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:12:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:41,105 INFO L225 Difference]: With dead ends: 3462 [2021-06-06 00:12:41,105 INFO L226 Difference]: Without dead ends: 3432 [2021-06-06 00:12:41,105 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1803.8ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:12:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2021-06-06 00:12:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 2352. [2021-06-06 00:12:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 3.441514249255636) internal successors, (8091), 2351 states have internal predecessors, (8091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 8091 transitions. [2021-06-06 00:12:41,135 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 8091 transitions. Word has length 26 [2021-06-06 00:12:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:41,135 INFO L482 AbstractCegarLoop]: Abstraction has 2352 states and 8091 transitions. [2021-06-06 00:12:41,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 8091 transitions. [2021-06-06 00:12:41,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:41,138 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:41,138 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:41,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3592 [2021-06-06 00:12:41,338 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:41,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:41,338 INFO L82 PathProgramCache]: Analyzing trace with hash 676615347, now seen corresponding path program 50 times [2021-06-06 00:12:41,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:41,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441365533] [2021-06-06 00:12:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:41,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:41,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441365533] [2021-06-06 00:12:41,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441365533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:41,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5830769] [2021-06-06 00:12:41,597 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 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 [2021-06-06 00:12:41,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:12:41,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:41,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-06 00:12:41,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:41,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,787 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:12:41,787 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,796 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:41,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:41,800 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,807 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:12:41,808 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,815 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:12:41,815 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,825 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:41,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 23 [2021-06-06 00:12:41,826 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,833 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:12:41,834 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,844 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:41,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-06 00:12:41,845 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,853 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2021-06-06 00:12:41,854 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,861 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:12:41,861 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,871 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:41,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:12:41,872 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:12:41,880 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,889 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:12:41,889 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,897 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:12:41,898 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,905 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:12:41,906 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:41,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-06 00:12:41,917 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:41,922 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:12:41,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:12:41,922 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:41,982 INFO L628 ElimStorePlain]: treesize reduction 15, result has 83.9 percent of original size [2021-06-06 00:12:41,983 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:12:41,983 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:78 [2021-06-06 00:12:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:42,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5830769] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:42,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:42,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:12:42,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585999623] [2021-06-06 00:12:42,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:42,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:42,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:42,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:42,072 INFO L87 Difference]: Start difference. First operand 2352 states and 8091 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:42,922 INFO L93 Difference]: Finished difference Result 3124 states and 10478 transitions. [2021-06-06 00:12:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:12:42,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:42,926 INFO L225 Difference]: With dead ends: 3124 [2021-06-06 00:12:42,926 INFO L226 Difference]: Without dead ends: 3099 [2021-06-06 00:12:42,927 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 895.5ms TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:12:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2021-06-06 00:12:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2339. [2021-06-06 00:12:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 2338 states have (on average 3.441830624465355) internal successors, (8047), 2338 states have internal predecessors, (8047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 8047 transitions. [2021-06-06 00:12:42,956 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 8047 transitions. Word has length 26 [2021-06-06 00:12:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:42,956 INFO L482 AbstractCegarLoop]: Abstraction has 2339 states and 8047 transitions. [2021-06-06 00:12:42,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 8047 transitions. [2021-06-06 00:12:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:42,958 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:42,959 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:43,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3639 [2021-06-06 00:12:43,174 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:43,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1133811217, now seen corresponding path program 51 times [2021-06-06 00:12:43,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:43,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508113603] [2021-06-06 00:12:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:43,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:43,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508113603] [2021-06-06 00:12:43,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508113603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:43,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252979335] [2021-06-06 00:12:43,476 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 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 [2021-06-06 00:12:43,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:12:43,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:43,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:12:43,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:43,803 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2021-06-06 00:12:43,946 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_481, v_prenex_482, v_prenex_478], 3=[v_prenex_480]} [2021-06-06 00:12:43,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:43,959 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:43,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:12:43,961 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:43,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:43,970 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:43,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-06 00:12:43,971 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,279 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2021-06-06 00:12:44,280 INFO L628 ElimStorePlain]: treesize reduction 10, result has 97.4 percent of original size [2021-06-06 00:12:44,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,293 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:44,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-06 00:12:44,294 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,304 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:44,307 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,440 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-06 00:12:44,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,453 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:44,456 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,466 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:44,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:12:44,467 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,581 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:12:44,582 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:12:44,596 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,605 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:44,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 20 [2021-06-06 00:12:44,606 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,708 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:12:44,708 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,720 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:12:44,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-06 00:12:44,721 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:44,729 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-06 00:12:44,732 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:44,822 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:44,827 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:12:44,827 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:421, output treesize:186 [2021-06-06 00:12:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:44,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252979335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:44,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:44,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:12:44,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531320349] [2021-06-06 00:12:44,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:44,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:44,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:44,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:44,951 INFO L87 Difference]: Start difference. First operand 2339 states and 8047 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:45,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:45,607 INFO L93 Difference]: Finished difference Result 2991 states and 10107 transitions. [2021-06-06 00:12:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:12:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:45,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:45,611 INFO L225 Difference]: With dead ends: 2991 [2021-06-06 00:12:45,611 INFO L226 Difference]: Without dead ends: 2976 [2021-06-06 00:12:45,612 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1048.0ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:12:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-06-06 00:12:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2333. [2021-06-06 00:12:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2333 states, 2332 states have (on average 3.442967409948542) internal successors, (8029), 2332 states have internal predecessors, (8029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 8029 transitions. [2021-06-06 00:12:45,638 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 8029 transitions. Word has length 26 [2021-06-06 00:12:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:45,638 INFO L482 AbstractCegarLoop]: Abstraction has 2333 states and 8029 transitions. [2021-06-06 00:12:45,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 8029 transitions. [2021-06-06 00:12:45,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:45,641 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:45,641 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:45,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3658 [2021-06-06 00:12:45,841 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:45,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:45,841 INFO L82 PathProgramCache]: Analyzing trace with hash 118535907, now seen corresponding path program 63 times [2021-06-06 00:12:45,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:45,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112873974] [2021-06-06 00:12:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:45,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:45,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112873974] [2021-06-06 00:12:45,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112873974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:45,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214970774] [2021-06-06 00:12:45,983 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 [2021-06-06 00:12:46,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:12:46,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:46,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:12:46,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:46,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,447 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:46,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-06 00:12:46,449 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,473 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:46,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:12:46,477 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,491 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:12:46,491 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,505 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:12:46,506 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,526 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:12:46,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 25 [2021-06-06 00:12:46,527 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,547 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:12:46,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-06 00:12:46,549 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,562 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:12:46,563 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,577 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:12:46,577 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,597 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:12:46,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:12:46,599 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,619 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:12:46,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:12:46,620 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,641 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:12:46,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-06 00:12:46,642 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,661 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-06-06 00:12:46,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 23 [2021-06-06 00:12:46,663 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,676 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:12:46,676 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:46,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:12:46,701 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,714 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-06 00:12:46,714 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:46,721 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:46,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-06 00:12:46,722 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:46,799 INFO L628 ElimStorePlain]: treesize reduction 105, result has 47.0 percent of original size [2021-06-06 00:12:46,800 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:12:46,800 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-06 00:12:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:46,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214970774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:46,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:46,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:12:46,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567475514] [2021-06-06 00:12:46,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:12:46,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:46,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:12:46,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:12:46,867 INFO L87 Difference]: Start difference. First operand 2333 states and 8029 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:48,964 INFO L93 Difference]: Finished difference Result 3591 states and 11838 transitions. [2021-06-06 00:12:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:12:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:48,968 INFO L225 Difference]: With dead ends: 3591 [2021-06-06 00:12:48,968 INFO L226 Difference]: Without dead ends: 3547 [2021-06-06 00:12:48,969 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1838.0ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:12:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-06-06 00:12:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2360. [2021-06-06 00:12:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 3.4412886816447648) internal successors, (8118), 2359 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 8118 transitions. [2021-06-06 00:12:49,000 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 8118 transitions. Word has length 26 [2021-06-06 00:12:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:49,000 INFO L482 AbstractCegarLoop]: Abstraction has 2360 states and 8118 transitions. [2021-06-06 00:12:49,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 8118 transitions. [2021-06-06 00:12:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:49,003 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:49,003 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:49,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3695,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:49,203 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:49,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1466803217, now seen corresponding path program 64 times [2021-06-06 00:12:49,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:49,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983119977] [2021-06-06 00:12:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:49,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:49,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983119977] [2021-06-06 00:12:49,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983119977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:49,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63940853] [2021-06-06 00:12:49,446 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 [2021-06-06 00:12:49,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:12:49,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:49,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:12:49,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:49,807 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_486], 5=[v_prenex_487, v_prenex_488]} [2021-06-06 00:12:49,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:49,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:49,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:12:49,814 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:49,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:12:49,820 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:49,885 INFO L628 ElimStorePlain]: treesize reduction 130, result has 41.2 percent of original size [2021-06-06 00:12:49,885 INFO L518 ElimStorePlain]: Eliminatee v_prenex_486 vanished before elimination [2021-06-06 00:12:49,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:49,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-06 00:12:49,889 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:49,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:49,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:49,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:49,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-06 00:12:49,913 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:49,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:49,931 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-06 00:12:49,931 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:274, output treesize:24 [2021-06-06 00:12:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:49,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63940853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:49,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:49,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:12:49,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562893843] [2021-06-06 00:12:49,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:49,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:49,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:49,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:49,966 INFO L87 Difference]: Start difference. First operand 2360 states and 8118 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:51,111 INFO L93 Difference]: Finished difference Result 3132 states and 10494 transitions. [2021-06-06 00:12:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:12:51,111 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:12:51,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:51,115 INFO L225 Difference]: With dead ends: 3132 [2021-06-06 00:12:51,115 INFO L226 Difference]: Without dead ends: 3117 [2021-06-06 00:12:51,116 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1085.6ms TimeCoverageRelationStatistics Valid=253, Invalid=1153, Unknown=0, NotChecked=0, Total=1406 [2021-06-06 00:12:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2021-06-06 00:12:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2360. [2021-06-06 00:12:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 3.4412886816447648) internal successors, (8118), 2359 states have internal predecessors, (8118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 8118 transitions. [2021-06-06 00:12:51,143 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 8118 transitions. Word has length 26 [2021-06-06 00:12:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:51,143 INFO L482 AbstractCegarLoop]: Abstraction has 2360 states and 8118 transitions. [2021-06-06 00:12:51,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:51,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 8118 transitions. [2021-06-06 00:12:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:51,146 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:51,146 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:12:51,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3809 [2021-06-06 00:12:51,346 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:51,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:51,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1440707985, now seen corresponding path program 65 times [2021-06-06 00:12:51,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:51,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219677949] [2021-06-06 00:12:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:51,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:51,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219677949] [2021-06-06 00:12:51,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219677949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:51,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618718736] [2021-06-06 00:12:51,552 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 [2021-06-06 00:12:51,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:12:51,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:51,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:12:51,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:51,877 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-06 00:12:52,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,143 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:12:52,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-06 00:12:52,146 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,181 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-06 00:12:52,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:12:52,184 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:52,545 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-06 00:12:52,545 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:52,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,586 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:52,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-06 00:12:52,592 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,616 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:12:52,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-06 00:12:52,618 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:52,964 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-06-06 00:12:52,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:52,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:52,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:12:53,001 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:53,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,016 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:53,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:12:53,017 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:53,335 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-06-06 00:12:53,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:53,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,365 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:12:53,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-06 00:12:53,367 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,393 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:53,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-06 00:12:53,396 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:53,968 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 142 [2021-06-06 00:12:53,968 INFO L628 ElimStorePlain]: treesize reduction 31, result has 95.0 percent of original size [2021-06-06 00:12:53,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:53,994 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:12:53,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-06 00:12:53,996 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:54,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,020 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:54,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-06 00:12:54,022 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:54,277 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-06 00:12:54,278 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,304 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:12:54,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:12:54,306 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:54,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,328 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:54,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:12:54,332 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:54,768 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2021-06-06 00:12:54,769 INFO L628 ElimStorePlain]: treesize reduction 33, result has 93.4 percent of original size [2021-06-06 00:12:54,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,796 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:54,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-06-06 00:12:54,801 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:54,823 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:12:54,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-06 00:12:54,827 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:55,402 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2021-06-06 00:12:55,402 INFO L628 ElimStorePlain]: treesize reduction 40, result has 91.2 percent of original size [2021-06-06 00:12:55,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:55,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:55,426 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:12:55,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-06 00:12:55,428 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:55,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:55,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:55,449 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:55,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-06 00:12:55,451 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:55,628 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:12:55,628 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:55,642 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-06 00:12:55,642 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:801, output treesize:422 [2021-06-06 00:12:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:12:55,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618718736] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:55,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:55,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-06 00:12:55,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429585592] [2021-06-06 00:12:55,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:55,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:55,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:55,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:55,832 INFO L87 Difference]: Start difference. First operand 2360 states and 8118 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:58,597 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-06-06 00:12:58,770 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-06 00:13:02,194 WARN L205 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2021-06-06 00:13:02,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:02,654 INFO L93 Difference]: Finished difference Result 3258 states and 10844 transitions. [2021-06-06 00:13:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:13:02,654 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 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 26 [2021-06-06 00:13:02,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:02,658 INFO L225 Difference]: With dead ends: 3258 [2021-06-06 00:13:02,658 INFO L226 Difference]: Without dead ends: 3228 [2021-06-06 00:13:02,658 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 6752.4ms TimeCoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:13:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-06-06 00:13:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2352. [2021-06-06 00:13:02,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 3.442364951084645) internal successors, (8093), 2351 states have internal predecessors, (8093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 8093 transitions. [2021-06-06 00:13:02,685 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 8093 transitions. Word has length 26 [2021-06-06 00:13:02,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:02,685 INFO L482 AbstractCegarLoop]: Abstraction has 2352 states and 8093 transitions. [2021-06-06 00:13:02,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 8093 transitions. [2021-06-06 00:13:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:02,698 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:02,698 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:02,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3824,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:02,900 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:02,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1407294025, now seen corresponding path program 52 times [2021-06-06 00:13:02,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:02,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533429057] [2021-06-06 00:13:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:02,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:02,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533429057] [2021-06-06 00:13:02,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533429057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:02,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078770862] [2021-06-06 00:13:02,935 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 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 [2021-06-06 00:13:02,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:02,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:02,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:03,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078770862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:03,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:03,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:13:03,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037234100] [2021-06-06 00:13:03,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:03,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:03,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:03,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:03,038 INFO L87 Difference]: Start difference. First operand 2352 states and 8093 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:03,827 INFO L93 Difference]: Finished difference Result 5410 states and 16973 transitions. [2021-06-06 00:13:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:13:03,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:03,834 INFO L225 Difference]: With dead ends: 5410 [2021-06-06 00:13:03,834 INFO L226 Difference]: Without dead ends: 5410 [2021-06-06 00:13:03,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 461.7ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:13:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2021-06-06 00:13:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 2548. [2021-06-06 00:13:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2547 states have (on average 3.486062033765214) internal successors, (8879), 2547 states have internal predecessors, (8879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:03,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 8879 transitions. [2021-06-06 00:13:03,891 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 8879 transitions. Word has length 28 [2021-06-06 00:13:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:03,891 INFO L482 AbstractCegarLoop]: Abstraction has 2548 states and 8879 transitions. [2021-06-06 00:13:03,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 8879 transitions. [2021-06-06 00:13:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:03,894 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:03,894 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:04,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3895,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:04,095 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:04,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:04,095 INFO L82 PathProgramCache]: Analyzing trace with hash 430975181, now seen corresponding path program 53 times [2021-06-06 00:13:04,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:04,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123033649] [2021-06-06 00:13:04,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:04,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:04,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123033649] [2021-06-06 00:13:04,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123033649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:04,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972736388] [2021-06-06 00:13:04,137 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 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 [2021-06-06 00:13:04,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:13:04,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:04,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:04,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:04,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972736388] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:04,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:04,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:13:04,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141970232] [2021-06-06 00:13:04,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:04,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:04,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:04,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:04,263 INFO L87 Difference]: Start difference. First operand 2548 states and 8879 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:05,360 INFO L93 Difference]: Finished difference Result 7046 states and 21713 transitions. [2021-06-06 00:13:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:13:05,360 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:05,369 INFO L225 Difference]: With dead ends: 7046 [2021-06-06 00:13:05,369 INFO L226 Difference]: Without dead ends: 7046 [2021-06-06 00:13:05,369 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 643.3ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:13:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7046 states. [2021-06-06 00:13:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7046 to 2559. [2021-06-06 00:13:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2558 states have (on average 3.492181391712275) internal successors, (8933), 2558 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 8933 transitions. [2021-06-06 00:13:05,423 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 8933 transitions. Word has length 28 [2021-06-06 00:13:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:05,423 INFO L482 AbstractCegarLoop]: Abstraction has 2559 states and 8933 transitions. [2021-06-06 00:13:05,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 8933 transitions. [2021-06-06 00:13:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:05,426 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:05,426 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:05,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3896 [2021-06-06 00:13:05,627 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:05,627 INFO L82 PathProgramCache]: Analyzing trace with hash 997927261, now seen corresponding path program 54 times [2021-06-06 00:13:05,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:05,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761777928] [2021-06-06 00:13:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:05,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:05,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761777928] [2021-06-06 00:13:05,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761777928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:05,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588705696] [2021-06-06 00:13:05,663 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 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 [2021-06-06 00:13:05,685 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:13:05,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:05,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:05,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:05,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588705696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:05,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:05,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:13:05,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039622884] [2021-06-06 00:13:05,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:05,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:05,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:05,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:05,776 INFO L87 Difference]: Start difference. First operand 2559 states and 8933 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:06,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:06,784 INFO L93 Difference]: Finished difference Result 6437 states and 20239 transitions. [2021-06-06 00:13:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:13:06,784 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:06,792 INFO L225 Difference]: With dead ends: 6437 [2021-06-06 00:13:06,792 INFO L226 Difference]: Without dead ends: 6437 [2021-06-06 00:13:06,793 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 615.6ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-06 00:13:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6437 states. [2021-06-06 00:13:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6437 to 2507. [2021-06-06 00:13:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2506 states have (on average 3.4720670391061454) internal successors, (8701), 2506 states have internal predecessors, (8701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 8701 transitions. [2021-06-06 00:13:06,839 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 8701 transitions. Word has length 28 [2021-06-06 00:13:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:06,839 INFO L482 AbstractCegarLoop]: Abstraction has 2507 states and 8701 transitions. [2021-06-06 00:13:06,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 8701 transitions. [2021-06-06 00:13:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:06,842 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:06,842 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:07,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3897,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:07,042 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:07,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2115011713, now seen corresponding path program 55 times [2021-06-06 00:13:07,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:07,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069165768] [2021-06-06 00:13:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:07,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:07,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069165768] [2021-06-06 00:13:07,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069165768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:07,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399458945] [2021-06-06 00:13:07,078 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 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 [2021-06-06 00:13:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:07,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:07,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:07,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399458945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:07,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:07,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:13:07,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25059090] [2021-06-06 00:13:07,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:07,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:07,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:07,181 INFO L87 Difference]: Start difference. First operand 2507 states and 8701 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:08,120 INFO L93 Difference]: Finished difference Result 5496 states and 17140 transitions. [2021-06-06 00:13:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:13:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:08,127 INFO L225 Difference]: With dead ends: 5496 [2021-06-06 00:13:08,127 INFO L226 Difference]: Without dead ends: 5496 [2021-06-06 00:13:08,127 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 550.0ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:13:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-06-06 00:13:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 2522. [2021-06-06 00:13:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 3.4668782229274098) internal successors, (8740), 2521 states have internal predecessors, (8740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 8740 transitions. [2021-06-06 00:13:08,170 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 8740 transitions. Word has length 28 [2021-06-06 00:13:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:08,170 INFO L482 AbstractCegarLoop]: Abstraction has 2522 states and 8740 transitions. [2021-06-06 00:13:08,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 8740 transitions. [2021-06-06 00:13:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:08,173 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:08,173 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:08,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3898,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:08,373 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 970325317, now seen corresponding path program 66 times [2021-06-06 00:13:08,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:08,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054020706] [2021-06-06 00:13:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:08,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:08,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054020706] [2021-06-06 00:13:08,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054020706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:08,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533387980] [2021-06-06 00:13:08,413 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 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:08,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:13:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:08,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:08,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:08,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533387980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:08,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:08,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:13:08,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578729805] [2021-06-06 00:13:08,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:08,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:08,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:08,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:08,518 INFO L87 Difference]: Start difference. First operand 2522 states and 8740 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:09,024 INFO L93 Difference]: Finished difference Result 4908 states and 15515 transitions. [2021-06-06 00:13:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:13:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:09,031 INFO L225 Difference]: With dead ends: 4908 [2021-06-06 00:13:09,031 INFO L226 Difference]: Without dead ends: 4908 [2021-06-06 00:13:09,031 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 275.8ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:13:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4908 states. [2021-06-06 00:13:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4908 to 2592. [2021-06-06 00:13:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 3.4515631030490157) internal successors, (8943), 2591 states have internal predecessors, (8943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 8943 transitions. [2021-06-06 00:13:09,071 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 8943 transitions. Word has length 28 [2021-06-06 00:13:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:09,071 INFO L482 AbstractCegarLoop]: Abstraction has 2592 states and 8943 transitions. [2021-06-06 00:13:09,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:09,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 8943 transitions. [2021-06-06 00:13:09,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:09,074 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:09,074 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:09,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3899 [2021-06-06 00:13:09,274 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:09,274 INFO L82 PathProgramCache]: Analyzing trace with hash 828956685, now seen corresponding path program 56 times [2021-06-06 00:13:09,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:09,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925430275] [2021-06-06 00:13:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:09,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:09,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925430275] [2021-06-06 00:13:09,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925430275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:09,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828552520] [2021-06-06 00:13:09,298 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 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:09,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:09,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:09,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:13:09,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:09,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828552520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:09,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:09,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:13:09,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938011444] [2021-06-06 00:13:09,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:13:09,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:09,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:13:09,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:13:09,368 INFO L87 Difference]: Start difference. First operand 2592 states and 8943 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2021-06-06 00:13:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:09,517 INFO L93 Difference]: Finished difference Result 4133 states and 13562 transitions. [2021-06-06 00:13:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:13:09,518 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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 28 [2021-06-06 00:13:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:09,523 INFO L225 Difference]: With dead ends: 4133 [2021-06-06 00:13:09,523 INFO L226 Difference]: Without dead ends: 4085 [2021-06-06 00:13:09,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:13:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2021-06-06 00:13:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 2922. [2021-06-06 00:13:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.501198219787744) internal successors, (10227), 2921 states have internal predecessors, (10227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10227 transitions. [2021-06-06 00:13:09,559 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10227 transitions. Word has length 28 [2021-06-06 00:13:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:09,559 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10227 transitions. [2021-06-06 00:13:09,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2021-06-06 00:13:09,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10227 transitions. [2021-06-06 00:13:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:09,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:09,562 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:09,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3900,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:09,762 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:09,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:09,763 INFO L82 PathProgramCache]: Analyzing trace with hash 391987977, now seen corresponding path program 57 times [2021-06-06 00:13:09,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:09,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350097692] [2021-06-06 00:13:09,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:09,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:09,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350097692] [2021-06-06 00:13:09,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350097692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:09,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444630884] [2021-06-06 00:13:09,791 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 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:09,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:13:09,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:09,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:09,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444630884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:09,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:09,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:13:09,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981306881] [2021-06-06 00:13:09,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:09,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:09,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:09,894 INFO L87 Difference]: Start difference. First operand 2922 states and 10227 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:10,391 INFO L93 Difference]: Finished difference Result 4714 states and 15191 transitions. [2021-06-06 00:13:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:13:10,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:10,397 INFO L225 Difference]: With dead ends: 4714 [2021-06-06 00:13:10,397 INFO L226 Difference]: Without dead ends: 4667 [2021-06-06 00:13:10,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 296.0ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:13:10,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2021-06-06 00:13:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 3096. [2021-06-06 00:13:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 3.5150242326332797) internal successors, (10879), 3095 states have internal predecessors, (10879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 10879 transitions. [2021-06-06 00:13:10,441 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 10879 transitions. Word has length 28 [2021-06-06 00:13:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:10,441 INFO L482 AbstractCegarLoop]: Abstraction has 3096 states and 10879 transitions. [2021-06-06 00:13:10,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 10879 transitions. [2021-06-06 00:13:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:10,444 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:10,444 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:10,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3901 [2021-06-06 00:13:10,645 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:10,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1928077453, now seen corresponding path program 58 times [2021-06-06 00:13:10,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:10,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917289402] [2021-06-06 00:13:10,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:10,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:10,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917289402] [2021-06-06 00:13:10,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917289402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:10,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855468446] [2021-06-06 00:13:10,674 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 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:10,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:10,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:10,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:10,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:10,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855468446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:10,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:10,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:13:10,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349778247] [2021-06-06 00:13:10,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:10,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:10,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:10,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:10,772 INFO L87 Difference]: Start difference. First operand 3096 states and 10879 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:11,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:11,360 INFO L93 Difference]: Finished difference Result 5031 states and 15895 transitions. [2021-06-06 00:13:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:13:11,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:11,366 INFO L225 Difference]: With dead ends: 5031 [2021-06-06 00:13:11,366 INFO L226 Difference]: Without dead ends: 5005 [2021-06-06 00:13:11,366 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 373.7ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:13:11,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5005 states. [2021-06-06 00:13:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5005 to 3120. [2021-06-06 00:13:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 3119 states have (on average 3.521000320615582) internal successors, (10982), 3119 states have internal predecessors, (10982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 10982 transitions. [2021-06-06 00:13:11,414 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 10982 transitions. Word has length 28 [2021-06-06 00:13:11,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:11,414 INFO L482 AbstractCegarLoop]: Abstraction has 3120 states and 10982 transitions. [2021-06-06 00:13:11,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 10982 transitions. [2021-06-06 00:13:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:11,418 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:11,418 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:11,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3902,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:11,619 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1694477061, now seen corresponding path program 59 times [2021-06-06 00:13:11,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:11,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849241545] [2021-06-06 00:13:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:11,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:11,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849241545] [2021-06-06 00:13:11,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849241545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:11,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185792640] [2021-06-06 00:13:11,648 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 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:11,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:13:11,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:11,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:11,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:11,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185792640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:11,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:11,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:13:11,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302055468] [2021-06-06 00:13:11,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:11,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:11,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:11,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:11,750 INFO L87 Difference]: Start difference. First operand 3120 states and 10982 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:12,361 INFO L93 Difference]: Finished difference Result 5035 states and 15933 transitions. [2021-06-06 00:13:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:13:12,361 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:12,367 INFO L225 Difference]: With dead ends: 5035 [2021-06-06 00:13:12,367 INFO L226 Difference]: Without dead ends: 5029 [2021-06-06 00:13:12,368 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 368.3ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:13:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-06-06 00:13:12,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 3123. [2021-06-06 00:13:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 3.5153747597693785) internal successors, (10975), 3122 states have internal predecessors, (10975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 10975 transitions. [2021-06-06 00:13:12,416 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 10975 transitions. Word has length 28 [2021-06-06 00:13:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:12,416 INFO L482 AbstractCegarLoop]: Abstraction has 3123 states and 10975 transitions. [2021-06-06 00:13:12,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:12,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 10975 transitions. [2021-06-06 00:13:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:12,419 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:12,419 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:12,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3903 [2021-06-06 00:13:12,620 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:12,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1551691313, now seen corresponding path program 60 times [2021-06-06 00:13:12,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:12,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867003368] [2021-06-06 00:13:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:12,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:12,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867003368] [2021-06-06 00:13:12,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867003368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:12,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721650968] [2021-06-06 00:13:12,649 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 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:12,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:13:12,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:12,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:12,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:12,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721650968] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:12,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:12,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:13:12,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913133006] [2021-06-06 00:13:12,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:12,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:12,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:12,736 INFO L87 Difference]: Start difference. First operand 3123 states and 10975 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:13:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:13,206 INFO L93 Difference]: Finished difference Result 5805 states and 18700 transitions. [2021-06-06 00:13:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:13:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:13:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:13,213 INFO L225 Difference]: With dead ends: 5805 [2021-06-06 00:13:13,213 INFO L226 Difference]: Without dead ends: 5722 [2021-06-06 00:13:13,213 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 261.9ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:13:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2021-06-06 00:13:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 3270. [2021-06-06 00:13:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 3.5460385438972164) internal successors, (11592), 3269 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 11592 transitions. [2021-06-06 00:13:13,264 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 11592 transitions. Word has length 28 [2021-06-06 00:13:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:13,264 INFO L482 AbstractCegarLoop]: Abstraction has 3270 states and 11592 transitions. [2021-06-06 00:13:13,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:13:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 11592 transitions. [2021-06-06 00:13:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:13,268 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:13,268 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:13,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3904 [2021-06-06 00:13:13,468 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:13,469 INFO L82 PathProgramCache]: Analyzing trace with hash -659497231, now seen corresponding path program 61 times [2021-06-06 00:13:13,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:13,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554070223] [2021-06-06 00:13:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:13,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:13,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554070223] [2021-06-06 00:13:13,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554070223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:13,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350459983] [2021-06-06 00:13:13,489 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 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:13:13,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:13,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350459983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:13,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:13,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-06 00:13:13,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930711166] [2021-06-06 00:13:13,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:13:13,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:13,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:13:13,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:13:13,561 INFO L87 Difference]: Start difference. First operand 3270 states and 11592 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:13,696 INFO L93 Difference]: Finished difference Result 4551 states and 15064 transitions. [2021-06-06 00:13:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:13:13,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:13,702 INFO L225 Difference]: With dead ends: 4551 [2021-06-06 00:13:13,702 INFO L226 Difference]: Without dead ends: 4551 [2021-06-06 00:13:13,702 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2021-06-06 00:13:13,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 3038. [2021-06-06 00:13:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3037 states have (on average 3.5284820546592033) internal successors, (10716), 3037 states have internal predecessors, (10716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 10716 transitions. [2021-06-06 00:13:13,742 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 10716 transitions. Word has length 28 [2021-06-06 00:13:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:13,742 INFO L482 AbstractCegarLoop]: Abstraction has 3038 states and 10716 transitions. [2021-06-06 00:13:13,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:13,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 10716 transitions. [2021-06-06 00:13:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:13,746 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:13,746 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:13,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3905 [2021-06-06 00:13:13,946 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:13,946 INFO L82 PathProgramCache]: Analyzing trace with hash -2006178797, now seen corresponding path program 62 times [2021-06-06 00:13:13,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:13,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102405026] [2021-06-06 00:13:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:13,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:13,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102405026] [2021-06-06 00:13:13,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102405026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:13,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972478442] [2021-06-06 00:13:13,976 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 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:14,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:14,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:14,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972478442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:14,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:14,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:13:14,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879099270] [2021-06-06 00:13:14,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:14,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:14,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:14,072 INFO L87 Difference]: Start difference. First operand 3038 states and 10716 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:14,634 INFO L93 Difference]: Finished difference Result 6432 states and 20472 transitions. [2021-06-06 00:13:14,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:13:14,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:14,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:14,642 INFO L225 Difference]: With dead ends: 6432 [2021-06-06 00:13:14,642 INFO L226 Difference]: Without dead ends: 6432 [2021-06-06 00:13:14,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 331.2ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:13:14,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2021-06-06 00:13:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 3056. [2021-06-06 00:13:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 3055 states have (on average 3.528314238952537) internal successors, (10779), 3055 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 10779 transitions. [2021-06-06 00:13:14,697 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 10779 transitions. Word has length 28 [2021-06-06 00:13:14,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:14,697 INFO L482 AbstractCegarLoop]: Abstraction has 3056 states and 10779 transitions. [2021-06-06 00:13:14,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 10779 transitions. [2021-06-06 00:13:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:14,701 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:14,701 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:14,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3906 [2021-06-06 00:13:14,902 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1221264703, now seen corresponding path program 63 times [2021-06-06 00:13:14,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:14,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394038127] [2021-06-06 00:13:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:14,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:14,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394038127] [2021-06-06 00:13:14,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394038127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:14,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133499398] [2021-06-06 00:13:14,932 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 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:14,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:13:14,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:14,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:14,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:15,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133499398] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:15,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:15,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:13:15,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464962795] [2021-06-06 00:13:15,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:15,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:15,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:15,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:15,017 INFO L87 Difference]: Start difference. First operand 3056 states and 10779 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:15,693 INFO L93 Difference]: Finished difference Result 6687 states and 21252 transitions. [2021-06-06 00:13:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:13:15,693 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:15,701 INFO L225 Difference]: With dead ends: 6687 [2021-06-06 00:13:15,701 INFO L226 Difference]: Without dead ends: 6687 [2021-06-06 00:13:15,702 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 365.4ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 00:13:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2021-06-06 00:13:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 3150. [2021-06-06 00:13:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 3149 states have (on average 3.520482692918387) internal successors, (11086), 3149 states have internal predecessors, (11086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 11086 transitions. [2021-06-06 00:13:15,760 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 11086 transitions. Word has length 28 [2021-06-06 00:13:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:15,760 INFO L482 AbstractCegarLoop]: Abstraction has 3150 states and 11086 transitions. [2021-06-06 00:13:15,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 11086 transitions. [2021-06-06 00:13:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:15,763 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:15,763 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:15,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3907 [2021-06-06 00:13:15,964 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1990679937, now seen corresponding path program 64 times [2021-06-06 00:13:15,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:15,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748577190] [2021-06-06 00:13:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:15,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:15,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748577190] [2021-06-06 00:13:15,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748577190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:15,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958342382] [2021-06-06 00:13:15,992 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 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:16,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:16,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:16,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:16,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:16,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958342382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:16,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:16,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:13:16,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106817459] [2021-06-06 00:13:16,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:16,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:16,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:16,072 INFO L87 Difference]: Start difference. First operand 3150 states and 11086 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:13:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:16,604 INFO L93 Difference]: Finished difference Result 6847 states and 21782 transitions. [2021-06-06 00:13:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:13:16,604 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:13:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:16,612 INFO L225 Difference]: With dead ends: 6847 [2021-06-06 00:13:16,612 INFO L226 Difference]: Without dead ends: 6811 [2021-06-06 00:13:16,612 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 307.9ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:13:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2021-06-06 00:13:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 3552. [2021-06-06 00:13:16,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3551 states have (on average 3.5457617572514786) internal successors, (12591), 3551 states have internal predecessors, (12591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 12591 transitions. [2021-06-06 00:13:16,675 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 12591 transitions. Word has length 28 [2021-06-06 00:13:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:16,675 INFO L482 AbstractCegarLoop]: Abstraction has 3552 states and 12591 transitions. [2021-06-06 00:13:16,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:13:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 12591 transitions. [2021-06-06 00:13:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:16,679 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:16,679 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:16,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3908,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:16,880 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash -833209241, now seen corresponding path program 65 times [2021-06-06 00:13:16,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:16,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509568284] [2021-06-06 00:13:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:16,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:16,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509568284] [2021-06-06 00:13:16,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509568284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:16,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677725002] [2021-06-06 00:13:16,907 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 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:16,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:13:16,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:16,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:16,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:16,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677725002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:16,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:16,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:13:16,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139204988] [2021-06-06 00:13:16,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:16,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:16,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:16,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:16,990 INFO L87 Difference]: Start difference. First operand 3552 states and 12591 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:13:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:17,485 INFO L93 Difference]: Finished difference Result 7020 states and 22256 transitions. [2021-06-06 00:13:17,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:13:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:13:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:17,494 INFO L225 Difference]: With dead ends: 7020 [2021-06-06 00:13:17,494 INFO L226 Difference]: Without dead ends: 7020 [2021-06-06 00:13:17,495 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 302.2ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:13:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2021-06-06 00:13:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 3265. [2021-06-06 00:13:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3264 states have (on average 3.5082720588235294) internal successors, (11451), 3264 states have internal predecessors, (11451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 11451 transitions. [2021-06-06 00:13:17,569 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 11451 transitions. Word has length 28 [2021-06-06 00:13:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:17,570 INFO L482 AbstractCegarLoop]: Abstraction has 3265 states and 11451 transitions. [2021-06-06 00:13:17,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:13:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 11451 transitions. [2021-06-06 00:13:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:17,573 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:17,573 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:17,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3909,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:17,774 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:17,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1266085845, now seen corresponding path program 66 times [2021-06-06 00:13:17,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:17,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44934064] [2021-06-06 00:13:17,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:17,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:17,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44934064] [2021-06-06 00:13:17,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44934064] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:17,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655200297] [2021-06-06 00:13:17,810 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 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:17,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:13:17,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:17,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:17,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:17,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655200297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:17,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:17,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:13:17,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565613543] [2021-06-06 00:13:17,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:17,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:17,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:17,900 INFO L87 Difference]: Start difference. First operand 3265 states and 11451 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:18,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:18,467 INFO L93 Difference]: Finished difference Result 6180 states and 19991 transitions. [2021-06-06 00:13:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:13:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:18,476 INFO L225 Difference]: With dead ends: 6180 [2021-06-06 00:13:18,476 INFO L226 Difference]: Without dead ends: 6176 [2021-06-06 00:13:18,476 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 330.0ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:13:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-06-06 00:13:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 3025. [2021-06-06 00:13:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3025 states, 3024 states have (on average 3.5327380952380953) internal successors, (10683), 3024 states have internal predecessors, (10683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 10683 transitions. [2021-06-06 00:13:18,543 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 10683 transitions. Word has length 28 [2021-06-06 00:13:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:18,543 INFO L482 AbstractCegarLoop]: Abstraction has 3025 states and 10683 transitions. [2021-06-06 00:13:18,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 10683 transitions. [2021-06-06 00:13:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:18,546 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:18,546 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:18,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3910 [2021-06-06 00:13:18,747 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:18,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:18,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1538095035, now seen corresponding path program 67 times [2021-06-06 00:13:18,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:18,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499450332] [2021-06-06 00:13:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:18,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:18,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499450332] [2021-06-06 00:13:18,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499450332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:18,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807959655] [2021-06-06 00:13:18,776 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 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:18,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:18,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807959655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:18,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:18,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:13:18,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953711933] [2021-06-06 00:13:18,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:18,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:18,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:18,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:18,877 INFO L87 Difference]: Start difference. First operand 3025 states and 10683 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:19,736 INFO L93 Difference]: Finished difference Result 9433 states and 30825 transitions. [2021-06-06 00:13:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:13:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:19,748 INFO L225 Difference]: With dead ends: 9433 [2021-06-06 00:13:19,748 INFO L226 Difference]: Without dead ends: 9433 [2021-06-06 00:13:19,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 502.3ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:13:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9433 states. [2021-06-06 00:13:19,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9433 to 3201. [2021-06-06 00:13:19,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3200 states have (on average 3.6003125) internal successors, (11521), 3200 states have internal predecessors, (11521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 11521 transitions. [2021-06-06 00:13:19,823 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 11521 transitions. Word has length 28 [2021-06-06 00:13:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:19,823 INFO L482 AbstractCegarLoop]: Abstraction has 3201 states and 11521 transitions. [2021-06-06 00:13:19,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 11521 transitions. [2021-06-06 00:13:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:19,827 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:19,827 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:20,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3911 [2021-06-06 00:13:20,027 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:20,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:20,028 INFO L82 PathProgramCache]: Analyzing trace with hash -971142955, now seen corresponding path program 68 times [2021-06-06 00:13:20,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:20,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260219066] [2021-06-06 00:13:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:20,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:20,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260219066] [2021-06-06 00:13:20,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260219066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:20,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740108909] [2021-06-06 00:13:20,057 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 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:20,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:20,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:20,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:20,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740108909] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:20,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:20,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:13:20,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236558484] [2021-06-06 00:13:20,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:20,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:20,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:20,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:20,158 INFO L87 Difference]: Start difference. First operand 3201 states and 11521 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:21,041 INFO L93 Difference]: Finished difference Result 9262 states and 30360 transitions. [2021-06-06 00:13:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:13:21,041 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:21,055 INFO L225 Difference]: With dead ends: 9262 [2021-06-06 00:13:21,055 INFO L226 Difference]: Without dead ends: 9262 [2021-06-06 00:13:21,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 522.0ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:13:21,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9262 states. [2021-06-06 00:13:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9262 to 3173. [2021-06-06 00:13:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 3172 states have (on average 3.5851197982345524) internal successors, (11372), 3172 states have internal predecessors, (11372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 11372 transitions. [2021-06-06 00:13:21,131 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 11372 transitions. Word has length 28 [2021-06-06 00:13:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:21,131 INFO L482 AbstractCegarLoop]: Abstraction has 3173 states and 11372 transitions. [2021-06-06 00:13:21,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 11372 transitions. [2021-06-06 00:13:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:21,135 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:21,135 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:21,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3912,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:21,335 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:21,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:21,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2143488813, now seen corresponding path program 69 times [2021-06-06 00:13:21,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:21,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8162001] [2021-06-06 00:13:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:21,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:21,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8162001] [2021-06-06 00:13:21,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8162001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:21,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985701101] [2021-06-06 00:13:21,364 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 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:21,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:13:21,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:21,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:21,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:21,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985701101] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:21,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:21,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:13:21,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835778426] [2021-06-06 00:13:21,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:21,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:21,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:21,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:21,456 INFO L87 Difference]: Start difference. First operand 3173 states and 11372 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:22,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:22,239 INFO L93 Difference]: Finished difference Result 8699 states and 27601 transitions. [2021-06-06 00:13:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:13:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:22,250 INFO L225 Difference]: With dead ends: 8699 [2021-06-06 00:13:22,250 INFO L226 Difference]: Without dead ends: 8699 [2021-06-06 00:13:22,250 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 419.2ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:13:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2021-06-06 00:13:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 3193. [2021-06-06 00:13:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 3192 states have (on average 3.588345864661654) internal successors, (11454), 3192 states have internal predecessors, (11454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 11454 transitions. [2021-06-06 00:13:22,326 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 11454 transitions. Word has length 28 [2021-06-06 00:13:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:22,326 INFO L482 AbstractCegarLoop]: Abstraction has 3193 states and 11454 transitions. [2021-06-06 00:13:22,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 11454 transitions. [2021-06-06 00:13:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:22,329 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:22,329 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:22,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3913 [2021-06-06 00:13:22,530 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:22,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:22,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2062112725, now seen corresponding path program 70 times [2021-06-06 00:13:22,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:22,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403203644] [2021-06-06 00:13:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:22,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:22,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403203644] [2021-06-06 00:13:22,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403203644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:22,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640861052] [2021-06-06 00:13:22,559 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 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:22,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:22,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:22,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:22,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:22,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640861052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:22,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:22,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:13:22,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738974151] [2021-06-06 00:13:22,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:22,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:22,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:22,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:22,645 INFO L87 Difference]: Start difference. First operand 3193 states and 11454 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:23,393 INFO L93 Difference]: Finished difference Result 8208 states and 26413 transitions. [2021-06-06 00:13:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:13:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:23,403 INFO L225 Difference]: With dead ends: 8208 [2021-06-06 00:13:23,403 INFO L226 Difference]: Without dead ends: 8200 [2021-06-06 00:13:23,404 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 397.3ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:13:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2021-06-06 00:13:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 3175. [2021-06-06 00:13:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3175 states, 3174 states have (on average 3.584436042848141) internal successors, (11377), 3174 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 11377 transitions. [2021-06-06 00:13:23,470 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 11377 transitions. Word has length 28 [2021-06-06 00:13:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:23,470 INFO L482 AbstractCegarLoop]: Abstraction has 3175 states and 11377 transitions. [2021-06-06 00:13:23,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 11377 transitions. [2021-06-06 00:13:23,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:23,474 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:23,474 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:23,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3914,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:23,674 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:23,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1131455509, now seen corresponding path program 71 times [2021-06-06 00:13:23,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:23,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986864124] [2021-06-06 00:13:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:23,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:23,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986864124] [2021-06-06 00:13:23,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986864124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:23,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643815228] [2021-06-06 00:13:23,703 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 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:23,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:13:23,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:23,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:23,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:23,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643815228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:23,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:23,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:13:23,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269833546] [2021-06-06 00:13:23,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:23,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:23,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:23,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:23,802 INFO L87 Difference]: Start difference. First operand 3175 states and 11377 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:24,602 INFO L93 Difference]: Finished difference Result 8126 states and 26160 transitions. [2021-06-06 00:13:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-06 00:13:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:24,614 INFO L225 Difference]: With dead ends: 8126 [2021-06-06 00:13:24,614 INFO L226 Difference]: Without dead ends: 8126 [2021-06-06 00:13:24,614 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 461.8ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:13:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8126 states. [2021-06-06 00:13:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8126 to 3191. [2021-06-06 00:13:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3191 states, 3190 states have (on average 3.5865203761755486) internal successors, (11441), 3190 states have internal predecessors, (11441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 11441 transitions. [2021-06-06 00:13:24,678 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 11441 transitions. Word has length 28 [2021-06-06 00:13:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:24,678 INFO L482 AbstractCegarLoop]: Abstraction has 3191 states and 11441 transitions. [2021-06-06 00:13:24,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 11441 transitions. [2021-06-06 00:13:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:24,682 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:24,682 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:24,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3915 [2021-06-06 00:13:24,882 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:24,883 INFO L82 PathProgramCache]: Analyzing trace with hash 511583645, now seen corresponding path program 72 times [2021-06-06 00:13:24,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:24,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266990677] [2021-06-06 00:13:24,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:24,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:24,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266990677] [2021-06-06 00:13:24,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266990677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:24,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742428455] [2021-06-06 00:13:24,911 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 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:24,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 00:13:24,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:24,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:24,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:25,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742428455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:25,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:25,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:13:25,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287793010] [2021-06-06 00:13:25,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:25,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:25,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:25,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:25,006 INFO L87 Difference]: Start difference. First operand 3191 states and 11441 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:25,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:25,807 INFO L93 Difference]: Finished difference Result 7794 states and 25376 transitions. [2021-06-06 00:13:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:13:25,807 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:25,835 INFO L225 Difference]: With dead ends: 7794 [2021-06-06 00:13:25,835 INFO L226 Difference]: Without dead ends: 7786 [2021-06-06 00:13:25,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 426.8ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:13:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7786 states. [2021-06-06 00:13:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7786 to 2948. [2021-06-06 00:13:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2947 states have (on average 3.508313539192399) internal successors, (10339), 2947 states have internal predecessors, (10339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 10339 transitions. [2021-06-06 00:13:25,895 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 10339 transitions. Word has length 28 [2021-06-06 00:13:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:25,895 INFO L482 AbstractCegarLoop]: Abstraction has 2948 states and 10339 transitions. [2021-06-06 00:13:25,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 10339 transitions. [2021-06-06 00:13:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:25,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:25,898 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:26,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3916 [2021-06-06 00:13:26,098 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:26,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:26,099 INFO L82 PathProgramCache]: Analyzing trace with hash 594987225, now seen corresponding path program 73 times [2021-06-06 00:13:26,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:26,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335197720] [2021-06-06 00:13:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:26,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:26,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335197720] [2021-06-06 00:13:26,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335197720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:26,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418471889] [2021-06-06 00:13:26,128 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 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:26,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:26,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418471889] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:26,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:26,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:13:26,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703747520] [2021-06-06 00:13:26,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:26,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:26,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:26,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:26,229 INFO L87 Difference]: Start difference. First operand 2948 states and 10339 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:26,921 INFO L93 Difference]: Finished difference Result 6003 states and 19292 transitions. [2021-06-06 00:13:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:13:26,921 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:26,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:26,929 INFO L225 Difference]: With dead ends: 6003 [2021-06-06 00:13:26,929 INFO L226 Difference]: Without dead ends: 6003 [2021-06-06 00:13:26,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 434.8ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:13:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6003 states. [2021-06-06 00:13:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6003 to 2960. [2021-06-06 00:13:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2959 states have (on average 3.5069280162216967) internal successors, (10377), 2959 states have internal predecessors, (10377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 10377 transitions. [2021-06-06 00:13:26,998 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 10377 transitions. Word has length 28 [2021-06-06 00:13:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:26,998 INFO L482 AbstractCegarLoop]: Abstraction has 2960 states and 10377 transitions. [2021-06-06 00:13:26,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 10377 transitions. [2021-06-06 00:13:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:27,001 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:27,001 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:27,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3917 [2021-06-06 00:13:27,202 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:27,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2046619895, now seen corresponding path program 74 times [2021-06-06 00:13:27,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:27,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048528219] [2021-06-06 00:13:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:27,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:27,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048528219] [2021-06-06 00:13:27,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048528219] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:27,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277470321] [2021-06-06 00:13:27,233 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 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:27,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:27,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:27,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:27,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:27,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277470321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:27,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:27,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:13:27,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811822541] [2021-06-06 00:13:27,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:27,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:27,347 INFO L87 Difference]: Start difference. First operand 2960 states and 10377 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:28,294 INFO L93 Difference]: Finished difference Result 6789 states and 21302 transitions. [2021-06-06 00:13:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:13:28,294 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:28,303 INFO L225 Difference]: With dead ends: 6789 [2021-06-06 00:13:28,303 INFO L226 Difference]: Without dead ends: 6789 [2021-06-06 00:13:28,303 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 579.9ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:13:28,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2021-06-06 00:13:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 3026. [2021-06-06 00:13:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3025 states have (on average 3.5021487603305785) internal successors, (10594), 3025 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 10594 transitions. [2021-06-06 00:13:28,378 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 10594 transitions. Word has length 28 [2021-06-06 00:13:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:28,379 INFO L482 AbstractCegarLoop]: Abstraction has 3026 states and 10594 transitions. [2021-06-06 00:13:28,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 10594 transitions. [2021-06-06 00:13:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:28,382 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:28,382 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:28,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3918 [2021-06-06 00:13:28,582 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:28,583 INFO L82 PathProgramCache]: Analyzing trace with hash -403580741, now seen corresponding path program 75 times [2021-06-06 00:13:28,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:28,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854964847] [2021-06-06 00:13:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:28,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:28,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854964847] [2021-06-06 00:13:28,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854964847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:28,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641243058] [2021-06-06 00:13:28,615 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 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:28,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:13:28,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:28,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:28,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641243058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:28,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:28,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:13:28,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980793802] [2021-06-06 00:13:28,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:28,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:28,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:28,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:28,730 INFO L87 Difference]: Start difference. First operand 3026 states and 10594 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:29,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:29,594 INFO L93 Difference]: Finished difference Result 6345 states and 20138 transitions. [2021-06-06 00:13:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:13:29,595 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:29,603 INFO L225 Difference]: With dead ends: 6345 [2021-06-06 00:13:29,603 INFO L226 Difference]: Without dead ends: 6341 [2021-06-06 00:13:29,603 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 522.7ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:13:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6341 states. [2021-06-06 00:13:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6341 to 2952. [2021-06-06 00:13:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2951 states have (on average 3.4984750931887496) internal successors, (10324), 2951 states have internal predecessors, (10324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:29,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 10324 transitions. [2021-06-06 00:13:29,659 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 10324 transitions. Word has length 28 [2021-06-06 00:13:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:29,659 INFO L482 AbstractCegarLoop]: Abstraction has 2952 states and 10324 transitions. [2021-06-06 00:13:29,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 10324 transitions. [2021-06-06 00:13:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:29,662 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:29,662 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:29,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3919 [2021-06-06 00:13:29,862 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:29,862 INFO L82 PathProgramCache]: Analyzing trace with hash 175862483, now seen corresponding path program 67 times [2021-06-06 00:13:29,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:29,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603242141] [2021-06-06 00:13:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:29,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:29,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603242141] [2021-06-06 00:13:29,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603242141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:29,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846197336] [2021-06-06 00:13:29,898 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 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:29,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:29,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:29,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846197336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:29,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:29,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:13:29,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346065504] [2021-06-06 00:13:29,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:29,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:29,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:29,983 INFO L87 Difference]: Start difference. First operand 2952 states and 10324 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:30,479 INFO L93 Difference]: Finished difference Result 5472 states and 17679 transitions. [2021-06-06 00:13:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:13:30,479 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 28 [2021-06-06 00:13:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:30,486 INFO L225 Difference]: With dead ends: 5472 [2021-06-06 00:13:30,486 INFO L226 Difference]: Without dead ends: 5472 [2021-06-06 00:13:30,487 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 275.6ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:13:30,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5472 states. [2021-06-06 00:13:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5472 to 2952. [2021-06-06 00:13:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2951 states have (on average 3.5005083022704166) internal successors, (10330), 2951 states have internal predecessors, (10330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 10330 transitions. [2021-06-06 00:13:30,530 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 10330 transitions. Word has length 28 [2021-06-06 00:13:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:30,530 INFO L482 AbstractCegarLoop]: Abstraction has 2952 states and 10330 transitions. [2021-06-06 00:13:30,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 10330 transitions. [2021-06-06 00:13:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:30,533 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:30,533 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:30,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3920 [2021-06-06 00:13:30,734 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:30,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1435937279, now seen corresponding path program 68 times [2021-06-06 00:13:30,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:30,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761606333] [2021-06-06 00:13:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:30,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:30,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761606333] [2021-06-06 00:13:30,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761606333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:30,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477160267] [2021-06-06 00:13:30,768 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 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:30,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:30,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:30,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:30,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:30,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477160267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:30,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:30,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:13:30,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538703211] [2021-06-06 00:13:30,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:30,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:30,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:30,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:30,852 INFO L87 Difference]: Start difference. First operand 2952 states and 10330 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:31,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:31,475 INFO L93 Difference]: Finished difference Result 5809 states and 18633 transitions. [2021-06-06 00:13:31,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:13:31,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 28 [2021-06-06 00:13:31,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:31,483 INFO L225 Difference]: With dead ends: 5809 [2021-06-06 00:13:31,483 INFO L226 Difference]: Without dead ends: 5809 [2021-06-06 00:13:31,483 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 365.1ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:13:31,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-06-06 00:13:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 2943. [2021-06-06 00:13:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2942 states have (on average 3.500679809653297) internal successors, (10299), 2942 states have internal predecessors, (10299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 10299 transitions. [2021-06-06 00:13:31,553 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 10299 transitions. Word has length 28 [2021-06-06 00:13:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:31,553 INFO L482 AbstractCegarLoop]: Abstraction has 2943 states and 10299 transitions. [2021-06-06 00:13:31,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 10299 transitions. [2021-06-06 00:13:31,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:31,557 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:31,557 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:31,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3921,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:31,760 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1667476927, now seen corresponding path program 69 times [2021-06-06 00:13:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:31,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098572556] [2021-06-06 00:13:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:31,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:31,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098572556] [2021-06-06 00:13:31,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098572556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:31,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784327047] [2021-06-06 00:13:31,795 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 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:31,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:13:31,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:31,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:31,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:31,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784327047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:31,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:31,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:13:31,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201253522] [2021-06-06 00:13:31,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:31,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:31,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:31,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:31,880 INFO L87 Difference]: Start difference. First operand 2943 states and 10299 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:32,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:32,594 INFO L93 Difference]: Finished difference Result 6283 states and 19914 transitions. [2021-06-06 00:13:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:13:32,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 28 [2021-06-06 00:13:32,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:32,603 INFO L225 Difference]: With dead ends: 6283 [2021-06-06 00:13:32,603 INFO L226 Difference]: Without dead ends: 6283 [2021-06-06 00:13:32,603 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 415.6ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:13:32,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2021-06-06 00:13:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 3003. [2021-06-06 00:13:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 3.4966688874083944) internal successors, (10497), 3002 states have internal predecessors, (10497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 10497 transitions. [2021-06-06 00:13:32,656 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 10497 transitions. Word has length 28 [2021-06-06 00:13:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:32,657 INFO L482 AbstractCegarLoop]: Abstraction has 3003 states and 10497 transitions. [2021-06-06 00:13:32,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:32,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 10497 transitions. [2021-06-06 00:13:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:32,660 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:32,660 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:32,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3922 [2021-06-06 00:13:32,860 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:32,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1647761113, now seen corresponding path program 70 times [2021-06-06 00:13:32,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:32,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625209562] [2021-06-06 00:13:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:32,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:32,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625209562] [2021-06-06 00:13:32,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625209562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:32,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702360971] [2021-06-06 00:13:32,889 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 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:32,910 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:32,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:32,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:32,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:32,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702360971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:32,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:32,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-06 00:13:32,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581552077] [2021-06-06 00:13:32,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:32,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:32,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:32,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:32,986 INFO L87 Difference]: Start difference. First operand 3003 states and 10497 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:33,454 INFO L93 Difference]: Finished difference Result 7087 states and 23881 transitions. [2021-06-06 00:13:33,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:13:33,454 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:33,465 INFO L225 Difference]: With dead ends: 7087 [2021-06-06 00:13:33,465 INFO L226 Difference]: Without dead ends: 7087 [2021-06-06 00:13:33,465 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 308.3ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:13:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2021-06-06 00:13:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 4173. [2021-06-06 00:13:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4173 states, 4172 states have (on average 3.6116970278044103) internal successors, (15068), 4172 states have internal predecessors, (15068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 15068 transitions. [2021-06-06 00:13:33,535 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 15068 transitions. Word has length 28 [2021-06-06 00:13:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:33,535 INFO L482 AbstractCegarLoop]: Abstraction has 4173 states and 15068 transitions. [2021-06-06 00:13:33,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 15068 transitions. [2021-06-06 00:13:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:33,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:33,540 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:33,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3923,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:33,740 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:33,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1712298069, now seen corresponding path program 71 times [2021-06-06 00:13:33,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:33,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795430452] [2021-06-06 00:13:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:33,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:33,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795430452] [2021-06-06 00:13:33,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795430452] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:33,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295310903] [2021-06-06 00:13:33,774 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 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:33,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 00:13:33,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:33,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:33,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:33,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295310903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:33,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:33,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:13:33,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922204525] [2021-06-06 00:13:33,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:33,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:33,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:33,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:33,854 INFO L87 Difference]: Start difference. First operand 4173 states and 15068 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:34,563 INFO L93 Difference]: Finished difference Result 7520 states and 25447 transitions. [2021-06-06 00:13:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:13:34,564 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 28 [2021-06-06 00:13:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:34,576 INFO L225 Difference]: With dead ends: 7520 [2021-06-06 00:13:34,576 INFO L226 Difference]: Without dead ends: 7516 [2021-06-06 00:13:34,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 382.7ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:13:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2021-06-06 00:13:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 4065. [2021-06-06 00:13:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 4064 states have (on average 3.6205708661417324) internal successors, (14714), 4064 states have internal predecessors, (14714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 14714 transitions. [2021-06-06 00:13:34,672 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 14714 transitions. Word has length 28 [2021-06-06 00:13:34,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:34,672 INFO L482 AbstractCegarLoop]: Abstraction has 4065 states and 14714 transitions. [2021-06-06 00:13:34,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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) [2021-06-06 00:13:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 14714 transitions. [2021-06-06 00:13:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:34,677 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:34,677 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:34,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3924 [2021-06-06 00:13:34,877 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:34,877 INFO L82 PathProgramCache]: Analyzing trace with hash 307959399, now seen corresponding path program 76 times [2021-06-06 00:13:34,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:34,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634097700] [2021-06-06 00:13:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:34,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:34,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634097700] [2021-06-06 00:13:34,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634097700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:34,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406160948] [2021-06-06 00:13:34,901 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 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:34,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:34,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:34,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:34,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406160948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:34,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:34,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:13:34,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592182789] [2021-06-06 00:13:34,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:34,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:34,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:34,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:34,993 INFO L87 Difference]: Start difference. First operand 4065 states and 14714 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:35,702 INFO L93 Difference]: Finished difference Result 8329 states and 27951 transitions. [2021-06-06 00:13:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:13:35,702 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:35,713 INFO L225 Difference]: With dead ends: 8329 [2021-06-06 00:13:35,713 INFO L226 Difference]: Without dead ends: 8320 [2021-06-06 00:13:35,714 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 397.2ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:13:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8320 states. [2021-06-06 00:13:35,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8320 to 4505. [2021-06-06 00:13:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4505 states, 4504 states have (on average 3.70892539964476) internal successors, (16705), 4504 states have internal predecessors, (16705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4505 states to 4505 states and 16705 transitions. [2021-06-06 00:13:35,798 INFO L78 Accepts]: Start accepts. Automaton has 4505 states and 16705 transitions. Word has length 28 [2021-06-06 00:13:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:35,798 INFO L482 AbstractCegarLoop]: Abstraction has 4505 states and 16705 transitions. [2021-06-06 00:13:35,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4505 states and 16705 transitions. [2021-06-06 00:13:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:35,803 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:35,803 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:36,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3925,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:36,003 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1945666497, now seen corresponding path program 77 times [2021-06-06 00:13:36,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:36,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806546721] [2021-06-06 00:13:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:36,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:36,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:36,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806546721] [2021-06-06 00:13:36,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806546721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:36,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172947561] [2021-06-06 00:13:36,027 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 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:36,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:13:36,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:36,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:36,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:36,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172947561] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:36,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:36,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:13:36,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857098742] [2021-06-06 00:13:36,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:36,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:36,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:36,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:36,118 INFO L87 Difference]: Start difference. First operand 4505 states and 16705 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:36,820 INFO L93 Difference]: Finished difference Result 8622 states and 28858 transitions. [2021-06-06 00:13:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:13:36,821 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:36,832 INFO L225 Difference]: With dead ends: 8622 [2021-06-06 00:13:36,832 INFO L226 Difference]: Without dead ends: 8622 [2021-06-06 00:13:36,832 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 407.2ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:13:36,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2021-06-06 00:13:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 4525. [2021-06-06 00:13:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4525 states, 4524 states have (on average 3.6965075154730327) internal successors, (16723), 4524 states have internal predecessors, (16723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 16723 transitions. [2021-06-06 00:13:36,917 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 16723 transitions. Word has length 28 [2021-06-06 00:13:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:36,917 INFO L482 AbstractCegarLoop]: Abstraction has 4525 states and 16723 transitions. [2021-06-06 00:13:36,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 16723 transitions. [2021-06-06 00:13:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:36,923 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:36,923 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:37,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3926 [2021-06-06 00:13:37,123 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:37,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:37,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1145894509, now seen corresponding path program 78 times [2021-06-06 00:13:37,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:37,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338446278] [2021-06-06 00:13:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:37,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:37,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338446278] [2021-06-06 00:13:37,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338446278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:37,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797984096] [2021-06-06 00:13:37,158 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 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:37,179 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:13:37,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:37,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:37,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:37,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797984096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:37,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:37,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:13:37,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263906494] [2021-06-06 00:13:37,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:13:37,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:37,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:13:37,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:13:37,233 INFO L87 Difference]: Start difference. First operand 4525 states and 16723 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:37,586 INFO L93 Difference]: Finished difference Result 8054 states and 28373 transitions. [2021-06-06 00:13:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:13:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:37,599 INFO L225 Difference]: With dead ends: 8054 [2021-06-06 00:13:37,600 INFO L226 Difference]: Without dead ends: 7950 [2021-06-06 00:13:37,600 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:13:37,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7950 states. [2021-06-06 00:13:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7950 to 5973. [2021-06-06 00:13:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5972 states have (on average 3.7582049564634965) internal successors, (22444), 5972 states have internal predecessors, (22444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 22444 transitions. [2021-06-06 00:13:37,713 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 22444 transitions. Word has length 28 [2021-06-06 00:13:37,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:37,713 INFO L482 AbstractCegarLoop]: Abstraction has 5973 states and 22444 transitions. [2021-06-06 00:13:37,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 22444 transitions. [2021-06-06 00:13:37,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:37,721 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:37,721 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:37,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3927 [2021-06-06 00:13:37,921 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:37,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:37,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1941057807, now seen corresponding path program 79 times [2021-06-06 00:13:37,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:37,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794245077] [2021-06-06 00:13:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:37,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:37,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794245077] [2021-06-06 00:13:37,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794245077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:37,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811709132] [2021-06-06 00:13:37,945 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 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:37,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:13:37,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:38,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811709132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:38,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:38,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:13:38,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379070027] [2021-06-06 00:13:38,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:13:38,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:38,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:13:38,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:13:38,010 INFO L87 Difference]: Start difference. First operand 5973 states and 22444 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:38,161 INFO L93 Difference]: Finished difference Result 8289 states and 29168 transitions. [2021-06-06 00:13:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:13:38,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:38,174 INFO L225 Difference]: With dead ends: 8289 [2021-06-06 00:13:38,174 INFO L226 Difference]: Without dead ends: 8289 [2021-06-06 00:13:38,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:13:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2021-06-06 00:13:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 6119. [2021-06-06 00:13:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 6118 states have (on average 3.7355344883949004) internal successors, (22854), 6118 states have internal predecessors, (22854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 22854 transitions. [2021-06-06 00:13:38,267 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 22854 transitions. Word has length 28 [2021-06-06 00:13:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:38,267 INFO L482 AbstractCegarLoop]: Abstraction has 6119 states and 22854 transitions. [2021-06-06 00:13:38,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 22854 transitions. [2021-06-06 00:13:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:38,275 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:38,275 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:38,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3928 [2021-06-06 00:13:38,475 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:38,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:38,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1010858063, now seen corresponding path program 80 times [2021-06-06 00:13:38,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:38,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251677252] [2021-06-06 00:13:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:38,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:38,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251677252] [2021-06-06 00:13:38,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251677252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:38,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524899574] [2021-06-06 00:13:38,510 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 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:38,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:38,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:38,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:38,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:38,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524899574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:38,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:38,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:13:38,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708914545] [2021-06-06 00:13:38,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:38,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:38,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:38,584 INFO L87 Difference]: Start difference. First operand 6119 states and 22854 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:39,219 INFO L93 Difference]: Finished difference Result 12663 states and 44044 transitions. [2021-06-06 00:13:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:13:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:39,240 INFO L225 Difference]: With dead ends: 12663 [2021-06-06 00:13:39,240 INFO L226 Difference]: Without dead ends: 12663 [2021-06-06 00:13:39,240 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 357.2ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:13:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12663 states. [2021-06-06 00:13:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12663 to 6788. [2021-06-06 00:13:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6788 states, 6787 states have (on average 3.7501105053779282) internal successors, (25452), 6787 states have internal predecessors, (25452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 25452 transitions. [2021-06-06 00:13:39,401 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 25452 transitions. Word has length 28 [2021-06-06 00:13:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:39,401 INFO L482 AbstractCegarLoop]: Abstraction has 6788 states and 25452 transitions. [2021-06-06 00:13:39,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 25452 transitions. [2021-06-06 00:13:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:39,410 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:39,410 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:39,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3929 [2021-06-06 00:13:39,611 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:39,611 INFO L82 PathProgramCache]: Analyzing trace with hash 891821389, now seen corresponding path program 81 times [2021-06-06 00:13:39,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:39,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57643721] [2021-06-06 00:13:39,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:39,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:39,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57643721] [2021-06-06 00:13:39,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57643721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:39,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161751508] [2021-06-06 00:13:39,643 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 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:39,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:13:39,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:39,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:39,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:39,718 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:39,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161751508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:39,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:39,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:13:39,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489452730] [2021-06-06 00:13:39,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:13:39,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:39,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:13:39,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:13:39,719 INFO L87 Difference]: Start difference. First operand 6788 states and 25452 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:40,270 INFO L93 Difference]: Finished difference Result 12824 states and 44637 transitions. [2021-06-06 00:13:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:13:40,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:40,290 INFO L225 Difference]: With dead ends: 12824 [2021-06-06 00:13:40,290 INFO L226 Difference]: Without dead ends: 12824 [2021-06-06 00:13:40,291 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 306.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:13:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12824 states. [2021-06-06 00:13:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12824 to 7036. [2021-06-06 00:13:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 7035 states have (on average 3.729637526652452) internal successors, (26238), 7035 states have internal predecessors, (26238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 26238 transitions. [2021-06-06 00:13:40,469 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 26238 transitions. Word has length 28 [2021-06-06 00:13:40,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:40,469 INFO L482 AbstractCegarLoop]: Abstraction has 7036 states and 26238 transitions. [2021-06-06 00:13:40,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 26238 transitions. [2021-06-06 00:13:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:40,478 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:40,478 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:40,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3930,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:40,678 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:40,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1279876851, now seen corresponding path program 82 times [2021-06-06 00:13:40,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:40,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492898539] [2021-06-06 00:13:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:40,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:40,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492898539] [2021-06-06 00:13:40,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492898539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:40,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063902555] [2021-06-06 00:13:40,702 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 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:40,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:40,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:40,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:40,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:40,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063902555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:40,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:40,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:13:40,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948721496] [2021-06-06 00:13:40,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:13:40,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:40,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:13:40,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:13:40,774 INFO L87 Difference]: Start difference. First operand 7036 states and 26238 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:41,082 INFO L93 Difference]: Finished difference Result 10405 states and 36941 transitions. [2021-06-06 00:13:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:13:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:41,097 INFO L225 Difference]: With dead ends: 10405 [2021-06-06 00:13:41,097 INFO L226 Difference]: Without dead ends: 10405 [2021-06-06 00:13:41,097 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:13:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2021-06-06 00:13:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 7946. [2021-06-06 00:13:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7946 states, 7945 states have (on average 3.7539332913782255) internal successors, (29825), 7945 states have internal predecessors, (29825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 29825 transitions. [2021-06-06 00:13:41,227 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 29825 transitions. Word has length 28 [2021-06-06 00:13:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:41,227 INFO L482 AbstractCegarLoop]: Abstraction has 7946 states and 29825 transitions. [2021-06-06 00:13:41,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 29825 transitions. [2021-06-06 00:13:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:41,237 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:41,237 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:41,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3931,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:41,437 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 847000247, now seen corresponding path program 83 times [2021-06-06 00:13:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:41,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338960458] [2021-06-06 00:13:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:41,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:41,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338960458] [2021-06-06 00:13:41,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338960458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:41,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504085263] [2021-06-06 00:13:41,466 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 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:41,487 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:13:41,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:41,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:41,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:41,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504085263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:41,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:41,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:13:41,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974814758] [2021-06-06 00:13:41,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:13:41,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:41,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:13:41,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:13:41,535 INFO L87 Difference]: Start difference. First operand 7946 states and 29825 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:42,072 INFO L93 Difference]: Finished difference Result 13522 states and 48006 transitions. [2021-06-06 00:13:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:13:42,072 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:42,092 INFO L225 Difference]: With dead ends: 13522 [2021-06-06 00:13:42,092 INFO L226 Difference]: Without dead ends: 13518 [2021-06-06 00:13:42,093 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 266.6ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:13:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13518 states. [2021-06-06 00:13:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13518 to 7858. [2021-06-06 00:13:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7858 states, 7857 states have (on average 3.7557591956217387) internal successors, (29509), 7857 states have internal predecessors, (29509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7858 states to 7858 states and 29509 transitions. [2021-06-06 00:13:42,246 INFO L78 Accepts]: Start accepts. Automaton has 7858 states and 29509 transitions. Word has length 28 [2021-06-06 00:13:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:42,247 INFO L482 AbstractCegarLoop]: Abstraction has 7858 states and 29509 transitions. [2021-06-06 00:13:42,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 7858 states and 29509 transitions. [2021-06-06 00:13:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:42,257 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:42,257 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:42,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3932 [2021-06-06 00:13:42,458 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -48820569, now seen corresponding path program 84 times [2021-06-06 00:13:42,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:42,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002037734] [2021-06-06 00:13:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:42,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:42,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002037734] [2021-06-06 00:13:42,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002037734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:42,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818001681] [2021-06-06 00:13:42,488 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 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:42,519 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:13:42,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:42,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:42,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:42,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818001681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:42,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:42,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:13:42,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471509059] [2021-06-06 00:13:42,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:13:42,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:42,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:13:42,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:13:42,572 INFO L87 Difference]: Start difference. First operand 7858 states and 29509 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:42,949 INFO L93 Difference]: Finished difference Result 10648 states and 37827 transitions. [2021-06-06 00:13:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:13:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:42,965 INFO L225 Difference]: With dead ends: 10648 [2021-06-06 00:13:42,965 INFO L226 Difference]: Without dead ends: 10648 [2021-06-06 00:13:42,965 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 195.7ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:13:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10648 states. [2021-06-06 00:13:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10648 to 7756. [2021-06-06 00:13:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7756 states, 7755 states have (on average 3.752675693101225) internal successors, (29102), 7755 states have internal predecessors, (29102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 29102 transitions. [2021-06-06 00:13:43,094 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 29102 transitions. Word has length 28 [2021-06-06 00:13:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:43,094 INFO L482 AbstractCegarLoop]: Abstraction has 7756 states and 29102 transitions. [2021-06-06 00:13:43,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 29102 transitions. [2021-06-06 00:13:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:43,104 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:43,104 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:43,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3933,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:43,304 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1444336905, now seen corresponding path program 85 times [2021-06-06 00:13:43,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:43,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903881255] [2021-06-06 00:13:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:43,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:43,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903881255] [2021-06-06 00:13:43,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903881255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:43,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913389447] [2021-06-06 00:13:43,338 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 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:43,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:43,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:43,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913389447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:43,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:43,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:13:43,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045230644] [2021-06-06 00:13:43,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:13:43,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:43,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:13:43,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:13:43,407 INFO L87 Difference]: Start difference. First operand 7756 states and 29102 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:43,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:43,983 INFO L93 Difference]: Finished difference Result 13360 states and 47364 transitions. [2021-06-06 00:13:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:13:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:44,005 INFO L225 Difference]: With dead ends: 13360 [2021-06-06 00:13:44,005 INFO L226 Difference]: Without dead ends: 13348 [2021-06-06 00:13:44,005 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 306.5ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:13:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13348 states. [2021-06-06 00:13:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13348 to 7756. [2021-06-06 00:13:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7756 states, 7755 states have (on average 3.7513862024500324) internal successors, (29092), 7755 states have internal predecessors, (29092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 29092 transitions. [2021-06-06 00:13:44,162 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 29092 transitions. Word has length 28 [2021-06-06 00:13:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:44,162 INFO L482 AbstractCegarLoop]: Abstraction has 7756 states and 29092 transitions. [2021-06-06 00:13:44,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 29092 transitions. [2021-06-06 00:13:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:44,172 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:44,172 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:44,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3934 [2021-06-06 00:13:44,372 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:44,373 INFO L82 PathProgramCache]: Analyzing trace with hash -323944011, now seen corresponding path program 86 times [2021-06-06 00:13:44,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:44,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27678137] [2021-06-06 00:13:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:44,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:44,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27678137] [2021-06-06 00:13:44,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27678137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:44,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150837888] [2021-06-06 00:13:44,407 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 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:44,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:44,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:44,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:44,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:44,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150837888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:44,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:44,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:13:44,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430940898] [2021-06-06 00:13:44,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:44,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:44,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:44,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:44,489 INFO L87 Difference]: Start difference. First operand 7756 states and 29092 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:45,517 INFO L93 Difference]: Finished difference Result 20318 states and 70854 transitions. [2021-06-06 00:13:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-06 00:13:45,518 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:45,555 INFO L225 Difference]: With dead ends: 20318 [2021-06-06 00:13:45,555 INFO L226 Difference]: Without dead ends: 20318 [2021-06-06 00:13:45,555 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 606.4ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:13:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20318 states. [2021-06-06 00:13:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20318 to 10596. [2021-06-06 00:13:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10596 states, 10595 states have (on average 3.79443133553563) internal successors, (40202), 10595 states have internal predecessors, (40202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:45,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10596 states to 10596 states and 40202 transitions. [2021-06-06 00:13:45,829 INFO L78 Accepts]: Start accepts. Automaton has 10596 states and 40202 transitions. Word has length 28 [2021-06-06 00:13:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:45,829 INFO L482 AbstractCegarLoop]: Abstraction has 10596 states and 40202 transitions. [2021-06-06 00:13:45,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10596 states and 40202 transitions. [2021-06-06 00:13:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:45,843 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:45,843 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:46,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3935 [2021-06-06 00:13:46,044 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:46,044 INFO L82 PathProgramCache]: Analyzing trace with hash -242567923, now seen corresponding path program 87 times [2021-06-06 00:13:46,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:46,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871260584] [2021-06-06 00:13:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:46,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:46,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871260584] [2021-06-06 00:13:46,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871260584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:46,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110472080] [2021-06-06 00:13:46,078 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 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:46,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:13:46,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:46,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:46,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:46,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110472080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:46,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:46,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:13:46,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893634830] [2021-06-06 00:13:46,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:46,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:46,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:46,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:46,173 INFO L87 Difference]: Start difference. First operand 10596 states and 40202 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:47,090 INFO L93 Difference]: Finished difference Result 19544 states and 68833 transitions. [2021-06-06 00:13:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:13:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:47,123 INFO L225 Difference]: With dead ends: 19544 [2021-06-06 00:13:47,123 INFO L226 Difference]: Without dead ends: 19532 [2021-06-06 00:13:47,124 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 542.9ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:13:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19532 states. [2021-06-06 00:13:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19532 to 10410. [2021-06-06 00:13:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10410 states, 10409 states have (on average 3.8004611393985974) internal successors, (39559), 10409 states have internal predecessors, (39559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 39559 transitions. [2021-06-06 00:13:47,387 INFO L78 Accepts]: Start accepts. Automaton has 10410 states and 39559 transitions. Word has length 28 [2021-06-06 00:13:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:47,387 INFO L482 AbstractCegarLoop]: Abstraction has 10410 states and 39559 transitions. [2021-06-06 00:13:47,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states and 39559 transitions. [2021-06-06 00:13:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:47,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:47,401 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:47,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3936 [2021-06-06 00:13:47,601 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1757659895, now seen corresponding path program 88 times [2021-06-06 00:13:47,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:47,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110167519] [2021-06-06 00:13:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:47,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:47,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110167519] [2021-06-06 00:13:47,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110167519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:47,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108455425] [2021-06-06 00:13:47,636 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 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:47,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:47,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:47,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:47,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:47,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108455425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:47,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:47,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:13:47,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665784971] [2021-06-06 00:13:47,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:13:47,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:47,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:13:47,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:13:47,712 INFO L87 Difference]: Start difference. First operand 10410 states and 39559 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:48,542 INFO L93 Difference]: Finished difference Result 19373 states and 68230 transitions. [2021-06-06 00:13:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:13:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:48,624 INFO L225 Difference]: With dead ends: 19373 [2021-06-06 00:13:48,624 INFO L226 Difference]: Without dead ends: 19337 [2021-06-06 00:13:48,625 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 480.5ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:13:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19337 states. [2021-06-06 00:13:48,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19337 to 10460. [2021-06-06 00:13:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 10459 states have (on average 3.798451094750932) internal successors, (39728), 10459 states have internal predecessors, (39728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 39728 transitions. [2021-06-06 00:13:48,853 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 39728 transitions. Word has length 28 [2021-06-06 00:13:48,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:48,853 INFO L482 AbstractCegarLoop]: Abstraction has 10460 states and 39728 transitions. [2021-06-06 00:13:48,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 39728 transitions. [2021-06-06 00:13:48,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:48,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:48,867 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:49,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3937,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:49,068 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:49,068 INFO L82 PathProgramCache]: Analyzing trace with hash -160533179, now seen corresponding path program 89 times [2021-06-06 00:13:49,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:49,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503366958] [2021-06-06 00:13:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:49,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:49,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503366958] [2021-06-06 00:13:49,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503366958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:49,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921937669] [2021-06-06 00:13:49,103 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 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:49,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:13:49,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:49,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:49,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:49,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921937669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:49,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:49,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:13:49,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533938327] [2021-06-06 00:13:49,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:49,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:49,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:49,203 INFO L87 Difference]: Start difference. First operand 10460 states and 39728 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:50,424 INFO L93 Difference]: Finished difference Result 19259 states and 67953 transitions. [2021-06-06 00:13:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-06 00:13:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:50,458 INFO L225 Difference]: With dead ends: 19259 [2021-06-06 00:13:50,459 INFO L226 Difference]: Without dead ends: 19259 [2021-06-06 00:13:50,459 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2647 ImplicationChecksByTransitivity, 743.4ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:13:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19259 states. [2021-06-06 00:13:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19259 to 10656. [2021-06-06 00:13:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10656 states, 10655 states have (on average 3.7895823557015484) internal successors, (40378), 10655 states have internal predecessors, (40378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10656 states to 10656 states and 40378 transitions. [2021-06-06 00:13:50,694 INFO L78 Accepts]: Start accepts. Automaton has 10656 states and 40378 transitions. Word has length 28 [2021-06-06 00:13:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:50,694 INFO L482 AbstractCegarLoop]: Abstraction has 10656 states and 40378 transitions. [2021-06-06 00:13:50,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 10656 states and 40378 transitions. [2021-06-06 00:13:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:50,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:50,709 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:50,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3938 [2021-06-06 00:13:50,909 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1482505975, now seen corresponding path program 90 times [2021-06-06 00:13:50,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:50,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964507472] [2021-06-06 00:13:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:50,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:50,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964507472] [2021-06-06 00:13:50,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964507472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:50,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117891081] [2021-06-06 00:13:50,944 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 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:50,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 00:13:50,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:50,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:50,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:51,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117891081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:51,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:51,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:13:51,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145781321] [2021-06-06 00:13:51,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:51,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:51,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:51,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:51,041 INFO L87 Difference]: Start difference. First operand 10656 states and 40378 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:52,114 INFO L93 Difference]: Finished difference Result 18895 states and 66950 transitions. [2021-06-06 00:13:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:13:52,115 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:52,147 INFO L225 Difference]: With dead ends: 18895 [2021-06-06 00:13:52,148 INFO L226 Difference]: Without dead ends: 18883 [2021-06-06 00:13:52,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 633.8ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:13:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18883 states. [2021-06-06 00:13:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18883 to 10538. [2021-06-06 00:13:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10538 states, 10537 states have (on average 3.793964126411692) internal successors, (39977), 10537 states have internal predecessors, (39977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10538 states to 10538 states and 39977 transitions. [2021-06-06 00:13:52,430 INFO L78 Accepts]: Start accepts. Automaton has 10538 states and 39977 transitions. Word has length 28 [2021-06-06 00:13:52,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:52,430 INFO L482 AbstractCegarLoop]: Abstraction has 10538 states and 39977 transitions. [2021-06-06 00:13:52,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 10538 states and 39977 transitions. [2021-06-06 00:13:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:52,445 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:52,445 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:52,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3939,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:52,649 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:52,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:52,649 INFO L82 PathProgramCache]: Analyzing trace with hash 215048797, now seen corresponding path program 91 times [2021-06-06 00:13:52,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:52,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886245933] [2021-06-06 00:13:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:52,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:52,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886245933] [2021-06-06 00:13:52,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886245933] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:52,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557962380] [2021-06-06 00:13:52,683 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 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:52,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:52,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557962380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:52,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:52,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:13:52,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289374502] [2021-06-06 00:13:52,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:52,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:52,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:52,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:52,767 INFO L87 Difference]: Start difference. First operand 10538 states and 39977 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:53,610 INFO L93 Difference]: Finished difference Result 18135 states and 64866 transitions. [2021-06-06 00:13:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:13:53,611 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:53,641 INFO L225 Difference]: With dead ends: 18135 [2021-06-06 00:13:53,641 INFO L226 Difference]: Without dead ends: 18099 [2021-06-06 00:13:53,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 503.5ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:13:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18099 states. [2021-06-06 00:13:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18099 to 10562. [2021-06-06 00:13:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10562 states, 10561 states have (on average 3.7929173373733547) internal successors, (40057), 10561 states have internal predecessors, (40057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10562 states to 10562 states and 40057 transitions. [2021-06-06 00:13:53,934 INFO L78 Accepts]: Start accepts. Automaton has 10562 states and 40057 transitions. Word has length 28 [2021-06-06 00:13:53,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:53,934 INFO L482 AbstractCegarLoop]: Abstraction has 10562 states and 40057 transitions. [2021-06-06 00:13:53,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 10562 states and 40057 transitions. [2021-06-06 00:13:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:53,947 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:53,947 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:54,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3940,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:54,147 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:54,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1691162673, now seen corresponding path program 92 times [2021-06-06 00:13:54,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:54,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458805009] [2021-06-06 00:13:54,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:54,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:54,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:54,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458805009] [2021-06-06 00:13:54,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458805009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:54,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746068435] [2021-06-06 00:13:54,177 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 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:54,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:54,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:54,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:54,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:54,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746068435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:54,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:54,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:13:54,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709986818] [2021-06-06 00:13:54,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:54,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:54,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:54,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:54,285 INFO L87 Difference]: Start difference. First operand 10562 states and 40057 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:55,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:55,368 INFO L93 Difference]: Finished difference Result 26263 states and 93462 transitions. [2021-06-06 00:13:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-06 00:13:55,368 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:55,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:55,418 INFO L225 Difference]: With dead ends: 26263 [2021-06-06 00:13:55,418 INFO L226 Difference]: Without dead ends: 26263 [2021-06-06 00:13:55,418 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 647.1ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-06 00:13:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26263 states. [2021-06-06 00:13:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26263 to 10852. [2021-06-06 00:13:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10852 states, 10851 states have (on average 3.818173440235923) internal successors, (41431), 10851 states have internal predecessors, (41431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:55,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10852 states to 10852 states and 41431 transitions. [2021-06-06 00:13:55,726 INFO L78 Accepts]: Start accepts. Automaton has 10852 states and 41431 transitions. Word has length 28 [2021-06-06 00:13:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:55,726 INFO L482 AbstractCegarLoop]: Abstraction has 10852 states and 41431 transitions. [2021-06-06 00:13:55,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:55,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10852 states and 41431 transitions. [2021-06-06 00:13:55,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:55,741 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:55,741 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:55,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3941 [2021-06-06 00:13:55,942 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:55,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2036852543, now seen corresponding path program 93 times [2021-06-06 00:13:55,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:55,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389544710] [2021-06-06 00:13:55,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:55,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:55,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389544710] [2021-06-06 00:13:55,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389544710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:55,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95200277] [2021-06-06 00:13:55,972 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 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:56,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:13:56,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:56,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:56,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:56,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95200277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:56,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:56,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:13:56,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282625404] [2021-06-06 00:13:56,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:56,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:56,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:56,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:56,135 INFO L87 Difference]: Start difference. First operand 10852 states and 41431 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:57,254 INFO L93 Difference]: Finished difference Result 25703 states and 92092 transitions. [2021-06-06 00:13:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-06 00:13:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:57,303 INFO L225 Difference]: With dead ends: 25703 [2021-06-06 00:13:57,303 INFO L226 Difference]: Without dead ends: 25703 [2021-06-06 00:13:57,304 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 654.2ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:13:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25703 states. [2021-06-06 00:13:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25703 to 10754. [2021-06-06 00:13:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10754 states, 10753 states have (on average 3.8055426392634613) internal successors, (40921), 10753 states have internal predecessors, (40921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10754 states to 10754 states and 40921 transitions. [2021-06-06 00:13:57,602 INFO L78 Accepts]: Start accepts. Automaton has 10754 states and 40921 transitions. Word has length 28 [2021-06-06 00:13:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:57,602 INFO L482 AbstractCegarLoop]: Abstraction has 10754 states and 40921 transitions. [2021-06-06 00:13:57,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 10754 states and 40921 transitions. [2021-06-06 00:13:57,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:57,617 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:57,617 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:57,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3942,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:57,818 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:57,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:57,818 INFO L82 PathProgramCache]: Analyzing trace with hash 197254951, now seen corresponding path program 94 times [2021-06-06 00:13:57,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:57,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24277977] [2021-06-06 00:13:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:13:57,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:57,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24277977] [2021-06-06 00:13:57,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24277977] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:57,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105354935] [2021-06-06 00:13:57,848 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 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:57,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:57,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:57,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:13:57,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:57,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105354935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:57,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:57,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:13:57,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690702134] [2021-06-06 00:13:57,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:13:57,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:57,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:13:57,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:13:57,947 INFO L87 Difference]: Start difference. First operand 10754 states and 40921 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:58,705 INFO L93 Difference]: Finished difference Result 20426 states and 73440 transitions. [2021-06-06 00:13:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:13:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:58,741 INFO L225 Difference]: With dead ends: 20426 [2021-06-06 00:13:58,741 INFO L226 Difference]: Without dead ends: 20426 [2021-06-06 00:13:58,741 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 441.3ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:13:58,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20426 states. [2021-06-06 00:13:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20426 to 10763. [2021-06-06 00:13:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10763 states, 10762 states have (on average 3.804497305333581) internal successors, (40944), 10762 states have internal predecessors, (40944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:58,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10763 states to 10763 states and 40944 transitions. [2021-06-06 00:13:58,977 INFO L78 Accepts]: Start accepts. Automaton has 10763 states and 40944 transitions. Word has length 28 [2021-06-06 00:13:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:58,977 INFO L482 AbstractCegarLoop]: Abstraction has 10763 states and 40944 transitions. [2021-06-06 00:13:58,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 10763 states and 40944 transitions. [2021-06-06 00:13:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:58,991 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:58,991 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:13:59,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3943,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:59,192 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash -31074195, now seen corresponding path program 95 times [2021-06-06 00:13:59,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:59,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867872614] [2021-06-06 00:13:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:59,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:59,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867872614] [2021-06-06 00:13:59,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867872614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:59,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375898868] [2021-06-06 00:13:59,215 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 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:59,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:13:59,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:59,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:13:59,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:13:59,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375898868] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:59,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:59,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:13:59,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386503045] [2021-06-06 00:13:59,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:13:59,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:59,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:13:59,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:13:59,285 INFO L87 Difference]: Start difference. First operand 10763 states and 40944 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:59,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:59,595 INFO L93 Difference]: Finished difference Result 12782 states and 46713 transitions. [2021-06-06 00:13:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:13:59,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:13:59,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:59,618 INFO L225 Difference]: With dead ends: 12782 [2021-06-06 00:13:59,618 INFO L226 Difference]: Without dead ends: 12749 [2021-06-06 00:13:59,618 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:13:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12749 states. [2021-06-06 00:13:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12749 to 10707. [2021-06-06 00:13:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10707 states, 10706 states have (on average 3.8048757705959275) internal successors, (40735), 10706 states have internal predecessors, (40735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10707 states to 10707 states and 40735 transitions. [2021-06-06 00:13:59,804 INFO L78 Accepts]: Start accepts. Automaton has 10707 states and 40735 transitions. Word has length 28 [2021-06-06 00:13:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:59,804 INFO L482 AbstractCegarLoop]: Abstraction has 10707 states and 40735 transitions. [2021-06-06 00:13:59,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 10707 states and 40735 transitions. [2021-06-06 00:13:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:13:59,819 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:59,819 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:00,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3944 [2021-06-06 00:14:00,019 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:00,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:00,019 INFO L82 PathProgramCache]: Analyzing trace with hash -477466927, now seen corresponding path program 96 times [2021-06-06 00:14:00,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:00,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750050554] [2021-06-06 00:14:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:00,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:00,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750050554] [2021-06-06 00:14:00,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750050554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:00,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631004752] [2021-06-06 00:14:00,049 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 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:00,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:14:00,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:00,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:00,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:00,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631004752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:00,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:00,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:14:00,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144334150] [2021-06-06 00:14:00,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:14:00,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:00,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:14:00,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:14:00,220 INFO L87 Difference]: Start difference. First operand 10707 states and 40735 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:00,912 INFO L93 Difference]: Finished difference Result 18923 states and 68585 transitions. [2021-06-06 00:14:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:14:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:00,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:00,947 INFO L225 Difference]: With dead ends: 18923 [2021-06-06 00:14:00,947 INFO L226 Difference]: Without dead ends: 18923 [2021-06-06 00:14:00,947 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 388.7ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:14:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18923 states. [2021-06-06 00:14:01,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18923 to 10719. [2021-06-06 00:14:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10718 states have (on average 3.8041612241089755) internal successors, (40773), 10718 states have internal predecessors, (40773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 40773 transitions. [2021-06-06 00:14:01,212 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 40773 transitions. Word has length 28 [2021-06-06 00:14:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:01,212 INFO L482 AbstractCegarLoop]: Abstraction has 10719 states and 40773 transitions. [2021-06-06 00:14:01,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 40773 transitions. [2021-06-06 00:14:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:01,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:01,226 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:01,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3945,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:01,427 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1175893249, now seen corresponding path program 97 times [2021-06-06 00:14:01,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:01,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607558564] [2021-06-06 00:14:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:01,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:01,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607558564] [2021-06-06 00:14:01,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607558564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:01,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293828691] [2021-06-06 00:14:01,457 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 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:01,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:01,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:01,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293828691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:01,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:01,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:14:01,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492792035] [2021-06-06 00:14:01,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:01,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:01,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:01,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:01,564 INFO L87 Difference]: Start difference. First operand 10719 states and 40773 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:02,488 INFO L93 Difference]: Finished difference Result 19527 states and 70320 transitions. [2021-06-06 00:14:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-06 00:14:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:02,524 INFO L225 Difference]: With dead ends: 19527 [2021-06-06 00:14:02,524 INFO L226 Difference]: Without dead ends: 19527 [2021-06-06 00:14:02,525 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 581.4ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-06 00:14:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19527 states. [2021-06-06 00:14:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19527 to 10827. [2021-06-06 00:14:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10827 states, 10826 states have (on average 3.797062627009052) internal successors, (41107), 10826 states have internal predecessors, (41107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10827 states to 10827 states and 41107 transitions. [2021-06-06 00:14:02,825 INFO L78 Accepts]: Start accepts. Automaton has 10827 states and 41107 transitions. Word has length 28 [2021-06-06 00:14:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:02,825 INFO L482 AbstractCegarLoop]: Abstraction has 10827 states and 41107 transitions. [2021-06-06 00:14:02,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:02,825 INFO L276 IsEmpty]: Start isEmpty. Operand 10827 states and 41107 transitions. [2021-06-06 00:14:02,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:02,840 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:02,840 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:03,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3946 [2021-06-06 00:14:03,042 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:03,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1476034893, now seen corresponding path program 98 times [2021-06-06 00:14:03,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:03,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592805059] [2021-06-06 00:14:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:03,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:03,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592805059] [2021-06-06 00:14:03,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592805059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:03,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746061008] [2021-06-06 00:14:03,071 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 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:03,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:03,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:03,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:03,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:03,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746061008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:03,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:03,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:14:03,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128350079] [2021-06-06 00:14:03,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:03,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:03,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:03,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:03,172 INFO L87 Difference]: Start difference. First operand 10827 states and 41107 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:03,962 INFO L93 Difference]: Finished difference Result 19102 states and 69164 transitions. [2021-06-06 00:14:03,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:14:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:03,995 INFO L225 Difference]: With dead ends: 19102 [2021-06-06 00:14:03,995 INFO L226 Difference]: Without dead ends: 19098 [2021-06-06 00:14:03,996 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 486.5ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:14:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19098 states. [2021-06-06 00:14:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19098 to 10753. [2021-06-06 00:14:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10753 states, 10752 states have (on average 3.800967261904762) internal successors, (40868), 10752 states have internal predecessors, (40868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10753 states to 10753 states and 40868 transitions. [2021-06-06 00:14:04,234 INFO L78 Accepts]: Start accepts. Automaton has 10753 states and 40868 transitions. Word has length 28 [2021-06-06 00:14:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:04,234 INFO L482 AbstractCegarLoop]: Abstraction has 10753 states and 40868 transitions. [2021-06-06 00:14:04,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 10753 states and 40868 transitions. [2021-06-06 00:14:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:04,249 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:04,249 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:04,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3947 [2021-06-06 00:14:04,449 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash 729404223, now seen corresponding path program 99 times [2021-06-06 00:14:04,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:04,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243854350] [2021-06-06 00:14:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:04,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:04,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243854350] [2021-06-06 00:14:04,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243854350] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:04,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786736890] [2021-06-06 00:14:04,484 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 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:04,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:14:04,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:04,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:04,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:04,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786736890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:04,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:04,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:14:04,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971836277] [2021-06-06 00:14:04,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:04,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:04,587 INFO L87 Difference]: Start difference. First operand 10753 states and 40868 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:05,540 INFO L93 Difference]: Finished difference Result 18533 states and 66656 transitions. [2021-06-06 00:14:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:14:05,540 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:05,571 INFO L225 Difference]: With dead ends: 18533 [2021-06-06 00:14:05,571 INFO L226 Difference]: Without dead ends: 18533 [2021-06-06 00:14:05,571 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 565.0ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:14:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18533 states. [2021-06-06 00:14:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18533 to 10980. [2021-06-06 00:14:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10980 states, 10979 states have (on average 3.8041716003278987) internal successors, (41766), 10979 states have internal predecessors, (41766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 41766 transitions. [2021-06-06 00:14:05,805 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 41766 transitions. Word has length 28 [2021-06-06 00:14:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:05,805 INFO L482 AbstractCegarLoop]: Abstraction has 10980 states and 41766 transitions. [2021-06-06 00:14:05,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 41766 transitions. [2021-06-06 00:14:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:05,820 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:05,820 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:06,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3948 [2021-06-06 00:14:06,020 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:06,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1909723903, now seen corresponding path program 100 times [2021-06-06 00:14:06,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:06,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165774914] [2021-06-06 00:14:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:06,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:06,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165774914] [2021-06-06 00:14:06,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165774914] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:06,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385783957] [2021-06-06 00:14:06,057 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 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:06,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:06,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:06,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385783957] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:06,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:06,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:14:06,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252888817] [2021-06-06 00:14:06,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:06,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:06,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:06,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:06,150 INFO L87 Difference]: Start difference. First operand 10980 states and 41766 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:06,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:06,963 INFO L93 Difference]: Finished difference Result 18246 states and 65858 transitions. [2021-06-06 00:14:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:14:06,964 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:06,995 INFO L225 Difference]: With dead ends: 18246 [2021-06-06 00:14:06,995 INFO L226 Difference]: Without dead ends: 18234 [2021-06-06 00:14:06,996 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:14:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18234 states. [2021-06-06 00:14:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18234 to 11082. [2021-06-06 00:14:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11082 states, 11081 states have (on average 3.798303402220016) internal successors, (42089), 11081 states have internal predecessors, (42089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11082 states to 11082 states and 42089 transitions. [2021-06-06 00:14:07,234 INFO L78 Accepts]: Start accepts. Automaton has 11082 states and 42089 transitions. Word has length 28 [2021-06-06 00:14:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:07,234 INFO L482 AbstractCegarLoop]: Abstraction has 11082 states and 42089 transitions. [2021-06-06 00:14:07,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 11082 states and 42089 transitions. [2021-06-06 00:14:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:07,249 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:07,249 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:07,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3949,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:07,449 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1714650925, now seen corresponding path program 72 times [2021-06-06 00:14:07,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:07,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960806348] [2021-06-06 00:14:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:07,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:07,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960806348] [2021-06-06 00:14:07,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960806348] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:07,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627172974] [2021-06-06 00:14:07,486 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 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:07,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:14:07,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:07,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:07,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:07,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627172974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:07,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:07,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:14:07,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935049094] [2021-06-06 00:14:07,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:07,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:07,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:07,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:07,562 INFO L87 Difference]: Start difference. First operand 11082 states and 42089 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:07,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:07,982 INFO L93 Difference]: Finished difference Result 15733 states and 58180 transitions. [2021-06-06 00:14:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:14:07,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:08,009 INFO L225 Difference]: With dead ends: 15733 [2021-06-06 00:14:08,009 INFO L226 Difference]: Without dead ends: 15733 [2021-06-06 00:14:08,009 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 212.8ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:14:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15733 states. [2021-06-06 00:14:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15733 to 11154. [2021-06-06 00:14:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11154 states, 11153 states have (on average 3.7938671209540034) internal successors, (42313), 11153 states have internal predecessors, (42313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11154 states to 11154 states and 42313 transitions. [2021-06-06 00:14:08,216 INFO L78 Accepts]: Start accepts. Automaton has 11154 states and 42313 transitions. Word has length 28 [2021-06-06 00:14:08,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:08,216 INFO L482 AbstractCegarLoop]: Abstraction has 11154 states and 42313 transitions. [2021-06-06 00:14:08,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:08,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11154 states and 42313 transitions. [2021-06-06 00:14:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:08,231 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:08,231 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:08,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3950,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:08,432 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash -55855667, now seen corresponding path program 73 times [2021-06-06 00:14:08,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:08,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551375711] [2021-06-06 00:14:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:08,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:08,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551375711] [2021-06-06 00:14:08,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551375711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:08,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255927466] [2021-06-06 00:14:08,461 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 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:08,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:08,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:08,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255927466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:08,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:08,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:14:08,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350814525] [2021-06-06 00:14:08,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:14:08,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:08,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:14:08,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:14:08,535 INFO L87 Difference]: Start difference. First operand 11154 states and 42313 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:08,960 INFO L93 Difference]: Finished difference Result 16710 states and 61024 transitions. [2021-06-06 00:14:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:14:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:08,991 INFO L225 Difference]: With dead ends: 16710 [2021-06-06 00:14:08,991 INFO L226 Difference]: Without dead ends: 16710 [2021-06-06 00:14:08,991 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 245.0ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:14:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16710 states. [2021-06-06 00:14:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16710 to 11484. [2021-06-06 00:14:09,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11484 states, 11483 states have (on average 3.7768875729339024) internal successors, (43370), 11483 states have internal predecessors, (43370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 43370 transitions. [2021-06-06 00:14:09,218 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 43370 transitions. Word has length 28 [2021-06-06 00:14:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:09,218 INFO L482 AbstractCegarLoop]: Abstraction has 11484 states and 43370 transitions. [2021-06-06 00:14:09,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 43370 transitions. [2021-06-06 00:14:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:09,234 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:09,234 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:09,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3951,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:09,434 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:09,435 INFO L82 PathProgramCache]: Analyzing trace with hash -100676809, now seen corresponding path program 74 times [2021-06-06 00:14:09,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:09,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003265714] [2021-06-06 00:14:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:09,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:09,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003265714] [2021-06-06 00:14:09,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003265714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:09,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691883782] [2021-06-06 00:14:09,464 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 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:09,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:09,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:09,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:09,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:09,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691883782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:09,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:09,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:14:09,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594241096] [2021-06-06 00:14:09,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:14:09,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:09,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:14:09,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:14:09,532 INFO L87 Difference]: Start difference. First operand 11484 states and 43370 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:09,893 INFO L93 Difference]: Finished difference Result 16200 states and 59687 transitions. [2021-06-06 00:14:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:14:09,894 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:09,922 INFO L225 Difference]: With dead ends: 16200 [2021-06-06 00:14:09,922 INFO L226 Difference]: Without dead ends: 16192 [2021-06-06 00:14:09,922 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 189.4ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:14:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2021-06-06 00:14:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 11424. [2021-06-06 00:14:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11424 states, 11423 states have (on average 3.7788671977589074) internal successors, (43166), 11423 states have internal predecessors, (43166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11424 states to 11424 states and 43166 transitions. [2021-06-06 00:14:10,202 INFO L78 Accepts]: Start accepts. Automaton has 11424 states and 43166 transitions. Word has length 28 [2021-06-06 00:14:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:10,202 INFO L482 AbstractCegarLoop]: Abstraction has 11424 states and 43166 transitions. [2021-06-06 00:14:10,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11424 states and 43166 transitions. [2021-06-06 00:14:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:10,219 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:10,219 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:10,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3952,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:10,420 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash 496659849, now seen corresponding path program 75 times [2021-06-06 00:14:10,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:10,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890421693] [2021-06-06 00:14:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:10,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:10,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890421693] [2021-06-06 00:14:10,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890421693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:10,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351668146] [2021-06-06 00:14:10,457 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 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:10,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:14:10,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:10,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:10,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:10,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351668146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:10,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:10,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:14:10,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99223836] [2021-06-06 00:14:10,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:10,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:10,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:10,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:10,534 INFO L87 Difference]: Start difference. First operand 11424 states and 43166 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:10,958 INFO L93 Difference]: Finished difference Result 16100 states and 59399 transitions. [2021-06-06 00:14:10,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:14:10,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:10,988 INFO L225 Difference]: With dead ends: 16100 [2021-06-06 00:14:10,988 INFO L226 Difference]: Without dead ends: 16088 [2021-06-06 00:14:10,988 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 220.6ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:14:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16088 states. [2021-06-06 00:14:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16088 to 11406. [2021-06-06 00:14:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11406 states, 11405 states have (on average 3.779307321350285) internal successors, (43103), 11405 states have internal predecessors, (43103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11406 states to 11406 states and 43103 transitions. [2021-06-06 00:14:11,219 INFO L78 Accepts]: Start accepts. Automaton has 11406 states and 43103 transitions. Word has length 28 [2021-06-06 00:14:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:11,219 INFO L482 AbstractCegarLoop]: Abstraction has 11406 states and 43103 transitions. [2021-06-06 00:14:11,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11406 states and 43103 transitions. [2021-06-06 00:14:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:11,233 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:11,234 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:11,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3953 [2021-06-06 00:14:11,434 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash -158749623, now seen corresponding path program 76 times [2021-06-06 00:14:11,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:11,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899103900] [2021-06-06 00:14:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:11,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:11,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899103900] [2021-06-06 00:14:11,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899103900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:11,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516429157] [2021-06-06 00:14:11,464 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 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:11,491 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:11,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:11,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:11,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:11,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516429157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:11,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:11,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:14:11,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35686351] [2021-06-06 00:14:11,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:14:11,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:11,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:14:11,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:14:11,569 INFO L87 Difference]: Start difference. First operand 11406 states and 43103 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:12,361 INFO L93 Difference]: Finished difference Result 21916 states and 78065 transitions. [2021-06-06 00:14:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:14:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:12,398 INFO L225 Difference]: With dead ends: 21916 [2021-06-06 00:14:12,399 INFO L226 Difference]: Without dead ends: 21916 [2021-06-06 00:14:12,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 432.7ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:14:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21916 states. [2021-06-06 00:14:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21916 to 11388. [2021-06-06 00:14:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11387 states have (on average 3.7779924475278825) internal successors, (43020), 11387 states have internal predecessors, (43020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 43020 transitions. [2021-06-06 00:14:12,641 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 43020 transitions. Word has length 28 [2021-06-06 00:14:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:12,641 INFO L482 AbstractCegarLoop]: Abstraction has 11388 states and 43020 transitions. [2021-06-06 00:14:12,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 43020 transitions. [2021-06-06 00:14:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:12,657 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:12,657 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:12,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3954,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:12,857 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:12,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1660375731, now seen corresponding path program 101 times [2021-06-06 00:14:12,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:12,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365205785] [2021-06-06 00:14:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:12,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:12,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365205785] [2021-06-06 00:14:12,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365205785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:12,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866080711] [2021-06-06 00:14:12,880 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 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:12,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:14:12,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:12,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:12,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:12,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866080711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:12,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:12,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:14:12,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938720803] [2021-06-06 00:14:12,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:12,975 INFO L87 Difference]: Start difference. First operand 11388 states and 43020 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:13,608 INFO L93 Difference]: Finished difference Result 17700 states and 63852 transitions. [2021-06-06 00:14:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:14:13,609 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:13,639 INFO L225 Difference]: With dead ends: 17700 [2021-06-06 00:14:13,639 INFO L226 Difference]: Without dead ends: 17684 [2021-06-06 00:14:13,639 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 314.3ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:14:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17684 states. [2021-06-06 00:14:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17684 to 12696. [2021-06-06 00:14:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12696 states, 12695 states have (on average 3.8450571090980703) internal successors, (48813), 12695 states have internal predecessors, (48813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12696 states to 12696 states and 48813 transitions. [2021-06-06 00:14:13,900 INFO L78 Accepts]: Start accepts. Automaton has 12696 states and 48813 transitions. Word has length 28 [2021-06-06 00:14:13,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:13,900 INFO L482 AbstractCegarLoop]: Abstraction has 12696 states and 48813 transitions. [2021-06-06 00:14:13,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12696 states and 48813 transitions. [2021-06-06 00:14:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:13,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:13,919 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:14,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3955 [2021-06-06 00:14:14,119 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:14,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:14,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1748793285, now seen corresponding path program 102 times [2021-06-06 00:14:14,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:14,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702026304] [2021-06-06 00:14:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:14,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:14,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702026304] [2021-06-06 00:14:14,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702026304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:14,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718584049] [2021-06-06 00:14:14,142 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 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:14,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:14:14,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:14,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:14,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:14,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718584049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:14,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:14,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:14:14,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999546007] [2021-06-06 00:14:14,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:14,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:14,238 INFO L87 Difference]: Start difference. First operand 12696 states and 48813 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:14,854 INFO L93 Difference]: Finished difference Result 17792 states and 64097 transitions. [2021-06-06 00:14:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:14:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:14,884 INFO L225 Difference]: With dead ends: 17792 [2021-06-06 00:14:14,884 INFO L226 Difference]: Without dead ends: 17786 [2021-06-06 00:14:14,884 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 347.1ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:14:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17786 states. [2021-06-06 00:14:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17786 to 12666. [2021-06-06 00:14:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12666 states, 12665 states have (on average 3.844295302013423) internal successors, (48688), 12665 states have internal predecessors, (48688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12666 states to 12666 states and 48688 transitions. [2021-06-06 00:14:15,151 INFO L78 Accepts]: Start accepts. Automaton has 12666 states and 48688 transitions. Word has length 28 [2021-06-06 00:14:15,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:15,151 INFO L482 AbstractCegarLoop]: Abstraction has 12666 states and 48688 transitions. [2021-06-06 00:14:15,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 12666 states and 48688 transitions. [2021-06-06 00:14:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:15,170 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:15,170 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:15,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3956,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:15,370 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1491665525, now seen corresponding path program 103 times [2021-06-06 00:14:15,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:15,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288799015] [2021-06-06 00:14:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:15,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:15,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288799015] [2021-06-06 00:14:15,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288799015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:15,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282132155] [2021-06-06 00:14:15,393 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 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:15,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:15,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282132155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:15,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:15,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:14:15,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725964714] [2021-06-06 00:14:15,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:15,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:15,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:15,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:15,478 INFO L87 Difference]: Start difference. First operand 12666 states and 48688 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:16,015 INFO L93 Difference]: Finished difference Result 19854 states and 71614 transitions. [2021-06-06 00:14:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:14:16,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:16,050 INFO L225 Difference]: With dead ends: 19854 [2021-06-06 00:14:16,050 INFO L226 Difference]: Without dead ends: 19838 [2021-06-06 00:14:16,050 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 273.0ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:14:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19838 states. [2021-06-06 00:14:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19838 to 12721. [2021-06-06 00:14:16,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12721 states, 12720 states have (on average 3.8488207547169813) internal successors, (48957), 12720 states have internal predecessors, (48957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12721 states to 12721 states and 48957 transitions. [2021-06-06 00:14:16,361 INFO L78 Accepts]: Start accepts. Automaton has 12721 states and 48957 transitions. Word has length 28 [2021-06-06 00:14:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:16,361 INFO L482 AbstractCegarLoop]: Abstraction has 12721 states and 48957 transitions. [2021-06-06 00:14:16,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 12721 states and 48957 transitions. [2021-06-06 00:14:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:16,379 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:16,379 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:16,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3957,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:16,580 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1457648085, now seen corresponding path program 104 times [2021-06-06 00:14:16,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:16,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162474501] [2021-06-06 00:14:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:16,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:16,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162474501] [2021-06-06 00:14:16,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162474501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:16,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883379282] [2021-06-06 00:14:16,603 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 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:16,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:16,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:16,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:16,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:16,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883379282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:16,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:16,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:14:16,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578300879] [2021-06-06 00:14:16,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:16,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:16,691 INFO L87 Difference]: Start difference. First operand 12721 states and 48957 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:17,273 INFO L93 Difference]: Finished difference Result 20992 states and 75172 transitions. [2021-06-06 00:14:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:14:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:17,309 INFO L225 Difference]: With dead ends: 20992 [2021-06-06 00:14:17,309 INFO L226 Difference]: Without dead ends: 20992 [2021-06-06 00:14:17,309 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 326.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:14:17,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20992 states. [2021-06-06 00:14:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20992 to 12737. [2021-06-06 00:14:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12737 states, 12736 states have (on average 3.845791457286432) internal successors, (48980), 12736 states have internal predecessors, (48980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 48980 transitions. [2021-06-06 00:14:17,593 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 48980 transitions. Word has length 28 [2021-06-06 00:14:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:17,594 INFO L482 AbstractCegarLoop]: Abstraction has 12737 states and 48980 transitions. [2021-06-06 00:14:17,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 48980 transitions. [2021-06-06 00:14:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:17,613 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:17,613 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:17,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3958 [2021-06-06 00:14:17,814 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1381492369, now seen corresponding path program 77 times [2021-06-06 00:14:17,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:17,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114504442] [2021-06-06 00:14:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:17,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:17,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:17,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114504442] [2021-06-06 00:14:17,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114504442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:17,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240128298] [2021-06-06 00:14:17,844 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 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:17,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 00:14:17,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:17,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:17,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:17,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240128298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:17,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:17,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:14:17,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508683702] [2021-06-06 00:14:17,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:17,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:17,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:17,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:17,932 INFO L87 Difference]: Start difference. First operand 12737 states and 48980 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:18,713 INFO L93 Difference]: Finished difference Result 22133 states and 81225 transitions. [2021-06-06 00:14:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:14:18,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:18,753 INFO L225 Difference]: With dead ends: 22133 [2021-06-06 00:14:18,753 INFO L226 Difference]: Without dead ends: 22129 [2021-06-06 00:14:18,753 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 449.5ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:14:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22129 states. [2021-06-06 00:14:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22129 to 12991. [2021-06-06 00:14:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12991 states, 12990 states have (on average 3.8354888375673597) internal successors, (49823), 12990 states have internal predecessors, (49823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12991 states to 12991 states and 49823 transitions. [2021-06-06 00:14:19,110 INFO L78 Accepts]: Start accepts. Automaton has 12991 states and 49823 transitions. Word has length 28 [2021-06-06 00:14:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:19,110 INFO L482 AbstractCegarLoop]: Abstraction has 12991 states and 49823 transitions. [2021-06-06 00:14:19,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 12991 states and 49823 transitions. [2021-06-06 00:14:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:19,129 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:19,129 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:19,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3959,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:19,329 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1750460849, now seen corresponding path program 105 times [2021-06-06 00:14:19,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:19,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563074948] [2021-06-06 00:14:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:19,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:19,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563074948] [2021-06-06 00:14:19,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563074948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:19,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014044436] [2021-06-06 00:14:19,361 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 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:19,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:14:19,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:19,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:19,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:19,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014044436] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:19,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:19,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:14:19,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407974101] [2021-06-06 00:14:19,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:19,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:19,439 INFO L87 Difference]: Start difference. First operand 12991 states and 49823 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:19,972 INFO L93 Difference]: Finished difference Result 18794 states and 68812 transitions. [2021-06-06 00:14:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:14:19,972 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:20,006 INFO L225 Difference]: With dead ends: 18794 [2021-06-06 00:14:20,006 INFO L226 Difference]: Without dead ends: 18768 [2021-06-06 00:14:20,006 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 280.0ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:14:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18768 states. [2021-06-06 00:14:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18768 to 13271. [2021-06-06 00:14:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13271 states, 13270 states have (on average 3.853654860587792) internal successors, (51138), 13270 states have internal predecessors, (51138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13271 states to 13271 states and 51138 transitions. [2021-06-06 00:14:20,268 INFO L78 Accepts]: Start accepts. Automaton has 13271 states and 51138 transitions. Word has length 28 [2021-06-06 00:14:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:20,268 INFO L482 AbstractCegarLoop]: Abstraction has 13271 states and 51138 transitions. [2021-06-06 00:14:20,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13271 states and 51138 transitions. [2021-06-06 00:14:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:20,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:20,287 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:20,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3960,183 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:20,487 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1198852761, now seen corresponding path program 106 times [2021-06-06 00:14:20,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:20,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491353582] [2021-06-06 00:14:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:20,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:20,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491353582] [2021-06-06 00:14:20,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491353582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:20,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569780970] [2021-06-06 00:14:20,514 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 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:20,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:20,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:20,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:20,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:20,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569780970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:20,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:20,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:14:20,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921194017] [2021-06-06 00:14:20,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:20,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:20,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:20,596 INFO L87 Difference]: Start difference. First operand 13271 states and 51138 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:21,217 INFO L93 Difference]: Finished difference Result 18772 states and 67861 transitions. [2021-06-06 00:14:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:14:21,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:21,251 INFO L225 Difference]: With dead ends: 18772 [2021-06-06 00:14:21,251 INFO L226 Difference]: Without dead ends: 18772 [2021-06-06 00:14:21,251 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 347.5ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:14:21,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18772 states. [2021-06-06 00:14:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18772 to 13226. [2021-06-06 00:14:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13226 states, 13225 states have (on average 3.8455198487712665) internal successors, (50857), 13225 states have internal predecessors, (50857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13226 states to 13226 states and 50857 transitions. [2021-06-06 00:14:21,521 INFO L78 Accepts]: Start accepts. Automaton has 13226 states and 50857 transitions. Word has length 28 [2021-06-06 00:14:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:21,521 INFO L482 AbstractCegarLoop]: Abstraction has 13226 states and 50857 transitions. [2021-06-06 00:14:21,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13226 states and 50857 transitions. [2021-06-06 00:14:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:21,609 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:21,609 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:21,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3961,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:21,809 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:21,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:21,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1518971225, now seen corresponding path program 107 times [2021-06-06 00:14:21,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:21,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633310499] [2021-06-06 00:14:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:21,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:21,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633310499] [2021-06-06 00:14:21,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633310499] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:21,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587729317] [2021-06-06 00:14:21,836 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 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:21,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:14:21,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:21,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:21,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:21,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587729317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:21,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:21,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:14:21,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119650050] [2021-06-06 00:14:21,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:21,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:21,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:21,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:21,918 INFO L87 Difference]: Start difference. First operand 13226 states and 50857 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:22,491 INFO L93 Difference]: Finished difference Result 20120 states and 73134 transitions. [2021-06-06 00:14:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:14:22,491 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:22,529 INFO L225 Difference]: With dead ends: 20120 [2021-06-06 00:14:22,530 INFO L226 Difference]: Without dead ends: 20120 [2021-06-06 00:14:22,530 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 306.0ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:14:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20120 states. [2021-06-06 00:14:22,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20120 to 13939. [2021-06-06 00:14:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13939 states, 13938 states have (on average 3.8318266609269624) internal successors, (53408), 13938 states have internal predecessors, (53408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13939 states to 13939 states and 53408 transitions. [2021-06-06 00:14:22,810 INFO L78 Accepts]: Start accepts. Automaton has 13939 states and 53408 transitions. Word has length 28 [2021-06-06 00:14:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:22,810 INFO L482 AbstractCegarLoop]: Abstraction has 13939 states and 53408 transitions. [2021-06-06 00:14:22,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13939 states and 53408 transitions. [2021-06-06 00:14:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:22,830 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:22,830 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:23,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3962 [2021-06-06 00:14:23,030 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:23,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:23,030 INFO L82 PathProgramCache]: Analyzing trace with hash -629568261, now seen corresponding path program 108 times [2021-06-06 00:14:23,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:23,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381350592] [2021-06-06 00:14:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:23,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:23,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381350592] [2021-06-06 00:14:23,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381350592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:23,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980460635] [2021-06-06 00:14:23,057 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 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:23,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:14:23,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:23,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:23,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:23,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980460635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:23,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:23,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:14:23,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971552094] [2021-06-06 00:14:23,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:23,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:23,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:23,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:23,145 INFO L87 Difference]: Start difference. First operand 13939 states and 53408 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:23,857 INFO L93 Difference]: Finished difference Result 22535 states and 80778 transitions. [2021-06-06 00:14:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:14:23,858 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:23,896 INFO L225 Difference]: With dead ends: 22535 [2021-06-06 00:14:23,897 INFO L226 Difference]: Without dead ends: 22535 [2021-06-06 00:14:23,897 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 395.2ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:14:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22535 states. [2021-06-06 00:14:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22535 to 14169. [2021-06-06 00:14:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14169 states, 14168 states have (on average 3.8435206098249575) internal successors, (54455), 14168 states have internal predecessors, (54455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14169 states to 14169 states and 54455 transitions. [2021-06-06 00:14:24,197 INFO L78 Accepts]: Start accepts. Automaton has 14169 states and 54455 transitions. Word has length 28 [2021-06-06 00:14:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:24,197 INFO L482 AbstractCegarLoop]: Abstraction has 14169 states and 54455 transitions. [2021-06-06 00:14:24,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14169 states and 54455 transitions. [2021-06-06 00:14:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:24,217 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:24,217 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:24,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3963,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:24,418 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1952101299, now seen corresponding path program 78 times [2021-06-06 00:14:24,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:24,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347449817] [2021-06-06 00:14:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:24,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:24,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347449817] [2021-06-06 00:14:24,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347449817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:24,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013711642] [2021-06-06 00:14:24,448 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 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:24,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:14:24,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:24,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:24,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:24,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013711642] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:24,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:24,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:14:24,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842341844] [2021-06-06 00:14:24,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:24,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:24,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:24,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:24,632 INFO L87 Difference]: Start difference. First operand 14169 states and 54455 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:26,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:26,028 INFO L93 Difference]: Finished difference Result 39203 states and 140890 transitions. [2021-06-06 00:14:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:14:26,028 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:26,105 INFO L225 Difference]: With dead ends: 39203 [2021-06-06 00:14:26,105 INFO L226 Difference]: Without dead ends: 39203 [2021-06-06 00:14:26,106 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 812.5ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:14:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39203 states. [2021-06-06 00:14:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39203 to 15405. [2021-06-06 00:14:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15405 states, 15404 states have (on average 3.890028564009348) internal successors, (59922), 15404 states have internal predecessors, (59922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15405 states to 15405 states and 59922 transitions. [2021-06-06 00:14:26,600 INFO L78 Accepts]: Start accepts. Automaton has 15405 states and 59922 transitions. Word has length 28 [2021-06-06 00:14:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:26,600 INFO L482 AbstractCegarLoop]: Abstraction has 15405 states and 59922 transitions. [2021-06-06 00:14:26,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 15405 states and 59922 transitions. [2021-06-06 00:14:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:26,622 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:26,622 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:26,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3964,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:26,822 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:26,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:26,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1385149219, now seen corresponding path program 79 times [2021-06-06 00:14:26,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:26,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75478198] [2021-06-06 00:14:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:26,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:26,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75478198] [2021-06-06 00:14:26,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75478198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:26,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190407689] [2021-06-06 00:14:26,852 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 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:26,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:26,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:26,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190407689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:26,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:26,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:14:26,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657722049] [2021-06-06 00:14:26,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:26,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:26,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:26,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:26,957 INFO L87 Difference]: Start difference. First operand 15405 states and 59922 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:28,231 INFO L93 Difference]: Finished difference Result 38231 states and 138333 transitions. [2021-06-06 00:14:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:14:28,231 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:28,307 INFO L225 Difference]: With dead ends: 38231 [2021-06-06 00:14:28,307 INFO L226 Difference]: Without dead ends: 38231 [2021-06-06 00:14:28,308 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 771.2ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:14:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38231 states. [2021-06-06 00:14:28,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38231 to 15379. [2021-06-06 00:14:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15379 states, 15378 states have (on average 3.886461178306672) internal successors, (59766), 15378 states have internal predecessors, (59766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15379 states to 15379 states and 59766 transitions. [2021-06-06 00:14:28,829 INFO L78 Accepts]: Start accepts. Automaton has 15379 states and 59766 transitions. Word has length 28 [2021-06-06 00:14:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:28,829 INFO L482 AbstractCegarLoop]: Abstraction has 15379 states and 59766 transitions. [2021-06-06 00:14:28,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 15379 states and 59766 transitions. [2021-06-06 00:14:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:28,850 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:28,850 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:29,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3965 [2021-06-06 00:14:29,051 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:29,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:29,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1667375567, now seen corresponding path program 109 times [2021-06-06 00:14:29,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:29,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217248305] [2021-06-06 00:14:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:29,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:29,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217248305] [2021-06-06 00:14:29,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217248305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:29,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901210549] [2021-06-06 00:14:29,080 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 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:29,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:29,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:29,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901210549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:29,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:29,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:14:29,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146793625] [2021-06-06 00:14:29,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:14:29,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:29,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:14:29,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:14:29,145 INFO L87 Difference]: Start difference. First operand 15379 states and 59766 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-06-06 00:14:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:29,363 INFO L93 Difference]: Finished difference Result 23740 states and 90889 transitions. [2021-06-06 00:14:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:14:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 28 [2021-06-06 00:14:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:29,408 INFO L225 Difference]: With dead ends: 23740 [2021-06-06 00:14:29,408 INFO L226 Difference]: Without dead ends: 23693 [2021-06-06 00:14:29,408 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:14:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23693 states. [2021-06-06 00:14:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23693 to 20498. [2021-06-06 00:14:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20498 states, 20497 states have (on average 3.9016441430453237) internal successors, (79972), 20497 states have internal predecessors, (79972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20498 states to 20498 states and 79972 transitions. [2021-06-06 00:14:29,773 INFO L78 Accepts]: Start accepts. Automaton has 20498 states and 79972 transitions. Word has length 28 [2021-06-06 00:14:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:29,773 INFO L482 AbstractCegarLoop]: Abstraction has 20498 states and 79972 transitions. [2021-06-06 00:14:29,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-06-06 00:14:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 20498 states and 79972 transitions. [2021-06-06 00:14:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:29,801 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:29,801 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:30,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3966,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:30,009 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:30,009 INFO L82 PathProgramCache]: Analyzing trace with hash 242691175, now seen corresponding path program 110 times [2021-06-06 00:14:30,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:30,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992222017] [2021-06-06 00:14:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:30,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:30,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992222017] [2021-06-06 00:14:30,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992222017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:30,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539482794] [2021-06-06 00:14:30,034 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 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:30,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:30,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:30,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:30,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:30,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539482794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:30,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:30,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:14:30,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123059532] [2021-06-06 00:14:30,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:14:30,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:30,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:14:30,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:14:30,101 INFO L87 Difference]: Start difference. First operand 20498 states and 79972 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:30,305 INFO L93 Difference]: Finished difference Result 23252 states and 88342 transitions. [2021-06-06 00:14:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:14:30,305 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 28 [2021-06-06 00:14:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:30,348 INFO L225 Difference]: With dead ends: 23252 [2021-06-06 00:14:30,349 INFO L226 Difference]: Without dead ends: 23252 [2021-06-06 00:14:30,349 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 79.5ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:14:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23252 states. [2021-06-06 00:14:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23252 to 20001. [2021-06-06 00:14:30,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20001 states, 20000 states have (on average 3.89) internal successors, (77800), 20000 states have internal predecessors, (77800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20001 states to 20001 states and 77800 transitions. [2021-06-06 00:14:30,703 INFO L78 Accepts]: Start accepts. Automaton has 20001 states and 77800 transitions. Word has length 28 [2021-06-06 00:14:30,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:30,703 INFO L482 AbstractCegarLoop]: Abstraction has 20001 states and 77800 transitions. [2021-06-06 00:14:30,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 20001 states and 77800 transitions. [2021-06-06 00:14:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:30,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:30,849 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:31,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3967 [2021-06-06 00:14:31,052 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:31,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash -708990263, now seen corresponding path program 111 times [2021-06-06 00:14:31,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:31,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652775286] [2021-06-06 00:14:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:31,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:31,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652775286] [2021-06-06 00:14:31,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652775286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:31,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806061792] [2021-06-06 00:14:31,085 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 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:31,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:14:31,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:31,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:31,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806061792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:31,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:31,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:14:31,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892967878] [2021-06-06 00:14:31,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:14:31,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:31,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:14:31,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:14:31,178 INFO L87 Difference]: Start difference. First operand 20001 states and 77800 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:31,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:31,953 INFO L93 Difference]: Finished difference Result 31840 states and 117907 transitions. [2021-06-06 00:14:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:14:31,953 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:32,015 INFO L225 Difference]: With dead ends: 31840 [2021-06-06 00:14:32,015 INFO L226 Difference]: Without dead ends: 31840 [2021-06-06 00:14:32,016 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 408.5ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:14:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31840 states. [2021-06-06 00:14:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31840 to 20067. [2021-06-06 00:14:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20067 states, 20066 states have (on average 3.888069371075451) internal successors, (78018), 20066 states have internal predecessors, (78018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20067 states to 20067 states and 78018 transitions. [2021-06-06 00:14:32,445 INFO L78 Accepts]: Start accepts. Automaton has 20067 states and 78018 transitions. Word has length 28 [2021-06-06 00:14:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:32,446 INFO L482 AbstractCegarLoop]: Abstraction has 20067 states and 78018 transitions. [2021-06-06 00:14:32,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:32,446 INFO L276 IsEmpty]: Start isEmpty. Operand 20067 states and 78018 transitions. [2021-06-06 00:14:32,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:32,473 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:32,473 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:32,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3968,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:32,673 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1685309107, now seen corresponding path program 112 times [2021-06-06 00:14:32,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:32,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801066983] [2021-06-06 00:14:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:32,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:32,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801066983] [2021-06-06 00:14:32,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801066983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:32,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789096346] [2021-06-06 00:14:32,706 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 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:32,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:32,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:32,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:32,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:32,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789096346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:32,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:32,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:14:32,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97956579] [2021-06-06 00:14:32,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:32,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:32,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:32,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:32,808 INFO L87 Difference]: Start difference. First operand 20067 states and 78018 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:34,106 INFO L93 Difference]: Finished difference Result 40672 states and 148990 transitions. [2021-06-06 00:14:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:14:34,107 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:34,189 INFO L225 Difference]: With dead ends: 40672 [2021-06-06 00:14:34,189 INFO L226 Difference]: Without dead ends: 40672 [2021-06-06 00:14:34,190 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 736.7ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-06 00:14:34,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40672 states. [2021-06-06 00:14:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40672 to 20072. [2021-06-06 00:14:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20072 states, 20071 states have (on average 3.8901400029893876) internal successors, (78079), 20071 states have internal predecessors, (78079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20072 states to 20072 states and 78079 transitions. [2021-06-06 00:14:34,792 INFO L78 Accepts]: Start accepts. Automaton has 20072 states and 78079 transitions. Word has length 28 [2021-06-06 00:14:34,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:34,792 INFO L482 AbstractCegarLoop]: Abstraction has 20072 states and 78079 transitions. [2021-06-06 00:14:34,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 20072 states and 78079 transitions. [2021-06-06 00:14:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:34,820 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:34,820 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:35,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3969,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:35,020 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:35,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:35,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1118357027, now seen corresponding path program 113 times [2021-06-06 00:14:35,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:35,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581301537] [2021-06-06 00:14:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:35,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:35,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581301537] [2021-06-06 00:14:35,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581301537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:35,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427213055] [2021-06-06 00:14:35,054 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 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:35,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:14:35,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:35,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:35,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:35,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427213055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:35,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:35,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:14:35,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878422077] [2021-06-06 00:14:35,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:14:35,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:35,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:14:35,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:14:35,154 INFO L87 Difference]: Start difference. First operand 20072 states and 78079 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:36,381 INFO L93 Difference]: Finished difference Result 40237 states and 148140 transitions. [2021-06-06 00:14:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:14:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:36,465 INFO L225 Difference]: With dead ends: 40237 [2021-06-06 00:14:36,465 INFO L226 Difference]: Without dead ends: 40237 [2021-06-06 00:14:36,466 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 727.9ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-06 00:14:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40237 states. [2021-06-06 00:14:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40237 to 19860. [2021-06-06 00:14:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19860 states, 19859 states have (on average 3.8822700035248503) internal successors, (77098), 19859 states have internal predecessors, (77098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19860 states to 19860 states and 77098 transitions. [2021-06-06 00:14:36,986 INFO L78 Accepts]: Start accepts. Automaton has 19860 states and 77098 transitions. Word has length 28 [2021-06-06 00:14:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:36,987 INFO L482 AbstractCegarLoop]: Abstraction has 19860 states and 77098 transitions. [2021-06-06 00:14:36,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19860 states and 77098 transitions. [2021-06-06 00:14:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:37,014 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:37,014 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:37,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3970,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:37,215 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:37,215 INFO L82 PathProgramCache]: Analyzing trace with hash -182218355, now seen corresponding path program 114 times [2021-06-06 00:14:37,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:37,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308557613] [2021-06-06 00:14:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:37,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:37,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308557613] [2021-06-06 00:14:37,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308557613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:37,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483187780] [2021-06-06 00:14:37,245 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 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:37,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:14:37,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:37,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:14:37,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:14:37,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483187780] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:37,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:37,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:14:37,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300819180] [2021-06-06 00:14:37,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:14:37,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:37,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:14:37,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:14:37,316 INFO L87 Difference]: Start difference. First operand 19860 states and 77098 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:37,644 INFO L93 Difference]: Finished difference Result 29387 states and 109674 transitions. [2021-06-06 00:14:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:14:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:37,709 INFO L225 Difference]: With dead ends: 29387 [2021-06-06 00:14:37,709 INFO L226 Difference]: Without dead ends: 29370 [2021-06-06 00:14:37,709 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:14:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29370 states. [2021-06-06 00:14:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29370 to 20128. [2021-06-06 00:14:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 20127 states have (on average 3.887812391315149) internal successors, (78250), 20127 states have internal predecessors, (78250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 78250 transitions. [2021-06-06 00:14:38,215 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 78250 transitions. Word has length 28 [2021-06-06 00:14:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:38,215 INFO L482 AbstractCegarLoop]: Abstraction has 20128 states and 78250 transitions. [2021-06-06 00:14:38,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 78250 transitions. [2021-06-06 00:14:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:38,244 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:38,244 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:38,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3971,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:38,445 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:38,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1325144395, now seen corresponding path program 115 times [2021-06-06 00:14:38,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:38,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144907544] [2021-06-06 00:14:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:38,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:38,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144907544] [2021-06-06 00:14:38,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144907544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:38,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877159213] [2021-06-06 00:14:38,469 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 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:14:38,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:14:38,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877159213] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:38,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:38,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:14:38,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220997511] [2021-06-06 00:14:38,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:14:38,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:38,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:14:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:14:38,540 INFO L87 Difference]: Start difference. First operand 20128 states and 78250 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:38,783 INFO L93 Difference]: Finished difference Result 31182 states and 115264 transitions. [2021-06-06 00:14:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:14:38,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:38,845 INFO L225 Difference]: With dead ends: 31182 [2021-06-06 00:14:38,846 INFO L226 Difference]: Without dead ends: 31182 [2021-06-06 00:14:38,846 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 97.9ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:14:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31182 states. [2021-06-06 00:14:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31182 to 19797. [2021-06-06 00:14:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19797 states, 19796 states have (on average 3.8727015558698725) internal successors, (76664), 19796 states have internal predecessors, (76664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19797 states to 19797 states and 76664 transitions. [2021-06-06 00:14:39,254 INFO L78 Accepts]: Start accepts. Automaton has 19797 states and 76664 transitions. Word has length 28 [2021-06-06 00:14:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:39,254 INFO L482 AbstractCegarLoop]: Abstraction has 19797 states and 76664 transitions. [2021-06-06 00:14:39,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19797 states and 76664 transitions. [2021-06-06 00:14:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:39,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:39,282 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:39,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3972,195 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:39,483 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:39,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1623141335, now seen corresponding path program 116 times [2021-06-06 00:14:39,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:39,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077618143] [2021-06-06 00:14:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:39,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:39,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077618143] [2021-06-06 00:14:39,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077618143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:39,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146185633] [2021-06-06 00:14:39,515 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 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:39,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:39,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:39,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:39,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146185633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:39,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:39,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:14:39,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150241300] [2021-06-06 00:14:39,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:39,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:39,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:39,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:39,598 INFO L87 Difference]: Start difference. First operand 19797 states and 76664 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:40,256 INFO L93 Difference]: Finished difference Result 29369 states and 109123 transitions. [2021-06-06 00:14:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:14:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:40,315 INFO L225 Difference]: With dead ends: 29369 [2021-06-06 00:14:40,315 INFO L226 Difference]: Without dead ends: 29369 [2021-06-06 00:14:40,315 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 341.3ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:14:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29369 states. [2021-06-06 00:14:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29369 to 19845. [2021-06-06 00:14:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19845 states, 19844 states have (on average 3.871497681918968) internal successors, (76826), 19844 states have internal predecessors, (76826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19845 states to 19845 states and 76826 transitions. [2021-06-06 00:14:40,885 INFO L78 Accepts]: Start accepts. Automaton has 19845 states and 76826 transitions. Word has length 28 [2021-06-06 00:14:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:40,885 INFO L482 AbstractCegarLoop]: Abstraction has 19845 states and 76826 transitions. [2021-06-06 00:14:40,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:40,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19845 states and 76826 transitions. [2021-06-06 00:14:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:40,912 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:40,913 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:41,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3973,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:41,113 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1886911867, now seen corresponding path program 117 times [2021-06-06 00:14:41,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:41,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617641752] [2021-06-06 00:14:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:41,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:41,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617641752] [2021-06-06 00:14:41,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617641752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:41,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417200656] [2021-06-06 00:14:41,144 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 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:41,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:14:41,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:41,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:41,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:41,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417200656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:41,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:41,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:14:41,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020893290] [2021-06-06 00:14:41,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:41,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:41,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:41,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:41,229 INFO L87 Difference]: Start difference. First operand 19845 states and 76826 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:42,087 INFO L93 Difference]: Finished difference Result 30894 states and 113497 transitions. [2021-06-06 00:14:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:14:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:42,148 INFO L225 Difference]: With dead ends: 30894 [2021-06-06 00:14:42,148 INFO L226 Difference]: Without dead ends: 30894 [2021-06-06 00:14:42,149 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 464.8ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:14:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30894 states. [2021-06-06 00:14:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30894 to 20391. [2021-06-06 00:14:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20391 states, 20390 states have (on average 3.8505640019617458) internal successors, (78513), 20390 states have internal predecessors, (78513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20391 states to 20391 states and 78513 transitions. [2021-06-06 00:14:42,606 INFO L78 Accepts]: Start accepts. Automaton has 20391 states and 78513 transitions. Word has length 28 [2021-06-06 00:14:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:42,606 INFO L482 AbstractCegarLoop]: Abstraction has 20391 states and 78513 transitions. [2021-06-06 00:14:42,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 20391 states and 78513 transitions. [2021-06-06 00:14:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:42,633 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:42,633 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:42,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3974 [2021-06-06 00:14:42,834 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:42,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1931733009, now seen corresponding path program 118 times [2021-06-06 00:14:42,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:42,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533102218] [2021-06-06 00:14:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:42,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:42,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533102218] [2021-06-06 00:14:42,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533102218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:42,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040278547] [2021-06-06 00:14:42,865 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 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:42,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:42,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:42,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:42,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:42,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040278547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:42,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:42,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:14:42,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380547973] [2021-06-06 00:14:42,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:14:42,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:42,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:14:42,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:14:42,945 INFO L87 Difference]: Start difference. First operand 20391 states and 78513 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:43,707 INFO L93 Difference]: Finished difference Result 30020 states and 111194 transitions. [2021-06-06 00:14:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:14:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:43,767 INFO L225 Difference]: With dead ends: 30020 [2021-06-06 00:14:43,767 INFO L226 Difference]: Without dead ends: 30016 [2021-06-06 00:14:43,768 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 390.0ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:14:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30016 states. [2021-06-06 00:14:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30016 to 20283. [2021-06-06 00:14:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20283 states, 20282 states have (on average 3.8532196035893898) internal successors, (78151), 20282 states have internal predecessors, (78151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20283 states to 20283 states and 78151 transitions. [2021-06-06 00:14:44,202 INFO L78 Accepts]: Start accepts. Automaton has 20283 states and 78151 transitions. Word has length 28 [2021-06-06 00:14:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:44,202 INFO L482 AbstractCegarLoop]: Abstraction has 20283 states and 78151 transitions. [2021-06-06 00:14:44,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 20283 states and 78151 transitions. [2021-06-06 00:14:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:44,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:44,230 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:44,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3975,198 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:44,430 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:44,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1066349071, now seen corresponding path program 119 times [2021-06-06 00:14:44,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:44,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147947326] [2021-06-06 00:14:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:44,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:44,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147947326] [2021-06-06 00:14:44,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147947326] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:44,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279771171] [2021-06-06 00:14:44,454 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 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:44,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:14:44,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:44,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:14:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-06 00:14:44,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279771171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:44,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:44,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:14:44,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101385939] [2021-06-06 00:14:44,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:14:44,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:44,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:14:44,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:14:44,521 INFO L87 Difference]: Start difference. First operand 20283 states and 78151 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2021-06-06 00:14:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:44,773 INFO L93 Difference]: Finished difference Result 25295 states and 94083 transitions. [2021-06-06 00:14:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:14:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 28 [2021-06-06 00:14:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:44,822 INFO L225 Difference]: With dead ends: 25295 [2021-06-06 00:14:44,822 INFO L226 Difference]: Without dead ends: 25295 [2021-06-06 00:14:44,822 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25295 states. [2021-06-06 00:14:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25295 to 20593. [2021-06-06 00:14:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20593 states, 20592 states have (on average 3.8444055944055946) internal successors, (79164), 20592 states have internal predecessors, (79164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20593 states to 20593 states and 79164 transitions. [2021-06-06 00:14:45,186 INFO L78 Accepts]: Start accepts. Automaton has 20593 states and 79164 transitions. Word has length 28 [2021-06-06 00:14:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:45,186 INFO L482 AbstractCegarLoop]: Abstraction has 20593 states and 79164 transitions. [2021-06-06 00:14:45,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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) [2021-06-06 00:14:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 20593 states and 79164 transitions. [2021-06-06 00:14:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:45,214 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:45,214 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:45,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3976,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:45,414 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:45,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:45,415 INFO L82 PathProgramCache]: Analyzing trace with hash -136149327, now seen corresponding path program 120 times [2021-06-06 00:14:45,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:45,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305765696] [2021-06-06 00:14:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:45,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:45,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305765696] [2021-06-06 00:14:45,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305765696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:45,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763399688] [2021-06-06 00:14:45,448 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 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:45,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:14:45,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:45,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:45,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:14:45,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763399688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:45,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:45,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:14:45,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621937076] [2021-06-06 00:14:45,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:45,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:45,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:45,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:45,534 INFO L87 Difference]: Start difference. First operand 20593 states and 79164 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:14:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:46,215 INFO L93 Difference]: Finished difference Result 31016 states and 113583 transitions. [2021-06-06 00:14:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:14:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:14:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:46,278 INFO L225 Difference]: With dead ends: 31016 [2021-06-06 00:14:46,278 INFO L226 Difference]: Without dead ends: 31016 [2021-06-06 00:14:46,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 371.1ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:14:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31016 states. [2021-06-06 00:14:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31016 to 22203. [2021-06-06 00:14:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22203 states, 22202 states have (on average 3.856454373479867) internal successors, (85621), 22202 states have internal predecessors, (85621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22203 states to 22203 states and 85621 transitions. [2021-06-06 00:14:46,750 INFO L78 Accepts]: Start accepts. Automaton has 22203 states and 85621 transitions. Word has length 28 [2021-06-06 00:14:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:46,750 INFO L482 AbstractCegarLoop]: Abstraction has 22203 states and 85621 transitions. [2021-06-06 00:14:46,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:14:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 22203 states and 85621 transitions. [2021-06-06 00:14:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:46,781 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:46,781 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:46,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3977 [2021-06-06 00:14:46,982 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:46,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1975921655, now seen corresponding path program 121 times [2021-06-06 00:14:46,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:46,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246602935] [2021-06-06 00:14:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:47,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:47,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246602935] [2021-06-06 00:14:47,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246602935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:47,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617833392] [2021-06-06 00:14:47,013 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 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:47,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:47,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 00:14:47,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617833392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:47,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:47,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:14:47,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115524147] [2021-06-06 00:14:47,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:47,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:47,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:47,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:47,084 INFO L87 Difference]: Start difference. First operand 22203 states and 85621 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:14:47,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:47,666 INFO L93 Difference]: Finished difference Result 29255 states and 109041 transitions. [2021-06-06 00:14:47,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:14:47,667 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:14:47,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:47,728 INFO L225 Difference]: With dead ends: 29255 [2021-06-06 00:14:47,728 INFO L226 Difference]: Without dead ends: 29243 [2021-06-06 00:14:47,729 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 302.2ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:14:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29243 states. [2021-06-06 00:14:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29243 to 22351. [2021-06-06 00:14:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22351 states, 22350 states have (on average 3.8510514541387026) internal successors, (86071), 22350 states have internal predecessors, (86071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22351 states to 22351 states and 86071 transitions. [2021-06-06 00:14:48,297 INFO L78 Accepts]: Start accepts. Automaton has 22351 states and 86071 transitions. Word has length 28 [2021-06-06 00:14:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:48,297 INFO L482 AbstractCegarLoop]: Abstraction has 22351 states and 86071 transitions. [2021-06-06 00:14:48,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:14:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 22351 states and 86071 transitions. [2021-06-06 00:14:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:48,328 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:48,328 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:48,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3978,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:48,529 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:48,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1688262325, now seen corresponding path program 122 times [2021-06-06 00:14:48,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:48,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101914975] [2021-06-06 00:14:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:48,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:48,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101914975] [2021-06-06 00:14:48,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101914975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:48,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075112048] [2021-06-06 00:14:48,554 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 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:48,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:48,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:48,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:14:48,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:48,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075112048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:48,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:48,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:14:48,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180349] [2021-06-06 00:14:48,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:14:48,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:48,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:14:48,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:14:48,627 INFO L87 Difference]: Start difference. First operand 22351 states and 86071 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:48,837 INFO L93 Difference]: Finished difference Result 25610 states and 97028 transitions. [2021-06-06 00:14:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 00:14:48,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:48,890 INFO L225 Difference]: With dead ends: 25610 [2021-06-06 00:14:48,891 INFO L226 Difference]: Without dead ends: 25610 [2021-06-06 00:14:48,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25610 states. [2021-06-06 00:14:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25610 to 23154. [2021-06-06 00:14:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23154 states, 23153 states have (on average 3.8461538461538463) internal successors, (89050), 23153 states have internal predecessors, (89050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23154 states to 23154 states and 89050 transitions. [2021-06-06 00:14:49,298 INFO L78 Accepts]: Start accepts. Automaton has 23154 states and 89050 transitions. Word has length 28 [2021-06-06 00:14:49,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:49,298 INFO L482 AbstractCegarLoop]: Abstraction has 23154 states and 89050 transitions. [2021-06-06 00:14:49,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 23154 states and 89050 transitions. [2021-06-06 00:14:49,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:49,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:49,331 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:49,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3979 [2021-06-06 00:14:49,538 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:49,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2131923893, now seen corresponding path program 123 times [2021-06-06 00:14:49,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:49,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135331902] [2021-06-06 00:14:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:49,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:49,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135331902] [2021-06-06 00:14:49,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135331902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:49,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535048664] [2021-06-06 00:14:49,570 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 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:49,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:14:49,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:49,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:49,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:49,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535048664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:49,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:49,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:14:49,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045625127] [2021-06-06 00:14:49,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:14:49,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:49,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:14:49,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:14:49,645 INFO L87 Difference]: Start difference. First operand 23154 states and 89050 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:50,289 INFO L93 Difference]: Finished difference Result 30991 states and 114399 transitions. [2021-06-06 00:14:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:14:50,289 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:50,352 INFO L225 Difference]: With dead ends: 30991 [2021-06-06 00:14:50,352 INFO L226 Difference]: Without dead ends: 30991 [2021-06-06 00:14:50,353 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 349.8ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:14:50,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30991 states. [2021-06-06 00:14:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30991 to 24366. [2021-06-06 00:14:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24366 states, 24365 states have (on average 3.8139134003693824) internal successors, (92926), 24365 states have internal predecessors, (92926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24366 states to 24366 states and 92926 transitions. [2021-06-06 00:14:50,871 INFO L78 Accepts]: Start accepts. Automaton has 24366 states and 92926 transitions. Word has length 28 [2021-06-06 00:14:50,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:50,871 INFO L482 AbstractCegarLoop]: Abstraction has 24366 states and 92926 transitions. [2021-06-06 00:14:50,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 24366 states and 92926 transitions. [2021-06-06 00:14:50,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:50,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:50,906 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:51,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3980 [2021-06-06 00:14:51,107 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:51,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1422950451, now seen corresponding path program 124 times [2021-06-06 00:14:51,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:51,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592101506] [2021-06-06 00:14:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:51,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:51,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592101506] [2021-06-06 00:14:51,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592101506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:51,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864303382] [2021-06-06 00:14:51,136 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 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:51,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:51,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:51,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:51,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:51,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864303382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:51,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:51,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:14:51,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600154936] [2021-06-06 00:14:51,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:14:51,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:51,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:14:51,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:14:51,219 INFO L87 Difference]: Start difference. First operand 24366 states and 92926 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:51,799 INFO L93 Difference]: Finished difference Result 30092 states and 112016 transitions. [2021-06-06 00:14:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:14:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:51,857 INFO L225 Difference]: With dead ends: 30092 [2021-06-06 00:14:51,857 INFO L226 Difference]: Without dead ends: 30084 [2021-06-06 00:14:51,857 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 243.5ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:14:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30084 states. [2021-06-06 00:14:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30084 to 24188. [2021-06-06 00:14:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24188 states, 24187 states have (on average 3.820027287385786) internal successors, (92395), 24187 states have internal predecessors, (92395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24188 states to 24188 states and 92395 transitions. [2021-06-06 00:14:52,308 INFO L78 Accepts]: Start accepts. Automaton has 24188 states and 92395 transitions. Word has length 28 [2021-06-06 00:14:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:52,308 INFO L482 AbstractCegarLoop]: Abstraction has 24188 states and 92395 transitions. [2021-06-06 00:14:52,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 24188 states and 92395 transitions. [2021-06-06 00:14:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:52,341 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:52,341 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:52,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3981,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:52,542 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:52,542 INFO L82 PathProgramCache]: Analyzing trace with hash 27046477, now seen corresponding path program 125 times [2021-06-06 00:14:52,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:52,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715054478] [2021-06-06 00:14:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:52,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:52,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715054478] [2021-06-06 00:14:52,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715054478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:52,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638449120] [2021-06-06 00:14:52,577 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 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:52,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:14:52,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:52,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:52,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:52,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638449120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:52,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:52,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:14:52,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368438573] [2021-06-06 00:14:52,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:14:52,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:52,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:14:52,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:14:52,655 INFO L87 Difference]: Start difference. First operand 24188 states and 92395 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:53,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:53,268 INFO L93 Difference]: Finished difference Result 31919 states and 117608 transitions. [2021-06-06 00:14:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:14:53,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:53,331 INFO L225 Difference]: With dead ends: 31919 [2021-06-06 00:14:53,331 INFO L226 Difference]: Without dead ends: 31919 [2021-06-06 00:14:53,332 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 328.9ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:14:53,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31919 states. [2021-06-06 00:14:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31919 to 25212. [2021-06-06 00:14:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25212 states, 25211 states have (on average 3.796160406171909) internal successors, (95705), 25211 states have internal predecessors, (95705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25212 states to 25212 states and 95705 transitions. [2021-06-06 00:14:53,875 INFO L78 Accepts]: Start accepts. Automaton has 25212 states and 95705 transitions. Word has length 28 [2021-06-06 00:14:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:53,875 INFO L482 AbstractCegarLoop]: Abstraction has 25212 states and 95705 transitions. [2021-06-06 00:14:53,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 25212 states and 95705 transitions. [2021-06-06 00:14:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:53,909 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:53,909 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:54,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3982,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:54,109 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1055976179, now seen corresponding path program 126 times [2021-06-06 00:14:54,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:54,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364456859] [2021-06-06 00:14:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:54,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:54,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364456859] [2021-06-06 00:14:54,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364456859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:54,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293636446] [2021-06-06 00:14:54,151 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 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:54,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:14:54,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:54,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:54,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:54,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293636446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:54,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:54,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:14:54,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150282163] [2021-06-06 00:14:54,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:14:54,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:54,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:14:54,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:14:54,212 INFO L87 Difference]: Start difference. First operand 25212 states and 95705 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:54,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:54,548 INFO L93 Difference]: Finished difference Result 30875 states and 116320 transitions. [2021-06-06 00:14:54,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:14:54,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 28 [2021-06-06 00:14:54,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:54,614 INFO L225 Difference]: With dead ends: 30875 [2021-06-06 00:14:54,614 INFO L226 Difference]: Without dead ends: 30862 [2021-06-06 00:14:54,614 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:14:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30862 states. [2021-06-06 00:14:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30862 to 29308. [2021-06-06 00:14:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29308 states, 29307 states have (on average 3.8146517896748215) internal successors, (111796), 29307 states have internal predecessors, (111796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29308 states to 29308 states and 111796 transitions. [2021-06-06 00:14:55,261 INFO L78 Accepts]: Start accepts. Automaton has 29308 states and 111796 transitions. Word has length 28 [2021-06-06 00:14:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:55,261 INFO L482 AbstractCegarLoop]: Abstraction has 29308 states and 111796 transitions. [2021-06-06 00:14:55,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 29308 states and 111796 transitions. [2021-06-06 00:14:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:55,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:55,305 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:55,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3983,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:55,505 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 415101939, now seen corresponding path program 127 times [2021-06-06 00:14:55,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:55,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040289575] [2021-06-06 00:14:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:55,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:55,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:55,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040289575] [2021-06-06 00:14:55,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040289575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:55,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116291683] [2021-06-06 00:14:55,541 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 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:55,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:55,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:55,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116291683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:55,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:55,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:14:55,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199535309] [2021-06-06 00:14:55,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:14:55,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:55,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:14:55,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:14:55,604 INFO L87 Difference]: Start difference. First operand 29308 states and 111796 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:55,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:55,898 INFO L93 Difference]: Finished difference Result 32311 states and 121127 transitions. [2021-06-06 00:14:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:14:55,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 28 [2021-06-06 00:14:55,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:55,965 INFO L225 Difference]: With dead ends: 32311 [2021-06-06 00:14:55,965 INFO L226 Difference]: Without dead ends: 32311 [2021-06-06 00:14:55,965 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:14:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32311 states. [2021-06-06 00:14:56,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32311 to 29053. [2021-06-06 00:14:56,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29053 states, 29052 states have (on average 3.81099407958144) internal successors, (110717), 29052 states have internal predecessors, (110717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29053 states to 29053 states and 110717 transitions. [2021-06-06 00:14:56,523 INFO L78 Accepts]: Start accepts. Automaton has 29053 states and 110717 transitions. Word has length 28 [2021-06-06 00:14:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:56,523 INFO L482 AbstractCegarLoop]: Abstraction has 29053 states and 110717 transitions. [2021-06-06 00:14:56,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand 29053 states and 110717 transitions. [2021-06-06 00:14:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:56,566 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:56,566 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:56,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3984 [2021-06-06 00:14:56,766 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:56,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:56,767 INFO L82 PathProgramCache]: Analyzing trace with hash -17774665, now seen corresponding path program 128 times [2021-06-06 00:14:56,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:56,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660355697] [2021-06-06 00:14:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:56,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:56,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660355697] [2021-06-06 00:14:56,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660355697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:56,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572165006] [2021-06-06 00:14:56,794 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 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:56,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:56,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:56,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:56,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:14:56,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572165006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:56,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:56,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:14:56,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076348274] [2021-06-06 00:14:56,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:14:56,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:56,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:14:56,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:14:56,862 INFO L87 Difference]: Start difference. First operand 29053 states and 110717 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:57,374 INFO L93 Difference]: Finished difference Result 35470 states and 132021 transitions. [2021-06-06 00:14:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:14:57,375 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:14:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:57,449 INFO L225 Difference]: With dead ends: 35470 [2021-06-06 00:14:57,449 INFO L226 Difference]: Without dead ends: 35462 [2021-06-06 00:14:57,450 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:14:57,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35462 states. [2021-06-06 00:14:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35462 to 29019. [2021-06-06 00:14:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29019 states, 29018 states have (on average 3.8114273898959268) internal successors, (110600), 29018 states have internal predecessors, (110600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29019 states to 29019 states and 110600 transitions. [2021-06-06 00:14:58,230 INFO L78 Accepts]: Start accepts. Automaton has 29019 states and 110600 transitions. Word has length 28 [2021-06-06 00:14:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:58,230 INFO L482 AbstractCegarLoop]: Abstraction has 29019 states and 110600 transitions. [2021-06-06 00:14:58,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 29019 states and 110600 transitions. [2021-06-06 00:14:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:58,277 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:58,278 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:58,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3985,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:58,478 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:58,478 INFO L82 PathProgramCache]: Analyzing trace with hash -913595481, now seen corresponding path program 129 times [2021-06-06 00:14:58,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:58,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753774040] [2021-06-06 00:14:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:58,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:58,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753774040] [2021-06-06 00:14:58,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753774040] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:58,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084411374] [2021-06-06 00:14:58,509 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 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:58,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:14:58,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:58,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:14:58,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:58,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084411374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:58,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:58,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:14:58,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400364220] [2021-06-06 00:14:58,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:14:58,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:14:58,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:14:58,598 INFO L87 Difference]: Start difference. First operand 29019 states and 110600 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:59,009 INFO L93 Difference]: Finished difference Result 31865 states and 120062 transitions. [2021-06-06 00:14:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:14:59,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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 28 [2021-06-06 00:14:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:59,082 INFO L225 Difference]: With dead ends: 31865 [2021-06-06 00:14:59,082 INFO L226 Difference]: Without dead ends: 31865 [2021-06-06 00:14:59,082 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 171.7ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:14:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31865 states. [2021-06-06 00:14:59,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31865 to 29551. [2021-06-06 00:14:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29551 states, 29550 states have (on average 3.8099492385786804) internal successors, (112584), 29550 states have internal predecessors, (112584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29551 states to 29551 states and 112584 transitions. [2021-06-06 00:14:59,695 INFO L78 Accepts]: Start accepts. Automaton has 29551 states and 112584 transitions. Word has length 28 [2021-06-06 00:14:59,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:59,695 INFO L482 AbstractCegarLoop]: Abstraction has 29551 states and 112584 transitions. [2021-06-06 00:14:59,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-06 00:14:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 29551 states and 112584 transitions. [2021-06-06 00:14:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:14:59,738 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:59,738 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:14:59,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3986 [2021-06-06 00:14:59,939 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash 579561993, now seen corresponding path program 130 times [2021-06-06 00:14:59,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:59,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750224193] [2021-06-06 00:14:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:14:59,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:59,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750224193] [2021-06-06 00:14:59,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750224193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:59,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780909398] [2021-06-06 00:14:59,967 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 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:59,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:59,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:59,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:14:59,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:15:00,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780909398] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:00,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:00,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:15:00,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044483477] [2021-06-06 00:15:00,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:15:00,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:00,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:15:00,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:15:00,043 INFO L87 Difference]: Start difference. First operand 29551 states and 112584 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:00,557 INFO L93 Difference]: Finished difference Result 36395 states and 135424 transitions. [2021-06-06 00:15:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:15:00,557 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:00,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:00,635 INFO L225 Difference]: With dead ends: 36395 [2021-06-06 00:15:00,635 INFO L226 Difference]: Without dead ends: 36371 [2021-06-06 00:15:00,635 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 229.5ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:15:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36371 states. [2021-06-06 00:15:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36371 to 29723. [2021-06-06 00:15:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29723 states, 29722 states have (on average 3.8058677074221117) internal successors, (113118), 29722 states have internal predecessors, (113118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29723 states to 29723 states and 113118 transitions. [2021-06-06 00:15:01,256 INFO L78 Accepts]: Start accepts. Automaton has 29723 states and 113118 transitions. Word has length 28 [2021-06-06 00:15:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:01,256 INFO L482 AbstractCegarLoop]: Abstraction has 29723 states and 113118 transitions. [2021-06-06 00:15:01,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 29723 states and 113118 transitions. [2021-06-06 00:15:01,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:01,304 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:01,304 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:01,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3987 [2021-06-06 00:15:01,504 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:01,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1271447701, now seen corresponding path program 131 times [2021-06-06 00:15:01,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:01,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558272127] [2021-06-06 00:15:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:01,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:01,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558272127] [2021-06-06 00:15:01,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558272127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:01,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69688107] [2021-06-06 00:15:01,541 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 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:01,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:15:01,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:01,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:01,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:01,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69688107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:01,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:01,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-06 00:15:01,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280170241] [2021-06-06 00:15:01,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:15:01,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:01,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:15:01,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:15:01,608 INFO L87 Difference]: Start difference. First operand 29723 states and 113118 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-06-06 00:15:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:02,021 INFO L93 Difference]: Finished difference Result 32279 states and 121530 transitions. [2021-06-06 00:15:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:15:02,022 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 28 [2021-06-06 00:15:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:02,095 INFO L225 Difference]: With dead ends: 32279 [2021-06-06 00:15:02,095 INFO L226 Difference]: Without dead ends: 32279 [2021-06-06 00:15:02,096 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 192.7ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:15:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32279 states. [2021-06-06 00:15:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32279 to 29649. [2021-06-06 00:15:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29649 states, 29648 states have (on average 3.8067323259579062) internal successors, (112862), 29648 states have internal predecessors, (112862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29649 states to 29649 states and 112862 transitions. [2021-06-06 00:15:02,774 INFO L78 Accepts]: Start accepts. Automaton has 29649 states and 112862 transitions. Word has length 28 [2021-06-06 00:15:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:02,774 INFO L482 AbstractCegarLoop]: Abstraction has 29649 states and 112862 transitions. [2021-06-06 00:15:02,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-06-06 00:15:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29649 states and 112862 transitions. [2021-06-06 00:15:02,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:02,819 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:02,819 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:03,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3988,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:03,020 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash -412931571, now seen corresponding path program 132 times [2021-06-06 00:15:03,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:03,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883370242] [2021-06-06 00:15:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:03,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:03,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883370242] [2021-06-06 00:15:03,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883370242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:03,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077959437] [2021-06-06 00:15:03,054 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 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:03,075 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:15:03,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:03,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:03,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:03,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077959437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:03,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:03,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:15:03,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133801326] [2021-06-06 00:15:03,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:03,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:03,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:03,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:03,137 INFO L87 Difference]: Start difference. First operand 29649 states and 112862 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:03,741 INFO L93 Difference]: Finished difference Result 36318 states and 135165 transitions. [2021-06-06 00:15:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:15:03,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:03,820 INFO L225 Difference]: With dead ends: 36318 [2021-06-06 00:15:03,820 INFO L226 Difference]: Without dead ends: 36278 [2021-06-06 00:15:03,820 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:15:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36278 states. [2021-06-06 00:15:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36278 to 29805. [2021-06-06 00:15:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29805 states, 29804 states have (on average 3.80284525567038) internal successors, (113340), 29804 states have internal predecessors, (113340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:04,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29805 states to 29805 states and 113340 transitions. [2021-06-06 00:15:04,474 INFO L78 Accepts]: Start accepts. Automaton has 29805 states and 113340 transitions. Word has length 28 [2021-06-06 00:15:04,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:04,475 INFO L482 AbstractCegarLoop]: Abstraction has 29805 states and 113340 transitions. [2021-06-06 00:15:04,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:04,475 INFO L276 IsEmpty]: Start isEmpty. Operand 29805 states and 113340 transitions. [2021-06-06 00:15:04,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:04,522 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:04,522 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:04,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3989 [2021-06-06 00:15:04,723 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1625942477, now seen corresponding path program 133 times [2021-06-06 00:15:04,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:04,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517291415] [2021-06-06 00:15:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:04,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:04,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517291415] [2021-06-06 00:15:04,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517291415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:04,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696986234] [2021-06-06 00:15:04,751 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 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:04,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:04,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:04,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696986234] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:04,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:04,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:04,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121701757] [2021-06-06 00:15:04,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:04,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:04,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:04,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:04,860 INFO L87 Difference]: Start difference. First operand 29805 states and 113340 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:05,990 INFO L93 Difference]: Finished difference Result 68211 states and 251076 transitions. [2021-06-06 00:15:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:15:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:06,157 INFO L225 Difference]: With dead ends: 68211 [2021-06-06 00:15:06,157 INFO L226 Difference]: Without dead ends: 68211 [2021-06-06 00:15:06,158 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 591.7ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:15:06,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68211 states. [2021-06-06 00:15:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68211 to 37529. [2021-06-06 00:15:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37529 states, 37528 states have (on average 3.8846727776593477) internal successors, (145784), 37528 states have internal predecessors, (145784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37529 states to 37529 states and 145784 transitions. [2021-06-06 00:15:07,407 INFO L78 Accepts]: Start accepts. Automaton has 37529 states and 145784 transitions. Word has length 28 [2021-06-06 00:15:07,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:07,407 INFO L482 AbstractCegarLoop]: Abstraction has 37529 states and 145784 transitions. [2021-06-06 00:15:07,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 37529 states and 145784 transitions. [2021-06-06 00:15:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:07,465 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:07,465 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:07,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3990,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:07,666 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:07,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2102072739, now seen corresponding path program 134 times [2021-06-06 00:15:07,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:07,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961233605] [2021-06-06 00:15:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:07,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:07,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961233605] [2021-06-06 00:15:07,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961233605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:07,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684124606] [2021-06-06 00:15:07,694 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 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:07,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:07,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:07,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:07,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:07,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684124606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:07,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:07,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:07,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203933571] [2021-06-06 00:15:07,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:07,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:07,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:07,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:07,799 INFO L87 Difference]: Start difference. First operand 37529 states and 145784 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:08,033 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2021-06-06 00:15:09,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:09,040 INFO L93 Difference]: Finished difference Result 67584 states and 249415 transitions. [2021-06-06 00:15:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:15:09,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:09,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:09,217 INFO L225 Difference]: With dead ends: 67584 [2021-06-06 00:15:09,217 INFO L226 Difference]: Without dead ends: 67584 [2021-06-06 00:15:09,218 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 665.3ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:15:09,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67584 states. [2021-06-06 00:15:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67584 to 37526. [2021-06-06 00:15:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37526 states, 37525 states have (on average 3.884610259826782) internal successors, (145770), 37525 states have internal predecessors, (145770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37526 states to 37526 states and 145770 transitions. [2021-06-06 00:15:10,473 INFO L78 Accepts]: Start accepts. Automaton has 37526 states and 145770 transitions. Word has length 28 [2021-06-06 00:15:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:10,473 INFO L482 AbstractCegarLoop]: Abstraction has 37526 states and 145770 transitions. [2021-06-06 00:15:10,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 37526 states and 145770 transitions. [2021-06-06 00:15:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:10,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:10,528 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:10,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3991 [2021-06-06 00:15:10,728 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1020548699, now seen corresponding path program 135 times [2021-06-06 00:15:10,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:10,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946325223] [2021-06-06 00:15:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:10,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:10,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946325223] [2021-06-06 00:15:10,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946325223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:10,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340406181] [2021-06-06 00:15:10,756 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 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:10,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:15:10,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:10,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:10,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:10,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340406181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:10,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:10,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:15:10,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464071365] [2021-06-06 00:15:10,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:10,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:10,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:10,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:10,854 INFO L87 Difference]: Start difference. First operand 37526 states and 145770 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:12,162 INFO L93 Difference]: Finished difference Result 62987 states and 233868 transitions. [2021-06-06 00:15:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:15:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:12,333 INFO L225 Difference]: With dead ends: 62987 [2021-06-06 00:15:12,333 INFO L226 Difference]: Without dead ends: 62987 [2021-06-06 00:15:12,333 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 590.3ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:15:12,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62987 states. [2021-06-06 00:15:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62987 to 37548. [2021-06-06 00:15:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37548 states, 37547 states have (on average 3.8849175699789598) internal successors, (145867), 37547 states have internal predecessors, (145867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37548 states to 37548 states and 145867 transitions. [2021-06-06 00:15:13,623 INFO L78 Accepts]: Start accepts. Automaton has 37548 states and 145867 transitions. Word has length 28 [2021-06-06 00:15:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:13,623 INFO L482 AbstractCegarLoop]: Abstraction has 37548 states and 145867 transitions. [2021-06-06 00:15:13,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 37548 states and 145867 transitions. [2021-06-06 00:15:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:13,679 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:13,679 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:13,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3992,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:13,880 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1101924787, now seen corresponding path program 136 times [2021-06-06 00:15:13,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:13,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555662032] [2021-06-06 00:15:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:13,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:13,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555662032] [2021-06-06 00:15:13,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555662032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:13,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824243643] [2021-06-06 00:15:13,907 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 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:13,927 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:13,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:13,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:13,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:13,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824243643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:13,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:13,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:15:13,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787710285] [2021-06-06 00:15:13,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:14,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:14,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:14,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:14,000 INFO L87 Difference]: Start difference. First operand 37548 states and 145867 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:15,118 INFO L93 Difference]: Finished difference Result 62120 states and 231628 transitions. [2021-06-06 00:15:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:15:15,118 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:15,286 INFO L225 Difference]: With dead ends: 62120 [2021-06-06 00:15:15,286 INFO L226 Difference]: Without dead ends: 62112 [2021-06-06 00:15:15,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 424.3ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:15:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62112 states. [2021-06-06 00:15:16,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62112 to 37548. [2021-06-06 00:15:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37548 states, 37547 states have (on average 3.8847577702612726) internal successors, (145861), 37547 states have internal predecessors, (145861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37548 states to 37548 states and 145861 transitions. [2021-06-06 00:15:16,459 INFO L78 Accepts]: Start accepts. Automaton has 37548 states and 145861 transitions. Word has length 28 [2021-06-06 00:15:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:16,460 INFO L482 AbstractCegarLoop]: Abstraction has 37548 states and 145861 transitions. [2021-06-06 00:15:16,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 37548 states and 145861 transitions. [2021-06-06 00:15:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:16,516 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:16,516 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:16,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3993,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:16,716 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2032582003, now seen corresponding path program 137 times [2021-06-06 00:15:16,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:16,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019947719] [2021-06-06 00:15:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:16,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:16,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019947719] [2021-06-06 00:15:16,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019947719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:16,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105442791] [2021-06-06 00:15:16,744 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 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:16,764 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:15:16,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:16,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:16,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:16,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105442791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:16,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:16,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:16,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983431990] [2021-06-06 00:15:16,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:16,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:16,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:16,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:16,852 INFO L87 Difference]: Start difference. First operand 37548 states and 145861 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:18,114 INFO L93 Difference]: Finished difference Result 61801 states and 230767 transitions. [2021-06-06 00:15:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:15:18,116 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:18,276 INFO L225 Difference]: With dead ends: 61801 [2021-06-06 00:15:18,277 INFO L226 Difference]: Without dead ends: 61801 [2021-06-06 00:15:18,277 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 639.0ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:15:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61801 states. [2021-06-06 00:15:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61801 to 37556. [2021-06-06 00:15:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37556 states, 37555 states have (on average 3.884835574490747) internal successors, (145895), 37555 states have internal predecessors, (145895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37556 states to 37556 states and 145895 transitions. [2021-06-06 00:15:19,431 INFO L78 Accepts]: Start accepts. Automaton has 37556 states and 145895 transitions. Word has length 28 [2021-06-06 00:15:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:19,431 INFO L482 AbstractCegarLoop]: Abstraction has 37556 states and 145895 transitions. [2021-06-06 00:15:19,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:19,431 INFO L276 IsEmpty]: Start isEmpty. Operand 37556 states and 145895 transitions. [2021-06-06 00:15:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:19,656 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:19,656 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:19,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3994,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:19,869 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:19,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:19,869 INFO L82 PathProgramCache]: Analyzing trace with hash -619346139, now seen corresponding path program 138 times [2021-06-06 00:15:19,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:19,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899979733] [2021-06-06 00:15:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:19,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:19,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899979733] [2021-06-06 00:15:19,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899979733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:19,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009798254] [2021-06-06 00:15:19,896 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 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:19,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:15:19,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:19,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:19,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:19,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009798254] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:19,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:19,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:19,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787168154] [2021-06-06 00:15:19,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:19,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:19,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:19,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:19,998 INFO L87 Difference]: Start difference. First operand 37556 states and 145895 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:21,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:21,059 INFO L93 Difference]: Finished difference Result 61590 states and 230241 transitions. [2021-06-06 00:15:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:15:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:21,217 INFO L225 Difference]: With dead ends: 61590 [2021-06-06 00:15:21,217 INFO L226 Difference]: Without dead ends: 61582 [2021-06-06 00:15:21,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 424.6ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:15:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61582 states. [2021-06-06 00:15:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61582 to 37556. [2021-06-06 00:15:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37556 states, 37555 states have (on average 3.884782319265078) internal successors, (145893), 37555 states have internal predecessors, (145893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37556 states to 37556 states and 145893 transitions. [2021-06-06 00:15:22,380 INFO L78 Accepts]: Start accepts. Automaton has 37556 states and 145893 transitions. Word has length 28 [2021-06-06 00:15:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:22,380 INFO L482 AbstractCegarLoop]: Abstraction has 37556 states and 145893 transitions. [2021-06-06 00:15:22,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:22,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37556 states and 145893 transitions. [2021-06-06 00:15:22,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:22,438 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:22,438 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:22,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3995,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:22,638 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:22,638 INFO L82 PathProgramCache]: Analyzing trace with hash 384081845, now seen corresponding path program 139 times [2021-06-06 00:15:22,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:22,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964548543] [2021-06-06 00:15:22,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:22,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:22,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964548543] [2021-06-06 00:15:22,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964548543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:22,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913463613] [2021-06-06 00:15:22,667 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 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:22,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:22,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:22,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913463613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:22,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:22,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:15:22,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358109551] [2021-06-06 00:15:22,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:22,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:22,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:22,758 INFO L87 Difference]: Start difference. First operand 37556 states and 145893 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:23,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:23,878 INFO L93 Difference]: Finished difference Result 60972 states and 226630 transitions. [2021-06-06 00:15:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:15:23,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:24,023 INFO L225 Difference]: With dead ends: 60972 [2021-06-06 00:15:24,024 INFO L226 Difference]: Without dead ends: 60972 [2021-06-06 00:15:24,024 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 521.7ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:15:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60972 states. [2021-06-06 00:15:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60972 to 40355. [2021-06-06 00:15:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40355 states, 40354 states have (on average 3.8889081627595776) internal successors, (156933), 40354 states have internal predecessors, (156933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40355 states to 40355 states and 156933 transitions. [2021-06-06 00:15:25,408 INFO L78 Accepts]: Start accepts. Automaton has 40355 states and 156933 transitions. Word has length 28 [2021-06-06 00:15:25,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:25,408 INFO L482 AbstractCegarLoop]: Abstraction has 40355 states and 156933 transitions. [2021-06-06 00:15:25,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 40355 states and 156933 transitions. [2021-06-06 00:15:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:25,466 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:25,466 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:25,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3996 [2021-06-06 00:15:25,666 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash 465457933, now seen corresponding path program 140 times [2021-06-06 00:15:25,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:25,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475768928] [2021-06-06 00:15:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:25,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:25,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475768928] [2021-06-06 00:15:25,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475768928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:25,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491283827] [2021-06-06 00:15:25,695 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 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:25,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:25,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:25,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:25,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:25,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491283827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:25,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:25,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:15:25,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121448815] [2021-06-06 00:15:25,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:25,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:25,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:25,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:25,780 INFO L87 Difference]: Start difference. First operand 40355 states and 156933 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:26,848 INFO L93 Difference]: Finished difference Result 60488 states and 225357 transitions. [2021-06-06 00:15:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:15:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:26,998 INFO L225 Difference]: With dead ends: 60488 [2021-06-06 00:15:26,998 INFO L226 Difference]: Without dead ends: 60480 [2021-06-06 00:15:26,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 419.4ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:15:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60480 states. [2021-06-06 00:15:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60480 to 40081. [2021-06-06 00:15:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40081 states, 40080 states have (on average 3.8941616766467066) internal successors, (156078), 40080 states have internal predecessors, (156078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:28,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40081 states to 40081 states and 156078 transitions. [2021-06-06 00:15:28,318 INFO L78 Accepts]: Start accepts. Automaton has 40081 states and 156078 transitions. Word has length 28 [2021-06-06 00:15:28,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:28,318 INFO L482 AbstractCegarLoop]: Abstraction has 40081 states and 156078 transitions. [2021-06-06 00:15:28,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:28,318 INFO L276 IsEmpty]: Start isEmpty. Operand 40081 states and 156078 transitions. [2021-06-06 00:15:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:28,382 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:28,383 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:28,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3997,220 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:28,583 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:28,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1049634039, now seen corresponding path program 141 times [2021-06-06 00:15:28,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:28,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5214309] [2021-06-06 00:15:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:28,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:28,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5214309] [2021-06-06 00:15:28,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5214309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:28,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502025640] [2021-06-06 00:15:28,614 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 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:28,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:15:28,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:28,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:28,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502025640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:28,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:28,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:15:28,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215074555] [2021-06-06 00:15:28,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:28,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:28,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:28,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:28,707 INFO L87 Difference]: Start difference. First operand 40081 states and 156078 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:29,332 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-06 00:15:29,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:29,665 INFO L93 Difference]: Finished difference Result 59033 states and 221360 transitions. [2021-06-06 00:15:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:15:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:29,814 INFO L225 Difference]: With dead ends: 59033 [2021-06-06 00:15:29,814 INFO L226 Difference]: Without dead ends: 59009 [2021-06-06 00:15:29,814 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 508.6ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:15:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59009 states. [2021-06-06 00:15:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59009 to 39991. [2021-06-06 00:15:30,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39991 states, 39990 states have (on average 3.893998499624906) internal successors, (155721), 39990 states have internal predecessors, (155721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39991 states to 39991 states and 155721 transitions. [2021-06-06 00:15:31,124 INFO L78 Accepts]: Start accepts. Automaton has 39991 states and 155721 transitions. Word has length 28 [2021-06-06 00:15:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:31,124 INFO L482 AbstractCegarLoop]: Abstraction has 39991 states and 155721 transitions. [2021-06-06 00:15:31,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:31,125 INFO L276 IsEmpty]: Start isEmpty. Operand 39991 states and 155721 transitions. [2021-06-06 00:15:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:31,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:31,181 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:31,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3998,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:31,382 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash 547492677, now seen corresponding path program 142 times [2021-06-06 00:15:31,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:31,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931572631] [2021-06-06 00:15:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:15:31,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:31,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931572631] [2021-06-06 00:15:31,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931572631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:31,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145829521] [2021-06-06 00:15:31,427 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 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:31,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:31,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:31,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:31,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:31,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145829521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:31,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:31,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:31,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475315431] [2021-06-06 00:15:31,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:31,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:31,533 INFO L87 Difference]: Start difference. First operand 39991 states and 155721 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:32,669 INFO L93 Difference]: Finished difference Result 60273 states and 224760 transitions. [2021-06-06 00:15:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-06 00:15:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:32,820 INFO L225 Difference]: With dead ends: 60273 [2021-06-06 00:15:32,820 INFO L226 Difference]: Without dead ends: 60273 [2021-06-06 00:15:32,820 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 514.8ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:15:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60273 states. [2021-06-06 00:15:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60273 to 40087. [2021-06-06 00:15:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40087 states, 40086 states have (on average 3.892506111859502) internal successors, (156035), 40086 states have internal predecessors, (156035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:34,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40087 states to 40087 states and 156035 transitions. [2021-06-06 00:15:34,040 INFO L78 Accepts]: Start accepts. Automaton has 40087 states and 156035 transitions. Word has length 28 [2021-06-06 00:15:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:34,040 INFO L482 AbstractCegarLoop]: Abstraction has 40087 states and 156035 transitions. [2021-06-06 00:15:34,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 40087 states and 156035 transitions. [2021-06-06 00:15:34,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:34,102 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:34,102 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:34,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3999 [2021-06-06 00:15:34,302 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2104435465, now seen corresponding path program 143 times [2021-06-06 00:15:34,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:34,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569759541] [2021-06-06 00:15:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:15:34,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:34,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569759541] [2021-06-06 00:15:34,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569759541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:34,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219426847] [2021-06-06 00:15:34,331 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 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:34,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:15:34,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:34,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:34,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:34,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219426847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:34,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:34,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:34,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199443642] [2021-06-06 00:15:34,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:34,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:34,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:34,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:34,432 INFO L87 Difference]: Start difference. First operand 40087 states and 156035 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:35,527 INFO L93 Difference]: Finished difference Result 59960 states and 223872 transitions. [2021-06-06 00:15:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:15:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:35,671 INFO L225 Difference]: With dead ends: 59960 [2021-06-06 00:15:35,671 INFO L226 Difference]: Without dead ends: 59952 [2021-06-06 00:15:35,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 434.7ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:15:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59952 states. [2021-06-06 00:15:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59952 to 40019. [2021-06-06 00:15:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40019 states, 40018 states have (on average 3.893822779749113) internal successors, (155823), 40018 states have internal predecessors, (155823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40019 states to 40019 states and 155823 transitions. [2021-06-06 00:15:36,977 INFO L78 Accepts]: Start accepts. Automaton has 40019 states and 155823 transitions. Word has length 28 [2021-06-06 00:15:36,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:36,977 INFO L482 AbstractCegarLoop]: Abstraction has 40019 states and 155823 transitions. [2021-06-06 00:15:36,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40019 states and 155823 transitions. [2021-06-06 00:15:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:37,040 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:37,040 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:37,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4000,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:37,240 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash 923074653, now seen corresponding path program 144 times [2021-06-06 00:15:37,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:37,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307479432] [2021-06-06 00:15:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:15:37,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:37,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307479432] [2021-06-06 00:15:37,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307479432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:37,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78386344] [2021-06-06 00:15:37,272 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 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:37,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:15:37,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:37,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:37,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:37,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78386344] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:37,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:37,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:15:37,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961531013] [2021-06-06 00:15:37,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:37,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:37,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:37,371 INFO L87 Difference]: Start difference. First operand 40019 states and 155823 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:38,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:38,164 INFO L93 Difference]: Finished difference Result 58691 states and 220361 transitions. [2021-06-06 00:15:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:15:38,165 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:38,317 INFO L225 Difference]: With dead ends: 58691 [2021-06-06 00:15:38,317 INFO L226 Difference]: Without dead ends: 58667 [2021-06-06 00:15:38,318 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 333.1ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:15:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58667 states. [2021-06-06 00:15:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58667 to 39995. [2021-06-06 00:15:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39995 states, 39994 states have (on average 3.89395909386408) internal successors, (155735), 39994 states have internal predecessors, (155735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39995 states to 39995 states and 155735 transitions. [2021-06-06 00:15:39,616 INFO L78 Accepts]: Start accepts. Automaton has 39995 states and 155735 transitions. Word has length 28 [2021-06-06 00:15:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:39,616 INFO L482 AbstractCegarLoop]: Abstraction has 39995 states and 155735 transitions. [2021-06-06 00:15:39,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 39995 states and 155735 transitions. [2021-06-06 00:15:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:39,671 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:39,671 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:39,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4001 [2021-06-06 00:15:39,871 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:39,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:39,871 INFO L82 PathProgramCache]: Analyzing trace with hash 100408761, now seen corresponding path program 145 times [2021-06-06 00:15:39,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:39,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020803637] [2021-06-06 00:15:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:39,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:39,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020803637] [2021-06-06 00:15:39,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020803637] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:39,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377925402] [2021-06-06 00:15:39,904 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 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:39,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:39,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:39,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377925402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:39,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:39,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:39,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369541384] [2021-06-06 00:15:39,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:39,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:39,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:39,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:39,986 INFO L87 Difference]: Start difference. First operand 39995 states and 155735 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:41,412 INFO L93 Difference]: Finished difference Result 61857 states and 229366 transitions. [2021-06-06 00:15:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-06 00:15:41,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:41,560 INFO L225 Difference]: With dead ends: 61857 [2021-06-06 00:15:41,560 INFO L226 Difference]: Without dead ends: 61857 [2021-06-06 00:15:41,560 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 725.6ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-06 00:15:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61857 states. [2021-06-06 00:15:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61857 to 44335. [2021-06-06 00:15:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44335 states, 44334 states have (on average 3.8442053502954843) internal successors, (170429), 44334 states have internal predecessors, (170429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44335 states to 44335 states and 170429 transitions. [2021-06-06 00:15:42,908 INFO L78 Accepts]: Start accepts. Automaton has 44335 states and 170429 transitions. Word has length 28 [2021-06-06 00:15:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:42,909 INFO L482 AbstractCegarLoop]: Abstraction has 44335 states and 170429 transitions. [2021-06-06 00:15:42,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 44335 states and 170429 transitions. [2021-06-06 00:15:42,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:42,976 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:42,976 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:43,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4002 [2021-06-06 00:15:43,176 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash 181784849, now seen corresponding path program 146 times [2021-06-06 00:15:43,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:43,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877051025] [2021-06-06 00:15:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:43,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:43,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877051025] [2021-06-06 00:15:43,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877051025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:43,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733113761] [2021-06-06 00:15:43,216 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 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:43,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:43,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:43,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:43,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:43,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733113761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:43,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:43,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:43,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664336232] [2021-06-06 00:15:43,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:43,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:43,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:43,299 INFO L87 Difference]: Start difference. First operand 44335 states and 170429 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:44,570 INFO L93 Difference]: Finished difference Result 61088 states and 227260 transitions. [2021-06-06 00:15:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:15:44,570 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:44,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:44,717 INFO L225 Difference]: With dead ends: 61088 [2021-06-06 00:15:44,718 INFO L226 Difference]: Without dead ends: 61080 [2021-06-06 00:15:44,718 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 569.4ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:15:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61080 states. [2021-06-06 00:15:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61080 to 43223. [2021-06-06 00:15:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43223 states, 43222 states have (on average 3.862963305723937) internal successors, (166965), 43222 states have internal predecessors, (166965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43223 states to 43223 states and 166965 transitions. [2021-06-06 00:15:46,009 INFO L78 Accepts]: Start accepts. Automaton has 43223 states and 166965 transitions. Word has length 28 [2021-06-06 00:15:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:46,009 INFO L482 AbstractCegarLoop]: Abstraction has 43223 states and 166965 transitions. [2021-06-06 00:15:46,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 43223 states and 166965 transitions. [2021-06-06 00:15:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:46,069 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:46,069 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:46,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4003,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:46,270 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1333307123, now seen corresponding path program 147 times [2021-06-06 00:15:46,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:46,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350483371] [2021-06-06 00:15:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:46,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:46,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350483371] [2021-06-06 00:15:46,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350483371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:46,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67480292] [2021-06-06 00:15:46,303 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 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:46,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:15:46,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:46,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:46,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:46,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67480292] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:46,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:46,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52064907] [2021-06-06 00:15:46,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:46,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:46,380 INFO L87 Difference]: Start difference. First operand 43223 states and 166965 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:47,338 INFO L93 Difference]: Finished difference Result 59466 states and 222744 transitions. [2021-06-06 00:15:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:15:47,338 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:47,707 INFO L225 Difference]: With dead ends: 59466 [2021-06-06 00:15:47,707 INFO L226 Difference]: Without dead ends: 59442 [2021-06-06 00:15:47,707 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 496.7ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:15:47,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59442 states. [2021-06-06 00:15:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59442 to 43235. [2021-06-06 00:15:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43235 states, 43234 states have (on average 3.860827126798353) internal successors, (166919), 43234 states have internal predecessors, (166919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43235 states to 43235 states and 166919 transitions. [2021-06-06 00:15:48,938 INFO L78 Accepts]: Start accepts. Automaton has 43235 states and 166919 transitions. Word has length 28 [2021-06-06 00:15:48,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:48,938 INFO L482 AbstractCegarLoop]: Abstraction has 43235 states and 166919 transitions. [2021-06-06 00:15:48,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:48,939 INFO L276 IsEmpty]: Start isEmpty. Operand 43235 states and 166919 transitions. [2021-06-06 00:15:49,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:49,000 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:49,000 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:49,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4004,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:49,200 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:49,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:49,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1959694861, now seen corresponding path program 148 times [2021-06-06 00:15:49,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:49,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521460051] [2021-06-06 00:15:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:49,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:49,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521460051] [2021-06-06 00:15:49,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521460051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:49,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596602255] [2021-06-06 00:15:49,234 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 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:49,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:49,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:49,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:49,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:49,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596602255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:49,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:49,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:49,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638119780] [2021-06-06 00:15:49,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:49,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:49,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:49,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:49,311 INFO L87 Difference]: Start difference. First operand 43235 states and 166919 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:50,454 INFO L93 Difference]: Finished difference Result 60717 states and 226269 transitions. [2021-06-06 00:15:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:15:50,455 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:50,605 INFO L225 Difference]: With dead ends: 60717 [2021-06-06 00:15:50,605 INFO L226 Difference]: Without dead ends: 60677 [2021-06-06 00:15:50,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 448.9ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:15:50,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60677 states. [2021-06-06 00:15:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60677 to 43367. [2021-06-06 00:15:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43367 states, 43366 states have (on average 3.860143891527925) internal successors, (167399), 43366 states have internal predecessors, (167399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43367 states to 43367 states and 167399 transitions. [2021-06-06 00:15:51,777 INFO L78 Accepts]: Start accepts. Automaton has 43367 states and 167399 transitions. Word has length 28 [2021-06-06 00:15:51,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:51,777 INFO L482 AbstractCegarLoop]: Abstraction has 43367 states and 167399 transitions. [2021-06-06 00:15:51,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 43367 states and 167399 transitions. [2021-06-06 00:15:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:51,837 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:51,837 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:52,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4005,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:52,037 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:52,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:52,038 INFO L82 PathProgramCache]: Analyzing trace with hash 243917385, now seen corresponding path program 149 times [2021-06-06 00:15:52,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:52,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960310235] [2021-06-06 00:15:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:52,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:52,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960310235] [2021-06-06 00:15:52,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960310235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:52,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054636776] [2021-06-06 00:15:52,071 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 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:52,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:15:52,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:52,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:52,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:52,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054636776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:52,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:52,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:15:52,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726698800] [2021-06-06 00:15:52,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:15:52,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:15:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:15:52,179 INFO L87 Difference]: Start difference. First operand 43367 states and 167399 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:53,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:53,666 INFO L93 Difference]: Finished difference Result 59965 states and 224001 transitions. [2021-06-06 00:15:53,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-06 00:15:53,667 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:53,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:53,822 INFO L225 Difference]: With dead ends: 59965 [2021-06-06 00:15:53,823 INFO L226 Difference]: Without dead ends: 59965 [2021-06-06 00:15:53,823 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 922.7ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-06 00:15:53,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59965 states. [2021-06-06 00:15:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59965 to 44272. [2021-06-06 00:15:55,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44272 states, 44271 states have (on average 3.8506019742043325) internal successors, (170470), 44271 states have internal predecessors, (170470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44272 states to 44272 states and 170470 transitions. [2021-06-06 00:15:55,123 INFO L78 Accepts]: Start accepts. Automaton has 44272 states and 170470 transitions. Word has length 28 [2021-06-06 00:15:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:55,123 INFO L482 AbstractCegarLoop]: Abstraction has 44272 states and 170470 transitions. [2021-06-06 00:15:55,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 44272 states and 170470 transitions. [2021-06-06 00:15:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:55,188 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:55,188 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:55,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4006,229 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:55,389 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:55,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1886956539, now seen corresponding path program 150 times [2021-06-06 00:15:55,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:55,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603588035] [2021-06-06 00:15:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:55,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:55,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603588035] [2021-06-06 00:15:55,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603588035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:55,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002716727] [2021-06-06 00:15:55,423 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 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:55,443 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:15:55,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:55,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:55,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:55,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002716727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:55,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:55,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:15:55,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997872204] [2021-06-06 00:15:55,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:15:55,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:15:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:15:55,526 INFO L87 Difference]: Start difference. First operand 44272 states and 170470 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:56,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:56,782 INFO L93 Difference]: Finished difference Result 59467 states and 222606 transitions. [2021-06-06 00:15:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:15:56,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:56,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:56,923 INFO L225 Difference]: With dead ends: 59467 [2021-06-06 00:15:56,923 INFO L226 Difference]: Without dead ends: 59459 [2021-06-06 00:15:56,923 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 572.4ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:15:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59459 states. [2021-06-06 00:15:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59459 to 44196. [2021-06-06 00:15:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44196 states, 44195 states have (on average 3.85188369725082) internal successors, (170234), 44195 states have internal predecessors, (170234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44196 states to 44196 states and 170234 transitions. [2021-06-06 00:15:58,077 INFO L78 Accepts]: Start accepts. Automaton has 44196 states and 170234 transitions. Word has length 28 [2021-06-06 00:15:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:58,078 INFO L482 AbstractCegarLoop]: Abstraction has 44196 states and 170234 transitions. [2021-06-06 00:15:58,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 44196 states and 170234 transitions. [2021-06-06 00:15:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:58,140 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:58,140 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:15:58,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4007,230 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:58,341 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:58,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:58,341 INFO L82 PathProgramCache]: Analyzing trace with hash 619499361, now seen corresponding path program 151 times [2021-06-06 00:15:58,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:58,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715221676] [2021-06-06 00:15:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:58,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:58,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715221676] [2021-06-06 00:15:58,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715221676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:58,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706283325] [2021-06-06 00:15:58,374 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 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:58,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:58,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:15:58,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706283325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:58,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:58,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:15:58,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710992850] [2021-06-06 00:15:58,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:58,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:58,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:58,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:58,651 INFO L87 Difference]: Start difference. First operand 44196 states and 170234 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:59,707 INFO L93 Difference]: Finished difference Result 58944 states and 221360 transitions. [2021-06-06 00:15:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:15:59,707 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:15:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:59,847 INFO L225 Difference]: With dead ends: 58944 [2021-06-06 00:15:59,847 INFO L226 Difference]: Without dead ends: 58920 [2021-06-06 00:15:59,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 514.3ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:15:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58920 states. [2021-06-06 00:16:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58920 to 44182. [2021-06-06 00:16:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44182 states, 44181 states have (on average 3.8518593965731878) internal successors, (170179), 44181 states have internal predecessors, (170179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44182 states to 44182 states and 170179 transitions. [2021-06-06 00:16:01,047 INFO L78 Accepts]: Start accepts. Automaton has 44182 states and 170179 transitions. Word has length 28 [2021-06-06 00:16:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:01,047 INFO L482 AbstractCegarLoop]: Abstraction has 44182 states and 170179 transitions. [2021-06-06 00:16:01,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 44182 states and 170179 transitions. [2021-06-06 00:16:01,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:01,260 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:01,261 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:01,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4008 [2021-06-06 00:16:01,461 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1303085277, now seen corresponding path program 152 times [2021-06-06 00:16:01,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:01,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775758789] [2021-06-06 00:16:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:01,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:01,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775758789] [2021-06-06 00:16:01,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775758789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:01,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560560575] [2021-06-06 00:16:01,494 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 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:01,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:01,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:01,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:01,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:01,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560560575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:01,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:01,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:16:01,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883533601] [2021-06-06 00:16:01,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:01,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:01,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:01,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:01,578 INFO L87 Difference]: Start difference. First operand 44182 states and 170179 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:02,482 INFO L93 Difference]: Finished difference Result 58726 states and 220667 transitions. [2021-06-06 00:16:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:16:02,482 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:02,621 INFO L225 Difference]: With dead ends: 58726 [2021-06-06 00:16:02,621 INFO L226 Difference]: Without dead ends: 58686 [2021-06-06 00:16:02,621 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 446.1ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:16:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58686 states. [2021-06-06 00:16:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58686 to 44531. [2021-06-06 00:16:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44531 states, 44530 states have (on average 3.853761509094992) internal successors, (171608), 44530 states have internal predecessors, (171608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44531 states to 44531 states and 171608 transitions. [2021-06-06 00:16:04,010 INFO L78 Accepts]: Start accepts. Automaton has 44531 states and 171608 transitions. Word has length 28 [2021-06-06 00:16:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:04,010 INFO L482 AbstractCegarLoop]: Abstraction has 44531 states and 171608 transitions. [2021-06-06 00:16:04,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 44531 states and 171608 transitions. [2021-06-06 00:16:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:04,086 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:04,086 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:04,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4009,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:04,287 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:04,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:04,287 INFO L82 PathProgramCache]: Analyzing trace with hash 806750187, now seen corresponding path program 153 times [2021-06-06 00:16:04,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:04,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613541197] [2021-06-06 00:16:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:04,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:04,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613541197] [2021-06-06 00:16:04,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613541197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:04,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991800325] [2021-06-06 00:16:04,323 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 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:04,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:16:04,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:04,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:04,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:04,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991800325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:04,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:04,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:04,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160589254] [2021-06-06 00:16:04,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:04,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:04,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:04,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:04,430 INFO L87 Difference]: Start difference. First operand 44531 states and 171608 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:05,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:05,526 INFO L93 Difference]: Finished difference Result 71242 states and 265120 transitions. [2021-06-06 00:16:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:16:05,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:05,696 INFO L225 Difference]: With dead ends: 71242 [2021-06-06 00:16:05,696 INFO L226 Difference]: Without dead ends: 71242 [2021-06-06 00:16:05,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 537.6ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:16:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71242 states. [2021-06-06 00:16:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71242 to 45697. [2021-06-06 00:16:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45697 states, 45696 states have (on average 3.8682379201680672) internal successors, (176763), 45696 states have internal predecessors, (176763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45697 states to 45697 states and 176763 transitions. [2021-06-06 00:16:07,150 INFO L78 Accepts]: Start accepts. Automaton has 45697 states and 176763 transitions. Word has length 28 [2021-06-06 00:16:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:07,150 INFO L482 AbstractCegarLoop]: Abstraction has 45697 states and 176763 transitions. [2021-06-06 00:16:07,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45697 states and 176763 transitions. [2021-06-06 00:16:07,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:07,213 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:07,214 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:07,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4010 [2021-06-06 00:16:07,414 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash 132028309, now seen corresponding path program 154 times [2021-06-06 00:16:07,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:07,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154263900] [2021-06-06 00:16:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:07,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:07,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154263900] [2021-06-06 00:16:07,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154263900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:07,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212471342] [2021-06-06 00:16:07,449 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 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:07,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:07,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:07,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:07,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:07,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212471342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:07,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:07,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:07,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808526108] [2021-06-06 00:16:07,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:07,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:07,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:07,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:07,549 INFO L87 Difference]: Start difference. First operand 45697 states and 176763 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:08,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:08,557 INFO L93 Difference]: Finished difference Result 65327 states and 246370 transitions. [2021-06-06 00:16:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:16:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:08,989 INFO L225 Difference]: With dead ends: 65327 [2021-06-06 00:16:08,989 INFO L226 Difference]: Without dead ends: 65327 [2021-06-06 00:16:08,989 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 466.9ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:16:09,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65327 states. [2021-06-06 00:16:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65327 to 45727. [2021-06-06 00:16:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45727 states, 45726 states have (on average 3.868040064733412) internal successors, (176870), 45726 states have internal predecessors, (176870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45727 states to 45727 states and 176870 transitions. [2021-06-06 00:16:10,287 INFO L78 Accepts]: Start accepts. Automaton has 45727 states and 176870 transitions. Word has length 28 [2021-06-06 00:16:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:10,287 INFO L482 AbstractCegarLoop]: Abstraction has 45727 states and 176870 transitions. [2021-06-06 00:16:10,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 45727 states and 176870 transitions. [2021-06-06 00:16:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:10,360 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:10,360 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:10,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 234 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4011 [2021-06-06 00:16:10,561 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:10,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1785388485, now seen corresponding path program 155 times [2021-06-06 00:16:10,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:10,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124014816] [2021-06-06 00:16:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:10,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:10,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124014816] [2021-06-06 00:16:10,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124014816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:10,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933123973] [2021-06-06 00:16:10,597 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 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:10,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:16:10,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:10,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:10,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:10,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933123973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:10,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:10,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:16:10,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351204293] [2021-06-06 00:16:10,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:16:10,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:10,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:16:10,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:16:10,708 INFO L87 Difference]: Start difference. First operand 45727 states and 176870 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:12,325 INFO L93 Difference]: Finished difference Result 66185 states and 248806 transitions. [2021-06-06 00:16:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:16:12,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:12,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:12,484 INFO L225 Difference]: With dead ends: 66185 [2021-06-06 00:16:12,484 INFO L226 Difference]: Without dead ends: 66185 [2021-06-06 00:16:12,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 793.6ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-06 00:16:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66185 states. [2021-06-06 00:16:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66185 to 45991. [2021-06-06 00:16:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45991 states, 45990 states have (on average 3.8644922809306372) internal successors, (177728), 45990 states have internal predecessors, (177728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45991 states to 45991 states and 177728 transitions. [2021-06-06 00:16:13,778 INFO L78 Accepts]: Start accepts. Automaton has 45991 states and 177728 transitions. Word has length 28 [2021-06-06 00:16:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:13,778 INFO L482 AbstractCegarLoop]: Abstraction has 45991 states and 177728 transitions. [2021-06-06 00:16:13,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 45991 states and 177728 transitions. [2021-06-06 00:16:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:13,844 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:13,844 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:14,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4012 [2021-06-06 00:16:14,049 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:14,049 INFO L82 PathProgramCache]: Analyzing trace with hash -866539657, now seen corresponding path program 156 times [2021-06-06 00:16:14,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:14,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996293752] [2021-06-06 00:16:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:14,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:14,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996293752] [2021-06-06 00:16:14,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996293752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:14,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949663875] [2021-06-06 00:16:14,082 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 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:14,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:16:14,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:14,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:14,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:14,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949663875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:14,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:14,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:16:14,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540461388] [2021-06-06 00:16:14,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:16:14,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:14,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:16:14,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:16:14,185 INFO L87 Difference]: Start difference. First operand 45991 states and 177728 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:15,128 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-06-06 00:16:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:15,578 INFO L93 Difference]: Finished difference Result 65397 states and 246571 transitions. [2021-06-06 00:16:15,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:16:15,579 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:15,746 INFO L225 Difference]: With dead ends: 65397 [2021-06-06 00:16:15,746 INFO L226 Difference]: Without dead ends: 65393 [2021-06-06 00:16:15,746 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 837.9ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-06 00:16:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65393 states. [2021-06-06 00:16:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65393 to 45627. [2021-06-06 00:16:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45627 states, 45626 states have (on average 3.868233025029588) internal successors, (176492), 45626 states have internal predecessors, (176492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45627 states to 45627 states and 176492 transitions. [2021-06-06 00:16:17,097 INFO L78 Accepts]: Start accepts. Automaton has 45627 states and 176492 transitions. Word has length 28 [2021-06-06 00:16:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:17,097 INFO L482 AbstractCegarLoop]: Abstraction has 45627 states and 176492 transitions. [2021-06-06 00:16:17,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:17,097 INFO L276 IsEmpty]: Start isEmpty. Operand 45627 states and 176492 transitions. [2021-06-06 00:16:17,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:17,160 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:17,161 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:17,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 236 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4013 [2021-06-06 00:16:17,361 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:17,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:17,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1338899459, now seen corresponding path program 157 times [2021-06-06 00:16:17,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:17,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278135613] [2021-06-06 00:16:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:17,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:17,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278135613] [2021-06-06 00:16:17,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278135613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:17,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064442068] [2021-06-06 00:16:17,397 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 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:17,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:17,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:17,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064442068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:17,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:17,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:17,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238630239] [2021-06-06 00:16:17,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:17,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:17,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:17,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:17,507 INFO L87 Difference]: Start difference. First operand 45627 states and 176492 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:18,549 INFO L93 Difference]: Finished difference Result 59724 states and 226961 transitions. [2021-06-06 00:16:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:16:18,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:18,698 INFO L225 Difference]: With dead ends: 59724 [2021-06-06 00:16:18,699 INFO L226 Difference]: Without dead ends: 59724 [2021-06-06 00:16:18,699 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 639.1ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:16:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59724 states. [2021-06-06 00:16:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59724 to 45643. [2021-06-06 00:16:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45643 states, 45642 states have (on average 3.8701196266596556) internal successors, (176640), 45642 states have internal predecessors, (176640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45643 states to 45643 states and 176640 transitions. [2021-06-06 00:16:19,906 INFO L78 Accepts]: Start accepts. Automaton has 45643 states and 176640 transitions. Word has length 28 [2021-06-06 00:16:19,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:19,906 INFO L482 AbstractCegarLoop]: Abstraction has 45643 states and 176640 transitions. [2021-06-06 00:16:19,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 45643 states and 176640 transitions. [2021-06-06 00:16:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:19,969 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:19,969 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:20,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4014,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:20,170 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:20,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:20,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1775748157, now seen corresponding path program 158 times [2021-06-06 00:16:20,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:20,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280318262] [2021-06-06 00:16:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:20,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:20,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280318262] [2021-06-06 00:16:20,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280318262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:20,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597933277] [2021-06-06 00:16:20,203 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 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:20,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:20,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:20,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:20,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:20,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597933277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:20,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:20,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:20,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138392145] [2021-06-06 00:16:20,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:20,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:20,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:20,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:20,295 INFO L87 Difference]: Start difference. First operand 45643 states and 176640 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:21,174 INFO L93 Difference]: Finished difference Result 59038 states and 225086 transitions. [2021-06-06 00:16:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:16:21,174 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:21,318 INFO L225 Difference]: With dead ends: 59038 [2021-06-06 00:16:21,319 INFO L226 Difference]: Without dead ends: 59026 [2021-06-06 00:16:21,319 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 308.7ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:16:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59026 states. [2021-06-06 00:16:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59026 to 45577. [2021-06-06 00:16:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45577 states, 45576 states have (on average 3.8712699666491135) internal successors, (176437), 45576 states have internal predecessors, (176437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:22,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45577 states to 45577 states and 176437 transitions. [2021-06-06 00:16:22,533 INFO L78 Accepts]: Start accepts. Automaton has 45577 states and 176437 transitions. Word has length 28 [2021-06-06 00:16:22,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:22,534 INFO L482 AbstractCegarLoop]: Abstraction has 45577 states and 176437 transitions. [2021-06-06 00:16:22,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 45577 states and 176437 transitions. [2021-06-06 00:16:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:22,603 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:22,603 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:22,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4015,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:22,803 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash 517999999, now seen corresponding path program 159 times [2021-06-06 00:16:22,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:22,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131309042] [2021-06-06 00:16:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:22,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:22,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131309042] [2021-06-06 00:16:22,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131309042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:22,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73605798] [2021-06-06 00:16:22,839 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 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:22,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:16:22,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:22,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:22,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:22,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73605798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:22,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:22,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:22,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180405064] [2021-06-06 00:16:22,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:22,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:22,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:22,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:22,938 INFO L87 Difference]: Start difference. First operand 45577 states and 176437 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:23,523 INFO L93 Difference]: Finished difference Result 50058 states and 191219 transitions. [2021-06-06 00:16:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:16:23,523 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:23,890 INFO L225 Difference]: With dead ends: 50058 [2021-06-06 00:16:23,890 INFO L226 Difference]: Without dead ends: 50058 [2021-06-06 00:16:23,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 269.7ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:16:23,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50058 states. [2021-06-06 00:16:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50058 to 45785. [2021-06-06 00:16:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45785 states, 45784 states have (on average 3.8687969596365543) internal successors, (177129), 45784 states have internal predecessors, (177129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45785 states to 45785 states and 177129 transitions. [2021-06-06 00:16:24,998 INFO L78 Accepts]: Start accepts. Automaton has 45785 states and 177129 transitions. Word has length 28 [2021-06-06 00:16:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:24,998 INFO L482 AbstractCegarLoop]: Abstraction has 45785 states and 177129 transitions. [2021-06-06 00:16:24,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 45785 states and 177129 transitions. [2021-06-06 00:16:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:25,062 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:25,062 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:25,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4016,239 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:25,263 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash -480567967, now seen corresponding path program 160 times [2021-06-06 00:16:25,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:25,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950951555] [2021-06-06 00:16:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:25,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:25,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950951555] [2021-06-06 00:16:25,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950951555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:25,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792672545] [2021-06-06 00:16:25,301 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 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:25,329 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:25,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:25,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:25,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:25,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792672545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:25,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:25,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:16:25,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269141045] [2021-06-06 00:16:25,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:25,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:25,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:25,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:25,400 INFO L87 Difference]: Start difference. First operand 45785 states and 177129 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:25,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:25,915 INFO L93 Difference]: Finished difference Result 49905 states and 190821 transitions. [2021-06-06 00:16:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:16:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:26,035 INFO L225 Difference]: With dead ends: 49905 [2021-06-06 00:16:26,035 INFO L226 Difference]: Without dead ends: 49901 [2021-06-06 00:16:26,035 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 212.9ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:16:26,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49901 states. [2021-06-06 00:16:26,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49901 to 45725. [2021-06-06 00:16:26,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45725 states, 45724 states have (on average 3.869674569154055) internal successors, (176937), 45724 states have internal predecessors, (176937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45725 states to 45725 states and 176937 transitions. [2021-06-06 00:16:27,112 INFO L78 Accepts]: Start accepts. Automaton has 45725 states and 176937 transitions. Word has length 28 [2021-06-06 00:16:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:27,112 INFO L482 AbstractCegarLoop]: Abstraction has 45725 states and 176937 transitions. [2021-06-06 00:16:27,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 45725 states and 176937 transitions. [2021-06-06 00:16:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:27,175 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:27,175 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:27,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4017 [2021-06-06 00:16:27,376 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:27,376 INFO L82 PathProgramCache]: Analyzing trace with hash -510371023, now seen corresponding path program 80 times [2021-06-06 00:16:27,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:27,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487909198] [2021-06-06 00:16:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:27,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:27,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487909198] [2021-06-06 00:16:27,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487909198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:27,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022766838] [2021-06-06 00:16:27,409 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 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:27,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:27,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:27,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:27,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:27,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022766838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:27,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:27,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:16:27,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307216356] [2021-06-06 00:16:27,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:27,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:27,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:27,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:27,477 INFO L87 Difference]: Start difference. First operand 45725 states and 176937 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2021-06-06 00:16:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:28,219 INFO L93 Difference]: Finished difference Result 49960 states and 190934 transitions. [2021-06-06 00:16:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:16:28,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 28 [2021-06-06 00:16:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:28,350 INFO L225 Difference]: With dead ends: 49960 [2021-06-06 00:16:28,350 INFO L226 Difference]: Without dead ends: 49960 [2021-06-06 00:16:28,350 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 188.1ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:16:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49960 states. [2021-06-06 00:16:29,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49960 to 45829. [2021-06-06 00:16:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45829 states, 45828 states have (on average 3.86796281749149) internal successors, (177261), 45828 states have internal predecessors, (177261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:29,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45829 states to 45829 states and 177261 transitions. [2021-06-06 00:16:29,443 INFO L78 Accepts]: Start accepts. Automaton has 45829 states and 177261 transitions. Word has length 28 [2021-06-06 00:16:29,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:29,444 INFO L482 AbstractCegarLoop]: Abstraction has 45829 states and 177261 transitions. [2021-06-06 00:16:29,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2021-06-06 00:16:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 45829 states and 177261 transitions. [2021-06-06 00:16:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:29,509 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:29,509 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:29,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4018,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:29,709 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash 394977929, now seen corresponding path program 81 times [2021-06-06 00:16:29,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:29,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398246429] [2021-06-06 00:16:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:16:29,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:29,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398246429] [2021-06-06 00:16:29,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398246429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:29,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387580553] [2021-06-06 00:16:29,737 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 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:29,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:16:29,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:29,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:29,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 00:16:29,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387580553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:29,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:29,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-06 00:16:29,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974949549] [2021-06-06 00:16:29,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:16:29,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:29,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:16:29,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:16:29,797 INFO L87 Difference]: Start difference. First operand 45829 states and 177261 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) [2021-06-06 00:16:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:30,199 INFO L93 Difference]: Finished difference Result 50055 states and 191371 transitions. [2021-06-06 00:16:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:16:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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 28 [2021-06-06 00:16:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:30,318 INFO L225 Difference]: With dead ends: 50055 [2021-06-06 00:16:30,318 INFO L226 Difference]: Without dead ends: 50043 [2021-06-06 00:16:30,318 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:16:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50043 states. [2021-06-06 00:16:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50043 to 45961. [2021-06-06 00:16:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45961 states, 45960 states have (on average 3.866166231505657) internal successors, (177689), 45960 states have internal predecessors, (177689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45961 states to 45961 states and 177689 transitions. [2021-06-06 00:16:31,472 INFO L78 Accepts]: Start accepts. Automaton has 45961 states and 177689 transitions. Word has length 28 [2021-06-06 00:16:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:31,472 INFO L482 AbstractCegarLoop]: Abstraction has 45961 states and 177689 transitions. [2021-06-06 00:16:31,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 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) [2021-06-06 00:16:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 45961 states and 177689 transitions. [2021-06-06 00:16:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:31,538 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:31,538 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:31,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4019,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:31,739 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:31,739 INFO L82 PathProgramCache]: Analyzing trace with hash -597515635, now seen corresponding path program 82 times [2021-06-06 00:16:31,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:31,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902323875] [2021-06-06 00:16:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:31,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:31,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902323875] [2021-06-06 00:16:31,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902323875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:31,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203231529] [2021-06-06 00:16:31,772 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 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:31,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:31,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:31,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:31,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:31,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203231529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:31,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:31,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:16:31,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660391918] [2021-06-06 00:16:31,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:31,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:31,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:31,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:31,833 INFO L87 Difference]: Start difference. First operand 45961 states and 177689 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2021-06-06 00:16:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:32,517 INFO L93 Difference]: Finished difference Result 50019 states and 191287 transitions. [2021-06-06 00:16:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:16:32,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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 28 [2021-06-06 00:16:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:32,637 INFO L225 Difference]: With dead ends: 50019 [2021-06-06 00:16:32,637 INFO L226 Difference]: Without dead ends: 49999 [2021-06-06 00:16:32,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:16:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49999 states. [2021-06-06 00:16:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49999 to 45961. [2021-06-06 00:16:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45961 states, 45960 states have (on average 3.8660791993037424) internal successors, (177685), 45960 states have internal predecessors, (177685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45961 states to 45961 states and 177685 transitions. [2021-06-06 00:16:33,758 INFO L78 Accepts]: Start accepts. Automaton has 45961 states and 177685 transitions. Word has length 28 [2021-06-06 00:16:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:33,758 INFO L482 AbstractCegarLoop]: Abstraction has 45961 states and 177685 transitions. [2021-06-06 00:16:33,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 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) [2021-06-06 00:16:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 45961 states and 177685 transitions. [2021-06-06 00:16:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:33,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:33,822 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:34,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4020 [2021-06-06 00:16:34,023 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:34,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:34,023 INFO L82 PathProgramCache]: Analyzing trace with hash 970045237, now seen corresponding path program 161 times [2021-06-06 00:16:34,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:34,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025948782] [2021-06-06 00:16:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:34,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:34,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:34,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025948782] [2021-06-06 00:16:34,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025948782] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:34,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101184908] [2021-06-06 00:16:34,053 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 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:34,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:16:34,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:34,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:34,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:34,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101184908] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:34,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:34,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:16:34,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359194203] [2021-06-06 00:16:34,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:34,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:34,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:34,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:34,127 INFO L87 Difference]: Start difference. First operand 45961 states and 177685 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:34,540 INFO L93 Difference]: Finished difference Result 50922 states and 195250 transitions. [2021-06-06 00:16:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:16:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:16:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:34,666 INFO L225 Difference]: With dead ends: 50922 [2021-06-06 00:16:34,666 INFO L226 Difference]: Without dead ends: 50909 [2021-06-06 00:16:34,666 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:16:34,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50909 states. [2021-06-06 00:16:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50909 to 48694. [2021-06-06 00:16:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48694 states, 48693 states have (on average 3.8747458566939805) internal successors, (188673), 48693 states have internal predecessors, (188673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:35,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48694 states to 48694 states and 188673 transitions. [2021-06-06 00:16:35,889 INFO L78 Accepts]: Start accepts. Automaton has 48694 states and 188673 transitions. Word has length 28 [2021-06-06 00:16:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:35,889 INFO L482 AbstractCegarLoop]: Abstraction has 48694 states and 188673 transitions. [2021-06-06 00:16:35,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:35,889 INFO L276 IsEmpty]: Start isEmpty. Operand 48694 states and 188673 transitions. [2021-06-06 00:16:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:36,201 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:36,201 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:36,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4021 [2021-06-06 00:16:36,411 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash 287300907, now seen corresponding path program 162 times [2021-06-06 00:16:36,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:36,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460957828] [2021-06-06 00:16:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:36,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:36,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460957828] [2021-06-06 00:16:36,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460957828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:36,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947642669] [2021-06-06 00:16:36,440 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 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:36,474 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:16:36,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:36,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:36,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:36,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947642669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:36,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:36,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:16:36,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211336619] [2021-06-06 00:16:36,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:36,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:36,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:36,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:36,542 INFO L87 Difference]: Start difference. First operand 48694 states and 188673 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:37,001 INFO L93 Difference]: Finished difference Result 54270 states and 206696 transitions. [2021-06-06 00:16:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:16:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:16:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:37,133 INFO L225 Difference]: With dead ends: 54270 [2021-06-06 00:16:37,133 INFO L226 Difference]: Without dead ends: 54270 [2021-06-06 00:16:37,133 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 160.7ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:16:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54270 states. [2021-06-06 00:16:38,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54270 to 43234. [2021-06-06 00:16:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43234 states, 43233 states have (on average 3.86188790969861) internal successors, (166961), 43233 states have internal predecessors, (166961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43234 states to 43234 states and 166961 transitions. [2021-06-06 00:16:38,217 INFO L78 Accepts]: Start accepts. Automaton has 43234 states and 166961 transitions. Word has length 28 [2021-06-06 00:16:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:38,217 INFO L482 AbstractCegarLoop]: Abstraction has 43234 states and 166961 transitions. [2021-06-06 00:16:38,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 43234 states and 166961 transitions. [2021-06-06 00:16:38,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:38,277 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:38,277 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:38,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4022 [2021-06-06 00:16:38,478 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:38,478 INFO L82 PathProgramCache]: Analyzing trace with hash -32817557, now seen corresponding path program 163 times [2021-06-06 00:16:38,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:38,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494311065] [2021-06-06 00:16:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:38,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:38,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494311065] [2021-06-06 00:16:38,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494311065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:38,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333074262] [2021-06-06 00:16:38,512 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 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:38,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:38,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:38,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333074262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:38,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:38,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:16:38,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790002334] [2021-06-06 00:16:38,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:38,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:38,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:38,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:38,587 INFO L87 Difference]: Start difference. First operand 43234 states and 166961 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:39,063 INFO L93 Difference]: Finished difference Result 48110 states and 183380 transitions. [2021-06-06 00:16:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:16:39,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:16:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:39,392 INFO L225 Difference]: With dead ends: 48110 [2021-06-06 00:16:39,393 INFO L226 Difference]: Without dead ends: 48110 [2021-06-06 00:16:39,393 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:16:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48110 states. [2021-06-06 00:16:40,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48110 to 44067. [2021-06-06 00:16:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44067 states, 44066 states have (on average 3.8605500839649616) internal successors, (170119), 44066 states have internal predecessors, (170119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44067 states to 44067 states and 170119 transitions. [2021-06-06 00:16:40,249 INFO L78 Accepts]: Start accepts. Automaton has 44067 states and 170119 transitions. Word has length 28 [2021-06-06 00:16:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:40,249 INFO L482 AbstractCegarLoop]: Abstraction has 44067 states and 170119 transitions. [2021-06-06 00:16:40,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 44067 states and 170119 transitions. [2021-06-06 00:16:40,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:40,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:40,559 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:40,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4023,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:40,759 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:40,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1041987733, now seen corresponding path program 164 times [2021-06-06 00:16:40,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:40,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227058945] [2021-06-06 00:16:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:40,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:40,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227058945] [2021-06-06 00:16:40,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227058945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:40,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566701288] [2021-06-06 00:16:40,794 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 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:40,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:40,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:40,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:40,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566701288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:40,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:40,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:16:40,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44873381] [2021-06-06 00:16:40,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:40,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:40,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:40,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:40,866 INFO L87 Difference]: Start difference. First operand 44067 states and 170119 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:41,245 INFO L93 Difference]: Finished difference Result 45824 states and 175980 transitions. [2021-06-06 00:16:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:16:41,246 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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 28 [2021-06-06 00:16:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:41,345 INFO L225 Difference]: With dead ends: 45824 [2021-06-06 00:16:41,345 INFO L226 Difference]: Without dead ends: 45824 [2021-06-06 00:16:41,345 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:16:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45824 states. [2021-06-06 00:16:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45824 to 44075. [2021-06-06 00:16:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44075 states, 44074 states have (on average 3.8603938830149294) internal successors, (170143), 44074 states have internal predecessors, (170143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44075 states to 44075 states and 170143 transitions. [2021-06-06 00:16:42,285 INFO L78 Accepts]: Start accepts. Automaton has 44075 states and 170143 transitions. Word has length 28 [2021-06-06 00:16:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:42,285 INFO L482 AbstractCegarLoop]: Abstraction has 44075 states and 170143 transitions. [2021-06-06 00:16:42,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 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) [2021-06-06 00:16:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44075 states and 170143 transitions. [2021-06-06 00:16:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:42,346 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:42,346 INFO L554 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:42,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4024 [2021-06-06 00:16:42,547 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:42,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1139256197, now seen corresponding path program 165 times [2021-06-06 00:16:42,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:42,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861994337] [2021-06-06 00:16:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:42,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:42,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861994337] [2021-06-06 00:16:42,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861994337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:42,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886784618] [2021-06-06 00:16:42,579 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 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:42,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:16:42,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:42,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:42,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:42,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886784618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:42,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:42,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:16:42,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401605493] [2021-06-06 00:16:42,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:42,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:42,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:42,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:42,655 INFO L87 Difference]: Start difference. First operand 44075 states and 170143 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:43,034 INFO L93 Difference]: Finished difference Result 45544 states and 175058 transitions. [2021-06-06 00:16:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:16:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 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 28 [2021-06-06 00:16:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:43,134 INFO L225 Difference]: With dead ends: 45544 [2021-06-06 00:16:43,134 INFO L226 Difference]: Without dead ends: 45544 [2021-06-06 00:16:43,134 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:16:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45544 states. [2021-06-06 00:16:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45544 to 43969. [2021-06-06 00:16:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43969 states, 43968 states have (on average 3.86005731441048) internal successors, (169719), 43968 states have internal predecessors, (169719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43969 states to 43969 states and 169719 transitions. [2021-06-06 00:16:44,101 INFO L78 Accepts]: Start accepts. Automaton has 43969 states and 169719 transitions. Word has length 28 [2021-06-06 00:16:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:44,101 INFO L482 AbstractCegarLoop]: Abstraction has 43969 states and 169719 transitions. [2021-06-06 00:16:44,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 43969 states and 169719 transitions. [2021-06-06 00:16:44,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:16:44,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:44,164 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:44,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4025,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:44,369 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash -993746325, now seen corresponding path program 166 times [2021-06-06 00:16:44,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:44,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811215540] [2021-06-06 00:16:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:44,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:44,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811215540] [2021-06-06 00:16:44,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811215540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:44,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040980757] [2021-06-06 00:16:44,857 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 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:45,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:45,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:45,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:16:45,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:45,437 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-06 00:16:45,627 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:16:46,090 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-06-06 00:16:46,285 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:16:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:46,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:46,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:46,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:46,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:16:46,673 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:46,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:46,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:46,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:46,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:16:46,682 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,054 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 112 [2021-06-06 00:16:47,055 INFO L628 ElimStorePlain]: treesize reduction 342, result has 42.4 percent of original size [2021-06-06 00:16:47,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:47,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:16:47,062 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,143 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:16:47,150 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,223 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:47,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:47,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:16:47,231 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:47,299 INFO L518 ElimStorePlain]: Eliminatee v_prenex_518 vanished before elimination [2021-06-06 00:16:47,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:47,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:16:47,306 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:16:47,373 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:47,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:47,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:47,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:16:47,433 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:47,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:47,485 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:16:47,485 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:668, output treesize:42 [2021-06-06 00:16:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:47,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040980757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:47,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:47,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:16:47,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741580597] [2021-06-06 00:16:47,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:16:47,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:47,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:16:47,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:16:47,523 INFO L87 Difference]: Start difference. First operand 43969 states and 169719 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:47,887 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-06 00:16:48,203 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2021-06-06 00:16:48,519 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2021-06-06 00:16:48,715 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 73 [2021-06-06 00:16:48,888 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2021-06-06 00:16:49,508 WARN L205 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2021-06-06 00:16:49,938 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2021-06-06 00:16:50,677 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 88 [2021-06-06 00:16:51,030 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 106 [2021-06-06 00:16:51,394 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 107 [2021-06-06 00:16:52,090 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 141 [2021-06-06 00:16:52,351 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2021-06-06 00:16:52,579 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2021-06-06 00:16:52,764 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-06 00:16:53,071 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-06-06 00:16:53,263 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2021-06-06 00:16:53,681 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2021-06-06 00:16:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:53,896 INFO L93 Difference]: Finished difference Result 53961 states and 204236 transitions. [2021-06-06 00:16:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:16:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:16:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:54,037 INFO L225 Difference]: With dead ends: 53961 [2021-06-06 00:16:54,037 INFO L226 Difference]: Without dead ends: 53886 [2021-06-06 00:16:54,038 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 6891.5ms TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:16:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53886 states. [2021-06-06 00:16:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53886 to 44104. [2021-06-06 00:16:54,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44104 states, 44103 states have (on average 3.8592386005487156) internal successors, (170204), 44103 states have internal predecessors, (170204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44104 states to 44104 states and 170204 transitions. [2021-06-06 00:16:55,042 INFO L78 Accepts]: Start accepts. Automaton has 44104 states and 170204 transitions. Word has length 30 [2021-06-06 00:16:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:55,042 INFO L482 AbstractCegarLoop]: Abstraction has 44104 states and 170204 transitions. [2021-06-06 00:16:55,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 44104 states and 170204 transitions. [2021-06-06 00:16:55,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:16:55,254 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:55,254 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:16:55,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4026,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:55,454 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1272822955, now seen corresponding path program 167 times [2021-06-06 00:16:55,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:55,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544270507] [2021-06-06 00:16:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:55,671 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2021-06-06 00:16:55,836 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2021-06-06 00:16:55,994 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-06 00:16:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:56,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:56,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544270507] [2021-06-06 00:16:56,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544270507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:56,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966501818] [2021-06-06 00:16:56,214 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 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:56,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:16:56,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:56,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:16:56,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:56,542 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-06 00:16:56,733 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:16:57,014 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-06 00:16:57,301 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:16:57,902 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 117 [2021-06-06 00:16:57,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:58,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:16:58,004 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:58,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:16:58,012 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,375 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 111 [2021-06-06 00:16:58,375 INFO L628 ElimStorePlain]: treesize reduction 176, result has 59.1 percent of original size [2021-06-06 00:16:58,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:58,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:16:58,383 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,473 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:58,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:16:58,480 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:16:58,565 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:58,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:58,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:16:58,644 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:58,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:16:58,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:16:58,714 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:16:58,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:16:58,777 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:16:58,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:16:58,829 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:16:58,829 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 21 variables, input treesize:504, output treesize:40 [2021-06-06 00:16:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:16:58,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966501818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:58,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:58,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:16:58,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279348943] [2021-06-06 00:16:58,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:16:58,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:58,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:16:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:16:58,872 INFO L87 Difference]: Start difference. First operand 44104 states and 170204 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:59,518 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-06 00:16:59,856 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-06 00:17:00,168 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2021-06-06 00:17:00,339 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2021-06-06 00:17:01,042 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 104 [2021-06-06 00:17:01,730 WARN L205 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2021-06-06 00:17:01,888 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2021-06-06 00:17:02,054 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-06-06 00:17:02,708 WARN L205 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 111 [2021-06-06 00:17:03,153 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 109 [2021-06-06 00:17:03,687 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 110 [2021-06-06 00:17:03,894 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 56 [2021-06-06 00:17:04,174 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-06 00:17:04,964 WARN L205 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 143 [2021-06-06 00:17:05,128 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2021-06-06 00:17:05,281 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2021-06-06 00:17:05,660 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2021-06-06 00:17:05,801 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 38 [2021-06-06 00:17:06,113 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2021-06-06 00:17:06,414 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2021-06-06 00:17:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:06,658 INFO L93 Difference]: Finished difference Result 54018 states and 204458 transitions. [2021-06-06 00:17:06,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:17:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:17:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:06,794 INFO L225 Difference]: With dead ends: 54018 [2021-06-06 00:17:06,794 INFO L226 Difference]: Without dead ends: 53949 [2021-06-06 00:17:06,795 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 8549.6ms TimeCoverageRelationStatistics Valid=567, Invalid=2625, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:17:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53949 states. [2021-06-06 00:17:07,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53949 to 44115. [2021-06-06 00:17:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44115 states, 44114 states have (on average 3.8592510314185975) internal successors, (170247), 44114 states have internal predecessors, (170247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44115 states to 44115 states and 170247 transitions. [2021-06-06 00:17:07,811 INFO L78 Accepts]: Start accepts. Automaton has 44115 states and 170247 transitions. Word has length 30 [2021-06-06 00:17:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:07,811 INFO L482 AbstractCegarLoop]: Abstraction has 44115 states and 170247 transitions. [2021-06-06 00:17:07,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 44115 states and 170247 transitions. [2021-06-06 00:17:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:17:07,876 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:07,876 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:17:08,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-06 00:17:08,076 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:08,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:08,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1430715033, now seen corresponding path program 168 times [2021-06-06 00:17:08,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:08,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15699969] [2021-06-06 00:17:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:08,566 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2021-06-06 00:17:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:17:08,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:08,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15699969] [2021-06-06 00:17:08,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15699969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:08,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831726694] [2021-06-06 00:17:08,790 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 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:08,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:17:08,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:08,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:17:08,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:09,244 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:17:09,462 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-06-06 00:17:09,645 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2021-06-06 00:17:10,005 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:17:10,937 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-06-06 00:17:11,728 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 200 [2021-06-06 00:17:12,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-06 00:17:12,094 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:12,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:17:12,108 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:12,552 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 162 [2021-06-06 00:17:12,553 INFO L628 ElimStorePlain]: treesize reduction 503, result has 40.0 percent of original size [2021-06-06 00:17:12,553 INFO L518 ElimStorePlain]: Eliminatee A vanished before elimination [2021-06-06 00:17:12,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:17:12,565 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:12,676 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-06 00:17:12,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:12,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:17:12,687 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:12,790 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-06 00:17:12,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:12,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:17:12,799 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:12,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:12,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:17:12,901 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:12,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:12,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:12,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:17:12,994 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:13,071 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:13,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:13,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:13,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:13,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:17:13,080 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:13,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:13,154 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:17:13,155 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 40 variables, input treesize:939, output treesize:40 [2021-06-06 00:17:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:17:13,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831726694] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:13,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:13,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:17:13,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152459117] [2021-06-06 00:17:13,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:17:13,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:13,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:17:13,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:17:13,209 INFO L87 Difference]: Start difference. First operand 44115 states and 170247 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:13,817 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2021-06-06 00:17:14,103 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 88 [2021-06-06 00:17:14,355 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-06 00:17:14,904 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 109 [2021-06-06 00:17:15,056 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2021-06-06 00:17:15,463 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-06-06 00:17:15,792 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 93 [2021-06-06 00:17:15,993 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2021-06-06 00:17:16,725 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 107 [2021-06-06 00:17:18,400 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 230 DAG size of output: 158 [2021-06-06 00:17:18,576 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2021-06-06 00:17:18,880 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 92 [2021-06-06 00:17:19,056 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-06 00:17:19,438 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 96 [2021-06-06 00:17:20,340 WARN L205 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 120 [2021-06-06 00:17:20,988 WARN L205 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 117 [2021-06-06 00:17:21,770 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 113 [2021-06-06 00:17:22,094 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-06-06 00:17:22,962 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 118 [2021-06-06 00:17:24,972 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 240 DAG size of output: 153 [2021-06-06 00:17:26,882 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 253 DAG size of output: 166 [2021-06-06 00:17:27,780 WARN L205 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2021-06-06 00:17:29,764 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 250 DAG size of output: 167 [2021-06-06 00:17:30,710 WARN L205 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 111 [2021-06-06 00:17:32,645 WARN L205 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 233 DAG size of output: 162 [2021-06-06 00:17:34,684 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 246 DAG size of output: 164 [2021-06-06 00:17:35,086 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2021-06-06 00:17:35,564 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 141 [2021-06-06 00:17:38,641 WARN L205 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 243 DAG size of output: 157 [2021-06-06 00:17:41,445 WARN L205 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 256 DAG size of output: 159 [2021-06-06 00:17:41,772 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-06-06 00:17:41,949 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2021-06-06 00:17:42,277 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 143 [2021-06-06 00:17:42,782 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 145 [2021-06-06 00:17:45,141 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 318 DAG size of output: 214 [2021-06-06 00:17:45,828 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 107 [2021-06-06 00:17:46,521 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 319 DAG size of output: 118 [2021-06-06 00:17:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:46,840 INFO L93 Difference]: Finished difference Result 55978 states and 209840 transitions. [2021-06-06 00:17:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:17:46,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:17:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:46,969 INFO L225 Difference]: With dead ends: 55978 [2021-06-06 00:17:46,969 INFO L226 Difference]: Without dead ends: 55895 [2021-06-06 00:17:46,969 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 32990.1ms TimeCoverageRelationStatistics Valid=678, Invalid=4434, Unknown=0, NotChecked=0, Total=5112 [2021-06-06 00:17:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55895 states. [2021-06-06 00:17:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55895 to 44185. [2021-06-06 00:17:47,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44185 states, 44184 states have (on average 3.858387651638602) internal successors, (170479), 44184 states have internal predecessors, (170479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44185 states to 44185 states and 170479 transitions. [2021-06-06 00:17:47,965 INFO L78 Accepts]: Start accepts. Automaton has 44185 states and 170479 transitions. Word has length 30 [2021-06-06 00:17:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:47,965 INFO L482 AbstractCegarLoop]: Abstraction has 44185 states and 170479 transitions. [2021-06-06 00:17:47,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 44185 states and 170479 transitions. [2021-06-06 00:17:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:17:48,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:48,031 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:17:48,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-06 00:17:48,232 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash -625667857, now seen corresponding path program 169 times [2021-06-06 00:17:48,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:48,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155405501] [2021-06-06 00:17:48,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:48,441 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2021-06-06 00:17:48,555 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-06 00:17:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:17:48,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:48,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155405501] [2021-06-06 00:17:48,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155405501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:48,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944430609] [2021-06-06 00:17:48,783 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 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:48,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:17:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:49,104 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-06 00:17:49,297 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:17:49,589 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-06 00:17:50,001 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-06 00:17:50,840 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 103 [2021-06-06 00:17:50,930 INFO L446 ElimStorePlain]: Different costs {5=[A, v_prenex_638, v_prenex_629, v_prenex_640, v_prenex_631, v_prenex_642, v_prenex_633], 6=[v_prenex_636]} [2021-06-06 00:17:50,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:50,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:50,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:50,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-06 00:17:50,940 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,277 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 128 [2021-06-06 00:17:51,278 INFO L628 ElimStorePlain]: treesize reduction 181, result has 64.4 percent of original size [2021-06-06 00:17:51,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:51,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:17:51,287 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,410 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:17:51,410 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:51,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:17:51,422 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:51,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:17:51,430 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,602 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2021-06-06 00:17:51,603 INFO L628 ElimStorePlain]: treesize reduction 18, result has 93.1 percent of original size [2021-06-06 00:17:51,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:51,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:17:51,611 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,690 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:51,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:17:51,698 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,770 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:51,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:17:51,778 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,844 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:51,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:17:51,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:17:51,851 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:51,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:17:51,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-06-06 00:17:51,919 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:17:51,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:17:51,981 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:17:51,981 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 24 variables, input treesize:539, output treesize:43 [2021-06-06 00:17:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:17:52,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944430609] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:52,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:52,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:17:52,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307899349] [2021-06-06 00:17:52,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:17:52,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:52,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:17:52,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:17:52,026 INFO L87 Difference]: Start difference. First operand 44185 states and 170479 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:52,659 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2021-06-06 00:17:53,246 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 75 [2021-06-06 00:17:53,548 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 53 [2021-06-06 00:17:53,708 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2021-06-06 00:17:53,877 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2021-06-06 00:17:54,559 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2021-06-06 00:17:55,012 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 72 [2021-06-06 00:17:55,238 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2021-06-06 00:17:55,456 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2021-06-06 00:17:56,068 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 89 [2021-06-06 00:17:56,318 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-06 00:17:56,686 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 112 [2021-06-06 00:17:56,830 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 45 [2021-06-06 00:17:57,273 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 115 [2021-06-06 00:17:57,544 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-06-06 00:17:58,264 WARN L205 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 122 [2021-06-06 00:17:59,751 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 209 DAG size of output: 125 [2021-06-06 00:18:00,562 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 133 [2021-06-06 00:18:00,782 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 41 [2021-06-06 00:18:01,000 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 46 [2021-06-06 00:18:01,275 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2021-06-06 00:18:01,617 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2021-06-06 00:18:01,778 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2021-06-06 00:18:01,988 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 36 [2021-06-06 00:18:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:02,254 INFO L93 Difference]: Finished difference Result 53681 states and 198300 transitions. [2021-06-06 00:18:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:18:02,255 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:18:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:02,376 INFO L225 Difference]: With dead ends: 53681 [2021-06-06 00:18:02,376 INFO L226 Difference]: Without dead ends: 53591 [2021-06-06 00:18:02,377 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 10871.4ms TimeCoverageRelationStatistics Valid=734, Invalid=3048, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:18:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53591 states. [2021-06-06 00:18:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53591 to 44200. [2021-06-06 00:18:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44200 states, 44199 states have (on average 3.8580058372361368) internal successors, (170520), 44199 states have internal predecessors, (170520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44200 states to 44200 states and 170520 transitions. [2021-06-06 00:18:03,285 INFO L78 Accepts]: Start accepts. Automaton has 44200 states and 170520 transitions. Word has length 30 [2021-06-06 00:18:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:03,285 INFO L482 AbstractCegarLoop]: Abstraction has 44200 states and 170520 transitions. [2021-06-06 00:18:03,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 44200 states and 170520 transitions. [2021-06-06 00:18:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:18:03,352 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:03,352 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:18:03,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4200 [2021-06-06 00:18:03,552 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1938529707, now seen corresponding path program 170 times [2021-06-06 00:18:03,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:03,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600489462] [2021-06-06 00:18:03,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:03,814 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2021-06-06 00:18:03,941 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2021-06-06 00:18:04,063 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2021-06-06 00:18:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:18:04,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:04,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600489462] [2021-06-06 00:18:04,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600489462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:04,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346578828] [2021-06-06 00:18:04,218 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 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:04,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:18:04,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:04,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:18:04,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:04,594 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-06 00:18:04,802 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:18:05,503 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:18:07,012 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 376 DAG size of output: 360 [2021-06-06 00:18:07,560 INFO L446 ElimStorePlain]: Different costs {5=[v_prenex_690, v_prenex_691, v_prenex_681, v_prenex_692, v_prenex_682, v_prenex_683, v_prenex_695, v_prenex_684, v_prenex_696, v_prenex_697, v_prenex_687, v_prenex_689, v_prenex_701, v_prenex_702, A, v_prenex_703, v_prenex_706, v_prenex_707], 6=[v_prenex_685, v_prenex_698]} [2021-06-06 00:18:07,638 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:18:07,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-06 00:18:07,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:09,729 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 449 DAG size of output: 425 [2021-06-06 00:18:09,730 INFO L628 ElimStorePlain]: treesize reduction 416, result has 75.3 percent of original size [2021-06-06 00:18:09,815 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:18:09,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-06 00:18:09,827 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:11,380 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 422 DAG size of output: 417 [2021-06-06 00:18:11,381 INFO L628 ElimStorePlain]: treesize reduction 9, result has 99.3 percent of original size [2021-06-06 00:18:11,452 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:18:11,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 43 [2021-06-06 00:18:11,454 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:12,208 WARN L205 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2021-06-06 00:18:12,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:12,286 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:18:12,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-06 00:18:12,291 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:13,054 WARN L205 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 414 [2021-06-06 00:18:13,055 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:13,146 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:18:13,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:18:13,149 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:13,214 INFO L354 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2021-06-06 00:18:13,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 34 [2021-06-06 00:18:13,216 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:14,755 WARN L205 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 417 DAG size of output: 415 [2021-06-06 00:18:14,756 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.1 percent of original size [2021-06-06 00:18:14,838 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:18:14,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-06 00:18:14,845 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:16,376 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 419 DAG size of output: 418 [2021-06-06 00:18:16,377 INFO L628 ElimStorePlain]: treesize reduction 16, result has 98.7 percent of original size [2021-06-06 00:18:16,460 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:18:16,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-06 00:18:16,463 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:17,228 WARN L205 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 415 [2021-06-06 00:18:17,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:17,306 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:18:17,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-06 00:18:17,317 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:18,831 WARN L205 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 420 DAG size of output: 408 [2021-06-06 00:18:18,831 INFO L628 ElimStorePlain]: treesize reduction 36, result has 97.1 percent of original size [2021-06-06 00:18:18,912 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:18:18,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2021-06-06 00:18:18,928 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:20,352 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 404 DAG size of output: 399 [2021-06-06 00:18:20,353 INFO L628 ElimStorePlain]: treesize reduction 9, result has 99.2 percent of original size [2021-06-06 00:18:20,417 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:18:20,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:18:20,420 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:21,129 WARN L205 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2021-06-06 00:18:21,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:21,193 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:18:21,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 39 [2021-06-06 00:18:21,195 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:21,879 WARN L205 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2021-06-06 00:18:21,880 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:21,961 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:18:21,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-06 00:18:21,962 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:22,033 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:18:22,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-06 00:18:22,035 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:23,376 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 396 DAG size of output: 395 [2021-06-06 00:18:23,377 INFO L628 ElimStorePlain]: treesize reduction 47, result has 95.9 percent of original size [2021-06-06 00:18:23,466 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:18:23,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-06 00:18:23,480 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:23,561 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:18:23,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-06 00:18:23,569 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:24,866 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 404 DAG size of output: 389 [2021-06-06 00:18:24,867 INFO L628 ElimStorePlain]: treesize reduction 67, result has 94.0 percent of original size [2021-06-06 00:18:24,922 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:24,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2021-06-06 00:18:24,933 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:26,150 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 393 DAG size of output: 387 [2021-06-06 00:18:26,151 INFO L628 ElimStorePlain]: treesize reduction 25, result has 97.7 percent of original size [2021-06-06 00:18:26,219 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:18:26,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 43 [2021-06-06 00:18:26,222 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:26,825 WARN L205 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2021-06-06 00:18:26,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:26,897 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:18:26,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:18:26,908 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:28,114 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 387 DAG size of output: 377 [2021-06-06 00:18:28,115 INFO L628 ElimStorePlain]: treesize reduction 29, result has 97.2 percent of original size [2021-06-06 00:18:28,187 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:18:28,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-06 00:18:28,197 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:29,333 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 375 DAG size of output: 368 [2021-06-06 00:18:29,333 INFO L628 ElimStorePlain]: treesize reduction 16, result has 98.4 percent of original size [2021-06-06 00:18:29,409 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:18:29,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-06 00:18:29,417 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:29,452 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:18:29,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:18:29,452 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:30,470 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 372 DAG size of output: 361 [2021-06-06 00:18:30,471 INFO L628 ElimStorePlain]: treesize reduction 31, result has 96.8 percent of original size [2021-06-06 00:18:30,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:30,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:30,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57 [2021-06-06 00:18:30,537 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:31,038 WARN L205 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-06-06 00:18:31,038 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:31,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:31,092 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:18:31,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 48 [2021-06-06 00:18:31,097 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:31,601 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2021-06-06 00:18:31,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:31,676 INFO L550 ElimStorePlain]: Start of recursive call 1: 40 dim-0 vars, 20 dim-1 vars, End of recursive call: and 26 xjuncts. [2021-06-06 00:18:31,676 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 60 variables, input treesize:1689, output treesize:1117 [2021-06-06 00:18:31,981 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2021-06-06 00:18:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:18:32,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346578828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:32,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:32,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2021-06-06 00:18:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960565275] [2021-06-06 00:18:32,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:18:32,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:18:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:18:32,038 INFO L87 Difference]: Start difference. First operand 44200 states and 170520 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:32,559 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-06-06 00:18:32,878 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2021-06-06 00:18:33,425 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2021-06-06 00:18:33,710 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2021-06-06 00:18:33,919 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2021-06-06 00:18:34,134 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 53 [2021-06-06 00:18:34,592 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2021-06-06 00:18:34,826 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2021-06-06 00:18:35,117 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2021-06-06 00:18:35,989 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 142 [2021-06-06 00:18:36,719 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2021-06-06 00:18:36,947 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-06-06 00:18:38,029 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 132 [2021-06-06 00:18:38,405 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2021-06-06 00:18:38,613 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 48 [2021-06-06 00:18:39,516 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 138 [2021-06-06 00:18:40,973 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-06 00:18:43,237 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 420 DAG size of output: 397 [2021-06-06 00:18:43,467 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2021-06-06 00:18:44,667 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 419 DAG size of output: 211 [2021-06-06 00:18:44,934 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2021-06-06 00:18:45,148 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 42 [2021-06-06 00:18:45,378 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2021-06-06 00:18:45,623 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 43 [2021-06-06 00:18:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:45,997 INFO L93 Difference]: Finished difference Result 56880 states and 213210 transitions. [2021-06-06 00:18:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:18:45,998 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2021-06-06 00:18:45,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:46,130 INFO L225 Difference]: With dead ends: 56880 [2021-06-06 00:18:46,130 INFO L226 Difference]: Without dead ends: 56772 [2021-06-06 00:18:46,131 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 15130.7ms TimeCoverageRelationStatistics Valid=593, Invalid=3067, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:18:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56772 states. [2021-06-06 00:18:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56772 to 44239. [2021-06-06 00:18:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44239 states, 44238 states have (on average 3.857701523577015) internal successors, (170657), 44238 states have internal predecessors, (170657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44239 states to 44239 states and 170657 transitions. [2021-06-06 00:18:47,100 INFO L78 Accepts]: Start accepts. Automaton has 44239 states and 170657 transitions. Word has length 30 [2021-06-06 00:18:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:47,100 INFO L482 AbstractCegarLoop]: Abstraction has 44239 states and 170657 transitions. [2021-06-06 00:18:47,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 44239 states and 170657 transitions. [2021-06-06 00:18:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:18:47,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:47,164 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:18:47,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4229,253 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:47,365 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:47,365 INFO L82 PathProgramCache]: Analyzing trace with hash -806056025, now seen corresponding path program 171 times [2021-06-06 00:18:47,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:47,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164503936] [2021-06-06 00:18:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:47,616 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-06-06 00:18:47,761 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-06-06 00:18:47,965 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2021-06-06 00:18:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:18:48,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:48,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164503936] [2021-06-06 00:18:48,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164503936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:48,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112686614] [2021-06-06 00:18:48,092 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 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:48,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:18:48,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:48,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:18:48,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:49,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,847 INFO L354 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2021-06-06 00:18:49,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 38 [2021-06-06 00:18:49,849 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:49,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,871 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:49,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:49,872 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:49,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,914 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-06 00:18:49,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 42 [2021-06-06 00:18:49,918 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:49,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,943 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:49,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:18:49,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:49,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,987 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-06 00:18:49,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 40 [2021-06-06 00:18:49,989 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:49,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:49,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,013 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:18:50,014 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,038 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:50,038 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,079 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-06 00:18:50,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 37 [2021-06-06 00:18:50,082 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,111 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:50,112 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,155 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-06 00:18:50,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 43 [2021-06-06 00:18:50,158 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,200 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-06 00:18:50,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 39 [2021-06-06 00:18:50,201 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,226 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:50,227 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,250 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:18:50,251 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,276 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:18:50,277 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,304 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:50,305 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,328 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:18:50,328 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,391 INFO L354 Elim1Store]: treesize reduction 14, result has 68.9 percent of original size [2021-06-06 00:18:50,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 55 [2021-06-06 00:18:50,398 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,427 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:18:50,428 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,458 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:50,458 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,488 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:18:50,488 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,517 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-06 00:18:50,517 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,543 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:50,543 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:50,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 69 [2021-06-06 00:18:50,598 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,626 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:18:50,627 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,653 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:50,654 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,683 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:18:50,684 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,712 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:50,712 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,753 INFO L354 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2021-06-06 00:18:50,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 34 [2021-06-06 00:18:50,755 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,781 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:18:50,782 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,805 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:18:50,807 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,834 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:18:50,835 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,861 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:18:50,862 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,889 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:18:50,889 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,917 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 1 [2021-06-06 00:18:50,918 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,951 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 1 [2021-06-06 00:18:50,952 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,979 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:50,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:50,980 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:50,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:50,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,005 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:18:51,005 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,033 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 1 [2021-06-06 00:18:51,034 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,062 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:51,063 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,088 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:18:51,089 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,115 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:51,115 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,142 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-06 00:18:51,143 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,170 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:51,171 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,197 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:18:51,199 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,226 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 1 [2021-06-06 00:18:51,227 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,253 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:18:51,254 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,280 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 1 [2021-06-06 00:18:51,281 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,305 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:51,305 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,330 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:18:51,331 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,357 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 1 [2021-06-06 00:18:51,358 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,385 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 1 [2021-06-06 00:18:51,385 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,411 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:51,412 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,438 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 1 [2021-06-06 00:18:51,439 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,463 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 1 [2021-06-06 00:18:51,464 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:18:51,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 60 [2021-06-06 00:18:51,510 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,537 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:18:51,537 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,561 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 25 [2021-06-06 00:18:51,562 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,586 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 1 [2021-06-06 00:18:51,587 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,610 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:18:51,611 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,635 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:18:51,636 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,659 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 1 [2021-06-06 00:18:51,659 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,681 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:18:51,682 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,715 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2021-06-06 00:18:51,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 29 [2021-06-06 00:18:51,717 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:18:51,728 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:18:51,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 1 [2021-06-06 00:18:51,729 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-06 00:18:51,869 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-06-06 00:18:51,869 INFO L628 ElimStorePlain]: treesize reduction 230, result has 39.6 percent of original size [2021-06-06 00:18:51,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:18:51,872 INFO L247 ElimStorePlain]: Needed 65 recursive calls to eliminate 2 variables, input treesize:3969, output treesize:177 [2021-06-06 00:18:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:18:52,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112686614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:52,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:52,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:18:52,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235615642] [2021-06-06 00:18:52,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:18:52,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:52,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:18:52,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:18:52,018 INFO L87 Difference]: Start difference. First operand 44239 states and 170657 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:52,683 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-06-06 00:18:53,315 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2021-06-06 00:18:53,839 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 72 [2021-06-06 00:18:54,031 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-06-06 00:18:54,274 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2021-06-06 00:18:54,463 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2021-06-06 00:18:54,619 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2021-06-06 00:18:54,961 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2021-06-06 00:18:55,323 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 97 [2021-06-06 00:18:55,693 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2021-06-06 00:18:55,928 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-06-06 00:18:56,270 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2021-06-06 00:18:56,551 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 90 [2021-06-06 00:18:56,691 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-06-06 00:18:56,943 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2021-06-06 00:18:57,185 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2021-06-06 00:18:57,405 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2021-06-06 00:18:57,761 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2021-06-06 00:18:58,151 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2021-06-06 00:18:58,458 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-06-06 00:18:58,818 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2021-06-06 00:18:58,981 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2021-06-06 00:18:59,237 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2021-06-06 00:18:59,742 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2021-06-06 00:19:00,272 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2021-06-06 00:19:00,560 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2021-06-06 00:19:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:00,974 INFO L93 Difference]: Finished difference Result 62789 states and 233965 transitions. [2021-06-06 00:19:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:19:00,975 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:19:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:01,120 INFO L225 Difference]: With dead ends: 62789 [2021-06-06 00:19:01,120 INFO L226 Difference]: Without dead ends: 62759 [2021-06-06 00:19:01,121 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 8615.5ms TimeCoverageRelationStatistics Valid=701, Invalid=4999, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:19:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62759 states. [2021-06-06 00:19:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62759 to 44280. [2021-06-06 00:19:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44280 states, 44279 states have (on average 3.8575622755708125) internal successors, (170809), 44279 states have internal predecessors, (170809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44280 states to 44280 states and 170809 transitions. [2021-06-06 00:19:02,287 INFO L78 Accepts]: Start accepts. Automaton has 44280 states and 170809 transitions. Word has length 30 [2021-06-06 00:19:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:02,287 INFO L482 AbstractCegarLoop]: Abstraction has 44280 states and 170809 transitions. [2021-06-06 00:19:02,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 44280 states and 170809 transitions. [2021-06-06 00:19:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:19:02,351 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:02,351 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:19:02,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4413,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:02,551 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:02,552 INFO L82 PathProgramCache]: Analyzing trace with hash -688283281, now seen corresponding path program 172 times [2021-06-06 00:19:02,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:02,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851630401] [2021-06-06 00:19:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:02,897 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-06 00:19:03,012 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-06 00:19:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:19:03,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:03,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851630401] [2021-06-06 00:19:03,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851630401] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:03,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945594174] [2021-06-06 00:19:03,158 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 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:03,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:19:03,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:03,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:19:03,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:03,627 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:19:03,884 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:19:04,246 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-06 00:19:04,895 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-06 00:19:05,931 WARN L205 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 200 [2021-06-06 00:19:06,747 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 211 [2021-06-06 00:19:07,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-06 00:19:07,210 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:07,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 16 [2021-06-06 00:19:07,230 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:07,964 WARN L205 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 209 [2021-06-06 00:19:07,965 INFO L628 ElimStorePlain]: treesize reduction 669, result has 40.4 percent of original size [2021-06-06 00:19:07,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:07,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:07,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:19:07,981 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:08,166 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-06-06 00:19:08,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:08,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:19:08,180 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:08,350 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2021-06-06 00:19:08,351 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:19:08,363 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:08,515 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2021-06-06 00:19:08,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:08,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:08,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:19:08,529 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:08,734 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-06 00:19:08,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:08,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:08,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:19:08,746 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:08,876 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2021-06-06 00:19:08,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:08,876 INFO L518 ElimStorePlain]: Eliminatee v_prenex_762 vanished before elimination [2021-06-06 00:19:08,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:08,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:19:08,887 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:09,008 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-06 00:19:09,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:09,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:09,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:19:09,019 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:09,130 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2021-06-06 00:19:09,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:09,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:09,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:09,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:09,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:19:09,141 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:09,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:09,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 40 dim-0 vars, 10 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-06 00:19:09,246 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 50 variables, input treesize:1207, output treesize:52 [2021-06-06 00:19:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:19:09,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945594174] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:09,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:09,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:19:09,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597930823] [2021-06-06 00:19:09,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:19:09,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:09,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:19:09,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:19:09,306 INFO L87 Difference]: Start difference. First operand 44280 states and 170809 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:10,256 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2021-06-06 00:19:10,744 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-06 00:19:11,538 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 169 [2021-06-06 00:19:12,296 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-06 00:19:12,443 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-06 00:19:12,913 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2021-06-06 00:19:13,171 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2021-06-06 00:19:13,566 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-06-06 00:19:13,736 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-06-06 00:19:14,996 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 215 DAG size of output: 171 [2021-06-06 00:19:15,250 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-06 00:19:16,076 WARN L205 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 170 [2021-06-06 00:19:16,921 WARN L205 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 175 [2021-06-06 00:19:17,740 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 119 [2021-06-06 00:19:18,161 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-06-06 00:19:18,339 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2021-06-06 00:19:18,822 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 140 [2021-06-06 00:19:20,156 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 217 DAG size of output: 173 [2021-06-06 00:19:21,480 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 224 DAG size of output: 177 [2021-06-06 00:19:22,375 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 144 [2021-06-06 00:19:23,075 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 150 [2021-06-06 00:19:24,186 WARN L205 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 157 [2021-06-06 00:19:26,713 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 354 DAG size of output: 184 [2021-06-06 00:19:26,933 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-06 00:19:28,360 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 282 DAG size of output: 256 [2021-06-06 00:19:29,439 WARN L205 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 164 [2021-06-06 00:19:32,066 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 361 DAG size of output: 190 [2021-06-06 00:19:32,571 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2021-06-06 00:19:34,035 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 289 DAG size of output: 262 [2021-06-06 00:19:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:34,594 INFO L93 Difference]: Finished difference Result 74020 states and 273031 transitions. [2021-06-06 00:19:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-06 00:19:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:19:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:34,764 INFO L225 Difference]: With dead ends: 74020 [2021-06-06 00:19:34,764 INFO L226 Difference]: Without dead ends: 73984 [2021-06-06 00:19:34,764 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2191 ImplicationChecksByTransitivity, 26063.0ms TimeCoverageRelationStatistics Valid=877, Invalid=6095, Unknown=0, NotChecked=0, Total=6972 [2021-06-06 00:19:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73984 states. [2021-06-06 00:19:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73984 to 44408. [2021-06-06 00:19:35,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44408 states, 44407 states have (on average 3.856936969396717) internal successors, (171275), 44407 states have internal predecessors, (171275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44408 states to 44408 states and 171275 transitions. [2021-06-06 00:19:35,964 INFO L78 Accepts]: Start accepts. Automaton has 44408 states and 171275 transitions. Word has length 30 [2021-06-06 00:19:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:35,964 INFO L482 AbstractCegarLoop]: Abstraction has 44408 states and 171275 transitions. [2021-06-06 00:19:35,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:35,965 INFO L276 IsEmpty]: Start isEmpty. Operand 44408 states and 171275 transitions. [2021-06-06 00:19:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:19:36,029 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:36,029 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:19:36,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4850,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:36,229 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:36,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1460513255, now seen corresponding path program 173 times [2021-06-06 00:19:36,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:36,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355262877] [2021-06-06 00:19:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:36,699 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-06-06 00:19:36,896 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-06-06 00:19:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:19:37,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:37,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355262877] [2021-06-06 00:19:37,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355262877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:37,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145340277] [2021-06-06 00:19:37,064 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 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:37,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:19:37,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:37,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:19:37,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:37,717 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-06 00:19:38,370 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2021-06-06 00:19:38,453 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_782], 5=[A, v_prenex_790, v_prenex_780, v_prenex_784, v_prenex_786, v_prenex_788]} [2021-06-06 00:19:38,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:19:38,462 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:38,850 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 107 [2021-06-06 00:19:38,850 INFO L628 ElimStorePlain]: treesize reduction 326, result has 43.9 percent of original size [2021-06-06 00:19:38,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:38,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-06 00:19:38,858 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:38,938 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:38,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:38,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:38,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:19:38,945 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:39,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:39,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:39,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:19:39,028 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:39,091 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:39,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:39,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:19:39,098 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:39,153 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:39,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:39,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:19:39,161 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:39,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:39,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:39,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:39,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:19:39,214 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:39,252 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:39,255 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:19:39,255 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 14 variables, input treesize:602, output treesize:40 [2021-06-06 00:19:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:19:39,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145340277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:39,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:39,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:19:39,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142480190] [2021-06-06 00:19:39,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:19:39,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:19:39,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:19:39,300 INFO L87 Difference]: Start difference. First operand 44408 states and 171275 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:40,303 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-06 00:19:41,032 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2021-06-06 00:19:41,666 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-06-06 00:19:42,082 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 99 [2021-06-06 00:19:42,661 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-06 00:19:42,875 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-06 00:19:43,364 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2021-06-06 00:19:43,930 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2021-06-06 00:19:44,486 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2021-06-06 00:19:45,361 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 101 [2021-06-06 00:19:45,703 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-06-06 00:19:46,140 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-06 00:19:46,483 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2021-06-06 00:19:46,643 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 63 [2021-06-06 00:19:47,252 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2021-06-06 00:19:47,803 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109 [2021-06-06 00:19:48,102 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-06-06 00:19:48,371 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2021-06-06 00:19:48,567 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-06 00:19:48,800 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-06-06 00:19:48,968 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2021-06-06 00:19:49,194 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 73 [2021-06-06 00:19:49,399 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-06-06 00:19:49,671 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2021-06-06 00:19:49,894 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2021-06-06 00:19:50,136 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2021-06-06 00:19:50,424 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2021-06-06 00:19:50,828 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2021-06-06 00:19:51,099 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2021-06-06 00:19:52,768 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 139 DAG size of output: 94 [2021-06-06 00:19:53,257 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 49 [2021-06-06 00:19:54,620 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 140 DAG size of output: 96 [2021-06-06 00:19:54,861 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2021-06-06 00:19:55,180 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-06 00:19:55,367 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 34 [2021-06-06 00:19:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:55,749 INFO L93 Difference]: Finished difference Result 84429 states and 308183 transitions. [2021-06-06 00:19:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-06 00:19:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:19:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:55,940 INFO L225 Difference]: With dead ends: 84429 [2021-06-06 00:19:55,940 INFO L226 Difference]: Without dead ends: 84353 [2021-06-06 00:19:55,941 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3488 ImplicationChecksByTransitivity, 16192.8ms TimeCoverageRelationStatistics Valid=1280, Invalid=9022, Unknown=0, NotChecked=0, Total=10302 [2021-06-06 00:19:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84353 states. [2021-06-06 00:19:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84353 to 44843. [2021-06-06 00:19:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44843 states, 44842 states have (on average 3.857633468623166) internal successors, (172984), 44842 states have internal predecessors, (172984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44843 states to 44843 states and 172984 transitions. [2021-06-06 00:19:57,158 INFO L78 Accepts]: Start accepts. Automaton has 44843 states and 172984 transitions. Word has length 30 [2021-06-06 00:19:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:57,158 INFO L482 AbstractCegarLoop]: Abstraction has 44843 states and 172984 transitions. [2021-06-06 00:19:57,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 44843 states and 172984 transitions. [2021-06-06 00:19:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:19:57,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:57,226 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:19:57,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4953,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:57,427 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:57,427 INFO L82 PathProgramCache]: Analyzing trace with hash -450848413, now seen corresponding path program 83 times [2021-06-06 00:19:57,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:57,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896983476] [2021-06-06 00:19:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:58,024 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-06 00:19:58,156 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-06 00:19:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:19:58,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:58,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896983476] [2021-06-06 00:19:58,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896983476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:58,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796300016] [2021-06-06 00:19:58,271 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 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:58,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:19:58,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:58,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 00:19:58,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:00,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-06 00:20:00,278 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-06 00:20:00,296 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:00,314 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:00,332 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:00,348 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:00,364 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 19 [2021-06-06 00:20:00,380 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:00,397 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:20:00,413 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:20:00,429 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:00,445 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:20:00,461 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:00,479 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-06 00:20:00,495 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-06 00:20:00,511 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:00,527 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-06 00:20:00,543 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 16 [2021-06-06 00:20:00,559 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:00,575 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:20:00,592 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 16 [2021-06-06 00:20:00,609 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2021-06-06 00:20:00,626 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 16 [2021-06-06 00:20:00,643 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-06-06 00:20:00,660 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 16 [2021-06-06 00:20:00,678 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2021-06-06 00:20:00,697 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:00,716 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:00,735 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2021-06-06 00:20:00,753 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-06-06 00:20:00,772 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:00,790 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:00,809 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-06-06 00:20:00,826 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 19 [2021-06-06 00:20:00,844 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:20:00,861 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:20:00,877 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:20:00,894 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2021-06-06 00:20:00,915 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 16 [2021-06-06 00:20:00,936 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-06 00:20:00,956 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 22 [2021-06-06 00:20:00,977 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:00,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:00,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 19 [2021-06-06 00:20:00,996 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 19 [2021-06-06 00:20:01,015 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:01,036 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 22 [2021-06-06 00:20:01,057 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 16 [2021-06-06 00:20:01,078 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2021-06-06 00:20:01,099 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 22 [2021-06-06 00:20:01,120 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2021-06-06 00:20:01,139 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 19 [2021-06-06 00:20:01,156 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:01,173 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:01,190 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 19 [2021-06-06 00:20:01,206 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 19 [2021-06-06 00:20:01,223 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-06-06 00:20:01,238 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:01,253 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 19 [2021-06-06 00:20:01,269 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:01,286 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 22 [2021-06-06 00:20:01,302 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:01,317 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-06-06 00:20:01,331 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:01,344 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:01,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:01,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:01,351 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:01,370 INFO L628 ElimStorePlain]: treesize reduction 43, result has 32.8 percent of original size [2021-06-06 00:20:01,371 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:20:01,371 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3721, output treesize:15 [2021-06-06 00:20:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:01,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796300016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:01,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:20:01,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-06-06 00:20:01,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996477903] [2021-06-06 00:20:01,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:20:01,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:20:01,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:20:01,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:20:01,405 INFO L87 Difference]: Start difference. First operand 44843 states and 172984 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:02,568 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 113 [2021-06-06 00:20:02,917 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 64 [2021-06-06 00:20:03,137 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 66 [2021-06-06 00:20:03,550 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2021-06-06 00:20:03,925 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-06-06 00:20:04,513 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 107 [2021-06-06 00:20:05,140 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 123 [2021-06-06 00:20:05,824 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 116 [2021-06-06 00:20:06,065 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 67 [2021-06-06 00:20:06,648 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 112 [2021-06-06 00:20:06,905 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 78 [2021-06-06 00:20:07,425 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2021-06-06 00:20:07,986 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 116 [2021-06-06 00:20:08,225 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2021-06-06 00:20:08,692 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 107 [2021-06-06 00:20:09,191 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 108 [2021-06-06 00:20:09,605 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2021-06-06 00:20:09,888 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2021-06-06 00:20:10,593 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 97 [2021-06-06 00:20:10,915 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 82 [2021-06-06 00:20:11,184 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-06-06 00:20:11,401 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-06 00:20:11,690 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:20:12,149 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 80 [2021-06-06 00:20:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:20:12,630 INFO L93 Difference]: Finished difference Result 56726 states and 212697 transitions. [2021-06-06 00:20:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:20:12,630 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2021-06-06 00:20:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:20:12,832 INFO L225 Difference]: With dead ends: 56726 [2021-06-06 00:20:12,832 INFO L226 Difference]: Without dead ends: 56696 [2021-06-06 00:20:12,832 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 10890.6ms TimeCoverageRelationStatistics Valid=588, Invalid=3834, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:20:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56696 states. [2021-06-06 00:20:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56696 to 44867. [2021-06-06 00:20:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44867 states, 44866 states have (on average 3.8571301208041726) internal successors, (173054), 44866 states have internal predecessors, (173054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44867 states to 44867 states and 173054 transitions. [2021-06-06 00:20:13,738 INFO L78 Accepts]: Start accepts. Automaton has 44867 states and 173054 transitions. Word has length 30 [2021-06-06 00:20:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:20:13,738 INFO L482 AbstractCegarLoop]: Abstraction has 44867 states and 173054 transitions. [2021-06-06 00:20:13,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 44867 states and 173054 transitions. [2021-06-06 00:20:13,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:20:13,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:20:13,804 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:20:14,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4982,257 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:14,009 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:20:14,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:20:14,010 INFO L82 PathProgramCache]: Analyzing trace with hash 878036001, now seen corresponding path program 174 times [2021-06-06 00:20:14,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:20:14,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355241711] [2021-06-06 00:20:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:20:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:14,372 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-06 00:20:14,499 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-06-06 00:20:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:14,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:20:14,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355241711] [2021-06-06 00:20:14,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355241711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:14,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449981969] [2021-06-06 00:20:14,732 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 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:14,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:20:14,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:20:14,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 00:20:14,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:15,888 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-06-06 00:20:16,071 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_799], 5=[v_prenex_801, A, v_prenex_803, v_prenex_805, v_prenex_807, v_prenex_809]} [2021-06-06 00:20:16,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:20:16,081 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:16,482 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 107 [2021-06-06 00:20:16,482 INFO L628 ElimStorePlain]: treesize reduction 326, result has 43.9 percent of original size [2021-06-06 00:20:16,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:16,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:20:16,491 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:16,567 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:16,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:20:16,575 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:16,784 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-06 00:20:16,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:16,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:20:16,793 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:16,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:16,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:16,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:20:16,861 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:16,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:16,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:16,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-06 00:20:16,922 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:16,968 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:16,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:16,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:16,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-06 00:20:16,974 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:17,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:17,017 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 7 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:20:17,017 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 14 variables, input treesize:602, output treesize:31 [2021-06-06 00:20:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:17,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449981969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:17,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:20:17,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:20:17,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085963322] [2021-06-06 00:20:17,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:20:17,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:20:17,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:20:17,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:20:17,060 INFO L87 Difference]: Start difference. First operand 44867 states and 173054 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:18,647 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-06-06 00:20:19,174 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2021-06-06 00:20:19,571 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2021-06-06 00:20:19,875 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-06-06 00:20:20,510 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2021-06-06 00:20:20,655 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-06-06 00:20:20,962 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2021-06-06 00:20:21,417 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2021-06-06 00:20:21,962 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2021-06-06 00:20:22,471 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2021-06-06 00:20:23,342 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2021-06-06 00:20:23,702 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 94 [2021-06-06 00:20:24,517 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-06-06 00:20:24,825 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2021-06-06 00:20:25,423 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 110 [2021-06-06 00:20:25,875 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2021-06-06 00:20:26,378 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2021-06-06 00:20:26,813 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 102 [2021-06-06 00:20:27,058 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-06 00:20:27,423 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-06-06 00:20:27,795 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-06-06 00:20:28,081 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2021-06-06 00:20:28,419 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-06 00:20:29,076 WARN L205 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2021-06-06 00:20:29,789 WARN L205 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 119 [2021-06-06 00:20:30,000 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-06 00:20:30,175 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2021-06-06 00:20:30,455 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2021-06-06 00:20:30,616 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-06 00:20:30,861 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-06-06 00:20:31,118 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2021-06-06 00:20:31,433 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2021-06-06 00:20:31,635 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-06-06 00:20:31,871 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-06-06 00:20:32,166 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 79 [2021-06-06 00:20:32,529 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 95 [2021-06-06 00:20:34,377 WARN L205 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2021-06-06 00:20:34,519 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-06-06 00:20:35,480 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2021-06-06 00:20:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:20:36,360 INFO L93 Difference]: Finished difference Result 75650 states and 278312 transitions. [2021-06-06 00:20:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-06-06 00:20:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:20:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:20:36,537 INFO L225 Difference]: With dead ends: 75650 [2021-06-06 00:20:36,537 INFO L226 Difference]: Without dead ends: 75569 [2021-06-06 00:20:36,538 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 18571.2ms TimeCoverageRelationStatistics Valid=1377, Invalid=11733, Unknown=0, NotChecked=0, Total=13110 [2021-06-06 00:20:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75569 states. [2021-06-06 00:20:37,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75569 to 44957. [2021-06-06 00:20:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44957 states, 44956 states have (on average 3.8556143785034256) internal successors, (173333), 44956 states have internal predecessors, (173333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44957 states to 44957 states and 173333 transitions. [2021-06-06 00:20:37,696 INFO L78 Accepts]: Start accepts. Automaton has 44957 states and 173333 transitions. Word has length 30 [2021-06-06 00:20:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:20:37,697 INFO L482 AbstractCegarLoop]: Abstraction has 44957 states and 173333 transitions. [2021-06-06 00:20:37,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 44957 states and 173333 transitions. [2021-06-06 00:20:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:20:37,763 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:20:37,763 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:20:37,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5510,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:37,963 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:20:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:20:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2084417043, now seen corresponding path program 175 times [2021-06-06 00:20:37,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:20:37,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095049416] [2021-06-06 00:20:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:20:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:38,520 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-06 00:20:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:38,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:20:38,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095049416] [2021-06-06 00:20:38,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095049416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:38,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561072423] [2021-06-06 00:20:38,703 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 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:38,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 00:20:38,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:39,162 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-06 00:20:39,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:39,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:39,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:39,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:20:39,985 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:39,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:39,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:39,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:39,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:39,997 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,010 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:40,024 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:40,036 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:20:40,050 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:40,062 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,075 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:40,088 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:40,101 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,114 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:40,126 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:20:40,139 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-06 00:20:40,153 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:40,166 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:40,180 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2021-06-06 00:20:40,193 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:20:40,206 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 16 [2021-06-06 00:20:40,220 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:40,233 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:40,247 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,259 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:40,272 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:20:40,285 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:40,297 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:20:40,310 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:20:40,322 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-06 00:20:40,336 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:40,349 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:40,362 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:40,376 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:40,391 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:20:40,404 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:20:40,418 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:40,431 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:40,444 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:40,457 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:20:40,471 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,483 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:40,496 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,508 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:20:40,521 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:20:40,533 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:40,546 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:40,559 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:20:40,572 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:20:40,584 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:20:40,597 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:40,610 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2021-06-06 00:20:40,622 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:20:40,635 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:40,647 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:20:40,659 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:20:40,671 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:40,683 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:40,695 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 16 [2021-06-06 00:20:40,707 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:40,717 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:20:40,727 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:20:40,736 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:40,746 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:40,755 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:40,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:40,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:40,760 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:40,781 INFO L628 ElimStorePlain]: treesize reduction 58, result has 26.6 percent of original size [2021-06-06 00:20:40,781 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:20:40,781 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3328, output treesize:15 [2021-06-06 00:20:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:40,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561072423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:40,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:20:40,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-06 00:20:40,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280745497] [2021-06-06 00:20:40,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:20:40,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:20:40,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:20:40,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:20:40,810 INFO L87 Difference]: Start difference. First operand 44957 states and 173333 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:41,648 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2021-06-06 00:20:42,029 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-06-06 00:20:42,409 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 73 [2021-06-06 00:20:42,941 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2021-06-06 00:20:43,352 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 84 [2021-06-06 00:20:43,675 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 76 [2021-06-06 00:20:44,282 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 74 [2021-06-06 00:20:44,424 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2021-06-06 00:20:44,583 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-06-06 00:20:44,862 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 76 [2021-06-06 00:20:45,116 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2021-06-06 00:20:45,339 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 80 [2021-06-06 00:20:45,703 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-06-06 00:20:45,905 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-06-06 00:20:46,361 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 77 [2021-06-06 00:20:46,518 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2021-06-06 00:20:46,805 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 79 [2021-06-06 00:20:47,456 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-06 00:20:47,833 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-06-06 00:20:48,439 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-06-06 00:20:48,606 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-06-06 00:20:48,849 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-06-06 00:20:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:20:49,188 INFO L93 Difference]: Finished difference Result 64716 states and 240407 transitions. [2021-06-06 00:20:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:20:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:20:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:20:49,339 INFO L225 Difference]: With dead ends: 64716 [2021-06-06 00:20:49,340 INFO L226 Difference]: Without dead ends: 64686 [2021-06-06 00:20:49,340 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 8145.5ms TimeCoverageRelationStatistics Valid=810, Invalid=5510, Unknown=0, NotChecked=0, Total=6320 [2021-06-06 00:20:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64686 states. [2021-06-06 00:20:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64686 to 45049. [2021-06-06 00:20:50,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45049 states, 45048 states have (on average 3.8555984727401884) internal successors, (173687), 45048 states have internal predecessors, (173687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45049 states to 45049 states and 173687 transitions. [2021-06-06 00:20:50,373 INFO L78 Accepts]: Start accepts. Automaton has 45049 states and 173687 transitions. Word has length 30 [2021-06-06 00:20:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:20:50,373 INFO L482 AbstractCegarLoop]: Abstraction has 45049 states and 173687 transitions. [2021-06-06 00:20:50,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:50,373 INFO L276 IsEmpty]: Start isEmpty. Operand 45049 states and 173687 transitions. [2021-06-06 00:20:50,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:20:50,439 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:20:50,439 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:20:50,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5538 [2021-06-06 00:20:50,640 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:20:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:20:50,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1108098199, now seen corresponding path program 176 times [2021-06-06 00:20:50,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:20:50,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274859786] [2021-06-06 00:20:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:20:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:51,088 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2021-06-06 00:20:51,207 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2021-06-06 00:20:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:51,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:20:51,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274859786] [2021-06-06 00:20:51,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274859786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:51,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874763747] [2021-06-06 00:20:51,327 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 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:51,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:20:51,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:20:51,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:20:51,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:52,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:52,519 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:52,532 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:52,544 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:52,556 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:52,568 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:20:52,581 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:52,593 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:20:52,606 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:52,618 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:52,629 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2021-06-06 00:20:52,641 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:52,653 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:20:52,665 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:52,678 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:52,691 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:52,702 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:52,714 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-06 00:20:52,725 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:52,736 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:52,747 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:52,759 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:20:52,771 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:52,782 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:52,793 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2021-06-06 00:20:52,804 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-06 00:20:52,816 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:52,827 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:20:52,838 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:20:52,849 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:20:52,861 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:52,871 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:20:52,882 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:52,894 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:52,905 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 16 [2021-06-06 00:20:52,917 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:52,928 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:52,939 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:20:52,950 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:52,961 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:20:52,973 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:52,984 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:52,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:52,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-06 00:20:52,996 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-06 00:20:53,007 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-06 00:20:53,018 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-06 00:20:53,029 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:53,040 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 16 [2021-06-06 00:20:53,052 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:53,063 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:53,075 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-06 00:20:53,086 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-06 00:20:53,097 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-06 00:20:53,108 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:20:53,119 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-06 00:20:53,130 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:20:53,143 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-06 00:20:53,155 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-06 00:20:53,167 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2021-06-06 00:20:53,178 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-06 00:20:53,188 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-06 00:20:53,199 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-06 00:20:53,209 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-06 00:20:53,220 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:53,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:53,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2021-06-06 00:20:53,225 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:53,245 INFO L628 ElimStorePlain]: treesize reduction 58, result has 26.6 percent of original size [2021-06-06 00:20:53,246 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:20:53,246 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3328, output treesize:15 [2021-06-06 00:20:53,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:20:53,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874763747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:53,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:20:53,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:20:53,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029967886] [2021-06-06 00:20:53,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:20:53,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:20:53,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:20:53,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:20:53,280 INFO L87 Difference]: Start difference. First operand 45049 states and 173687 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:54,142 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-06 00:20:54,384 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2021-06-06 00:20:54,844 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-06-06 00:20:55,125 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-06 00:20:55,431 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 92 [2021-06-06 00:20:55,927 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2021-06-06 00:20:56,396 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 94 [2021-06-06 00:20:56,659 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2021-06-06 00:20:56,879 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2021-06-06 00:20:57,218 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2021-06-06 00:20:57,363 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2021-06-06 00:20:57,829 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2021-06-06 00:20:58,217 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2021-06-06 00:20:58,656 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 95 [2021-06-06 00:20:58,813 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2021-06-06 00:20:59,271 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96 [2021-06-06 00:20:59,415 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2021-06-06 00:20:59,938 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2021-06-06 00:21:00,551 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2021-06-06 00:21:00,746 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-06-06 00:21:00,956 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2021-06-06 00:21:01,527 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 103 [2021-06-06 00:21:01,942 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-06 00:21:02,096 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-06-06 00:21:02,327 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-06 00:21:02,465 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-06-06 00:21:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:21:03,604 INFO L93 Difference]: Finished difference Result 74657 states and 275921 transitions. [2021-06-06 00:21:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-06 00:21:03,604 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 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 30 [2021-06-06 00:21:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:21:03,778 INFO L225 Difference]: With dead ends: 74657 [2021-06-06 00:21:03,778 INFO L226 Difference]: Without dead ends: 74627 [2021-06-06 00:21:03,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1963 ImplicationChecksByTransitivity, 9381.6ms TimeCoverageRelationStatistics Valid=657, Invalid=5505, Unknown=0, NotChecked=0, Total=6162 [2021-06-06 00:21:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74627 states. [2021-06-06 00:21:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74627 to 45193. [2021-06-06 00:21:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45193 states, 45192 states have (on average 3.853890069038768) internal successors, (174165), 45192 states have internal predecessors, (174165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:21:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45193 states to 45193 states and 174165 transitions. [2021-06-06 00:21:04,954 INFO L78 Accepts]: Start accepts. Automaton has 45193 states and 174165 transitions. Word has length 30 [2021-06-06 00:21:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:21:04,954 INFO L482 AbstractCegarLoop]: Abstraction has 45193 states and 174165 transitions. [2021-06-06 00:21:04,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:21:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 45193 states and 174165 transitions. [2021-06-06 00:21:05,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:21:05,021 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:21:05,021 INFO L554 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-06 00:21:05,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5786,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:21:05,222 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:21:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:21:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1979374251, now seen corresponding path program 177 times [2021-06-06 00:21:05,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:21:05,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19717792] [2021-06-06 00:21:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:21:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:21:05,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 00:21:05,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:21:05,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19717792] [2021-06-06 00:21:05,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19717792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:21:05,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604722321] [2021-06-06 00:21:05,619 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 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:21:05,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:21:05,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:21:05,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-06 00:21:05,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:21:05,943 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-06 00:21:06,406 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2021-06-06 00:21:06,599 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:21:07,267 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:21:07,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-06 00:21:07,268 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:07,324 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:21:07,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:21:07,328 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:07,924 WARN L205 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-06-06 00:21:07,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:07,985 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:21:07,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-06 00:21:07,987 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:08,041 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:21:08,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:21:08,046 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:08,948 WARN L205 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 166 [2021-06-06 00:21:08,949 INFO L628 ElimStorePlain]: treesize reduction 16, result has 98.0 percent of original size [2021-06-06 00:21:09,008 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:21:09,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-06 00:21:09,013 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:09,051 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:09,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2021-06-06 00:21:09,064 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:09,902 WARN L205 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 156 [2021-06-06 00:21:09,903 INFO L628 ElimStorePlain]: treesize reduction 54, result has 93.4 percent of original size [2021-06-06 00:21:09,960 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:21:09,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 47 [2021-06-06 00:21:09,966 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:10,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:10,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 59 [2021-06-06 00:21:10,027 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. Received shutdown request... [2021-06-06 00:21:10,163 WARN L222 SmtUtils]: Removed 17 from assertion stack [2021-06-06 00:21:10,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6028,261 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:21:10,364 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-06 00:21:10,365 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 00:21:10,366 WARN L196 ceAbstractionStarter]: Timeout [2021-06-06 00:21:10,367 INFO L202 PluginConnector]: Adding new model min-fun-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 12:21:10 BasicIcfg [2021-06-06 00:21:10,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 00:21:10,367 INFO L168 Benchmark]: Toolchain (without parser) took 794385.26 ms. Allocated memory was 362.8 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 341.6 MB in the beginning and 12.1 GB in the end (delta: -11.7 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. [2021-06-06 00:21:10,367 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 362.8 MB. Free memory was 342.8 MB in the beginning and 342.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:21:10,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.74 ms. Allocated memory is still 362.8 MB. Free memory was 341.5 MB in the beginning and 340.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:21:10,367 INFO L168 Benchmark]: Boogie Preprocessor took 17.57 ms. Allocated memory is still 362.8 MB. Free memory was 340.1 MB in the beginning and 339.1 MB in the end (delta: 956.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:21:10,367 INFO L168 Benchmark]: RCFGBuilder took 247.37 ms. Allocated memory is still 362.8 MB. Free memory was 339.1 MB in the beginning and 326.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-06 00:21:10,367 INFO L168 Benchmark]: TraceAbstraction took 794096.14 ms. Allocated memory was 362.8 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 325.9 MB in the beginning and 12.1 GB in the end (delta: -11.7 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. [2021-06-06 00:21:10,368 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 0.09 ms. Allocated memory is still 362.8 MB. Free memory was 342.8 MB in the beginning and 342.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.74 ms. Allocated memory is still 362.8 MB. Free memory was 341.5 MB in the beginning and 340.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.57 ms. Allocated memory is still 362.8 MB. Free memory was 340.1 MB in the beginning and 339.1 MB in the end (delta: 956.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 247.37 ms. Allocated memory is still 362.8 MB. Free memory was 339.1 MB in the beginning and 326.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 794096.14 ms. Allocated memory was 362.8 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 325.9 MB in the beginning and 12.1 GB in the end (delta: -11.7 GB). Peak memory consumption was 4.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 155 for 135ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 793990.9ms, OverallIterations: 263, TraceHistogramMax: 3, EmptinessCheckTime: 5905.6ms, AutomataDifference: 446857.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 30.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12161 SDtfs, 76357 SDslu, 98110 SDs, 0 SdLazy, 157263 SolverSat, 13904 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80344.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17347 GetRequests, 5528 SyntacticMatches, 244 SemanticMatches, 11575 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205800 ImplicationChecksByTransitivity, 387955.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48694occurred in iteration=246, InterpolantAutomatonStates: 10301, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83156.5ms AutomataMinimizationTime, 262 MinimizatonAttempts, 1482204 StatesRemovedByMinimization, 262 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 898.0ms SsaConstructionTime, 2280.1ms SatisfiabilityAnalysisTime, 192591.6ms InterpolantComputationTime, 13978 NumberOfCodeBlocks, 13978 NumberOfCodeBlocksAsserted, 909 NumberOfCheckSat, 13457 ConstructedInterpolants, 204 QuantifiedInterpolants, 242546 SizeOfPredicates, 1040 NumberOfNonLiveVariables, 17659 ConjunctsInSsa, 3798 ConjunctsInUnsatCore, 521 InterpolantComputations, 3 PerfectInterpolantSequences, 1020/4544 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