/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.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 00:09:11,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 00:09:11,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 00:09:11,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 00:09:11,439 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 00:09:11,463 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 00:09:11,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 00:09:11,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 00:09:11,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 00:09:11,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 00:09:11,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 00:09:11,465 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 00:09:11,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 00:09:11,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 00:09:11,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 00:09:11,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 00:09:11,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 00:09:11,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 00:09:11,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 00:09:11,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 00:09:11,468 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 00:09:11,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 00:09:11,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 00:09:11,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 00:09:11,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 00:09:11,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 00:09:11,681 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 00:09:11,682 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 00:09:11,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl [2021-06-06 00:09:11,682 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-fun.wvr.bpl' [2021-06-06 00:09:11,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 00:09:11,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 00:09:11,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 00:09:11,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 00:09:11,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 00:09:11,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 00:09:11,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 00:09:11,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 00:09:11,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 00:09:11,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/1) ... [2021-06-06 00:09:11,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 00:09:11,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 00:09:11,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 00:09:11,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 00:09:11,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (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 00:09:11,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 00:09:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 00:09:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 00:09:11,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 00:09:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 00:09:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 00:09:11,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 00:09:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 00:09:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 00:09:11,829 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 00:09:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 00:09:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 00:09:11,829 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 00:09:12,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 00:09:12,026 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 00:09:12,027 INFO L202 PluginConnector]: Adding new model min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 12:09:12 BoogieIcfgContainer [2021-06-06 00:09:12,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 00:09:12,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 00:09:12,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 00:09:12,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 00:09:12,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 12:09:11" (1/2) ... [2021-06-06 00:09:12,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0122d3 and model type min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 12:09:12, skipping insertion in model container [2021-06-06 00:09:12,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 12:09:12" (2/2) ... [2021-06-06 00:09:12,032 INFO L111 eAbstractionObserver]: Analyzing ICFG min-fun.wvr.bpl [2021-06-06 00:09:12,035 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 00:09:12,036 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 00:09:12,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 00:09:12,052 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 00:09:12,094 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-06 00:09:12,108 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-06 00:09:12,138 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 00:09:12,138 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 00:09:12,138 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 00:09:12,138 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 00:09:12,139 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 00:09:12,139 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 00:09:12,139 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 00:09:12,139 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 00:09:12,149 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-06 00:09:12,169 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 00:09:12,170 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 00:09:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-06 00:09:12,178 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:12,179 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 00:09:12,179 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:12,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:12,184 INFO L82 PathProgramCache]: Analyzing trace with hash -986458276, now seen corresponding path program 1 times [2021-06-06 00:09:12,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:12,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839678588] [2021-06-06 00:09:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:12,334 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 00:09:12,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:12,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839678588] [2021-06-06 00:09:12,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839678588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 00:09:12,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 00:09:12,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 00:09:12,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337405248] [2021-06-06 00:09:12,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 00:09:12,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:12,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 00:09:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 00:09:12,346 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 00:09:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:12,368 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-06 00:09:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 00:09:12,369 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 00:09:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:12,376 INFO L225 Difference]: With dead ends: 217 [2021-06-06 00:09:12,376 INFO L226 Difference]: Without dead ends: 202 [2021-06-06 00:09:12,377 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 00:09:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-06 00:09:12,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-06 00:09:12,417 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 00:09:12,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-06 00:09:12,419 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-06 00:09:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:12,420 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-06 00:09:12,420 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 00:09:12,420 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-06 00:09:12,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-06 00:09:12,422 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:12,422 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 00:09:12,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 00:09:12,422 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:12,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:12,422 INFO L82 PathProgramCache]: Analyzing trace with hash -433058596, now seen corresponding path program 1 times [2021-06-06 00:09:12,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:12,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366148721] [2021-06-06 00:09:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:12,452 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 00:09:12,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:12,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366148721] [2021-06-06 00:09:12,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366148721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 00:09:12,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 00:09:12,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 00:09:12,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487295064] [2021-06-06 00:09:12,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 00:09:12,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:12,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 00:09:12,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 00:09:12,455 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 00:09:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:12,482 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-06 00:09:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 00:09:12,483 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 00:09:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:12,484 INFO L225 Difference]: With dead ends: 158 [2021-06-06 00:09:12,484 INFO L226 Difference]: Without dead ends: 158 [2021-06-06 00:09:12,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-06 00:09:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-06 00:09:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-06 00:09:12,491 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 00:09:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-06 00:09:12,492 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-06 00:09:12,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:12,492 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-06 00:09:12,493 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 00:09:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-06 00:09:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-06 00:09:12,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:12,494 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 00:09:12,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 00:09:12,494 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:12,495 INFO L82 PathProgramCache]: Analyzing trace with hash 275548602, now seen corresponding path program 1 times [2021-06-06 00:09:12,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:12,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703847197] [2021-06-06 00:09:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:12,538 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 00:09:12,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:12,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703847197] [2021-06-06 00:09:12,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703847197] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 00:09:12,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 00:09:12,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 00:09:12,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454262659] [2021-06-06 00:09:12,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-06 00:09:12,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:12,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-06 00:09:12,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-06 00:09:12,543 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 00:09:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:12,604 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-06 00:09:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 00:09:12,604 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 00:09:12,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:12,606 INFO L225 Difference]: With dead ends: 183 [2021-06-06 00:09:12,606 INFO L226 Difference]: Without dead ends: 183 [2021-06-06 00:09:12,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-06 00:09:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-06 00:09:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-06 00:09:12,614 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 00:09:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-06 00:09:12,615 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-06 00:09:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:12,615 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-06 00:09:12,615 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 00:09:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-06 00:09:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:09:12,618 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:12,619 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 00:09:12,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-06 00:09:12,619 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:12,619 INFO L82 PathProgramCache]: Analyzing trace with hash -483303622, now seen corresponding path program 1 times [2021-06-06 00:09:12,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:12,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895599215] [2021-06-06 00:09:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:13,033 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 00:09:13,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:13,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895599215] [2021-06-06 00:09:13,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895599215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:13,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045165899] [2021-06-06 00:09:13,034 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 00:09:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:13,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-06 00:09:13,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:13,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:13,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:13,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2021-06-06 00:09:13,506 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:13,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:13,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:13,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-06 00:09:13,511 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:13,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:13,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-06 00:09:13,521 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:13,533 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:13,535 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 00:09:13,535 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:97, output treesize:21 [2021-06-06 00:09:13,567 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 00:09:13,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045165899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:13,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:13,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:13,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908793256] [2021-06-06 00:09:13,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:13,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:13,569 INFO L87 Difference]: Start difference. First operand 158 states and 448 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 00:09:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:13,798 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-06 00:09:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 00:09:13,799 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 00:09:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:13,804 INFO L225 Difference]: With dead ends: 330 [2021-06-06 00:09:13,804 INFO L226 Difference]: Without dead ends: 315 [2021-06-06 00:09:13,804 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 396.9ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-06 00:09:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-06 00:09:13,826 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 00:09:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-06 00:09:13,827 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-06 00:09:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:13,827 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-06 00:09:13,827 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 00:09:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-06 00:09:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:09:13,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:13,829 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 00:09:14,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:14,050 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:14,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash -651112714, now seen corresponding path program 2 times [2021-06-06 00:09:14,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:14,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811718936] [2021-06-06 00:09:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:14,310 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 00:09:14,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:14,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811718936] [2021-06-06 00:09:14,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811718936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:14,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435078127] [2021-06-06 00:09:14,310 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 00:09:14,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:14,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:14,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-06 00:09:14,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:14,532 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:14,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:14,542 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:14,552 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:14,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:14,555 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:14,564 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:14,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:14,566 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:14,574 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:14,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:14,576 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:14,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:14,652 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 00:09:14,653 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:133, output treesize:122 [2021-06-06 00:09:14,806 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 00:09:14,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435078127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:14,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:14,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-06 00:09:14,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576447919] [2021-06-06 00:09:14,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:09:14,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:14,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:09:14,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:09:14,809 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 00:09:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:15,271 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions. [2021-06-06 00:09:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 00:09:15,272 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 00:09:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:15,275 INFO L225 Difference]: With dead ends: 374 [2021-06-06 00:09:15,275 INFO L226 Difference]: Without dead ends: 359 [2021-06-06 00:09:15,275 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 627.9ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:09:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-06-06 00:09:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229. [2021-06-06 00:09:15,283 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 00:09:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-06 00:09:15,287 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-06 00:09:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:15,287 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-06 00:09:15,287 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 00:09:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-06 00:09:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:09:15,289 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:15,289 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 00:09:15,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-06 00:09:15,509 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:15,510 INFO L82 PathProgramCache]: Analyzing trace with hash -352339266, now seen corresponding path program 3 times [2021-06-06 00:09:15,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:15,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731222502] [2021-06-06 00:09:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:15,686 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 00:09:15,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:15,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731222502] [2021-06-06 00:09:15,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731222502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:15,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080930198] [2021-06-06 00:09:15,686 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 00:09:15,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-06 00:09:15,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:15,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-06 00:09:15,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:15,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:15,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:15,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-06 00:09:15,904 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:15,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:15,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-06 00:09:15,909 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:15,944 INFO L628 ElimStorePlain]: treesize reduction 35, result has 56.8 percent of original size [2021-06-06 00:09:15,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:15,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-06 00:09:15,949 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:15,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:15,975 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:09:15,975 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:121, output treesize:21 [2021-06-06 00:09:16,024 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 00:09:16,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080930198] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:16,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:16,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-06-06 00:09:16,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928986936] [2021-06-06 00:09:16,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:16,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:16,026 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 12 states, 12 states have (on average 3.25) 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 00:09:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:16,200 INFO L93 Difference]: Finished difference Result 296 states and 831 transitions. [2021-06-06 00:09:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 00:09:16,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) 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 22 [2021-06-06 00:09:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:16,202 INFO L225 Difference]: With dead ends: 296 [2021-06-06 00:09:16,202 INFO L226 Difference]: Without dead ends: 281 [2021-06-06 00:09:16,202 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 339.1ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:09:16,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-06-06 00:09:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241. [2021-06-06 00:09:16,207 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 00:09:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-06 00:09:16,208 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-06 00:09:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:16,208 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-06 00:09:16,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) 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 00:09:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-06 00:09:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-06 00:09:16,209 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:16,210 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 00:09:16,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-06 00:09:16,427 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:16,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1218486334, now seen corresponding path program 4 times [2021-06-06 00:09:16,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:16,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420899998] [2021-06-06 00:09:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:16,604 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 00:09:16,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:16,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420899998] [2021-06-06 00:09:16,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420899998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:16,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576545739] [2021-06-06 00:09:16,605 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 00:09:16,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:16,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:16,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-06 00:09:16,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:16,797 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:16,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-06 00:09:16,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:16,806 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:16,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:16,808 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:16,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:16,868 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:16,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:16,870 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:16,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:16,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:16,886 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:16,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:16,945 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 00:09:16,946 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:98 [2021-06-06 00:09:17,080 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 00:09:17,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576545739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:17,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:17,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:17,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593510673] [2021-06-06 00:09:17,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:17,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:17,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:17,081 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:17,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:17,371 INFO L93 Difference]: Finished difference Result 409 states and 1185 transitions. [2021-06-06 00:09:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-06 00:09:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-06 00:09:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:17,373 INFO L225 Difference]: With dead ends: 409 [2021-06-06 00:09:17,373 INFO L226 Difference]: Without dead ends: 394 [2021-06-06 00:09:17,373 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 452.1ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:09:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-06 00:09:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 247. [2021-06-06 00:09:17,378 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 00:09:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-06 00:09:17,379 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-06 00:09:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:17,379 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-06 00:09:17,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-06 00:09:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:17,380 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:17,380 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 00:09:17,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:17,596 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:17,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:17,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1613936552, now seen corresponding path program 5 times [2021-06-06 00:09:17,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:17,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934258075] [2021-06-06 00:09:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:17,649 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 00:09:17,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:17,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934258075] [2021-06-06 00:09:17,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934258075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:17,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724091192] [2021-06-06 00:09:17,649 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 00:09:17,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:17,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:17,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:17,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:17,742 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 00:09:17,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724091192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:17,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:17,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:17,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847067235] [2021-06-06 00:09:17,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:17,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:17,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:17,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:17,743 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 00:09:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:18,106 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-06 00:09:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:09:18,107 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 00:09:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:18,109 INFO L225 Difference]: With dead ends: 619 [2021-06-06 00:09:18,109 INFO L226 Difference]: Without dead ends: 619 [2021-06-06 00:09:18,109 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 194.2ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:09:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-06 00:09:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-06 00:09:18,116 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 00:09:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-06 00:09:18,117 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-06 00:09:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:18,117 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-06 00:09:18,117 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 00:09:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-06 00:09:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:18,118 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:18,118 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 00:09:18,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-06 00:09:18,327 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:18,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1704711900, now seen corresponding path program 6 times [2021-06-06 00:09:18,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:18,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345187092] [2021-06-06 00:09:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:18,360 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 00:09:18,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:18,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345187092] [2021-06-06 00:09:18,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345187092] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:18,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555402825] [2021-06-06 00:09:18,360 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 00:09:18,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:18,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:18,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:18,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:18,480 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 00:09:18,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555402825] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:18,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:18,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:18,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801207961] [2021-06-06 00:09:18,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:18,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:18,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:18,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:18,482 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 00:09:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:19,175 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-06 00:09:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:09:19,176 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 00:09:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:19,180 INFO L225 Difference]: With dead ends: 1078 [2021-06-06 00:09:19,180 INFO L226 Difference]: Without dead ends: 1078 [2021-06-06 00:09:19,180 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 411.0ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:09:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-06 00:09:19,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-06 00:09:19,190 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 00:09:19,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-06 00:09:19,191 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-06 00:09:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:19,191 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-06 00:09:19,191 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 00:09:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-06 00:09:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:19,193 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:19,193 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 00:09:19,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:19,405 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:19,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:19,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2023303316, now seen corresponding path program 7 times [2021-06-06 00:09:19,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:19,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792120042] [2021-06-06 00:09:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:19,442 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 00:09:19,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:19,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792120042] [2021-06-06 00:09:19,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792120042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:19,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474223531] [2021-06-06 00:09:19,442 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 00:09:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:19,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:19,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:19,552 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 00:09:19,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474223531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:19,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:19,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:19,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615220354] [2021-06-06 00:09:19,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:19,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:19,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:19,553 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 00:09:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:20,184 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-06 00:09:20,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:09:20,184 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 00:09:20,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:20,188 INFO L225 Difference]: With dead ends: 951 [2021-06-06 00:09:20,188 INFO L226 Difference]: Without dead ends: 951 [2021-06-06 00:09:20,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 411.8ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:09:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-06 00:09:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-06 00:09:20,196 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 00:09:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-06 00:09:20,197 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-06 00:09:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:20,197 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-06 00:09:20,197 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 00:09:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-06 00:09:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:20,198 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:20,198 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 00:09:20,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:20,412 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1087164644, now seen corresponding path program 1 times [2021-06-06 00:09:20,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:20,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080579669] [2021-06-06 00:09:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:20,439 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 00:09:20,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:20,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080579669] [2021-06-06 00:09:20,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080579669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:20,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078792759] [2021-06-06 00:09:20,439 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 00:09:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:20,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 00:09:20,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:20,510 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 00:09:20,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078792759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:20,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:20,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 00:09:20,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652747041] [2021-06-06 00:09:20,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 00:09:20,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:20,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 00:09:20,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 00:09:20,512 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 00:09:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:20,617 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-06 00:09:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 00:09:20,618 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 00:09:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:20,620 INFO L225 Difference]: With dead ends: 669 [2021-06-06 00:09:20,620 INFO L226 Difference]: Without dead ends: 663 [2021-06-06 00:09:20,621 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 53.0ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-06 00:09:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-06 00:09:20,628 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 00:09:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-06 00:09:20,629 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-06 00:09:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:20,629 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-06 00:09:20,629 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 00:09:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-06 00:09:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:20,630 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:20,630 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 00:09:20,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-06 00:09:20,845 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:20,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1524133352, now seen corresponding path program 8 times [2021-06-06 00:09:20,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:20,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459815625] [2021-06-06 00:09:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:20,883 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 00:09:20,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:20,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459815625] [2021-06-06 00:09:20,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459815625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:20,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474815082] [2021-06-06 00:09:20,883 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 00:09:20,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:20,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:20,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:20,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:20,973 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 00:09:20,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474815082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:20,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:20,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 00:09:20,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709488684] [2021-06-06 00:09:20,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:20,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:20,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:20,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:20,974 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 00:09:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:21,117 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-06 00:09:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:09:21,118 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 00:09:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:21,120 INFO L225 Difference]: With dead ends: 710 [2021-06-06 00:09:21,120 INFO L226 Difference]: Without dead ends: 672 [2021-06-06 00:09:21,121 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:09:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-06 00:09:21,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-06 00:09:21,129 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 00:09:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-06 00:09:21,131 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-06 00:09:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:21,131 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-06 00:09:21,131 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 00:09:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-06 00:09:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:21,132 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:21,132 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 00:09:21,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:21,345 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2064876612, now seen corresponding path program 2 times [2021-06-06 00:09:21,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:21,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127846866] [2021-06-06 00:09:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:21,366 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 00:09:21,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:21,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127846866] [2021-06-06 00:09:21,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127846866] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:21,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19064373] [2021-06-06 00:09:21,366 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 00:09:21,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:21,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:21,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 00:09:21,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:21,433 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 00:09:21,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19064373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:21,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:21,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 00:09:21,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198274991] [2021-06-06 00:09:21,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 00:09:21,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:21,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 00:09:21,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 00:09:21,434 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 00:09:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:21,528 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-06 00:09:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 00:09:21,529 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 00:09:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:21,531 INFO L225 Difference]: With dead ends: 830 [2021-06-06 00:09:21,532 INFO L226 Difference]: Without dead ends: 830 [2021-06-06 00:09:21,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-06 00:09:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-06 00:09:21,541 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 00:09:21,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-06 00:09:21,542 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-06 00:09:21,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:21,543 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-06 00:09:21,543 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 00:09:21,543 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-06 00:09:21,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:21,544 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:21,544 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 00:09:21,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:21,759 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:21,759 INFO L82 PathProgramCache]: Analyzing trace with hash 718195046, now seen corresponding path program 9 times [2021-06-06 00:09:21,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:21,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575238620] [2021-06-06 00:09:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:21,796 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 00:09:21,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:21,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575238620] [2021-06-06 00:09:21,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575238620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:21,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237717644] [2021-06-06 00:09:21,797 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 00:09:21,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:21,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:21,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:21,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:21,949 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 00:09:21,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237717644] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:21,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:21,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:21,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350524903] [2021-06-06 00:09:21,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:09:21,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:09:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:09:21,950 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 00:09:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:22,202 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-06 00:09:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:09:22,202 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 00:09:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:22,207 INFO L225 Difference]: With dead ends: 1196 [2021-06-06 00:09:22,207 INFO L226 Difference]: Without dead ends: 1196 [2021-06-06 00:09:22,207 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:09:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-06 00:09:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-06 00:09:22,219 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 00:09:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-06 00:09:22,221 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-06 00:09:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:22,222 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-06 00:09:22,222 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 00:09:22,222 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-06 00:09:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:22,223 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:22,223 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 00:09:22,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-06 00:09:22,437 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:22,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1503109140, now seen corresponding path program 10 times [2021-06-06 00:09:22,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:22,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597688919] [2021-06-06 00:09:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:22,465 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 00:09:22,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:22,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597688919] [2021-06-06 00:09:22,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597688919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:22,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497044542] [2021-06-06 00:09:22,466 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 00:09:22,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:22,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:22,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:22,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:22,554 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 00:09:22,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497044542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:22,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:22,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:22,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564000533] [2021-06-06 00:09:22,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:09:22,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:09:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:09:22,555 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 00:09:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:22,926 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-06 00:09:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-06 00:09:22,926 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 00:09:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:22,931 INFO L225 Difference]: With dead ends: 1492 [2021-06-06 00:09:22,931 INFO L226 Difference]: Without dead ends: 1492 [2021-06-06 00:09:22,931 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 224.8ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:09:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-06 00:09:22,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-06 00:09:22,945 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 00:09:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-06 00:09:22,946 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-06 00:09:22,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:22,946 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-06 00:09:22,946 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 00:09:22,946 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-06 00:09:22,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:22,947 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:22,947 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 00:09:23,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-06 00:09:23,161 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash 420086484, now seen corresponding path program 11 times [2021-06-06 00:09:23,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:23,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894069623] [2021-06-06 00:09:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:23,192 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 00:09:23,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:23,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894069623] [2021-06-06 00:09:23,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894069623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:23,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825552475] [2021-06-06 00:09:23,192 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 00:09:23,218 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:23,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:23,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:23,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:23,286 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 00:09:23,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825552475] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:23,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:23,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 00:09:23,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639649785] [2021-06-06 00:09:23,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:23,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:23,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:23,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:23,287 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 00:09:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:23,486 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-06 00:09:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:09:23,486 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 00:09:23,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:23,490 INFO L225 Difference]: With dead ends: 1258 [2021-06-06 00:09:23,490 INFO L226 Difference]: Without dead ends: 1248 [2021-06-06 00:09:23,490 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:09:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-06 00:09:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-06 00:09:23,503 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 00:09:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-06 00:09:23,505 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-06 00:09:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:23,505 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-06 00:09:23,505 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 00:09:23,505 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-06 00:09:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:23,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:23,506 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 00:09:23,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-06-06 00:09:23,722 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:23,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1891164602, now seen corresponding path program 12 times [2021-06-06 00:09:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:23,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044770009] [2021-06-06 00:09:23,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:23,751 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 00:09:23,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:23,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044770009] [2021-06-06 00:09:23,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044770009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:23,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675964117] [2021-06-06 00:09:23,752 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 00:09:23,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:23,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:23,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:23,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:23,840 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 00:09:23,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675964117] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:23,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:23,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-06 00:09:23,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484956210] [2021-06-06 00:09:23,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:23,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:23,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:23,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:23,841 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 00:09:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:24,076 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-06 00:09:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:09:24,076 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 00:09:24,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:24,080 INFO L225 Difference]: With dead ends: 1329 [2021-06-06 00:09:24,081 INFO L226 Difference]: Without dead ends: 1329 [2021-06-06 00:09:24,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:09:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-06 00:09:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-06 00:09:24,093 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 00:09:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-06 00:09:24,095 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-06 00:09:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:24,095 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-06 00:09:24,095 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 00:09:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-06 00:09:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:24,096 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:24,096 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 00:09:24,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:24,312 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:24,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:24,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1458287998, now seen corresponding path program 13 times [2021-06-06 00:09:24,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:24,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738972497] [2021-06-06 00:09:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:24,343 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 00:09:24,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:24,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738972497] [2021-06-06 00:09:24,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738972497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:24,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375977961] [2021-06-06 00:09:24,343 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 00:09:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:24,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:24,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:24,424 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 00:09:24,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375977961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:24,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:24,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:24,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338630974] [2021-06-06 00:09:24,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:09:24,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:24,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:09:24,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:09:24,425 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 00:09:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:24,739 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-06 00:09:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:09:24,740 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 00:09:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:24,745 INFO L225 Difference]: With dead ends: 1548 [2021-06-06 00:09:24,745 INFO L226 Difference]: Without dead ends: 1544 [2021-06-06 00:09:24,745 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 174.6ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:09:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-06 00:09:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-06 00:09:24,770 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 00:09:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-06 00:09:24,771 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-06 00:09:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:24,771 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-06 00:09:24,772 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 00:09:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-06 00:09:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:24,773 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:24,773 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 00:09:24,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:24,989 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:24,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:24,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1186278808, now seen corresponding path program 14 times [2021-06-06 00:09:24,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:24,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826309182] [2021-06-06 00:09:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:25,018 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 00:09:25,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:25,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826309182] [2021-06-06 00:09:25,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826309182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:25,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028644650] [2021-06-06 00:09:25,018 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) [2021-06-06 00:09:25,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:25,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:25,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:25,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:25,124 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 00:09:25,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028644650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:25,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:25,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:25,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986190026] [2021-06-06 00:09:25,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:25,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:25,125 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 00:09:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:25,775 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-06 00:09:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:09:25,776 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 00:09:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:25,785 INFO L225 Difference]: With dead ends: 2734 [2021-06-06 00:09:25,785 INFO L226 Difference]: Without dead ends: 2734 [2021-06-06 00:09:25,786 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 399.8ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:09:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-06 00:09:25,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-06 00:09:25,808 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 00:09:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-06 00:09:25,810 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-06 00:09:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:25,810 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-06 00:09:25,810 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 00:09:25,810 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-06 00:09:25,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:25,811 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:25,811 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 00:09:26,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:26,025 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:26,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1753230888, now seen corresponding path program 15 times [2021-06-06 00:09:26,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:26,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980779790] [2021-06-06 00:09:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:26,055 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 00:09:26,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:26,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980779790] [2021-06-06 00:09:26,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980779790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:26,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589554749] [2021-06-06 00:09:26,056 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 00:09:26,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:26,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:26,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:26,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:26,157 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 00:09:26,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589554749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:26,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:26,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412292232] [2021-06-06 00:09:26,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:26,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:26,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:26,158 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 00:09:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:26,789 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-06 00:09:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:09:26,790 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 00:09:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:26,795 INFO L225 Difference]: With dead ends: 2693 [2021-06-06 00:09:26,795 INFO L226 Difference]: Without dead ends: 2693 [2021-06-06 00:09:26,796 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 393.6ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:09:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-06 00:09:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-06 00:09:26,818 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 00:09:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-06 00:09:26,819 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-06 00:09:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:26,820 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-06 00:09:26,820 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 00:09:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-06 00:09:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:26,821 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:26,821 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 00:09:27,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-06 00:09:27,033 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:27,033 INFO L82 PathProgramCache]: Analyzing trace with hash 580885030, now seen corresponding path program 16 times [2021-06-06 00:09:27,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:27,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181345904] [2021-06-06 00:09:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:27,061 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 00:09:27,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:27,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181345904] [2021-06-06 00:09:27,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181345904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:27,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266547339] [2021-06-06 00:09:27,061 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 00:09:27,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:27,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:27,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:27,165 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 00:09:27,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266547339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:27,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:27,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:27,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693473928] [2021-06-06 00:09:27,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:27,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:27,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:27,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:27,166 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 00:09:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:27,727 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-06 00:09:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:09:27,727 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 00:09:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:27,732 INFO L225 Difference]: With dead ends: 2677 [2021-06-06 00:09:27,733 INFO L226 Difference]: Without dead ends: 2677 [2021-06-06 00:09:27,733 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 318.3ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:09:27,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-06 00:09:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-06 00:09:27,757 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 00:09:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-06 00:09:27,759 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-06 00:09:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:27,759 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-06 00:09:27,759 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 00:09:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-06 00:09:27,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:27,761 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:27,761 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 00:09:27,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-06 00:09:27,977 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:27,977 INFO L82 PathProgramCache]: Analyzing trace with hash 662261118, now seen corresponding path program 17 times [2021-06-06 00:09:27,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:27,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136475000] [2021-06-06 00:09:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:28,056 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 00:09:28,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:28,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136475000] [2021-06-06 00:09:28,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136475000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:28,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141502430] [2021-06-06 00:09:28,056 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 00:09:28,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:09:28,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:28,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:28,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:28,171 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 00:09:28,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141502430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:28,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:28,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:28,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911628453] [2021-06-06 00:09:28,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:28,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:28,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:28,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:28,172 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 00:09:28,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:28,706 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-06 00:09:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:09:28,706 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 00:09:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:28,711 INFO L225 Difference]: With dead ends: 2474 [2021-06-06 00:09:28,712 INFO L226 Difference]: Without dead ends: 2470 [2021-06-06 00:09:28,712 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 290.6ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:09:28,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-06 00:09:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-06 00:09:28,731 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 00:09:28,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-06 00:09:28,733 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-06 00:09:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:28,733 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-06 00:09:28,733 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 00:09:28,733 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-06 00:09:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:28,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:28,734 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 00:09:28,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-06 00:09:28,949 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1592918334, now seen corresponding path program 18 times [2021-06-06 00:09:28,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:28,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255968217] [2021-06-06 00:09:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:28,978 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 00:09:28,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:28,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255968217] [2021-06-06 00:09:28,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255968217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:28,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412431719] [2021-06-06 00:09:28,979 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 00:09:29,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:09:29,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:29,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:29,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:29,075 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 00:09:29,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412431719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:29,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:29,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:29,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751772140] [2021-06-06 00:09:29,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:29,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:29,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:29,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:29,076 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 00:09:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:29,669 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-06 00:09:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:09:29,669 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 00:09:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:29,674 INFO L225 Difference]: With dead ends: 2514 [2021-06-06 00:09:29,674 INFO L226 Difference]: Without dead ends: 2514 [2021-06-06 00:09:29,674 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 345.6ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:09:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-06 00:09:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-06 00:09:29,695 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 00:09:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-06 00:09:29,697 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-06 00:09:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:29,698 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-06 00:09:29,698 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 00:09:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-06 00:09:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:29,699 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:29,699 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 00:09:29,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-06 00:09:29,913 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1059009808, now seen corresponding path program 19 times [2021-06-06 00:09:29,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:29,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452271620] [2021-06-06 00:09:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:29,944 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 00:09:29,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:29,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452271620] [2021-06-06 00:09:29,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452271620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:29,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624898667] [2021-06-06 00:09:29,944 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) [2021-06-06 00:09:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:29,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:29,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:30,031 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 00:09:30,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624898667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:30,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:30,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:30,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704525226] [2021-06-06 00:09:30,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:30,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:30,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:30,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:30,032 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 00:09:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:30,636 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-06 00:09:30,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:09:30,636 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 00:09:30,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:30,640 INFO L225 Difference]: With dead ends: 2332 [2021-06-06 00:09:30,640 INFO L226 Difference]: Without dead ends: 2328 [2021-06-06 00:09:30,641 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 345.9ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:09:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-06 00:09:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-06 00:09:30,660 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 00:09:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-06 00:09:30,661 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-06 00:09:30,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:30,662 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-06 00:09:30,662 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 00:09:30,662 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-06 00:09:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:30,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:30,663 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 00:09:30,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-06 00:09:30,879 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:30,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1971295360, now seen corresponding path program 3 times [2021-06-06 00:09:30,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:30,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160742617] [2021-06-06 00:09:30,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:30,900 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 00:09:30,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:30,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160742617] [2021-06-06 00:09:30,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160742617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:30,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464535443] [2021-06-06 00:09:30,900 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 00:09:30,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-06 00:09:30,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:30,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 00:09:30,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:30,989 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 00:09:30,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464535443] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:30,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:30,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 00:09:30,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137106039] [2021-06-06 00:09:30,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 00:09:30,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:30,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 00:09:30,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-06 00:09:30,990 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 00:09:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:31,057 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-06 00:09:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-06 00:09:31,058 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 00:09:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:31,059 INFO L225 Difference]: With dead ends: 929 [2021-06-06 00:09:31,059 INFO L226 Difference]: Without dead ends: 929 [2021-06-06 00:09:31,059 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-06 00:09:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-06 00:09:31,069 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 00:09:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-06 00:09:31,071 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-06 00:09:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:31,071 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-06 00:09:31,071 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 00:09:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-06 00:09:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:31,072 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:31,072 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 00:09:31,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:31,285 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:31,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1041095616, now seen corresponding path program 20 times [2021-06-06 00:09:31,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:31,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422095607] [2021-06-06 00:09:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:31,313 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 00:09:31,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:31,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422095607] [2021-06-06 00:09:31,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422095607] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:31,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325725992] [2021-06-06 00:09:31,313 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) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:31,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:31,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:31,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:31,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:31,378 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 00:09:31,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325725992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:31,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:31,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:09:31,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137180349] [2021-06-06 00:09:31,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:09:31,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:31,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:09:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:09:31,380 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 00:09:31,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:31,627 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-06 00:09:31,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:09:31,627 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 00:09:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:31,630 INFO L225 Difference]: With dead ends: 1555 [2021-06-06 00:09:31,630 INFO L226 Difference]: Without dead ends: 1555 [2021-06-06 00:09:31,630 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:09:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-06 00:09:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-06 00:09:31,643 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 00:09:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-06 00:09:31,644 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-06 00:09:31,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:31,644 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-06 00:09:31,644 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 00:09:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-06 00:09:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:31,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:31,646 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 00:09:31,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:31,865 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:31,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:31,865 INFO L82 PathProgramCache]: Analyzing trace with hash 861583836, now seen corresponding path program 21 times [2021-06-06 00:09:31,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:31,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565781131] [2021-06-06 00:09:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:31,889 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 00:09:31,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:31,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565781131] [2021-06-06 00:09:31,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565781131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:31,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878511224] [2021-06-06 00:09:31,889 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 00:09:31,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:31,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:31,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:31,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:31,953 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 00:09:31,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878511224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:31,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:31,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-06 00:09:31,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116466960] [2021-06-06 00:09:31,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-06 00:09:31,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:31,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-06 00:09:31,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-06 00:09:31,954 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 00:09:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:32,159 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-06 00:09:32,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:09:32,159 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 00:09:32,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:32,162 INFO L225 Difference]: With dead ends: 1605 [2021-06-06 00:09:32,162 INFO L226 Difference]: Without dead ends: 1605 [2021-06-06 00:09:32,162 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:09:32,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-06 00:09:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-06 00:09:32,175 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 00:09:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-06 00:09:32,177 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-06 00:09:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:32,177 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-06 00:09:32,177 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 00:09:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-06 00:09:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:32,179 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:32,179 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 00:09:32,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:32,393 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:32,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash 816762694, now seen corresponding path program 22 times [2021-06-06 00:09:32,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:32,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463931697] [2021-06-06 00:09:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:32,416 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 00:09:32,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:32,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463931697] [2021-06-06 00:09:32,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463931697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:32,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548536963] [2021-06-06 00:09:32,417 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 00:09:32,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:32,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:32,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:32,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:32,477 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 00:09:32,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548536963] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:32,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:32,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-06 00:09:32,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033231189] [2021-06-06 00:09:32,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-06 00:09:32,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:32,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-06 00:09:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-06 00:09:32,478 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 00:09:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:32,657 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-06 00:09:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:09:32,657 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 00:09:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:32,660 INFO L225 Difference]: With dead ends: 1524 [2021-06-06 00:09:32,660 INFO L226 Difference]: Without dead ends: 1520 [2021-06-06 00:09:32,661 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:09:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-06 00:09:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-06 00:09:32,679 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 00:09:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-06 00:09:32,681 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-06 00:09:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:32,681 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-06 00:09:32,682 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 00:09:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-06 00:09:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [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] [2021-06-06 00:09:32,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-06 00:09:32,920 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1414099352, now seen corresponding path program 23 times [2021-06-06 00:09:32,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:32,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622806026] [2021-06-06 00:09:32,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:32,946 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 00:09:32,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:32,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622806026] [2021-06-06 00:09:32,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622806026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:32,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773031461] [2021-06-06 00:09:32,946 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 00:09:32,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:32,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:32,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:33,025 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 00:09:33,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773031461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:33,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:33,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:09:33,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535741967] [2021-06-06 00:09:33,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:09:33,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:33,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:09:33,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:09:33,026 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 00:09:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:33,214 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-06 00:09:33,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:09:33,214 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 00:09:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:33,221 INFO L225 Difference]: With dead ends: 1508 [2021-06-06 00:09:33,221 INFO L226 Difference]: Without dead ends: 1496 [2021-06-06 00:09:33,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 107.3ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:09:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-06 00:09:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-06 00:09:33,234 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 00:09:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-06 00:09:33,236 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-06 00:09:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:33,236 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-06 00:09:33,236 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 00:09:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-06 00:09:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:33,238 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:33,238 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 00:09:33,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:33,454 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash 887679068, now seen corresponding path program 24 times [2021-06-06 00:09:33,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:33,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906998014] [2021-06-06 00:09:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:33,487 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 00:09:33,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:33,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906998014] [2021-06-06 00:09:33,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906998014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:33,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429609043] [2021-06-06 00:09:33,487 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 00:09:33,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:33,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:33,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:33,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:33,675 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 00:09:33,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429609043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:33,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:33,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:33,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762691141] [2021-06-06 00:09:33,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:33,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:33,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:33,676 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 00:09:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:34,141 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-06 00:09:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:09:34,141 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 00:09:34,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:34,145 INFO L225 Difference]: With dead ends: 2412 [2021-06-06 00:09:34,145 INFO L226 Difference]: Without dead ends: 2412 [2021-06-06 00:09:34,145 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 296.7ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:09:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-06 00:09:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-06 00:09:34,161 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 00:09:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-06 00:09:34,163 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-06 00:09:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:34,163 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-06 00:09:34,163 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 00:09:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-06 00:09:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:34,165 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:34,165 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 00:09:34,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-06 00:09:34,378 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1454631148, now seen corresponding path program 25 times [2021-06-06 00:09:34,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:34,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875227056] [2021-06-06 00:09:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:34,406 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 00:09:34,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:34,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875227056] [2021-06-06 00:09:34,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875227056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:34,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859428475] [2021-06-06 00:09:34,406 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 00:09:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:34,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:34,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:34,512 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 00:09:34,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859428475] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:34,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:34,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:34,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346614999] [2021-06-06 00:09:34,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:34,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:34,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:34,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:34,513 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 00:09:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:34,937 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-06 00:09:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:09:34,937 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 00:09:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:34,940 INFO L225 Difference]: With dead ends: 2335 [2021-06-06 00:09:34,940 INFO L226 Difference]: Without dead ends: 2335 [2021-06-06 00:09:34,940 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 272.3ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:09:34,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-06 00:09:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-06 00:09:34,955 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 00:09:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-06 00:09:34,957 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-06 00:09:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:34,957 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-06 00:09:34,957 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 00:09:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-06 00:09:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:34,959 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:34,959 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] [2021-06-06 00:09:35,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:35,160 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:35,160 INFO L82 PathProgramCache]: Analyzing trace with hash 282285290, now seen corresponding path program 26 times [2021-06-06 00:09:35,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:35,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616919544] [2021-06-06 00:09:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:35,189 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 00:09:35,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:35,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616919544] [2021-06-06 00:09:35,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616919544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:35,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128285488] [2021-06-06 00:09:35,189 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) [2021-06-06 00:09:35,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:35,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:35,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:35,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:35,271 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 00:09:35,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128285488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:35,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:35,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:35,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475843783] [2021-06-06 00:09:35,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:35,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:35,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:35,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:35,272 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 00:09:35,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:35,648 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-06 00:09:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:09:35,653 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 00:09:35,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:35,657 INFO L225 Difference]: With dead ends: 2285 [2021-06-06 00:09:35,657 INFO L226 Difference]: Without dead ends: 2285 [2021-06-06 00:09:35,657 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 228.4ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:09:35,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-06 00:09:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-06 00:09:35,689 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 00:09:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-06 00:09:35,691 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-06 00:09:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:35,691 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-06 00:09:35,691 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 00:09:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-06 00:09:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:35,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:35,692 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 00:09:35,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-06 00:09:35,909 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash 363661378, now seen corresponding path program 27 times [2021-06-06 00:09:35,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:35,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966317068] [2021-06-06 00:09:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:35,935 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 00:09:35,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:35,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966317068] [2021-06-06 00:09:35,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966317068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:35,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600048460] [2021-06-06 00:09:35,935 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) [2021-06-06 00:09:35,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:35,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:35,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:36,027 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 00:09:36,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600048460] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:36,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:36,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:36,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362569073] [2021-06-06 00:09:36,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:36,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:36,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:36,028 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 00:09:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:36,329 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-06 00:09:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:09:36,329 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 00:09:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:36,332 INFO L225 Difference]: With dead ends: 2176 [2021-06-06 00:09:36,332 INFO L226 Difference]: Without dead ends: 2172 [2021-06-06 00:09:36,332 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:09:36,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-06 00:09:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-06 00:09:36,347 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 00:09:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-06 00:09:36,349 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-06 00:09:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:36,349 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-06 00:09:36,349 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 00:09:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-06 00:09:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:36,351 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:36,351 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 00:09:36,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:36,561 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:36,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1294318594, now seen corresponding path program 28 times [2021-06-06 00:09:36,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:36,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933555645] [2021-06-06 00:09:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:36,592 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 00:09:36,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:36,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933555645] [2021-06-06 00:09:36,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933555645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:36,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419585261] [2021-06-06 00:09:36,593 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 00:09:36,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:36,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:36,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:36,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:36,694 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 00:09:36,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419585261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:36,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:36,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:36,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738799031] [2021-06-06 00:09:36,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:36,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:36,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:36,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:36,695 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 00:09:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:37,072 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-06 00:09:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:09:37,073 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 00:09:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:37,075 INFO L225 Difference]: With dead ends: 2199 [2021-06-06 00:09:37,075 INFO L226 Difference]: Without dead ends: 2199 [2021-06-06 00:09:37,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 239.2ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:09:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-06 00:09:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-06 00:09:37,091 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 00:09:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-06 00:09:37,092 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-06 00:09:37,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:37,093 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-06 00:09:37,093 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 00:09:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-06 00:09:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:37,094 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:37,094 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 00:09:37,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-06 00:09:37,299 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:37,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1357609548, now seen corresponding path program 29 times [2021-06-06 00:09:37,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:37,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322284151] [2021-06-06 00:09:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:37,327 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 00:09:37,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:37,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322284151] [2021-06-06 00:09:37,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322284151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:37,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215712062] [2021-06-06 00:09:37,328 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 00:09:37,352 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:37,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:37,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:37,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:37,422 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 00:09:37,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215712062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:37,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:37,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:37,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531836769] [2021-06-06 00:09:37,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:37,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:37,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:37,423 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 00:09:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:37,748 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-06 00:09:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:09:37,748 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 00:09:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:37,751 INFO L225 Difference]: With dead ends: 2156 [2021-06-06 00:09:37,751 INFO L226 Difference]: Without dead ends: 2152 [2021-06-06 00:09:37,751 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 216.8ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:09:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-06 00:09:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-06 00:09:37,766 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 00:09:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-06 00:09:37,768 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-06 00:09:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:37,768 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-06 00:09:37,768 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 00:09:37,768 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-06 00:09:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:37,770 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:37,770 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 00:09:37,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-06 00:09:37,982 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:37,983 INFO L82 PathProgramCache]: Analyzing trace with hash -354181564, now seen corresponding path program 30 times [2021-06-06 00:09:37,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:37,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030996029] [2021-06-06 00:09:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:38,010 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 00:09:38,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:38,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030996029] [2021-06-06 00:09:38,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030996029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:38,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957870447] [2021-06-06 00:09:38,011 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 00:09:38,034 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:38,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:38,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:38,083 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 00:09:38,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957870447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:38,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:38,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:38,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044419192] [2021-06-06 00:09:38,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:09:38,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:38,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:09:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:09:38,085 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 00:09:38,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:38,387 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-06 00:09:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:09:38,388 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 00:09:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:38,390 INFO L225 Difference]: With dead ends: 2097 [2021-06-06 00:09:38,390 INFO L226 Difference]: Without dead ends: 2097 [2021-06-06 00:09:38,390 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 184.5ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:09:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-06 00:09:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-06 00:09:38,406 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 00:09:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-06 00:09:38,407 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-06 00:09:38,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:38,407 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-06 00:09:38,408 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 00:09:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-06 00:09:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:38,409 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:38,409 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 00:09:38,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:38,610 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash -272805476, now seen corresponding path program 31 times [2021-06-06 00:09:38,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:38,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794313363] [2021-06-06 00:09:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:38,637 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 00:09:38,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:38,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794313363] [2021-06-06 00:09:38,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794313363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:38,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769428082] [2021-06-06 00:09:38,638 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 00:09:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:38,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:38,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:38,708 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 00:09:38,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769428082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:38,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:38,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475793574] [2021-06-06 00:09:38,709 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:09:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:38,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:09:38,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:09:38,709 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 00:09:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:38,954 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-06 00:09:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:09:38,955 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 00:09:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:38,957 INFO L225 Difference]: With dead ends: 1963 [2021-06-06 00:09:38,957 INFO L226 Difference]: Without dead ends: 1959 [2021-06-06 00:09:38,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:09:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-06 00:09:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-06 00:09:38,973 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 00:09:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-06 00:09:38,975 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-06 00:09:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:38,976 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-06 00:09:38,976 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 00:09:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-06 00:09:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:38,977 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:38,977 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 00:09:39,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:39,193 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:39,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1787897448, now seen corresponding path program 32 times [2021-06-06 00:09:39,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:39,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605715871] [2021-06-06 00:09:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:39,224 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 00:09:39,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:39,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605715871] [2021-06-06 00:09:39,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605715871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:39,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564680892] [2021-06-06 00:09:39,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:39,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:39,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:39,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:39,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:39,296 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 00:09:39,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564680892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:39,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:39,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:09:39,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089929960] [2021-06-06 00:09:39,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:09:39,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:09:39,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:09:39,297 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 00:09:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:39,476 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-06 00:09:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:09:39,476 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 00:09:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:39,478 INFO L225 Difference]: With dead ends: 1728 [2021-06-06 00:09:39,478 INFO L226 Difference]: Without dead ends: 1716 [2021-06-06 00:09:39,479 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:09:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-06 00:09:39,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-06 00:09:39,491 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 00:09:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-06 00:09:39,493 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-06 00:09:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:39,493 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-06 00:09:39,493 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 00:09:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-06 00:09:39,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:39,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:39,494 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 00:09:39,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:39,695 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash -190770732, now seen corresponding path program 33 times [2021-06-06 00:09:39,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:39,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102858904] [2021-06-06 00:09:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:39,757 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 00:09:39,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:39,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102858904] [2021-06-06 00:09:39,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102858904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:39,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855108757] [2021-06-06 00:09:39,757 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 00:09:39,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:09:39,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:39,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:39,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:39,856 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 00:09:39,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855108757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:39,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:39,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:39,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960493943] [2021-06-06 00:09:39,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:39,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:39,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:39,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:39,857 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 00:09:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:40,159 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-06 00:09:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:09:40,159 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 00:09:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:40,161 INFO L225 Difference]: With dead ends: 1821 [2021-06-06 00:09:40,161 INFO L226 Difference]: Without dead ends: 1821 [2021-06-06 00:09:40,161 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 197.3ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:09:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-06 00:09:40,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-06 00:09:40,175 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 00:09:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-06 00:09:40,177 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-06 00:09:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:40,177 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-06 00:09:40,177 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 00:09:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-06 00:09:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:40,179 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:40,179 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 00:09:40,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:40,380 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1452268422, now seen corresponding path program 34 times [2021-06-06 00:09:40,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:40,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78500099] [2021-06-06 00:09:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:40,410 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 00:09:40,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:40,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78500099] [2021-06-06 00:09:40,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78500099] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:40,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982044700] [2021-06-06 00:09:40,410 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 00:09:40,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:40,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:40,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:40,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:40,497 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 00:09:40,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982044700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:40,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:40,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-06 00:09:40,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963126145] [2021-06-06 00:09:40,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:09:40,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:40,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:09:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:09:40,498 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 00:09:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:40,741 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-06 00:09:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:09:40,741 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 00:09:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:40,743 INFO L225 Difference]: With dead ends: 1790 [2021-06-06 00:09:40,743 INFO L226 Difference]: Without dead ends: 1786 [2021-06-06 00:09:40,743 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-06 00:09:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-06 00:09:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-06 00:09:40,757 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 00:09:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-06 00:09:40,759 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-06 00:09:40,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:40,759 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-06 00:09:40,759 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 00:09:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-06 00:09:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-06 00:09:40,760 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:40,760 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 00:09:40,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-06-06 00:09:40,961 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:40,961 INFO L82 PathProgramCache]: Analyzing trace with hash 184811244, now seen corresponding path program 35 times [2021-06-06 00:09:40,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:40,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053816429] [2021-06-06 00:09:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:40,989 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 00:09:40,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:40,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053816429] [2021-06-06 00:09:40,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053816429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:40,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224424168] [2021-06-06 00:09:40,990 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 00:09:41,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:41,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:41,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:09:41,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:41,078 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 00:09:41,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224424168] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:41,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:41,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-06 00:09:41,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027668032] [2021-06-06 00:09:41,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:09:41,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:09:41,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:09:41,079 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 00:09:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:41,225 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-06 00:09:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:09:41,225 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 00:09:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:41,227 INFO L225 Difference]: With dead ends: 1649 [2021-06-06 00:09:41,227 INFO L226 Difference]: Without dead ends: 1637 [2021-06-06 00:09:41,227 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:41,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-06 00:09:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-06 00:09:41,239 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 00:09:41,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-06 00:09:41,241 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-06 00:09:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:41,241 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-06 00:09:41,241 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 00:09:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-06 00:09:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:41,243 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:41,243 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 00:09:41,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:41,457 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash -998684486, now seen corresponding path program 4 times [2021-06-06 00:09:41,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:41,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891582725] [2021-06-06 00:09:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:41,942 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 00:09:41,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:41,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891582725] [2021-06-06 00:09:41,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891582725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:41,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510480828] [2021-06-06 00:09:41,943 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 00:09:41,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:09:41,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:41,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:09:41,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,384 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,390 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,396 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,402 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,410 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,416 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 28 treesize of output 16 [2021-06-06 00:09:42,417 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,423 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 36 treesize of output 19 [2021-06-06 00:09:42,423 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,430 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:09:42,435 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,441 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:09:42,448 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:09:42,458 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,466 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,472 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:09:42,472 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:42,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:42,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:42,477 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:42,546 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:09:42,548 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 00:09:42,549 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:09:42,613 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 00:09:42,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510480828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:42,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:42,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:09:42,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038866923] [2021-06-06 00:09:42,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:42,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:42,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:42,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:42,614 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 00:09:43,251 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-06-06 00:09:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:43,543 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-06 00:09:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:09:43,544 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 00:09:43,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:43,546 INFO L225 Difference]: With dead ends: 1517 [2021-06-06 00:09:43,546 INFO L226 Difference]: Without dead ends: 1502 [2021-06-06 00:09:43,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1213.4ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:09:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-06 00:09:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-06 00:09:43,557 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 00:09:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-06 00:09:43,559 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-06 00:09:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:43,560 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-06 00:09:43,560 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 00:09:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-06 00:09:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:43,561 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:43,561 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 00:09:43,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-06-06 00:09:43,768 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:43,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1267884794, now seen corresponding path program 5 times [2021-06-06 00:09:43,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:43,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760616076] [2021-06-06 00:09:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:44,402 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-06 00:09:44,449 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 00:09:44,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:44,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760616076] [2021-06-06 00:09:44,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760616076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:44,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156746970] [2021-06-06 00:09:44,449 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 00:09:44,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:09:44,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:44,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:09:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:44,902 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-06 00:09:44,955 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_5, v_prenex_7], 3=[v_prenex_9, A]} [2021-06-06 00:09:44,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:44,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:44,963 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:09:44,964 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:44,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:44,969 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 33 treesize of output 19 [2021-06-06 00:09:44,970 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,083 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-06-06 00:09:45,084 INFO L628 ElimStorePlain]: treesize reduction 119, result has 50.4 percent of original size [2021-06-06 00:09:45,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:45,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:45,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:09:45,089 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,128 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:45,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:45,132 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 00:09:45,134 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,168 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:45,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:45,172 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:09:45,173 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:45,205 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:45,208 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:09:45,208 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:281, output treesize:56 [2021-06-06 00:09:45,271 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 00:09:45,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156746970] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:45,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:45,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:09:45,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613559870] [2021-06-06 00:09:45,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:45,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:45,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:45,272 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 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 00:09:46,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:46,014 INFO L93 Difference]: Finished difference Result 1495 states and 4899 transitions. [2021-06-06 00:09:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:09:46,014 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 00:09:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:46,016 INFO L225 Difference]: With dead ends: 1495 [2021-06-06 00:09:46,016 INFO L226 Difference]: Without dead ends: 1480 [2021-06-06 00:09:46,016 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1420.8ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:09:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-06 00:09:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1150. [2021-06-06 00:09:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.3568320278503045) internal successors, (3857), 1149 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions. [2021-06-06 00:09:46,029 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26 [2021-06-06 00:09:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:46,029 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions. [2021-06-06 00:09:46,030 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 00:09:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions. [2021-06-06 00:09:46,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:46,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:46,031 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 00:09:46,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:46,232 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:46,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1435653194, now seen corresponding path program 36 times [2021-06-06 00:09:46,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:46,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447517293] [2021-06-06 00:09:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:46,732 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 00:09:46,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:46,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447517293] [2021-06-06 00:09:46,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447517293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:46,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125471952] [2021-06-06 00:09:46,732 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 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 00:09:46,758 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:46,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:46,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:09:46,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:47,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:47,306 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:47,316 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,324 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:09:47,325 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,333 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 00:09:47,333 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,341 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 00:09:47,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,349 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 35 treesize of output 19 [2021-06-06 00:09:47,349 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,357 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 00:09:47,358 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:47,366 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,374 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 00:09:47,375 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:47,383 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,392 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-06 00:09:47,393 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,400 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:09:47,401 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,409 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-06 00:09:47,410 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,417 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:09:47,417 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:47,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:47,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:47,423 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:47,449 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-06 00:09:47,450 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 00:09:47,450 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:09:47,479 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 00:09:47,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125471952] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:47,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:47,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:09:47,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958659467] [2021-06-06 00:09:47,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:09:47,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:09:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:09:47,480 INFO L87 Difference]: Start difference. First operand 1150 states and 3857 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 00:09:47,772 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2021-06-06 00:09:48,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:48,883 INFO L93 Difference]: Finished difference Result 1607 states and 5192 transitions. [2021-06-06 00:09:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:09:48,883 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 00:09:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:48,885 INFO L225 Difference]: With dead ends: 1607 [2021-06-06 00:09:48,886 INFO L226 Difference]: Without dead ends: 1592 [2021-06-06 00:09:48,886 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1714.9ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:09:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-06 00:09:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180. [2021-06-06 00:09:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.340966921119593) internal successors, (3939), 1179 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions. [2021-06-06 00:09:48,900 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26 [2021-06-06 00:09:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:48,900 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions. [2021-06-06 00:09:48,900 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 00:09:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions. [2021-06-06 00:09:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:48,901 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:48,901 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 00:09:49,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-06 00:09:49,102 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:49,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:49,102 INFO L82 PathProgramCache]: Analyzing trace with hash -630606018, now seen corresponding path program 6 times [2021-06-06 00:09:49,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:49,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585434576] [2021-06-06 00:09:49,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:49,555 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 00:09:49,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:49,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585434576] [2021-06-06 00:09:49,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585434576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:49,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72803033] [2021-06-06 00:09:49,555 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 00:09:49,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:09:49,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:49,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:09:49,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:49,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,831 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 00:09:49,832 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,839 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,840 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 00:09:49,840 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,848 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,848 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 33 treesize of output 19 [2021-06-06 00:09:49,849 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:09:49,862 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,873 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 00:09:49,883 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,894 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,894 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 00:09:49,896 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,904 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,904 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 00:09:49,905 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,915 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,915 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 00:09:49,920 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,933 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:49,933 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 00:09:49,934 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,944 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,945 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 36 treesize of output 22 [2021-06-06 00:09:49,945 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,956 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,956 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 00:09:49,957 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,966 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:49,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:09:49,967 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,978 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:49,978 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 00:09:49,981 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:49,992 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:49,992 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 00:09:49,994 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:49,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:50,011 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:09:50,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:09:50,013 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:50,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:50,019 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:09:50,019 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 00:09:50,020 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:50,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:09:50,096 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:09:50,096 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:09:50,300 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 00:09:50,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72803033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:50,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:50,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:09:50,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690190238] [2021-06-06 00:09:50,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:50,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:50,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:50,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:50,301 INFO L87 Difference]: Start difference. First operand 1180 states and 3939 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 00:09:50,663 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-06-06 00:09:50,920 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-06-06 00:09:51,326 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-06 00:09:51,852 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-06-06 00:09:52,005 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-06 00:09:52,221 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-06-06 00:09:52,467 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2021-06-06 00:09:52,608 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-06-06 00:09:52,874 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-06 00:09:53,150 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-06 00:09:53,396 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-06-06 00:09:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:53,444 INFO L93 Difference]: Finished difference Result 1842 states and 5907 transitions. [2021-06-06 00:09:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:09:53,445 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 00:09:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:53,447 INFO L225 Difference]: With dead ends: 1842 [2021-06-06 00:09:53,447 INFO L226 Difference]: Without dead ends: 1827 [2021-06-06 00:09:53,447 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3192.1ms TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:09:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2021-06-06 00:09:53,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1198. [2021-06-06 00:09:53,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.346700083542189) internal successors, (4006), 1197 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions. [2021-06-06 00:09:53,463 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26 [2021-06-06 00:09:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:53,463 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions. [2021-06-06 00:09:53,463 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 00:09:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions. [2021-06-06 00:09:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:53,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:53,465 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 00:09:53,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:09:53,665 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash 919775546, now seen corresponding path program 37 times [2021-06-06 00:09:53,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:53,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129040207] [2021-06-06 00:09:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:54,064 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 00:09:54,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:54,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129040207] [2021-06-06 00:09:54,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129040207] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:54,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276240238] [2021-06-06 00:09:54,065 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 00:09:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:54,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:09:54,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:54,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,644 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 41 treesize of output 19 [2021-06-06 00:09:54,645 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,652 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 7 [2021-06-06 00:09:54,653 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:54,662 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,669 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 00:09:54,670 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:54,691 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,701 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 19 [2021-06-06 00:09:54,701 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,709 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 37 treesize of output 13 [2021-06-06 00:09:54,711 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,719 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 37 treesize of output 19 [2021-06-06 00:09:54,720 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:54,728 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,738 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 00:09:54,738 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,749 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 00:09:54,750 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,760 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 00:09:54,761 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,769 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 00:09:54,769 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,776 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 00:09:54,777 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,784 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,784 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-06-06 00:09:54,784 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:54,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:09:54,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:54,792 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:54,822 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-06 00:09:54,823 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 00:09:54,823 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-06 00:09:54,858 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 00:09:54,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276240238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:54,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:09:54,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:09:54,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852551516] [2021-06-06 00:09:54,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:09:54,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:09:54,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:09:54,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:09:54,859 INFO L87 Difference]: Start difference. First operand 1198 states and 4006 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 00:09:55,195 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2021-06-06 00:09:55,878 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2021-06-06 00:09:56,017 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2021-06-06 00:09:56,192 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-06 00:09:56,329 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2021-06-06 00:09:56,750 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-06 00:09:57,163 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2021-06-06 00:09:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:09:57,270 INFO L93 Difference]: Finished difference Result 1797 states and 5747 transitions. [2021-06-06 00:09:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:09:57,271 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 00:09:57,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:09:57,273 INFO L225 Difference]: With dead ends: 1797 [2021-06-06 00:09:57,273 INFO L226 Difference]: Without dead ends: 1782 [2021-06-06 00:09:57,274 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2498.4ms TimeCoverageRelationStatistics Valid=356, Invalid=1624, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:09:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2021-06-06 00:09:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1206. [2021-06-06 00:09:57,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.349377593360996) internal successors, (4036), 1205 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:09:57,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions. [2021-06-06 00:09:57,289 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26 [2021-06-06 00:09:57,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:09:57,289 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions. [2021-06-06 00:09:57,289 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 00:09:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions. [2021-06-06 00:09:57,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:09:57,291 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:09:57,291 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 00:09:57,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2021-06-06 00:09:57,491 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:09:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:09:57,492 INFO L82 PathProgramCache]: Analyzing trace with hash -56543298, now seen corresponding path program 38 times [2021-06-06 00:09:57,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:09:57,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139422955] [2021-06-06 00:09:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:09:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:09:57,997 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 00:09:57,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:09:57,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139422955] [2021-06-06 00:09:57,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139422955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:09:57,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118696721] [2021-06-06 00:09:57,997 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 00:09:58,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:09:58,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:09:58,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:09:58,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:09:58,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,713 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:09:58,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:58,721 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,766 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:09:58,766 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 00:09:58,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,795 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:58,795 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 00:09:58,795 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,836 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:09:58,837 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 00:09:58,843 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,884 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:09:58,885 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-06 00:09:58,906 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,944 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2021-06-06 00:09:58,945 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 42 [2021-06-06 00:09:58,947 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:58,966 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:58,966 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 00:09:58,967 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:58,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,013 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:09:59,013 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 00:09:59,045 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,091 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:09:59,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:59,098 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,120 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:59,120 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 00:09:59,121 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,165 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:09:59,165 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 00:09:59,172 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,192 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:59,192 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 00:09:59,193 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,212 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:59,212 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:09:59,212 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,232 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:59,232 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 00:09:59,232 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,277 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:09:59,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:09:59,287 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:09:59,298 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:09:59,298 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 1 [2021-06-06 00:09:59,299 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:09:59,581 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-06 00:09:59,581 INFO L628 ElimStorePlain]: treesize reduction 109, result has 76.9 percent of original size [2021-06-06 00:09:59,597 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 00:09:59,597 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:437 [2021-06-06 00:09:59,843 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-06 00:09:59,996 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-06-06 00:10:00,032 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 00:10:00,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118696721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:00,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:00,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-06-06 00:10:00,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040024323] [2021-06-06 00:10:00,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:10:00,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:00,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:10:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:10:00,034 INFO L87 Difference]: Start difference. First operand 1206 states and 4036 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 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 00:10:01,571 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2021-06-06 00:10:01,709 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-06 00:10:01,911 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-06 00:10:02,371 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-06-06 00:10:02,510 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-06-06 00:10:02,899 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-06-06 00:10:03,241 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-06-06 00:10:03,389 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-06 00:10:03,545 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-06 00:10:03,933 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2021-06-06 00:10:04,295 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-06-06 00:10:04,503 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 46 [2021-06-06 00:10:04,783 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-06 00:10:05,044 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-06 00:10:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:05,284 INFO L93 Difference]: Finished difference Result 2305 states and 7128 transitions. [2021-06-06 00:10:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:10:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 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 26 [2021-06-06 00:10:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:05,287 INFO L225 Difference]: With dead ends: 2305 [2021-06-06 00:10:05,288 INFO L226 Difference]: Without dead ends: 2260 [2021-06-06 00:10:05,288 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 5648.5ms TimeCoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:10:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2021-06-06 00:10:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1349. [2021-06-06 00:10:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.306379821958457) internal successors, (4457), 1348 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4457 transitions. [2021-06-06 00:10:05,308 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4457 transitions. Word has length 26 [2021-06-06 00:10:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:05,308 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 4457 transitions. [2021-06-06 00:10:05,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 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 00:10:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4457 transitions. [2021-06-06 00:10:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:05,310 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:05,310 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 00:10:05,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:05,510 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2141610526, now seen corresponding path program 7 times [2021-06-06 00:10:05,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:05,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118325918] [2021-06-06 00:10:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:06,020 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 00:10:06,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:06,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118325918] [2021-06-06 00:10:06,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118325918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:06,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176458422] [2021-06-06 00:10:06,021 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 00:10:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:06,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:10:06,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:06,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,442 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,449 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:06,454 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,471 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 31 treesize of output 19 [2021-06-06 00:10:06,472 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,478 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,484 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:10:06,485 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,490 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:10:06,491 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,498 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,504 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,511 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:06,521 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,528 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,534 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-06 00:10:06,540 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:06,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:06,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:06,545 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:06,615 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:10:06,618 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 00:10:06,618 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:10:06,668 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 00:10:06,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176458422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:06,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:06,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:10:06,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219584104] [2021-06-06 00:10:06,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:10:06,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:06,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:10:06,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:10:06,669 INFO L87 Difference]: Start difference. First operand 1349 states and 4457 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 00:10:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:07,755 INFO L93 Difference]: Finished difference Result 1744 states and 5646 transitions. [2021-06-06 00:10:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:10:07,755 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 00:10:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:07,758 INFO L225 Difference]: With dead ends: 1744 [2021-06-06 00:10:07,758 INFO L226 Difference]: Without dead ends: 1729 [2021-06-06 00:10:07,758 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1390.6ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:10:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-06-06 00:10:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1360. [2021-06-06 00:10:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3038999264164826) internal successors, (4490), 1359 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4490 transitions. [2021-06-06 00:10:07,780 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4490 transitions. Word has length 26 [2021-06-06 00:10:07,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:07,781 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 4490 transitions. [2021-06-06 00:10:07,781 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 00:10:07,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4490 transitions. [2021-06-06 00:10:07,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:07,783 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:07,783 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 00:10:07,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2021-06-06 00:10:07,995 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:07,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:07,996 INFO L82 PathProgramCache]: Analyzing trace with hash 124958754, now seen corresponding path program 8 times [2021-06-06 00:10:07,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:07,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215999294] [2021-06-06 00:10:07,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:08,586 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-06 00:10:08,631 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 00:10:08,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:08,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215999294] [2021-06-06 00:10:08,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215999294] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:08,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272640384] [2021-06-06 00:10:08,632 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) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:08,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:10:08,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:08,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:10:08,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:08,991 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-06 00:10:09,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:09,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:09,125 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-06 00:10:09,125 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:10:09,126 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:09,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:09,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:09,154 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:10:09,155 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 30 [2021-06-06 00:10:09,156 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:09,529 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 130 [2021-06-06 00:10:09,529 INFO L628 ElimStorePlain]: treesize reduction 403, result has 46.9 percent of original size [2021-06-06 00:10:09,547 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:09,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:09,552 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:09,676 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-06 00:10:09,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:09,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:09,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:09,699 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:09,699 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37 [2021-06-06 00:10:09,702 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:09,842 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-06 00:10:09,842 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:09,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:09,865 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:10:09,865 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-06 00:10:09,872 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:09,996 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:10:09,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:10,019 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:10:10,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:10,020 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:10,146 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:10:10,147 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:10,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:10,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:10,165 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:10:10,165 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-06 00:10:10,166 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:10,281 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:10:10,282 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:10,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:10,297 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:10,297 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-06-06 00:10:10,299 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:10,412 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-06 00:10:10,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:10,431 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:10,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:10,435 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:10,553 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-06 00:10:10,554 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:10,578 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 00:10:10,578 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 16 variables, input treesize:825, output treesize:551 [2021-06-06 00:10:10,848 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-06 00:10:11,064 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-06 00:10:11,169 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 00:10:11,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272640384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:11,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:11,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:10:11,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932710250] [2021-06-06 00:10:11,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:11,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:11,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:11,170 INFO L87 Difference]: Start difference. First operand 1360 states and 4490 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 00:10:12,156 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-06-06 00:10:12,525 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-06-06 00:10:12,761 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 46 [2021-06-06 00:10:13,078 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-06-06 00:10:13,443 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-06 00:10:13,923 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-06 00:10:14,346 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-06-06 00:10:14,710 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-06-06 00:10:14,859 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-06 00:10:15,122 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2021-06-06 00:10:15,479 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-06 00:10:15,893 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-06-06 00:10:16,127 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2021-06-06 00:10:16,624 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-06-06 00:10:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:16,712 INFO L93 Difference]: Finished difference Result 2016 states and 6372 transitions. [2021-06-06 00:10:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:10:16,712 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 00:10:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:16,715 INFO L225 Difference]: With dead ends: 2016 [2021-06-06 00:10:16,715 INFO L226 Difference]: Without dead ends: 2001 [2021-06-06 00:10:16,716 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 6036.8ms TimeCoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:10:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2021-06-06 00:10:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1371. [2021-06-06 00:10:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.3124087591240876) internal successors, (4538), 1370 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4538 transitions. [2021-06-06 00:10:16,736 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4538 transitions. Word has length 26 [2021-06-06 00:10:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:16,736 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 4538 transitions. [2021-06-06 00:10:16,736 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 00:10:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4538 transitions. [2021-06-06 00:10:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:16,738 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:16,738 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, 1, 1] [2021-06-06 00:10:16,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable518 [2021-06-06 00:10:16,938 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:16,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1812450954, now seen corresponding path program 9 times [2021-06-06 00:10:16,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:16,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855738853] [2021-06-06 00:10:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:17,269 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 00:10:17,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:17,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855738853] [2021-06-06 00:10:17,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855738853] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:17,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11147097] [2021-06-06 00:10:17,270 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 00:10:17,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:10:17,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:17,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:17,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:17,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:17,697 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:17,703 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:17,709 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:17,717 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,722 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:10:17,724 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:17,737 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:17,744 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,749 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:10:17,750 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,755 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 28 treesize of output 16 [2021-06-06 00:10:17,755 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,760 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:10:17,761 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:17,766 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:10:17,772 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,777 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:10:17,777 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:17,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:17,781 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 26 treesize of output 13 [2021-06-06 00:10:17,781 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:17,855 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:10:17,857 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 00:10:17,857 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:10:17,904 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 00:10:17,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11147097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:17,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:17,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:10:17,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903765188] [2021-06-06 00:10:17,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:10:17,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:17,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:10:17,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:10:17,905 INFO L87 Difference]: Start difference. First operand 1371 states and 4538 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 00:10:19,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:19,135 INFO L93 Difference]: Finished difference Result 1859 states and 6002 transitions. [2021-06-06 00:10:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:10:19,135 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 00:10:19,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:19,137 INFO L225 Difference]: With dead ends: 1859 [2021-06-06 00:10:19,137 INFO L226 Difference]: Without dead ends: 1844 [2021-06-06 00:10:19,138 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1405.7ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:10:19,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-06-06 00:10:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1380. [2021-06-06 00:10:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-06 00:10:19,155 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-06 00:10:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:19,156 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-06 00:10:19,156 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 00:10:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-06 00:10:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:19,157 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:19,158 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 00:10:19,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:19,358 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:19,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1980260046, now seen corresponding path program 10 times [2021-06-06 00:10:19,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:19,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257353298] [2021-06-06 00:10:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:19,799 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 00:10:19,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:19,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257353298] [2021-06-06 00:10:19,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257353298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:19,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762158990] [2021-06-06 00:10:19,799 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 00:10:19,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:10:19,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:19,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:19,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:20,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:20,183 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:20,188 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:20,193 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,197 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 00:10:20,198 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:20,205 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:20,210 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,215 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:10:20,215 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:20,221 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:20,226 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:20,232 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:20,237 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:10:20,243 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:20,248 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:20,253 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:20,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:20,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:10:20,257 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:20,325 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:10:20,326 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 00:10:20,326 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:10:20,380 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 00:10:20,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762158990] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:20,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:20,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:10:20,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335955798] [2021-06-06 00:10:20,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:10:20,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:10:20,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:10:20,381 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 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 00:10:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:21,012 INFO L93 Difference]: Finished difference Result 1722 states and 5631 transitions. [2021-06-06 00:10:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:10:21,012 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 00:10:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:21,015 INFO L225 Difference]: With dead ends: 1722 [2021-06-06 00:10:21,015 INFO L226 Difference]: Without dead ends: 1707 [2021-06-06 00:10:21,015 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 991.9ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:10:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-06-06 00:10:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1380. [2021-06-06 00:10:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-06 00:10:21,031 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-06 00:10:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:21,031 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-06 00:10:21,031 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 00:10:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-06 00:10:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:21,033 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:21,033 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 00:10:21,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable599 [2021-06-06 00:10:21,234 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:21,234 INFO L82 PathProgramCache]: Analyzing trace with hash 247191222, now seen corresponding path program 11 times [2021-06-06 00:10:21,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:21,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901568065] [2021-06-06 00:10:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:21,605 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 00:10:21,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:21,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901568065] [2021-06-06 00:10:21,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901568065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:21,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706585376] [2021-06-06 00:10:21,606 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 00:10:21,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:10:21,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:21,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:10:21,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:21,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:21,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:21,987 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 00:10:21,988 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:21,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:21,996 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:21,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:21,997 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,007 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:22,008 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 00:10:22,010 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,035 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:22,036 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,045 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,045 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 00:10:22,045 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,056 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:22,056 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 00:10:22,058 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,068 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:22,069 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 00:10:22,072 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,084 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:22,084 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 33 treesize of output 27 [2021-06-06 00:10:22,086 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,095 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,095 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 31 treesize of output 19 [2021-06-06 00:10:22,096 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,107 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:22,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:22,110 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,118 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,119 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 00:10:22,119 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,127 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:22,128 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,138 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:22,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:22,139 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:22,149 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 33 treesize of output 27 [2021-06-06 00:10:22,150 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,157 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,158 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 36 treesize of output 22 [2021-06-06 00:10:22,158 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:22,163 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:22,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:22,164 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:22,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:22,258 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 00:10:22,258 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-06 00:10:22,438 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 00:10:22,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706585376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:22,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:22,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:10:22,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218749729] [2021-06-06 00:10:22,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:22,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:22,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:22,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:22,439 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 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 00:10:22,888 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 39 [2021-06-06 00:10:23,562 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2021-06-06 00:10:23,955 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2021-06-06 00:10:24,090 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-06-06 00:10:24,825 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-06 00:10:24,987 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-06 00:10:25,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:25,135 INFO L93 Difference]: Finished difference Result 2174 states and 6962 transitions. [2021-06-06 00:10:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:10:25,135 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 00:10:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:25,138 INFO L225 Difference]: With dead ends: 2174 [2021-06-06 00:10:25,139 INFO L226 Difference]: Without dead ends: 2144 [2021-06-06 00:10:25,139 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2678.7ms TimeCoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:10:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-06-06 00:10:25,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1380. [2021-06-06 00:10:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-06 00:10:25,168 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-06 00:10:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:25,168 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-06 00:10:25,168 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 00:10:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-06 00:10:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:25,170 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:25,170 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 00:10:25,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable631 [2021-06-06 00:10:25,371 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:25,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:25,371 INFO L82 PathProgramCache]: Analyzing trace with hash 317421942, now seen corresponding path program 12 times [2021-06-06 00:10:25,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:25,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748653392] [2021-06-06 00:10:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:25,898 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 00:10:25,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:25,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748653392] [2021-06-06 00:10:25,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748653392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:25,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824248693] [2021-06-06 00:10:25,899 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 00:10:25,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:10:25,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:25,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:10:25,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:26,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,182 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,182 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 00:10:26,183 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,190 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:26,191 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,199 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,199 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 33 treesize of output 19 [2021-06-06 00:10:26,200 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,209 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:26,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:26,211 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,221 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:26,221 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 00:10:26,224 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:26,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:26,235 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,243 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:26,243 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,274 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:26,274 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 00:10:26,286 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,296 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:26,296 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 00:10:26,297 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,306 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,307 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 36 treesize of output 22 [2021-06-06 00:10:26,307 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,332 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,333 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 33 treesize of output 19 [2021-06-06 00:10:26,341 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,349 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,349 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 00:10:26,350 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,360 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:26,360 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 00:10:26,362 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,375 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:26,375 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 00:10:26,377 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,388 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:10:26,389 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 00:10:26,390 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:26,395 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:10:26,395 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 00:10:26,396 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:26,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:26,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:10:26,470 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:10:26,652 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 00:10:26,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824248693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:26,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:26,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:10:26,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315738023] [2021-06-06 00:10:26,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:10:26,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:26,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:10:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:10:26,653 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 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 00:10:27,166 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-06-06 00:10:28,331 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2021-06-06 00:10:28,540 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2021-06-06 00:10:28,713 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-06-06 00:10:28,857 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-06-06 00:10:29,114 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-06 00:10:29,446 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-06 00:10:29,714 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2021-06-06 00:10:29,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:29,772 INFO L93 Difference]: Finished difference Result 1982 states and 6430 transitions. [2021-06-06 00:10:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:10:29,773 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 00:10:29,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:29,775 INFO L225 Difference]: With dead ends: 1982 [2021-06-06 00:10:29,775 INFO L226 Difference]: Without dead ends: 1967 [2021-06-06 00:10:29,775 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 3315.5ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:10:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-06-06 00:10:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1380. [2021-06-06 00:10:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-06 00:10:29,793 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-06 00:10:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:29,793 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-06 00:10:29,793 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 00:10:29,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-06 00:10:29,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:29,795 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:29,795 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 00:10:29,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable672 [2021-06-06 00:10:29,996 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1219202938, now seen corresponding path program 39 times [2021-06-06 00:10:29,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:29,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847693465] [2021-06-06 00:10:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:30,457 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 00:10:30,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:30,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847693465] [2021-06-06 00:10:30,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847693465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:30,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388616438] [2021-06-06 00:10:30,458 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 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 00:10:30,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:10:30,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:30,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:30,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:31,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,076 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 00:10:31,077 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,084 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 00:10:31,085 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,092 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 00:10:31,093 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:31,100 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,122 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 00:10:31,123 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,130 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 00:10:31,131 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,138 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 00:10:31,138 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,145 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 00:10:31,146 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,153 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 00:10:31,153 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,160 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 00:10:31,161 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:31,168 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,174 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 00:10:31,175 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:31,182 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,188 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 34 treesize of output 16 [2021-06-06 00:10:31,189 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:31,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:31,193 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-06 00:10:31,193 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:31,215 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-06 00:10:31,216 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 00:10:31,217 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:10:31,250 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 00:10:31,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388616438] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:31,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:31,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:10:31,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289253063] [2021-06-06 00:10:31,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:31,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:31,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:31,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:31,251 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 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 00:10:32,084 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2021-06-06 00:10:32,595 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2021-06-06 00:10:32,869 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2021-06-06 00:10:33,013 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-06-06 00:10:33,437 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-06-06 00:10:34,541 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2021-06-06 00:10:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:35,210 INFO L93 Difference]: Finished difference Result 3227 states and 9972 transitions. [2021-06-06 00:10:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:10:35,210 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 00:10:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:35,214 INFO L225 Difference]: With dead ends: 3227 [2021-06-06 00:10:35,215 INFO L226 Difference]: Without dead ends: 3182 [2021-06-06 00:10:35,215 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 3943.0ms TimeCoverageRelationStatistics Valid=669, Invalid=3363, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:10:35,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2021-06-06 00:10:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 1395. [2021-06-06 00:10:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1394 states have (on average 3.33142037302726) internal successors, (4644), 1394 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 4644 transitions. [2021-06-06 00:10:35,240 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 4644 transitions. Word has length 26 [2021-06-06 00:10:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:35,240 INFO L482 AbstractCegarLoop]: Abstraction has 1395 states and 4644 transitions. [2021-06-06 00:10:35,240 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 00:10:35,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 4644 transitions. [2021-06-06 00:10:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:35,242 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:35,242 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 00:10:35,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable689 [2021-06-06 00:10:35,442 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:35,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1873451990, now seen corresponding path program 40 times [2021-06-06 00:10:35,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:35,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91514309] [2021-06-06 00:10:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:35,941 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 00:10:35,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:35,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91514309] [2021-06-06 00:10:35,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91514309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:35,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542158491] [2021-06-06 00:10:35,941 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 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 00:10:35,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:10:35,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:35,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:10:35,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:36,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,487 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 35 treesize of output 19 [2021-06-06 00:10:36,488 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,494 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 00:10:36,495 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,502 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 00:10:36,503 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,510 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:10:36,511 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,518 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 00:10:36,519 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:36,526 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,533 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 00:10:36,534 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,540 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-06 00:10:36,541 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:36,553 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,560 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:10:36,561 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,572 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 00:10:36,572 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:36,580 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:10:36,587 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,593 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 39 treesize of output 16 [2021-06-06 00:10:36,594 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:36,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:36,598 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 00:10:36,599 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:36,622 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-06 00:10:36,623 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 00:10:36,624 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:10:36,657 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 00:10:36,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542158491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:36,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:36,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:10:36,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407333540] [2021-06-06 00:10:36,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:36,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:36,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:36,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:36,658 INFO L87 Difference]: Start difference. First operand 1395 states and 4644 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 00:10:37,190 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2021-06-06 00:10:37,736 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-06-06 00:10:38,017 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2021-06-06 00:10:38,387 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-06-06 00:10:38,677 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-06 00:10:38,861 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-06-06 00:10:39,025 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:10:39,299 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-06-06 00:10:40,167 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-06-06 00:10:40,338 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-06-06 00:10:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:40,573 INFO L93 Difference]: Finished difference Result 3009 states and 9476 transitions. [2021-06-06 00:10:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:10:40,573 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 00:10:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:40,577 INFO L225 Difference]: With dead ends: 3009 [2021-06-06 00:10:40,577 INFO L226 Difference]: Without dead ends: 2964 [2021-06-06 00:10:40,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3816.2ms TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:10:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2021-06-06 00:10:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1398. [2021-06-06 00:10:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 3.3335719398711525) internal successors, (4657), 1397 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4657 transitions. [2021-06-06 00:10:40,600 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4657 transitions. Word has length 26 [2021-06-06 00:10:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:40,600 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 4657 transitions. [2021-06-06 00:10:40,601 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 00:10:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4657 transitions. [2021-06-06 00:10:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:40,602 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:40,602 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 00:10:40,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable795 [2021-06-06 00:10:40,803 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:40,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash -39803338, now seen corresponding path program 41 times [2021-06-06 00:10:40,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:40,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772771683] [2021-06-06 00:10:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:41,284 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 00:10:41,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:41,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772771683] [2021-06-06 00:10:41,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772771683] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:41,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402103611] [2021-06-06 00:10:41,284 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 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 00:10:41,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:10:41,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:41,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:10:41,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:41,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,771 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-06 00:10:41,771 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 34 [2021-06-06 00:10:41,775 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,802 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-06 00:10:41,802 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 37 [2021-06-06 00:10:41,806 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,831 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-06 00:10:41,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-06 00:10:41,832 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,858 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:41,858 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 25 treesize of output 45 [2021-06-06 00:10:41,869 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,894 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-06 00:10:41,895 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 43 treesize of output 25 [2021-06-06 00:10:41,896 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,914 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:41,914 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 00:10:41,915 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,932 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:41,932 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 00:10:41,933 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,956 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-06 00:10:41,957 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 00:10:41,958 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,974 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:41,974 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 43 treesize of output 1 [2021-06-06 00:10:41,975 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,992 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:41,992 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 00:10:41,992 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:41,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,017 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-06 00:10:42,017 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 00:10:42,021 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:42,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,036 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:42,036 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 36 treesize of output 1 [2021-06-06 00:10:42,036 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:42,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,052 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:42,052 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 00:10:42,053 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:42,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,080 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:42,080 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 45 treesize of output 1 [2021-06-06 00:10:42,081 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:42,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,095 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:42,095 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 00:10:42,096 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:42,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:42,105 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-06 00:10:42,105 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 1 [2021-06-06 00:10:42,105 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:42,204 INFO L628 ElimStorePlain]: treesize reduction 66, result has 65.3 percent of original size [2021-06-06 00:10:42,207 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 00:10:42,207 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-06 00:10:42,336 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 00:10:42,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402103611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:42,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:42,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:10:42,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925081963] [2021-06-06 00:10:42,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:42,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:42,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:42,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:42,337 INFO L87 Difference]: Start difference. First operand 1398 states and 4657 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 00:10:42,793 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-06-06 00:10:42,969 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-06 00:10:43,093 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-06-06 00:10:43,449 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-06-06 00:10:43,610 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-06-06 00:10:44,177 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-06-06 00:10:44,662 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-06-06 00:10:44,968 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2021-06-06 00:10:45,159 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2021-06-06 00:10:45,507 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2021-06-06 00:10:45,744 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2021-06-06 00:10:46,115 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2021-06-06 00:10:46,342 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2021-06-06 00:10:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:46,972 INFO L93 Difference]: Finished difference Result 3194 states and 9881 transitions. [2021-06-06 00:10:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:10:46,972 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 00:10:46,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:46,976 INFO L225 Difference]: With dead ends: 3194 [2021-06-06 00:10:46,976 INFO L226 Difference]: Without dead ends: 3134 [2021-06-06 00:10:46,977 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4386.6ms TimeCoverageRelationStatistics Valid=743, Invalid=3039, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:10:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-06-06 00:10:46,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1411. [2021-06-06 00:10:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.3453900709219857) internal successors, (4717), 1410 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4717 transitions. [2021-06-06 00:10:47,000 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4717 transitions. Word has length 26 [2021-06-06 00:10:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:47,000 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4717 transitions. [2021-06-06 00:10:47,000 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 00:10:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4717 transitions. [2021-06-06 00:10:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:47,002 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:47,002 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 00:10:47,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable891 [2021-06-06 00:10:47,203 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:47,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:47,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1882815202, now seen corresponding path program 13 times [2021-06-06 00:10:47,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:47,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579798566] [2021-06-06 00:10:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:47,522 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 00:10:47,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:47,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579798566] [2021-06-06 00:10:47,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579798566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:47,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508029055] [2021-06-06 00:10:47,522 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 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 00:10:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:47,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:10:47,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:47,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:10:47,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:47,895 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:47,906 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,912 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 28 treesize of output 16 [2021-06-06 00:10:47,913 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,918 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 21 treesize of output 13 [2021-06-06 00:10:47,918 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:47,924 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:47,934 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:47,940 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:47,945 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:10:47,950 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,955 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 28 treesize of output 16 [2021-06-06 00:10:47,955 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:47,961 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,966 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 31 treesize of output 19 [2021-06-06 00:10:47,966 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,971 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 21 treesize of output 13 [2021-06-06 00:10:47,972 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:47,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:47,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:10:47,975 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 33 treesize of output 19 [2021-06-06 00:10:47,976 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:48,045 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:10:48,047 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 00:10:48,047 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:10:48,106 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 00:10:48,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508029055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:48,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:48,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:10:48,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187721498] [2021-06-06 00:10:48,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:10:48,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:10:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:10:48,107 INFO L87 Difference]: Start difference. First operand 1411 states and 4717 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 00:10:49,148 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2021-06-06 00:10:49,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:49,721 INFO L93 Difference]: Finished difference Result 1958 states and 6368 transitions. [2021-06-06 00:10:49,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:10:49,722 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 00:10:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:49,724 INFO L225 Difference]: With dead ends: 1958 [2021-06-06 00:10:49,724 INFO L226 Difference]: Without dead ends: 1943 [2021-06-06 00:10:49,724 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1721.7ms TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:10:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-06-06 00:10:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1455. [2021-06-06 00:10:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.343878954607978) internal successors, (4862), 1454 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4862 transitions. [2021-06-06 00:10:49,742 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4862 transitions. Word has length 26 [2021-06-06 00:10:49,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:49,742 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4862 transitions. [2021-06-06 00:10:49,743 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 00:10:49,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4862 transitions. [2021-06-06 00:10:49,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:49,744 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:49,745 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 00:10:49,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable996 [2021-06-06 00:10:49,945 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:49,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:49,945 INFO L82 PathProgramCache]: Analyzing trace with hash 950706158, now seen corresponding path program 14 times [2021-06-06 00:10:49,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:49,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426634798] [2021-06-06 00:10:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:50,259 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 00:10:50,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:50,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426634798] [2021-06-06 00:10:50,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426634798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:50,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534374362] [2021-06-06 00:10:50,259 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 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 00:10:50,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:10:50,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:50,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:10:50,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:50,632 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-06 00:10:50,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:50,716 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:10:50,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:50,719 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:50,848 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-06 00:10:50,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:50,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:50,869 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:10:50,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:50,871 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:50,997 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-06 00:10:50,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:51,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:51,020 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,140 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-06 00:10:51,140 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:51,159 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-06 00:10:51,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:51,161 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,288 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:10:51,288 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:51,309 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:10:51,309 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-06 00:10:51,312 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,427 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 00:10:51,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:51,442 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,443 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 41 [2021-06-06 00:10:51,445 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,563 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-06 00:10:51,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:51,583 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-06 00:10:51,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-06-06 00:10:51,584 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,698 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:10:51,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:10:51,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 41 [2021-06-06 00:10:51,715 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:51,858 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:10:51,858 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:51,872 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 00:10:51,873 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:445, output treesize:479 [2021-06-06 00:10:52,127 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-06-06 00:10:52,310 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-06 00:10:52,393 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 00:10:52,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534374362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:52,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:52,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:10:52,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772401153] [2021-06-06 00:10:52,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:10:52,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:52,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:10:52,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:10:52,394 INFO L87 Difference]: Start difference. First operand 1455 states and 4862 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 00:10:53,205 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36 [2021-06-06 00:10:53,665 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 44 [2021-06-06 00:10:54,159 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-06 00:10:54,571 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-06 00:10:54,777 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-06 00:10:55,039 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-06-06 00:10:55,354 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-06 00:10:55,691 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-06-06 00:10:55,926 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-06-06 00:10:56,368 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-06-06 00:10:56,582 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2021-06-06 00:10:56,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:10:56,665 INFO L93 Difference]: Finished difference Result 2081 states and 6658 transitions. [2021-06-06 00:10:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:10:56,665 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 00:10:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:10:56,668 INFO L225 Difference]: With dead ends: 2081 [2021-06-06 00:10:56,668 INFO L226 Difference]: Without dead ends: 2051 [2021-06-06 00:10:56,668 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4517.7ms TimeCoverageRelationStatistics Valid=271, Invalid=1621, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:10:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-06 00:10:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1451. [2021-06-06 00:10:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.3393103448275863) internal successors, (4842), 1450 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:10:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4842 transitions. [2021-06-06 00:10:56,689 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4842 transitions. Word has length 26 [2021-06-06 00:10:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:10:56,689 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4842 transitions. [2021-06-06 00:10:56,689 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 00:10:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4842 transitions. [2021-06-06 00:10:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:10:56,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:10:56,691 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 00:10:56,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1028,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:10:56,905 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:10:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:10:56,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1764992822, now seen corresponding path program 15 times [2021-06-06 00:10:56,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:10:56,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651360723] [2021-06-06 00:10:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:10:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:10:57,207 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 00:10:57,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:10:57,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651360723] [2021-06-06 00:10:57,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651360723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:57,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422075004] [2021-06-06 00:10:57,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:10:57,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:10:57,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:10:57,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:10:57,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:10:57,557 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 22 [2021-06-06 00:10:57,558 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:57,572 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 33 treesize of output 35 [2021-06-06 00:10:57,573 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,590 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:57,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:57,601 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,611 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:57,612 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,622 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:57,622 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,631 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,631 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 28 treesize of output 16 [2021-06-06 00:10:57,632 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:57,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 35 [2021-06-06 00:10:57,648 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,656 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,656 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 26 treesize of output 16 [2021-06-06 00:10:57,657 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,670 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:57,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:57,676 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,692 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:10:57,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:57,693 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,702 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:10:57,703 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,720 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:57,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:57,723 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,739 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:10:57,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:10:57,740 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,757 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:10:57,757 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,773 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:10:57,773 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 26 treesize of output 28 [2021-06-06 00:10:57,775 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,780 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:10:57,781 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:10:57,781 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:10:57,884 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-06 00:10:57,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:10:57,908 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 00:10:57,909 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:769, output treesize:357 [2021-06-06 00:10:58,098 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-06 00:10:58,255 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 00:10:58,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422075004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:10:58,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:10:58,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:10:58,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790268293] [2021-06-06 00:10:58,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:10:58,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:10:58,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:10:58,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:10:58,256 INFO L87 Difference]: Start difference. First operand 1451 states and 4842 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 00:10:58,831 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2021-06-06 00:10:59,289 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-06-06 00:10:59,560 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-06 00:10:59,874 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-06-06 00:11:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:00,838 INFO L93 Difference]: Finished difference Result 2000 states and 6458 transitions. [2021-06-06 00:11:00,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:11:00,839 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 00:11:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:00,841 INFO L225 Difference]: With dead ends: 2000 [2021-06-06 00:11:00,841 INFO L226 Difference]: Without dead ends: 1985 [2021-06-06 00:11:00,842 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2563.6ms TimeCoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:11:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-06-06 00:11:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1452. [2021-06-06 00:11:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.3418332184700206) internal successors, (4849), 1451 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4849 transitions. [2021-06-06 00:11:00,859 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4849 transitions. Word has length 26 [2021-06-06 00:11:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:00,859 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4849 transitions. [2021-06-06 00:11:00,859 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 00:11:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4849 transitions. [2021-06-06 00:11:00,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:00,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:00,861 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 00:11:01,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1054,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:01,061 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:01,062 INFO L82 PathProgramCache]: Analyzing trace with hash 505986546, now seen corresponding path program 16 times [2021-06-06 00:11:01,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:01,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260372209] [2021-06-06 00:11:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:01,416 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 00:11:01,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:01,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260372209] [2021-06-06 00:11:01,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260372209] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:01,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91814095] [2021-06-06 00:11:01,416 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 00:11:01,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:01,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:01,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:01,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,685 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:01,686 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,698 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 42 treesize of output 27 [2021-06-06 00:11:01,699 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,710 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,710 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 00:11:01,710 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,722 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,722 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 24 [2021-06-06 00:11:01,726 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,739 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:01,739 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 00:11:01,741 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,751 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,751 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 00:11:01,751 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,763 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 00:11:01,767 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,777 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:01,777 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,790 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 33 treesize of output 24 [2021-06-06 00:11:01,791 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,801 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,801 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 00:11:01,802 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,814 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:01,814 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 20 [2021-06-06 00:11:01,815 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,825 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,825 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 00:11:01,825 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,838 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:01,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:01,839 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,850 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:11:01,850 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,862 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,862 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 42 treesize of output 27 [2021-06-06 00:11:01,864 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:01,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:01,870 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:01,870 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 00:11:01,871 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:01,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:01,960 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:11:01,960 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-06 00:11:02,160 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 00:11:02,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91814095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:02,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:02,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:02,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288160961] [2021-06-06 00:11:02,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:02,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:02,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:02,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:02,161 INFO L87 Difference]: Start difference. First operand 1452 states and 4849 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 00:11:02,871 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2021-06-06 00:11:03,400 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2021-06-06 00:11:03,560 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-06-06 00:11:03,751 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-06-06 00:11:03,968 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-06-06 00:11:04,206 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2021-06-06 00:11:04,427 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-06 00:11:04,791 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-06 00:11:04,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:04,975 INFO L93 Difference]: Finished difference Result 2355 states and 7541 transitions. [2021-06-06 00:11:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:11:04,975 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 00:11:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:04,978 INFO L225 Difference]: With dead ends: 2355 [2021-06-06 00:11:04,978 INFO L226 Difference]: Without dead ends: 2325 [2021-06-06 00:11:04,978 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 2906.4ms TimeCoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:11:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2021-06-06 00:11:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1465. [2021-06-06 00:11:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions. [2021-06-06 00:11:04,999 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26 [2021-06-06 00:11:04,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:04,999 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions. [2021-06-06 00:11:04,999 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 00:11:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions. [2021-06-06 00:11:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:05,001 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:05,002 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 00:11:05,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1106,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:05,211 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:05,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1484642536, now seen corresponding path program 17 times [2021-06-06 00:11:05,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:05,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242536988] [2021-06-06 00:11:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:05,517 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 00:11:05,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:05,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242536988] [2021-06-06 00:11:05,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242536988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:05,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294940524] [2021-06-06 00:11:05,518 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 00:11:05,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:11:05,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:05,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:05,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:05,902 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-06 00:11:06,143 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_46], 2=[A, v_prenex_45]} [2021-06-06 00:11:06,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,147 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 00:11:06,148 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,245 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-06 00:11:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:06,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:06,250 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:06,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:06,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:06,294 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:06,295 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:06,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:06,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:06,300 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:06,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:06,335 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:11:06,335 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-06 00:11:06,386 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 00:11:06,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294940524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:06,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:06,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:11:06,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569614534] [2021-06-06 00:11:06,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:11:06,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:06,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:11:06,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:11:06,387 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 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 00:11:07,189 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2021-06-06 00:11:07,438 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-06-06 00:11:07,767 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-06 00:11:08,116 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-06 00:11:08,306 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-06-06 00:11:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:08,505 INFO L93 Difference]: Finished difference Result 2028 states and 6589 transitions. [2021-06-06 00:11:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:11:08,505 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 00:11:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:08,508 INFO L225 Difference]: With dead ends: 2028 [2021-06-06 00:11:08,508 INFO L226 Difference]: Without dead ends: 1998 [2021-06-06 00:11:08,508 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2340.9ms TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2021-06-06 00:11:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-06-06 00:11:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1468. [2021-06-06 00:11:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3503749147920927) internal successors, (4915), 1467 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4915 transitions. [2021-06-06 00:11:08,528 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4915 transitions. Word has length 26 [2021-06-06 00:11:08,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:08,528 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4915 transitions. [2021-06-06 00:11:08,528 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 00:11:08,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4915 transitions. [2021-06-06 00:11:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:08,530 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:08,530 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 00:11:08,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1131,59 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:08,744 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -808425550, now seen corresponding path program 18 times [2021-06-06 00:11:08,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:08,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849421821] [2021-06-06 00:11:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:09,068 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 00:11:09,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:09,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849421821] [2021-06-06 00:11:09,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849421821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:09,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104362069] [2021-06-06 00:11:09,068 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 00:11:09,092 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:11:09,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:09,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:11:09,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:09,378 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:11:09,522 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_54, v_prenex_64, v_prenex_58], 6=[A, v_prenex_60, v_prenex_62, v_prenex_56, v_prenex_66]} [2021-06-06 00:11:09,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:09,536 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:09,536 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 00:11:09,538 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:09,854 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 130 [2021-06-06 00:11:09,855 INFO L628 ElimStorePlain]: treesize reduction 272, result has 55.1 percent of original size [2021-06-06 00:11:09,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:09,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:09,867 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 00:11:09,868 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:09,983 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-06 00:11:09,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:09,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:09,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:09,995 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 00:11:09,996 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:10,105 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:11:10,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,117 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:11:10,117 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 25 treesize of output 19 [2021-06-06 00:11:10,119 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:10,229 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:11:10,230 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:10,244 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:10,344 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,357 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:11:10,357 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 22 [2021-06-06 00:11:10,358 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:10,467 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-06 00:11:10,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,478 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,478 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 26 [2021-06-06 00:11:10,482 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:10,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:10,581 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:11:10,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-06-06 00:11:10,582 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:10,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:10,681 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 00:11:10,681 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:621, output treesize:217 [2021-06-06 00:11:10,845 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-06 00:11:10,930 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 00:11:10,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104362069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:10,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:10,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:11:10,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732499353] [2021-06-06 00:11:10,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:10,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:10,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:10,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:10,931 INFO L87 Difference]: Start difference. First operand 1468 states and 4915 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 00:11:11,547 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-06-06 00:11:12,088 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-06 00:11:12,553 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-06 00:11:12,889 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-06 00:11:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:13,126 INFO L93 Difference]: Finished difference Result 1972 states and 6440 transitions. [2021-06-06 00:11:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:11:13,127 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 00:11:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:13,129 INFO L225 Difference]: With dead ends: 1972 [2021-06-06 00:11:13,129 INFO L226 Difference]: Without dead ends: 1957 [2021-06-06 00:11:13,129 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2495.6ms TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:11:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-06-06 00:11:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1465. [2021-06-06 00:11:13,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions. [2021-06-06 00:11:13,148 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26 [2021-06-06 00:11:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:13,148 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions. [2021-06-06 00:11:13,148 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 00:11:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions. [2021-06-06 00:11:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:13,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:13,150 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 00:11:13,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1141,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:13,361 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:13,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2091148486, now seen corresponding path program 19 times [2021-06-06 00:11:13,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:13,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215453984] [2021-06-06 00:11:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:13,767 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 00:11:13,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:13,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215453984] [2021-06-06 00:11:13,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215453984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:13,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979466068] [2021-06-06 00:11:13,767 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 00:11:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:13,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:13,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:14,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:14,152 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:14,159 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:14,166 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,172 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:11:14,173 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:14,180 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:14,188 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,195 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 31 treesize of output 19 [2021-06-06 00:11:14,196 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,202 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 33 treesize of output 19 [2021-06-06 00:11:14,203 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,209 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:14,210 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:14,217 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:14,223 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:11:14,230 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:14,237 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,243 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 00:11:14,244 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:14,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:14,248 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 33 treesize of output 19 [2021-06-06 00:11:14,248 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:14,322 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:11:14,323 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 00:11:14,323 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:11:14,369 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 00:11:14,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979466068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:14,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:14,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:11:14,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695577607] [2021-06-06 00:11:14,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:14,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:14,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:14,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:14,370 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 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 00:11:15,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:15,190 INFO L93 Difference]: Finished difference Result 1916 states and 6261 transitions. [2021-06-06 00:11:15,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:11:15,190 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 00:11:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:15,193 INFO L225 Difference]: With dead ends: 1916 [2021-06-06 00:11:15,193 INFO L226 Difference]: Without dead ends: 1895 [2021-06-06 00:11:15,193 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1074.4ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:11:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2021-06-06 00:11:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1506. [2021-06-06 00:11:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.345514950166113) internal successors, (5035), 1505 states have internal predecessors, (5035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5035 transitions. [2021-06-06 00:11:15,210 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5035 transitions. Word has length 26 [2021-06-06 00:11:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:15,210 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5035 transitions. [2021-06-06 00:11:15,210 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 00:11:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5035 transitions. [2021-06-06 00:11:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:15,212 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:15,212 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 00:11:15,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1166 [2021-06-06 00:11:15,413 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash 2036009718, now seen corresponding path program 20 times [2021-06-06 00:11:15,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:15,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146577513] [2021-06-06 00:11:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:15,802 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 00:11:15,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:15,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146577513] [2021-06-06 00:11:15,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146577513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:15,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773137963] [2021-06-06 00:11:15,803 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 00:11:15,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:15,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:15,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:15,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:16,444 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-06 00:11:16,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36 [2021-06-06 00:11:16,450 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:16,469 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:16,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-06 00:11:16,494 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:16,937 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-06-06 00:11:16,938 INFO L628 ElimStorePlain]: treesize reduction 17, result has 95.3 percent of original size [2021-06-06 00:11:16,957 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:16,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2021-06-06 00:11:16,964 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:16,986 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-06 00:11:16,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2021-06-06 00:11:16,989 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,119 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:11:17,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:17,144 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-06 00:11:17,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32 [2021-06-06 00:11:17,146 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,167 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-06 00:11:17,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2021-06-06 00:11:17,171 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,302 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-06 00:11:17,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:17,325 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-06 00:11:17,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-06 00:11:17,326 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,350 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-06 00:11:17,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39 [2021-06-06 00:11:17,351 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:17,480 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-06 00:11:17,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:17,521 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 00:11:17,521 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:365, output treesize:746 [2021-06-06 00:11:17,936 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-06-06 00:11:18,203 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-06-06 00:11:18,322 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 00:11:18,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773137963] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:18,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:18,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-06 00:11:18,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632565762] [2021-06-06 00:11:18,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:11:18,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:18,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:11:18,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:11:18,323 INFO L87 Difference]: Start difference. First operand 1506 states and 5035 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 00:11:18,487 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 21 [2021-06-06 00:11:18,632 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2021-06-06 00:11:18,979 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 47 [2021-06-06 00:11:19,276 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 51 [2021-06-06 00:11:19,625 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 50 [2021-06-06 00:11:19,929 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 41 [2021-06-06 00:11:20,146 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-06 00:11:20,703 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-06-06 00:11:20,831 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2021-06-06 00:11:21,217 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 53 [2021-06-06 00:11:21,495 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-06-06 00:11:21,969 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 61 [2021-06-06 00:11:22,423 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-06 00:11:22,899 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2021-06-06 00:11:23,278 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-06 00:11:23,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:23,336 INFO L93 Difference]: Finished difference Result 2133 states and 6814 transitions. [2021-06-06 00:11:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:11:23,336 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 00:11:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:23,339 INFO L225 Difference]: With dead ends: 2133 [2021-06-06 00:11:23,339 INFO L226 Difference]: Without dead ends: 2108 [2021-06-06 00:11:23,339 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 5732.9ms TimeCoverageRelationStatistics Valid=320, Invalid=1486, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:11:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-06-06 00:11:23,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1529. [2021-06-06 00:11:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 3.352094240837696) internal successors, (5122), 1528 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5122 transitions. [2021-06-06 00:11:23,358 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5122 transitions. Word has length 26 [2021-06-06 00:11:23,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:23,358 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5122 transitions. [2021-06-06 00:11:23,358 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 00:11:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5122 transitions. [2021-06-06 00:11:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:23,360 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:23,360 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 00:11:23,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1198 [2021-06-06 00:11:23,576 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:23,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2016041692, now seen corresponding path program 21 times [2021-06-06 00:11:23,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:23,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521170382] [2021-06-06 00:11:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:23,841 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2021-06-06 00:11:24,013 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 00:11:24,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:24,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521170382] [2021-06-06 00:11:24,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521170382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:24,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148067687] [2021-06-06 00:11:24,013 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 00:11:24,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:11:24,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:24,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:11:24,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:24,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,314 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,314 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 36 treesize of output 22 [2021-06-06 00:11:24,315 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,323 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,323 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 31 treesize of output 19 [2021-06-06 00:11:24,323 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,333 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,334 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 16 treesize of output 18 [2021-06-06 00:11:24,337 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,347 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 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 28 treesize of output 24 [2021-06-06 00:11:24,350 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,358 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,358 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 00:11:24,359 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,366 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,366 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 00:11:24,367 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,377 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:24,377 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 00:11:24,379 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,387 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,387 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 00:11:24,388 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,396 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:24,397 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,407 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,407 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 26 treesize of output 24 [2021-06-06 00:11:24,408 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,418 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,419 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 00:11:24,421 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,428 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:24,429 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,439 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:24,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:24,440 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,450 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:24,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:24,451 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,460 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:24,460 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 00:11:24,461 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:24,474 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:24,476 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:24,552 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:24,556 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 00:11:24,556 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-06 00:11:24,743 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 00:11:24,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148067687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:24,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:24,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:11:24,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933451696] [2021-06-06 00:11:24,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:24,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:24,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:24,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:24,744 INFO L87 Difference]: Start difference. First operand 1529 states and 5122 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 00:11:26,102 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-06 00:11:26,246 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2021-06-06 00:11:26,518 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2021-06-06 00:11:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:26,569 INFO L93 Difference]: Finished difference Result 2011 states and 6582 transitions. [2021-06-06 00:11:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:11:26,569 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 00:11:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:26,572 INFO L225 Difference]: With dead ends: 2011 [2021-06-06 00:11:26,572 INFO L226 Difference]: Without dead ends: 1982 [2021-06-06 00:11:26,572 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2101.7ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:11:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2021-06-06 00:11:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1532. [2021-06-06 00:11:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3527106466361856) internal successors, (5133), 1531 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5133 transitions. [2021-06-06 00:11:26,601 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5133 transitions. Word has length 26 [2021-06-06 00:11:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:26,601 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5133 transitions. [2021-06-06 00:11:26,601 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 00:11:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5133 transitions. [2021-06-06 00:11:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:26,603 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:26,604 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 00:11:26,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1278 [2021-06-06 00:11:26,809 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1960184130, now seen corresponding path program 22 times [2021-06-06 00:11:26,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:26,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983194828] [2021-06-06 00:11:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:27,202 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 00:11:27,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:27,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983194828] [2021-06-06 00:11:27,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983194828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:27,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433863346] [2021-06-06 00:11:27,202 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) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:27,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:27,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:27,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:27,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:27,529 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-06-06 00:11:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,581 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 00:11:27,582 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:27,588 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,696 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-06-06 00:11:27,697 INFO L628 ElimStorePlain]: treesize reduction 91, result has 58.6 percent of original size [2021-06-06 00:11:27,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,700 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 00:11:27,701 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,740 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:27,741 INFO L518 ElimStorePlain]: Eliminatee v_prenex_87 vanished before elimination [2021-06-06 00:11:27,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,745 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:27,746 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:27,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:27,749 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:11:27,750 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:27,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:27,785 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:11:27,785 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:272, output treesize:51 [2021-06-06 00:11:27,837 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 00:11:27,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433863346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:27,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:27,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:11:27,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684509253] [2021-06-06 00:11:27,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:11:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:11:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:11:27,838 INFO L87 Difference]: Start difference. First operand 1532 states and 5133 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 00:11:28,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:28,145 INFO L93 Difference]: Finished difference Result 1607 states and 5324 transitions. [2021-06-06 00:11:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 00:11:28,145 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 00:11:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:28,147 INFO L225 Difference]: With dead ends: 1607 [2021-06-06 00:11:28,147 INFO L226 Difference]: Without dead ends: 1592 [2021-06-06 00:11:28,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 724.2ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:28,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-06 00:11:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1538. [2021-06-06 00:11:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 3.3545868575146387) internal successors, (5156), 1537 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 5156 transitions. [2021-06-06 00:11:28,164 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 5156 transitions. Word has length 26 [2021-06-06 00:11:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:28,165 INFO L482 AbstractCegarLoop]: Abstraction has 1538 states and 5156 transitions. [2021-06-06 00:11:28,165 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 00:11:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 5156 transitions. [2021-06-06 00:11:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:28,166 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:28,167 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 00:11:28,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:28,381 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash -389358530, now seen corresponding path program 23 times [2021-06-06 00:11:28,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:28,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669388823] [2021-06-06 00:11:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:28,667 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 00:11:28,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:28,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669388823] [2021-06-06 00:11:28,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669388823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:28,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976152829] [2021-06-06 00:11:28,667 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) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:28,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:11:28,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:28,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:11:28,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:29,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,086 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:29,091 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,109 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:29,109 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 21 treesize of output 21 [2021-06-06 00:11:29,110 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,256 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-06 00:11:29,257 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,278 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:29,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:29,280 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,298 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:29,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:29,301 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,432 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:11:29,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,458 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,458 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 00:11:29,461 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,479 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:29,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:29,480 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,726 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-06-06 00:11:29,727 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size [2021-06-06 00:11:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,741 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:29,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:29,747 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:29,761 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:29,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:29,762 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:29,982 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-06-06 00:11:29,982 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.5 percent of original size [2021-06-06 00:11:29,998 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 00:11:29,998 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:259 [2021-06-06 00:11:30,170 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-06 00:11:30,260 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 00:11:30,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976152829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:30,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:30,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:11:30,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539006676] [2021-06-06 00:11:30,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:11:30,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:30,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:11:30,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:11:30,261 INFO L87 Difference]: Start difference. First operand 1538 states and 5156 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 00:11:31,064 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-06-06 00:11:31,757 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-06-06 00:11:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:31,805 INFO L93 Difference]: Finished difference Result 2227 states and 7222 transitions. [2021-06-06 00:11:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:11:31,806 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 00:11:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:31,808 INFO L225 Difference]: With dead ends: 2227 [2021-06-06 00:11:31,808 INFO L226 Difference]: Without dead ends: 2177 [2021-06-06 00:11:31,808 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1797.5ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:11:31,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2021-06-06 00:11:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1545. [2021-06-06 00:11:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 3.3588082901554404) internal successors, (5186), 1544 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5186 transitions. [2021-06-06 00:11:31,827 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5186 transitions. Word has length 26 [2021-06-06 00:11:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:31,827 INFO L482 AbstractCegarLoop]: Abstraction has 1545 states and 5186 transitions. [2021-06-06 00:11:31,827 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 00:11:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5186 transitions. [2021-06-06 00:11:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:31,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:31,829 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 00:11:32,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1330 [2021-06-06 00:11:32,029 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:32,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:32,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1800748254, now seen corresponding path program 24 times [2021-06-06 00:11:32,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:32,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355894871] [2021-06-06 00:11:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:32,450 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 00:11:32,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:32,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355894871] [2021-06-06 00:11:32,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355894871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:32,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145498067] [2021-06-06 00:11:32,450 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 00:11:32,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:11:32,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:32,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:32,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:32,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,681 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:32,682 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,689 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,689 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 00:11:32,690 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,697 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,697 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 00:11:32,698 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:32,710 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,720 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,720 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 16 treesize of output 18 [2021-06-06 00:11:32,723 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,733 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 33 treesize of output 27 [2021-06-06 00:11:32,734 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,741 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,741 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 00:11:32,742 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,752 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 00:11:32,755 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,765 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 00:11:32,766 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,774 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,774 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 36 treesize of output 22 [2021-06-06 00:11:32,774 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,782 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,782 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 00:11:32,783 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,790 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,790 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 00:11:32,791 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,801 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:32,801 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 00:11:32,802 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,811 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:32,811 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 00:11:32,812 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,822 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:32,822 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 00:11:32,823 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:32,828 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:32,828 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 00:11:32,829 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:32,893 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:32,895 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:11:32,895 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:11:33,065 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 00:11:33,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145498067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:33,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:33,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:33,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950085869] [2021-06-06 00:11:33,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:33,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:33,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:33,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:33,066 INFO L87 Difference]: Start difference. First operand 1545 states and 5186 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 00:11:33,688 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2021-06-06 00:11:34,235 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-06-06 00:11:34,493 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-06 00:11:34,733 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-06 00:11:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:34,798 INFO L93 Difference]: Finished difference Result 2071 states and 6812 transitions. [2021-06-06 00:11:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:11:34,801 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 00:11:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:34,803 INFO L225 Difference]: With dead ends: 2071 [2021-06-06 00:11:34,803 INFO L226 Difference]: Without dead ends: 2052 [2021-06-06 00:11:34,804 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2046.5ms TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:11:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-06-06 00:11:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1557. [2021-06-06 00:11:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.3618251928020566) internal successors, (5231), 1556 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 5231 transitions. [2021-06-06 00:11:34,825 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 5231 transitions. Word has length 26 [2021-06-06 00:11:34,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:34,825 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 5231 transitions. [2021-06-06 00:11:34,825 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 00:11:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 5231 transitions. [2021-06-06 00:11:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:34,827 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:34,827 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 00:11:35,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1386 [2021-06-06 00:11:35,028 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:35,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:35,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1506727430, now seen corresponding path program 25 times [2021-06-06 00:11:35,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:35,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646077844] [2021-06-06 00:11:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:35,453 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 00:11:35,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:35,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646077844] [2021-06-06 00:11:35,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646077844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:35,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655988490] [2021-06-06 00:11:35,453 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 00:11:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:35,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:11:35,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:35,816 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-06 00:11:35,914 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_98], 3=[A, v_prenex_100], 6=[v_prenex_99]} [2021-06-06 00:11:35,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:35,926 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 00:11:35,927 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:35,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:35,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:35,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:35,939 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,075 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:11:36,075 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,089 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:11:36,089 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 23 treesize of output 19 [2021-06-06 00:11:36,091 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,101 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,101 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 26 [2021-06-06 00:11:36,102 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,255 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:11:36,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,270 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:11:36,270 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 00:11:36,272 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,323 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,323 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 18 treesize of output 20 [2021-06-06 00:11:36,326 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,442 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-06 00:11:36,443 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:36,456 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:11:36,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 22 [2021-06-06 00:11:36,458 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:36,476 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,476 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 26 [2021-06-06 00:11:36,479 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:36,582 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-06 00:11:36,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:36,604 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:11:36,605 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:375, output treesize:228 [2021-06-06 00:11:36,772 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-06 00:11:36,895 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 00:11:36,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655988490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:36,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:36,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:11:36,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513469946] [2021-06-06 00:11:36,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:36,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:36,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:36,895 INFO L87 Difference]: Start difference. First operand 1557 states and 5231 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 00:11:37,203 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-06 00:11:37,515 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-06-06 00:11:37,783 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-06 00:11:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:38,306 INFO L93 Difference]: Finished difference Result 2052 states and 6751 transitions. [2021-06-06 00:11:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:11:38,306 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 00:11:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:38,309 INFO L225 Difference]: With dead ends: 2052 [2021-06-06 00:11:38,309 INFO L226 Difference]: Without dead ends: 2027 [2021-06-06 00:11:38,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1840.4ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:11:38,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-06-06 00:11:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1563. [2021-06-06 00:11:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.360435339308579) internal successors, (5249), 1562 states have internal predecessors, (5249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 5249 transitions. [2021-06-06 00:11:38,329 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 5249 transitions. Word has length 26 [2021-06-06 00:11:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:38,329 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 5249 transitions. [2021-06-06 00:11:38,329 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 00:11:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 5249 transitions. [2021-06-06 00:11:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:38,331 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:38,331 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 00:11:38,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1403 [2021-06-06 00:11:38,531 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:38,535 INFO L82 PathProgramCache]: Analyzing trace with hash -132958662, now seen corresponding path program 42 times [2021-06-06 00:11:38,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:38,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281234283] [2021-06-06 00:11:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:38,956 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 00:11:38,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:38,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281234283] [2021-06-06 00:11:38,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281234283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:38,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787928218] [2021-06-06 00:11:38,957 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 00:11:38,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:11:38,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:38,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-06 00:11:38,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:39,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,252 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 00:11:39,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,260 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 00:11:39,260 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,267 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:11:39,267 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:39,275 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,282 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 32 treesize of output 16 [2021-06-06 00:11:39,283 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,290 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 43 treesize of output 13 [2021-06-06 00:11:39,291 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,298 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 00:11:39,299 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,306 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-06 00:11:39,307 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,314 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 00:11:39,314 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,321 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 00:11:39,321 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:39,329 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,336 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 41 treesize of output 19 [2021-06-06 00:11:39,337 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,344 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 00:11:39,344 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,351 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 00:11:39,352 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,358 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-06 00:11:39,359 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:39,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:39,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:39,363 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:39,396 INFO L628 ElimStorePlain]: treesize reduction 21, result has 65.0 percent of original size [2021-06-06 00:11:39,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-06 00:11:39,397 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:809, output treesize:39 [2021-06-06 00:11:39,455 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 00:11:39,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787928218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:39,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:39,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:11:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174096880] [2021-06-06 00:11:39,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:11:39,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:39,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:11:39,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:11:39,456 INFO L87 Difference]: Start difference. First operand 1563 states and 5249 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 00:11:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:40,369 INFO L93 Difference]: Finished difference Result 2040 states and 6673 transitions. [2021-06-06 00:11:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:11:40,370 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 00:11:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:40,372 INFO L225 Difference]: With dead ends: 2040 [2021-06-06 00:11:40,372 INFO L226 Difference]: Without dead ends: 2014 [2021-06-06 00:11:40,373 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1252.9ms TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:11:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-06-06 00:11:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1579. [2021-06-06 00:11:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions. [2021-06-06 00:11:40,391 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26 [2021-06-06 00:11:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:40,391 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions. [2021-06-06 00:11:40,391 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 00:11:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions. [2021-06-06 00:11:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:40,393 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:40,393 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 00:11:40,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1436,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:40,594 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:40,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:40,594 INFO L82 PathProgramCache]: Analyzing trace with hash 934915902, now seen corresponding path program 43 times [2021-06-06 00:11:40,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:40,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309223279] [2021-06-06 00:11:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:41,004 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 00:11:41,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:41,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309223279] [2021-06-06 00:11:41,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309223279] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:41,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565773125] [2021-06-06 00:11:41,004 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 00:11:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:41,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:41,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:41,340 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_103], 5=[v_prenex_101, v_prenex_105]} [2021-06-06 00:11:41,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:41,349 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:41,354 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,432 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size [2021-06-06 00:11:41,432 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination [2021-06-06 00:11:41,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:41,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,436 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 00:11:41,437 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,463 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:41,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:41,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:41,466 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:41,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:41,491 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 00:11:41,491 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:33 [2021-06-06 00:11:41,533 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 00:11:41,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565773125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:41,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:41,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:11:41,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899451672] [2021-06-06 00:11:41,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:11:41,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:41,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:11:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:11:41,533 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 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 00:11:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:43,920 INFO L93 Difference]: Finished difference Result 2239 states and 7310 transitions. [2021-06-06 00:11:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:11:43,920 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 00:11:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:43,922 INFO L225 Difference]: With dead ends: 2239 [2021-06-06 00:11:43,922 INFO L226 Difference]: Without dead ends: 2224 [2021-06-06 00:11:43,923 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2583.1ms TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:11:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-06-06 00:11:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1579. [2021-06-06 00:11:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions. [2021-06-06 00:11:43,942 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26 [2021-06-06 00:11:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:43,942 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions. [2021-06-06 00:11:43,942 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 00:11:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions. [2021-06-06 00:11:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:43,944 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:43,944 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 00:11:44,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1455 [2021-06-06 00:11:44,144 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:44,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash 346540478, now seen corresponding path program 26 times [2021-06-06 00:11:44,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:44,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252892539] [2021-06-06 00:11:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:44,523 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 00:11:44,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:44,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252892539] [2021-06-06 00:11:44,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252892539] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:44,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644266605] [2021-06-06 00:11:44,524 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 00:11:44,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:44,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:44,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:44,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:44,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,769 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:44,770 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,777 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:44,778 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,785 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,785 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 00:11:44,786 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,795 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 33 treesize of output 27 [2021-06-06 00:11:44,797 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,807 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,807 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 16 treesize of output 18 [2021-06-06 00:11:44,810 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:44,820 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,828 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,828 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 00:11:44,828 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,838 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,838 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 00:11:44,841 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,851 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 00:11:44,852 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,860 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-06 00:11:44,860 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,868 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,868 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 00:11:44,869 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,876 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,876 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 00:11:44,877 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,887 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:44,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:44,888 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,898 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:44,898 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 00:11:44,899 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,909 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:11:44,909 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 00:11:44,910 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:44,926 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:11:44,926 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 00:11:44,926 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:44,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:44,993 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:11:44,993 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:11:45,165 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 00:11:45,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644266605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:45,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:45,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:11:45,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356307303] [2021-06-06 00:11:45,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:45,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:45,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:45,166 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 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 00:11:46,668 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-06-06 00:11:46,845 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2021-06-06 00:11:47,134 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-06 00:11:47,343 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-06 00:11:47,600 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-06-06 00:11:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:47,660 INFO L93 Difference]: Finished difference Result 2206 states and 7151 transitions. [2021-06-06 00:11:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:11:47,660 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 00:11:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:47,663 INFO L225 Difference]: With dead ends: 2206 [2021-06-06 00:11:47,663 INFO L226 Difference]: Without dead ends: 2187 [2021-06-06 00:11:47,664 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2567.4ms TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:11:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-06-06 00:11:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1585. [2021-06-06 00:11:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:47,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions. [2021-06-06 00:11:47,686 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26 [2021-06-06 00:11:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:47,686 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions. [2021-06-06 00:11:47,686 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 00:11:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions. [2021-06-06 00:11:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:47,688 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:47,688 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 00:11:47,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1469,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:11:47,889 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:47,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:47,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1896922042, now seen corresponding path program 44 times [2021-06-06 00:11:47,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:47,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767135408] [2021-06-06 00:11:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:48,386 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 00:11:48,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:48,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767135408] [2021-06-06 00:11:48,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767135408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:48,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201971333] [2021-06-06 00:11:48,387 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 00:11:48,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:11:48,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:48,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:11:48,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:48,767 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-06 00:11:49,075 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_118, A], 5=[v_prenex_120, v_prenex_116]} [2021-06-06 00:11:49,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,096 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:49,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:49,098 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,113 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:49,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:11:49,117 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,271 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:11:49,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:49,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,295 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:49,295 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 26 treesize of output 28 [2021-06-06 00:11:49,296 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:49,315 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:49,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:11:49,318 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,465 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:11:49,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:49,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,486 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:11:49,486 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-06 00:11:49,487 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:49,503 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-06 00:11:49,508 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,652 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:11:49,653 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:49,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,674 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:49,674 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:49,676 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:49,692 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:11:49,692 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-06 00:11:49,694 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:49,809 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-06 00:11:49,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:49,820 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 00:11:49,820 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:393, output treesize:161 [2021-06-06 00:11:49,958 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 00:11:49,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201971333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:49,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:49,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:11:49,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132305325] [2021-06-06 00:11:49,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 00:11:49,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:49,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 00:11:49,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:11:49,959 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) 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 00:11:50,585 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2021-06-06 00:11:52,240 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2021-06-06 00:11:52,672 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-06-06 00:11:52,848 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-06-06 00:11:53,404 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-06-06 00:11:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:53,763 INFO L93 Difference]: Finished difference Result 2573 states and 8159 transitions. [2021-06-06 00:11:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:11:53,763 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) 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 00:11:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:53,767 INFO L225 Difference]: With dead ends: 2573 [2021-06-06 00:11:53,767 INFO L226 Difference]: Without dead ends: 2529 [2021-06-06 00:11:53,767 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 4103.7ms TimeCoverageRelationStatistics Valid=671, Invalid=3361, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:11:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2021-06-06 00:11:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 1585. [2021-06-06 00:11:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions. [2021-06-06 00:11:53,798 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26 [2021-06-06 00:11:53,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:53,798 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions. [2021-06-06 00:11:53,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) 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 00:11:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions. [2021-06-06 00:11:53,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:53,800 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:53,800 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 00:11:54,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1486 [2021-06-06 00:11:54,000 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:54,001 INFO L82 PathProgramCache]: Analyzing trace with hash 920603198, now seen corresponding path program 45 times [2021-06-06 00:11:54,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:54,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125680681] [2021-06-06 00:11:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:54,369 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 00:11:54,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:54,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125680681] [2021-06-06 00:11:54,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125680681] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:54,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889257458] [2021-06-06 00:11:54,369 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 00:11:54,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:11:54,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:54,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:11:54,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,929 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:11:54,929 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 43 treesize of output 33 [2021-06-06 00:11:54,933 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,960 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:11:54,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 41 [2021-06-06 00:11:54,968 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:54,995 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:11:54,995 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 30 treesize of output 26 [2021-06-06 00:11:54,997 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,026 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:11:55,026 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 25 [2021-06-06 00:11:55,027 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,045 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,045 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 00:11:55,046 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,062 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,063 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 41 treesize of output 1 [2021-06-06 00:11:55,063 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,079 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,079 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:11:55,080 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,096 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,096 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 43 treesize of output 1 [2021-06-06 00:11:55,096 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,121 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:11:55,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:55,123 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,146 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:11:55,146 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 25 [2021-06-06 00:11:55,148 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,164 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,164 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 45 treesize of output 1 [2021-06-06 00:11:55,165 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,181 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,181 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 41 treesize of output 1 [2021-06-06 00:11:55,182 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,199 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,199 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 00:11:55,199 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,223 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:11:55,223 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 36 treesize of output 25 [2021-06-06 00:11:55,224 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,240 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,240 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 43 treesize of output 1 [2021-06-06 00:11:55,241 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:55,251 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:11:55,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:55,251 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:55,387 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-06-06 00:11:55,387 INFO L628 ElimStorePlain]: treesize reduction 79, result has 66.8 percent of original size [2021-06-06 00:11:55,389 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 00:11:55,389 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:180 [2021-06-06 00:11:55,527 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 00:11:55,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889257458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:55,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:55,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-06-06 00:11:55,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632482735] [2021-06-06 00:11:55,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 00:11:55,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:55,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 00:11:55,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:11:55,528 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 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 00:11:56,704 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-06 00:11:57,134 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-06 00:11:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:11:58,565 INFO L93 Difference]: Finished difference Result 3102 states and 9804 transitions. [2021-06-06 00:11:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:11:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 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 00:11:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:11:58,570 INFO L225 Difference]: With dead ends: 3102 [2021-06-06 00:11:58,570 INFO L226 Difference]: Without dead ends: 3072 [2021-06-06 00:11:58,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 2905.1ms TimeCoverageRelationStatistics Valid=533, Invalid=3007, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:11:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-06-06 00:11:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1645. [2021-06-06 00:11:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.3619221411192215) internal successors, (5527), 1644 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:11:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 5527 transitions. [2021-06-06 00:11:58,596 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 5527 transitions. Word has length 26 [2021-06-06 00:11:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:11:58,597 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 5527 transitions. [2021-06-06 00:11:58,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 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 00:11:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 5527 transitions. [2021-06-06 00:11:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:11:58,599 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:11:58,599 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 00:11:58,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1554 [2021-06-06 00:11:58,800 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:11:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:11:58,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2122915566, now seen corresponding path program 46 times [2021-06-06 00:11:58,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:11:58,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617382387] [2021-06-06 00:11:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:11:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:11:59,222 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 00:11:59,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:11:59,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617382387] [2021-06-06 00:11:59,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617382387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:59,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895543679] [2021-06-06 00:11:59,222 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 00:11:59,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:11:59,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:11:59,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:11:59,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:11:59,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,730 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 00:11:59,731 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,738 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 00:11:59,739 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,746 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 00:11:59,747 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,762 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 00:11:59,763 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,771 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 00:11:59,772 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:11:59,780 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,787 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 00:11:59,788 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,795 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 00:11:59,795 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,802 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 00:11:59,803 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,810 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 00:11:59,811 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,825 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 00:11:59,826 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,833 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 00:11:59,833 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,840 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 00:11:59,841 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,847 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 00:11:59,848 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:11:59,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:11:59,853 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 00:11:59,854 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:11:59,882 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-06 00:11:59,883 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 00:11:59,883 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:11:59,905 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 00:11:59,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895543679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:11:59,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:11:59,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2021-06-06 00:11:59,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594051029] [2021-06-06 00:11:59,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:11:59,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:11:59,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:11:59,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:11:59,906 INFO L87 Difference]: Start difference. First operand 1645 states and 5527 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 00:12:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:01,985 INFO L93 Difference]: Finished difference Result 3253 states and 10418 transitions. [2021-06-06 00:12:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-06 00:12:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 26 [2021-06-06 00:12:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:01,989 INFO L225 Difference]: With dead ends: 3253 [2021-06-06 00:12:01,989 INFO L226 Difference]: Without dead ends: 3217 [2021-06-06 00:12:01,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2009.5ms TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:12:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-06 00:12:02,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1763. [2021-06-06 00:12:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 3.388195232690125) internal successors, (5970), 1762 states have internal predecessors, (5970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5970 transitions. [2021-06-06 00:12:02,016 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5970 transitions. Word has length 26 [2021-06-06 00:12:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:02,016 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 5970 transitions. [2021-06-06 00:12:02,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 00:12:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5970 transitions. [2021-06-06 00:12:02,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:02,018 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:02,018 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 00:12:02,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1660 [2021-06-06 00:12:02,218 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash -338403078, now seen corresponding path program 47 times [2021-06-06 00:12:02,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:02,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444487240] [2021-06-06 00:12:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:02,617 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 00:12:02,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:02,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444487240] [2021-06-06 00:12:02,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444487240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:02,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516741559] [2021-06-06 00:12:02,618 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 00:12:02,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:12:02,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:02,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:12:02,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,086 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:12:03,086 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 00:12:03,087 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,110 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:12:03,110 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 28 [2021-06-06 00:12:03,111 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,137 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:03,137 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 00:12:03,140 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,161 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:12:03,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:03,163 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,178 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:03,178 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 00:12:03,178 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,207 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:12:03,208 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 39 treesize of output 25 [2021-06-06 00:12:03,209 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,232 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:12:03,232 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 00:12:03,235 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,256 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:12:03,256 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 26 [2021-06-06 00:12:03,258 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:03,279 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 00:12:03,284 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,307 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:12:03,308 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 00:12:03,312 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,333 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:12:03,333 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 00:12:03,334 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,347 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:03,348 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 00:12:03,348 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,362 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:03,362 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:12:03,363 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,376 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:03,376 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 00:12:03,377 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,390 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:03,390 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 00:12:03,391 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:03,399 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:12:03,399 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 00:12:03,400 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:03,500 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2021-06-06 00:12:03,500 INFO L628 ElimStorePlain]: treesize reduction 133, result has 44.8 percent of original size [2021-06-06 00:12:03,502 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 00:12:03,502 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:90 [2021-06-06 00:12:03,577 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 00:12:03,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516741559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:03,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:03,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2021-06-06 00:12:03,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120718943] [2021-06-06 00:12:03,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:03,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:03,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:03,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:03,578 INFO L87 Difference]: Start difference. First operand 1763 states and 5970 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 00:12:05,654 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-06 00:12:06,137 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-06-06 00:12:06,343 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2021-06-06 00:12:06,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:06,558 INFO L93 Difference]: Finished difference Result 3738 states and 11851 transitions. [2021-06-06 00:12:06,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:12:06,558 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 26 [2021-06-06 00:12:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:06,563 INFO L225 Difference]: With dead ends: 3738 [2021-06-06 00:12:06,563 INFO L226 Difference]: Without dead ends: 3681 [2021-06-06 00:12:06,563 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 2934.0ms TimeCoverageRelationStatistics Valid=639, Invalid=2553, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:12:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-06-06 00:12:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1801. [2021-06-06 00:12:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 3.397777777777778) internal successors, (6116), 1800 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 6116 transitions. [2021-06-06 00:12:06,592 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 6116 transitions. Word has length 26 [2021-06-06 00:12:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:06,592 INFO L482 AbstractCegarLoop]: Abstraction has 1801 states and 6116 transitions. [2021-06-06 00:12:06,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 00:12:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 6116 transitions. [2021-06-06 00:12:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:06,594 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:06,594 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 00:12:06,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1766,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:06,794 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:06,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1512099618, now seen corresponding path program 27 times [2021-06-06 00:12:06,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:06,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247433021] [2021-06-06 00:12:06,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:07,343 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 00:12:07,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:07,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247433021] [2021-06-06 00:12:07,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247433021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:07,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611434440] [2021-06-06 00:12:07,343 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 00:12:07,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:12:07,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:07,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:12:07,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:07,785 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-06 00:12:08,009 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:12:08,148 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:08,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:08,150 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,274 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-06 00:12:08,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,289 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,289 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 33 treesize of output 35 [2021-06-06 00:12:08,292 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,416 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-06 00:12:08,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,435 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:08,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:08,436 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,565 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:12:08,565 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,584 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:08,584 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 21 treesize of output 25 [2021-06-06 00:12:08,587 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,712 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-06 00:12:08,713 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,730 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:08,734 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,851 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:12:08,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:08,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 35 [2021-06-06 00:12:08,868 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:08,990 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:12:08,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:09,009 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:09,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:09,013 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:09,130 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:12:09,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:09,146 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:09,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:09,147 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:09,270 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:12:09,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:09,282 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 00:12:09,283 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:365, output treesize:357 [2021-06-06 00:12:09,476 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-06-06 00:12:09,588 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 00:12:09,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611434440] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:09,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:09,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:12:09,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093644610] [2021-06-06 00:12:09,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:09,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:09,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:09,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:09,589 INFO L87 Difference]: Start difference. First operand 1801 states and 6116 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 00:12:10,435 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-06-06 00:12:10,625 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-06-06 00:12:11,093 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-06 00:12:11,311 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:12:11,539 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-06-06 00:12:11,994 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2021-06-06 00:12:12,364 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-06-06 00:12:12,965 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 67 [2021-06-06 00:12:13,392 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2021-06-06 00:12:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:13,571 INFO L93 Difference]: Finished difference Result 2391 states and 7895 transitions. [2021-06-06 00:12:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:12:13,571 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 00:12:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:13,574 INFO L225 Difference]: With dead ends: 2391 [2021-06-06 00:12:13,574 INFO L226 Difference]: Without dead ends: 2361 [2021-06-06 00:12:13,575 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 4380.0ms TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:12:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-06-06 00:12:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1809. [2021-06-06 00:12:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 3.396017699115044) internal successors, (6140), 1808 states have internal predecessors, (6140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:13,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 6140 transitions. [2021-06-06 00:12:13,603 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 6140 transitions. Word has length 26 [2021-06-06 00:12:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:13,603 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 6140 transitions. [2021-06-06 00:12:13,603 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 00:12:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 6140 transitions. [2021-06-06 00:12:13,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:13,605 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:13,605 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 00:12:13,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1867 [2021-06-06 00:12:13,805 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash -105433162, now seen corresponding path program 28 times [2021-06-06 00:12:13,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:13,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599409012] [2021-06-06 00:12:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:14,084 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 00:12:14,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:14,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599409012] [2021-06-06 00:12:14,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599409012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:14,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322355352] [2021-06-06 00:12:14,084 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 00:12:14,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:12:14,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:14,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:12:14,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:14,428 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:12:14,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,491 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 00:12:14,495 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,604 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:12:14,604 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,616 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:14,616 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 00:12:14,617 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,726 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,726 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 00:12:14,729 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,831 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:12:14,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,842 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,842 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 00:12:14,845 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:14,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:14,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:14,949 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:14,949 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 00:12:14,950 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:15,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,055 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:15,055 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 00:12:15,056 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:15,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,155 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:15,155 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 00:12:15,156 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:15,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:15,251 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:12:15,252 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 00:12:15,253 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:15,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:15,339 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 00:12:15,339 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-06 00:12:15,514 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 00:12:15,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322355352] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:15,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:15,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:12:15,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324272404] [2021-06-06 00:12:15,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:15,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:15,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:15,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:15,515 INFO L87 Difference]: Start difference. First operand 1809 states and 6140 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 00:12:15,828 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-06 00:12:16,307 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-06-06 00:12:16,819 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-06 00:12:17,067 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-06 00:12:17,526 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-06 00:12:17,717 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-06 00:12:17,962 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-06 00:12:18,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:18,057 INFO L93 Difference]: Finished difference Result 2637 states and 8679 transitions. [2021-06-06 00:12:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-06 00:12:18,057 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 00:12:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:18,061 INFO L225 Difference]: With dead ends: 2637 [2021-06-06 00:12:18,061 INFO L226 Difference]: Without dead ends: 2603 [2021-06-06 00:12:18,061 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2689.2ms TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:12:18,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-06 00:12:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1822. [2021-06-06 00:12:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions. [2021-06-06 00:12:18,085 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26 [2021-06-06 00:12:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:18,085 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions. [2021-06-06 00:12:18,085 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 00:12:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions. [2021-06-06 00:12:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:18,087 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:18,088 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 00:12:18,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1894,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:18,288 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:18,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1795376066, now seen corresponding path program 29 times [2021-06-06 00:12:18,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:18,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157253095] [2021-06-06 00:12:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:18,554 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 00:12:18,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:18,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157253095] [2021-06-06 00:12:18,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157253095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:18,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624183368] [2021-06-06 00:12:18,554 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 00:12:18,579 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:12:18,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:18,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:12:18,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:19,033 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_156, v_prenex_158], 6=[v_prenex_157]} [2021-06-06 00:12:19,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,056 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:19,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:19,068 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,091 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:19,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:19,092 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,242 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-06 00:12:19,242 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:19,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,258 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:19,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:19,263 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,279 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:19,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:19,281 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,418 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-06 00:12:19,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:19,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,435 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:19,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 35 [2021-06-06 00:12:19,439 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,456 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:12:19,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:12:19,458 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,730 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2021-06-06 00:12:19,731 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.4 percent of original size [2021-06-06 00:12:19,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:19,750 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:12:19,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:12:19,751 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:19,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:19,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:19,763 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:12:19,767 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:20,030 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-06 00:12:20,031 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.8 percent of original size [2021-06-06 00:12:20,048 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 00:12:20,048 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:373, output treesize:323 [2021-06-06 00:12:20,242 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-06-06 00:12:20,333 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 00:12:20,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624183368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:20,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:20,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:12:20,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65221620] [2021-06-06 00:12:20,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:20,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:20,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:20,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:20,334 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 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 00:12:20,472 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 27 [2021-06-06 00:12:21,237 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2021-06-06 00:12:22,371 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2021-06-06 00:12:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:22,415 INFO L93 Difference]: Finished difference Result 2416 states and 8045 transitions. [2021-06-06 00:12:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:12:22,415 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 00:12:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:22,419 INFO L225 Difference]: With dead ends: 2416 [2021-06-06 00:12:22,419 INFO L226 Difference]: Without dead ends: 2391 [2021-06-06 00:12:22,419 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2246.7ms TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:12:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-06-06 00:12:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1822. [2021-06-06 00:12:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions. [2021-06-06 00:12:22,440 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26 [2021-06-06 00:12:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:22,441 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions. [2021-06-06 00:12:22,441 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 00:12:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions. [2021-06-06 00:12:22,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:22,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:22,443 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 00:12:22,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1910,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:22,643 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:22,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1102392532, now seen corresponding path program 48 times [2021-06-06 00:12:22,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:22,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766832111] [2021-06-06 00:12:22,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:23,099 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 00:12:23,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:23,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766832111] [2021-06-06 00:12:23,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766832111] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:23,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154726047] [2021-06-06 00:12:23,099 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 00:12:23,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:12:23,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:23,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:12:23,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:23,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:23,578 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,587 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 00:12:23,588 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,596 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 00:12:23,597 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,606 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 00:12:23,607 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 19 [2021-06-06 00:12:23,616 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,625 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 00:12:23,626 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,633 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 00:12:23,634 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,642 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 45 treesize of output 19 [2021-06-06 00:12:23,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,656 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 00:12:23,656 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,664 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 00:12:23,665 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,672 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 00:12:23,673 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,680 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 00:12:23,681 INFO L550 ElimStorePlain]: Start of recursive call 13: 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 L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,686 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 00:12:23,687 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 41 treesize of output 19 [2021-06-06 00:12:23,689 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:23,697 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,704 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 00:12:23,705 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:23,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:23,710 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 00:12:23,711 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:23,761 INFO L628 ElimStorePlain]: treesize reduction 223, result has 12.9 percent of original size [2021-06-06 00:12:23,762 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 00:12:23,762 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:21 [2021-06-06 00:12:23,789 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 00:12:23,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154726047] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:23,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:23,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:12:23,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346087035] [2021-06-06 00:12:23,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:23,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:23,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:23,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:23,790 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 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 00:12:24,308 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2021-06-06 00:12:25,423 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-06-06 00:12:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:25,484 INFO L93 Difference]: Finished difference Result 2280 states and 7549 transitions. [2021-06-06 00:12:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:12:25,484 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 00:12:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:25,487 INFO L225 Difference]: With dead ends: 2280 [2021-06-06 00:12:25,487 INFO L226 Difference]: Without dead ends: 2258 [2021-06-06 00:12:25,488 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1897.5ms TimeCoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:12:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2021-06-06 00:12:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1818. [2021-06-06 00:12:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions. [2021-06-06 00:12:25,515 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26 [2021-06-06 00:12:25,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:25,516 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions. [2021-06-06 00:12:25,516 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 00:12:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions. [2021-06-06 00:12:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:25,518 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:25,518 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 00:12:25,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1966 [2021-06-06 00:12:25,718 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2027886398, now seen corresponding path program 49 times [2021-06-06 00:12:25,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:25,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6903646] [2021-06-06 00:12:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:26,156 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 00:12:26,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:26,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6903646] [2021-06-06 00:12:26,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6903646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:26,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722921307] [2021-06-06 00:12:26,157 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 00:12:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:26,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:12:26,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:26,500 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_161], 5=[v_prenex_163, v_prenex_159]} [2021-06-06 00:12:26,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:26,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:26,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:26,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:26,508 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-06 00:12:26,508 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:26,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:26,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:26,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:26,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:12:26,514 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:26,590 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size [2021-06-06 00:12:26,590 INFO L518 ElimStorePlain]: Eliminatee v_prenex_161 vanished before elimination [2021-06-06 00:12:26,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:26,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:12:26,594 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:26,620 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:26,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:26,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:26,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:26,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:26,624 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 00:12:26,625 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:26,657 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:26,659 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 00:12:26,660 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:43 [2021-06-06 00:12:26,706 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 00:12:26,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722921307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:26,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:26,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:12:26,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147814555] [2021-06-06 00:12:26,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:12:26,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:26,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:12:26,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:12:26,707 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 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 00:12:27,249 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2021-06-06 00:12:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:28,542 INFO L93 Difference]: Finished difference Result 2473 states and 8184 transitions. [2021-06-06 00:12:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:12:28,542 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 00:12:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:28,546 INFO L225 Difference]: With dead ends: 2473 [2021-06-06 00:12:28,546 INFO L226 Difference]: Without dead ends: 2458 [2021-06-06 00:12:28,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2017.9ms TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:12:28,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-06-06 00:12:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1818. [2021-06-06 00:12:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions. [2021-06-06 00:12:28,568 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26 [2021-06-06 00:12:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:28,569 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions. [2021-06-06 00:12:28,569 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 00:12:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions. [2021-06-06 00:12:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:28,571 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:28,571 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 00:12:28,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2056 [2021-06-06 00:12:28,771 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:28,772 INFO L82 PathProgramCache]: Analyzing trace with hash 849981858, now seen corresponding path program 50 times [2021-06-06 00:12:28,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:28,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883170128] [2021-06-06 00:12:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:29,167 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 00:12:29,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:29,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883170128] [2021-06-06 00:12:29,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883170128] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:29,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792681503] [2021-06-06 00:12:29,168 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) [2021-06-06 00:12:29,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:12:29,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:29,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 00:12:29,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:29,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:29,739 INFO L354 Elim1Store]: treesize reduction 20, result has 55.6 percent of original size [2021-06-06 00:12:29,739 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 40 [2021-06-06 00:12:29,741 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:29,782 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:29,782 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 52 [2021-06-06 00:12:29,790 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:29,840 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:12:29,840 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 00:12:29,843 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:29,895 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:29,896 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 00:12:29,902 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:29,944 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:12:29,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:29,947 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:29,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:29,987 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:12:29,987 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 00:12:29,993 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,046 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:30,046 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 52 [2021-06-06 00:12:30,056 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,101 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-06 00:12:30,101 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 00:12:30,104 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,137 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,137 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 00:12:30,155 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,202 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:30,202 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-06 00:12:30,208 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,243 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:30,243 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 63 [2021-06-06 00:12:30,254 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,297 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:12:30,297 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-06 00:12:30,302 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,322 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:30,322 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 00:12:30,323 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,342 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:30,342 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-06 00:12:30,342 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,379 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-06 00:12:30,380 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 37 [2021-06-06 00:12:30,381 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:30,393 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:30,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 1 [2021-06-06 00:12:30,394 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:30,821 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2021-06-06 00:12:30,822 INFO L628 ElimStorePlain]: treesize reduction 411, result has 45.1 percent of original size [2021-06-06 00:12:30,829 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 00:12:30,829 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:945, output treesize:389 [2021-06-06 00:12:31,104 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-06-06 00:12:31,200 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 00:12:31,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792681503] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:31,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:31,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-06-06 00:12:31,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149339857] [2021-06-06 00:12:31,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-06 00:12:31,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-06 00:12:31,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:12:31,201 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 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 00:12:31,831 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2021-06-06 00:12:32,339 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-06-06 00:12:32,797 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-06-06 00:12:33,009 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-06-06 00:12:33,289 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-06 00:12:33,833 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-06-06 00:12:34,376 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-06 00:12:34,675 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2021-06-06 00:12:34,889 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-06 00:12:35,112 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-06-06 00:12:35,292 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-06-06 00:12:35,981 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-06 00:12:36,224 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-06 00:12:36,704 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-06 00:12:36,837 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-06-06 00:12:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:37,400 INFO L93 Difference]: Finished difference Result 3328 states and 10546 transitions. [2021-06-06 00:12:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:12:37,400 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 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 26 [2021-06-06 00:12:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:37,405 INFO L225 Difference]: With dead ends: 3328 [2021-06-06 00:12:37,405 INFO L226 Difference]: Without dead ends: 3272 [2021-06-06 00:12:37,406 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 6069.2ms TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:12:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-06-06 00:12:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1831. [2021-06-06 00:12:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 3.40327868852459) internal successors, (6228), 1830 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:37,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 6228 transitions. [2021-06-06 00:12:37,437 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 6228 transitions. Word has length 26 [2021-06-06 00:12:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:37,437 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 6228 transitions. [2021-06-06 00:12:37,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 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 00:12:37,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 6228 transitions. [2021-06-06 00:12:37,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:37,440 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:37,440 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 00:12:37,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2070,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:37,645 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:37,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:37,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1044384706, now seen corresponding path program 51 times [2021-06-06 00:12:37,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:37,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105697223] [2021-06-06 00:12:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:38,034 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 00:12:38,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:38,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105697223] [2021-06-06 00:12:38,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105697223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:38,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716105575] [2021-06-06 00:12:38,035 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 00:12:38,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:12:38,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:38,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:12:38,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,636 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:38,636 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 52 [2021-06-06 00:12:38,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,691 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:38,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:38,696 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,733 INFO L354 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2021-06-06 00:12:38,733 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 36 [2021-06-06 00:12:38,735 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,786 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size [2021-06-06 00:12:38,786 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 00:12:38,795 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,815 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:38,815 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 37 treesize of output 1 [2021-06-06 00:12:38,816 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:38,853 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 00:12:38,876 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,920 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:12:38,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:38,927 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:38,968 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2021-06-06 00:12:38,968 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 42 [2021-06-06 00:12:38,971 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,020 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-06 00:12:39,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 52 [2021-06-06 00:12:39,027 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,069 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-06 00:12:39,069 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 00:12:39,074 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,094 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:39,094 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 00:12:39,095 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,128 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2021-06-06 00:12:39,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 29 [2021-06-06 00:12:39,129 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,148 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:39,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 1 [2021-06-06 00:12:39,149 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,167 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:39,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 1 [2021-06-06 00:12:39,168 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,210 INFO L354 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2021-06-06 00:12:39,210 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 48 [2021-06-06 00:12:39,212 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:39,224 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-06 00:12:39,224 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 00:12:39,225 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:39,701 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-06-06 00:12:39,701 INFO L628 ElimStorePlain]: treesize reduction 174, result has 69.4 percent of original size [2021-06-06 00:12:39,708 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 00:12:39,708 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:461 [2021-06-06 00:12:39,984 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-06 00:12:40,256 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-06 00:12:40,384 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 00:12:40,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716105575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:40,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:40,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-06 00:12:40,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233440628] [2021-06-06 00:12:40,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:12:40,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:40,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:12:40,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:12:40,385 INFO L87 Difference]: Start difference. First operand 1831 states and 6228 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 00:12:41,129 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2021-06-06 00:12:41,323 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2021-06-06 00:12:42,256 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-06 00:12:42,638 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-06-06 00:12:42,775 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-06 00:12:42,932 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-06 00:12:43,059 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-06-06 00:12:43,229 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-06 00:12:43,640 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-06 00:12:44,087 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-06-06 00:12:44,373 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-06 00:12:44,674 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-06-06 00:12:45,006 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2021-06-06 00:12:45,487 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-06 00:12:45,660 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 39 [2021-06-06 00:12:45,792 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-06 00:12:46,349 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2021-06-06 00:12:46,734 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-06 00:12:47,075 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-06 00:12:47,526 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-06 00:12:47,804 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-06-06 00:12:48,284 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-06-06 00:12:48,587 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 37 [2021-06-06 00:12:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:48,711 INFO L93 Difference]: Finished difference Result 3152 states and 10146 transitions. [2021-06-06 00:12:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:12:48,712 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 00:12:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:48,716 INFO L225 Difference]: With dead ends: 3152 [2021-06-06 00:12:48,716 INFO L226 Difference]: Without dead ends: 3089 [2021-06-06 00:12:48,716 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 8520.2ms TimeCoverageRelationStatistics Valid=867, Invalid=4103, Unknown=0, NotChecked=0, Total=4970 [2021-06-06 00:12:48,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-06-06 00:12:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1811. [2021-06-06 00:12:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.4027624309392266) internal successors, (6159), 1810 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6159 transitions. [2021-06-06 00:12:48,744 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6159 transitions. Word has length 26 [2021-06-06 00:12:48,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:48,744 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6159 transitions. [2021-06-06 00:12:48,744 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 00:12:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6159 transitions. [2021-06-06 00:12:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:48,746 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:48,746 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 00:12:48,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2245 [2021-06-06 00:12:48,947 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:48,947 INFO L82 PathProgramCache]: Analyzing trace with hash -696255298, now seen corresponding path program 52 times [2021-06-06 00:12:48,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:48,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210803941] [2021-06-06 00:12:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:49,270 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 00:12:49,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:49,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210803941] [2021-06-06 00:12:49,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210803941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:49,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008479568] [2021-06-06 00:12:49,270 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 00:12:49,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:12:49,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:49,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:12:49,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:49,898 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-06-06 00:12:50,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,095 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:50,096 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 21 treesize of output 37 [2021-06-06 00:12:50,101 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:50,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,130 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-06 00:12:50,130 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 26 treesize of output 32 [2021-06-06 00:12:50,133 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:50,401 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-06-06 00:12:50,402 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:50,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,440 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-06 00:12:50,440 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 31 treesize of output 39 [2021-06-06 00:12:50,444 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:50,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,475 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-06 00:12:50,475 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 26 treesize of output 36 [2021-06-06 00:12:50,480 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:50,746 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-06 00:12:50,746 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,774 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-06-06 00:12:50,774 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 24 [2021-06-06 00:12:50,775 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:50,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:50,799 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-06 00:12:50,799 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 00:12:50,803 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:51,230 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2021-06-06 00:12:51,230 INFO L628 ElimStorePlain]: treesize reduction 38, result has 92.7 percent of original size [2021-06-06 00:12:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,259 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:51,259 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 43 [2021-06-06 00:12:51,264 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:51,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,297 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-06 00:12:51,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 39 [2021-06-06 00:12:51,318 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:51,713 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2021-06-06 00:12:51,713 INFO L628 ElimStorePlain]: treesize reduction 47, result has 90.4 percent of original size [2021-06-06 00:12:51,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,741 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:51,741 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 43 [2021-06-06 00:12:51,751 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,777 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-06-06 00:12:51,777 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 35 treesize of output 26 [2021-06-06 00:12:51,778 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:51,961 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:12:51,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:51,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:51,990 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-06 00:12:51,990 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 31 [2021-06-06 00:12:51,993 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:52,006 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-06-06 00:12:52,006 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 00:12:52,006 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:52,144 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-06 00:12:52,144 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:52,156 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-06 00:12:52,156 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:621, output treesize:257 [2021-06-06 00:12:52,300 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 00:12:52,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008479568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:52,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:52,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-06 00:12:52,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541524942] [2021-06-06 00:12:52,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:12:52,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:52,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:12:52,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:12:52,301 INFO L87 Difference]: Start difference. First operand 1811 states and 6159 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 00:12:53,474 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-06 00:12:54,280 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-06-06 00:12:54,826 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2021-06-06 00:12:55,330 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2021-06-06 00:12:55,452 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-06-06 00:12:55,688 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-06-06 00:12:55,835 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-06-06 00:12:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:56,234 INFO L93 Difference]: Finished difference Result 3034 states and 9904 transitions. [2021-06-06 00:12:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:12:56,235 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 00:12:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:56,239 INFO L225 Difference]: With dead ends: 3034 [2021-06-06 00:12:56,239 INFO L226 Difference]: Without dead ends: 2983 [2021-06-06 00:12:56,239 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 4049.3ms TimeCoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:12:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-06 00:12:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1871. [2021-06-06 00:12:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.411229946524064) internal successors, (6379), 1870 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6379 transitions. [2021-06-06 00:12:56,266 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6379 transitions. Word has length 26 [2021-06-06 00:12:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:56,267 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6379 transitions. [2021-06-06 00:12:56,267 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 00:12:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6379 transitions. [2021-06-06 00:12:56,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:56,269 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:56,269 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 00:12:56,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2410 [2021-06-06 00:12:56,470 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:56,470 INFO L82 PathProgramCache]: Analyzing trace with hash 227092556, now seen corresponding path program 53 times [2021-06-06 00:12:56,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:56,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198639468] [2021-06-06 00:12:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:56,799 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 00:12:56,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:56,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198639468] [2021-06-06 00:12:56,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198639468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:56,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729190413] [2021-06-06 00:12:56,800 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 00:12:56,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:12:56,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:56,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:12:56,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:57,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,260 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,263 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 43 treesize of output 19 [2021-06-06 00:12:57,263 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,271 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 00:12:57,271 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:57,280 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,288 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 00:12:57,289 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,296 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 00:12:57,296 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,303 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 39 treesize of output 19 [2021-06-06 00:12:57,304 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,311 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 00:12:57,312 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,319 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 45 treesize of output 16 [2021-06-06 00:12:57,319 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,326 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 32 treesize of output 13 [2021-06-06 00:12:57,327 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,334 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 00:12:57,335 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,342 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 34 treesize of output 16 [2021-06-06 00:12:57,343 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,351 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 00:12:57,351 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,358 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-06 00:12:57,359 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:12:57,367 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,374 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 00:12:57,375 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:57,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:12:57,380 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 7 [2021-06-06 00:12:57,382 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:57,427 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-06 00:12:57,428 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 00:12:57,428 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-06 00:12:57,460 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 00:12:57,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729190413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:57,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:12:57,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:12:57,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000579247] [2021-06-06 00:12:57,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:12:57,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:12:57,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:12:57,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:12:57,461 INFO L87 Difference]: Start difference. First operand 1871 states and 6379 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 00:12:58,494 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-06-06 00:12:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:12:58,821 INFO L93 Difference]: Finished difference Result 2487 states and 8126 transitions. [2021-06-06 00:12:58,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:12:58,822 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 00:12:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:12:58,825 INFO L225 Difference]: With dead ends: 2487 [2021-06-06 00:12:58,825 INFO L226 Difference]: Without dead ends: 2449 [2021-06-06 00:12:58,825 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1547.0ms TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:12:58,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2021-06-06 00:12:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1871. [2021-06-06 00:12:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.409090909090909) internal successors, (6375), 1870 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:12:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6375 transitions. [2021-06-06 00:12:58,847 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6375 transitions. Word has length 26 [2021-06-06 00:12:58,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:12:58,848 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6375 transitions. [2021-06-06 00:12:58,848 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 00:12:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6375 transitions. [2021-06-06 00:12:58,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:12:58,850 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:12:58,850 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] [2021-06-06 00:12:59,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2495,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:12:59,069 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:12:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:12:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash -538930356, now seen corresponding path program 54 times [2021-06-06 00:12:59,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:12:59,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804192813] [2021-06-06 00:12:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:12:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:12:59,411 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 00:12:59,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:12:59,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804192813] [2021-06-06 00:12:59,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804192813] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:12:59,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32915472] [2021-06-06 00:12:59,412 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 00:12:59,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:12:59,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:12:59,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:12:59,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:12:59,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,658 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:12:59,658 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 00:12:59,660 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,683 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-06 00:12:59,683 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 30 treesize of output 28 [2021-06-06 00:12:59,698 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,726 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-06 00:12:59,726 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 25 [2021-06-06 00:12:59,727 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,742 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:59,742 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 00:12:59,743 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,765 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:12:59,765 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 00:12:59,766 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,788 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:12:59,789 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 00:12:59,790 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,803 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:59,803 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 00:12:59,804 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,828 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-06 00:12:59,829 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 26 [2021-06-06 00:12:59,830 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,844 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:59,844 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 30 treesize of output 1 [2021-06-06 00:12:59,844 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,859 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:59,859 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 00:12:59,859 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,881 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-06 00:12:59,881 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 00:12:59,883 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,897 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:59,897 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 37 treesize of output 1 [2021-06-06 00:12:59,898 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,919 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-06 00:12:59,919 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 30 treesize of output 24 [2021-06-06 00:12:59,920 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:12:59,941 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 00:12:59,947 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,967 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-06 00:12:59,968 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 00:12:59,969 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:12:59,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:12:59,977 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-06 00:12:59,977 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 00:12:59,978 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:00,062 INFO L628 ElimStorePlain]: treesize reduction 122, result has 43.3 percent of original size [2021-06-06 00:13:00,063 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:13:00,063 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:93 [2021-06-06 00:13:00,165 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 00:13:00,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32915472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:00,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:00,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-06 00:13:00,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867323726] [2021-06-06 00:13:00,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:00,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:00,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:00,166 INFO L87 Difference]: Start difference. First operand 1871 states and 6375 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 00:13:00,595 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-06-06 00:13:00,995 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-06-06 00:13:01,358 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-06-06 00:13:01,753 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2021-06-06 00:13:02,411 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-06-06 00:13:02,706 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2021-06-06 00:13:02,927 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-06-06 00:13:03,206 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2021-06-06 00:13:03,372 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-06-06 00:13:03,577 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2021-06-06 00:13:03,812 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-06-06 00:13:04,067 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-06 00:13:04,276 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2021-06-06 00:13:04,544 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-06-06 00:13:04,841 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2021-06-06 00:13:05,124 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-06-06 00:13:05,439 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-06-06 00:13:05,632 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-06-06 00:13:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:05,818 INFO L93 Difference]: Finished difference Result 3107 states and 9967 transitions. [2021-06-06 00:13:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:13:05,819 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 00:13:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:05,823 INFO L225 Difference]: With dead ends: 3107 [2021-06-06 00:13:05,823 INFO L226 Difference]: Without dead ends: 3069 [2021-06-06 00:13:05,824 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 5457.2ms TimeCoverageRelationStatistics Valid=747, Invalid=2913, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:13:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-06-06 00:13:05,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1881. [2021-06-06 00:13:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 3.4159574468085108) internal successors, (6422), 1880 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 6422 transitions. [2021-06-06 00:13:05,852 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 6422 transitions. Word has length 26 [2021-06-06 00:13:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:05,852 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 6422 transitions. [2021-06-06 00:13:05,852 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 00:13:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 6422 transitions. [2021-06-06 00:13:05,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:05,854 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:05,854 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 00:13:06,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2591,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:06,056 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:06,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:06,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1644457752, now seen corresponding path program 30 times [2021-06-06 00:13:06,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:06,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324587582] [2021-06-06 00:13:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:06,366 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 00:13:06,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:06,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324587582] [2021-06-06 00:13:06,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324587582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:06,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91267230] [2021-06-06 00:13:06,366 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 00:13:06,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:13:06,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:06,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:13:06,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:06,754 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-06 00:13:06,948 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-06 00:13:06,994 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_191, v_prenex_189], 2=[v_prenex_190, A]} [2021-06-06 00:13:06,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:06,999 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 26 treesize of output 16 [2021-06-06 00:13:07,000 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:07,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:07,004 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 00:13:07,016 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:07,163 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-06 00:13:07,164 INFO L628 ElimStorePlain]: treesize reduction 118, result has 55.1 percent of original size [2021-06-06 00:13:07,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:07,167 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 11 treesize of output 7 [2021-06-06 00:13:07,169 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:07,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:07,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:07,218 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 28 treesize of output 16 [2021-06-06 00:13:07,219 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:07,261 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:07,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:07,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:07,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:07,267 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:13:07,268 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:07,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:07,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:07,272 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:07,308 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:07,310 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:13:07,310 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:293, output treesize:51 [2021-06-06 00:13:07,366 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 00:13:07,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91267230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:07,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:07,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-06 00:13:07,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086805571] [2021-06-06 00:13:07,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:07,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:07,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:07,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:07,367 INFO L87 Difference]: Start difference. First operand 1881 states and 6422 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 00:13:08,082 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-06 00:13:08,583 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-06 00:13:08,817 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2021-06-06 00:13:09,056 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-06-06 00:13:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:09,182 INFO L93 Difference]: Finished difference Result 2308 states and 7739 transitions. [2021-06-06 00:13:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:13:09,182 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 00:13:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:09,185 INFO L225 Difference]: With dead ends: 2308 [2021-06-06 00:13:09,185 INFO L226 Difference]: Without dead ends: 2293 [2021-06-06 00:13:09,185 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2078.0ms TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:13:09,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-06-06 00:13:09,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1873. [2021-06-06 00:13:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 3.419337606837607) internal successors, (6401), 1872 states have internal predecessors, (6401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 6401 transitions. [2021-06-06 00:13:09,206 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 6401 transitions. Word has length 26 [2021-06-06 00:13:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:09,207 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 6401 transitions. [2021-06-06 00:13:09,207 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 00:13:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 6401 transitions. [2021-06-06 00:13:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:09,209 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:09,209 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 00:13:09,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2616 [2021-06-06 00:13:09,409 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1033146674, now seen corresponding path program 31 times [2021-06-06 00:13:09,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:09,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965658826] [2021-06-06 00:13:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:09,699 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 00:13:09,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:09,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965658826] [2021-06-06 00:13:09,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965658826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:09,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127656349] [2021-06-06 00:13:09,699 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) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:13:09,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:10,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,018 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 21 treesize of output 13 [2021-06-06 00:13:10,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,024 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:10,030 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,035 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:13:10,035 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:13:10,041 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,046 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:10,062 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,067 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,072 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,077 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,082 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:10,087 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,092 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:10,097 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:10,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:10,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:10,101 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:10,172 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:13:10,173 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 00:13:10,173 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:13:10,228 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 00:13:10,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127656349] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:10,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:10,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:13:10,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495499004] [2021-06-06 00:13:10,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:10,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:10,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:10,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:10,228 INFO L87 Difference]: Start difference. First operand 1873 states and 6401 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 00:13:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:10,614 INFO L93 Difference]: Finished difference Result 2211 states and 7445 transitions. [2021-06-06 00:13:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 00:13:10,615 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 00:13:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:10,618 INFO L225 Difference]: With dead ends: 2211 [2021-06-06 00:13:10,618 INFO L226 Difference]: Without dead ends: 2196 [2021-06-06 00:13:10,618 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 619.6ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:13:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-06-06 00:13:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1867. [2021-06-06 00:13:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 3.4190782422293675) internal successors, (6380), 1866 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6380 transitions. [2021-06-06 00:13:10,654 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6380 transitions. Word has length 26 [2021-06-06 00:13:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:10,654 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 6380 transitions. [2021-06-06 00:13:10,654 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 00:13:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6380 transitions. [2021-06-06 00:13:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:10,665 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:10,665 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 00:13:10,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2629,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:10,877 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:10,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:10,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1034369354, now seen corresponding path program 32 times [2021-06-06 00:13:10,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:10,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481795580] [2021-06-06 00:13:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:11,217 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 00:13:11,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:11,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481795580] [2021-06-06 00:13:11,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481795580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:11,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022766413] [2021-06-06 00:13:11,218 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 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 00:13:11,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:11,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:11,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:13:11,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:11,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:11,513 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 00:13:11,516 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,524 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,524 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 00:13:11,524 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,534 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:11,535 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 00:13:11,536 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,543 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,544 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 00:13:11,544 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,555 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:11,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:11,556 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,564 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,564 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 00:13:11,565 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,575 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:11,575 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 00:13:11,579 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,588 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,588 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 36 treesize of output 22 [2021-06-06 00:13:11,588 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,599 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:11,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:11,600 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,609 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:11,610 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,618 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,618 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 00:13:11,619 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:11,630 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 27 [2021-06-06 00:13:11,632 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,641 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,641 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 31 treesize of output 19 [2021-06-06 00:13:11,641 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:11,652 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 33 treesize of output 27 [2021-06-06 00:13:11,653 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,660 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:11,660 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 00:13:11,661 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:11,668 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:11,668 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 21 treesize of output 17 [2021-06-06 00:13:11,670 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:11,749 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:11,753 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 00:13:11,753 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:174 [2021-06-06 00:13:11,925 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 00:13:11,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022766413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:11,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:11,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:13:11,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651492568] [2021-06-06 00:13:11,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:11,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:11,926 INFO L87 Difference]: Start difference. First operand 1867 states and 6380 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 00:13:12,517 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2021-06-06 00:13:13,041 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-06-06 00:13:13,387 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2021-06-06 00:13:13,551 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-06 00:13:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:13,596 INFO L93 Difference]: Finished difference Result 2784 states and 9269 transitions. [2021-06-06 00:13:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:13:13,596 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 00:13:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:13,600 INFO L225 Difference]: With dead ends: 2784 [2021-06-06 00:13:13,600 INFO L226 Difference]: Without dead ends: 2769 [2021-06-06 00:13:13,601 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1932.2ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:13:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-06-06 00:13:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1864. [2021-06-06 00:13:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 3.416532474503489) internal successors, (6365), 1863 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 6365 transitions. [2021-06-06 00:13:13,634 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 6365 transitions. Word has length 26 [2021-06-06 00:13:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:13,634 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 6365 transitions. [2021-06-06 00:13:13,634 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 00:13:13,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 6365 transitions. [2021-06-06 00:13:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:13,636 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:13,636 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 00:13:13,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2657 [2021-06-06 00:13:13,841 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:13,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1269968860, now seen corresponding path program 33 times [2021-06-06 00:13:13,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:13,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714547760] [2021-06-06 00:13:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:14,175 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 00:13:14,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:14,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714547760] [2021-06-06 00:13:14,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714547760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:14,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813550072] [2021-06-06 00:13:14,176 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 00:13:14,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:13:14,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:14,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:13:14,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:14,472 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:13:14,699 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-06 00:13:14,789 INFO L446 ElimStorePlain]: Different costs {1=[A, v_prenex_201], 2=[v_prenex_199, v_prenex_200]} [2021-06-06 00:13:14,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:14,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-06 00:13:14,794 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:14,906 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-06-06 00:13:14,906 INFO L628 ElimStorePlain]: treesize reduction 54, result has 73.9 percent of original size [2021-06-06 00:13:14,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:14,910 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 00:13:14,911 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:14,957 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:14,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:14,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:14,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:14,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:14,963 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:14,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:14,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:14,966 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 21 treesize of output 13 [2021-06-06 00:13:14,967 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:15,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:15,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:15,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:15,011 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 00:13:15,012 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:15,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:15,051 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:13:15,051 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:217, output treesize:51 [2021-06-06 00:13:15,105 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 00:13:15,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813550072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:15,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:15,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:13:15,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838539839] [2021-06-06 00:13:15,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:15,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:15,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:15,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:15,106 INFO L87 Difference]: Start difference. First operand 1864 states and 6365 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 00:13:16,283 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-06 00:13:16,664 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-06 00:13:16,972 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-06 00:13:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:17,113 INFO L93 Difference]: Finished difference Result 2480 states and 8310 transitions. [2021-06-06 00:13:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:13:17,113 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 00:13:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:17,117 INFO L225 Difference]: With dead ends: 2480 [2021-06-06 00:13:17,117 INFO L226 Difference]: Without dead ends: 2465 [2021-06-06 00:13:17,117 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2356.8ms TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:13:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-06-06 00:13:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1863. [2021-06-06 00:13:17,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4162191192266382) internal successors, (6361), 1862 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:17,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6361 transitions. [2021-06-06 00:13:17,141 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6361 transitions. Word has length 26 [2021-06-06 00:13:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:17,141 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6361 transitions. [2021-06-06 00:13:17,141 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 00:13:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6361 transitions. [2021-06-06 00:13:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:17,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:17,143 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, 1, 1] [2021-06-06 00:13:17,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2694 [2021-06-06 00:13:17,343 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:17,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1946185846, now seen corresponding path program 34 times [2021-06-06 00:13:17,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:17,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335398378] [2021-06-06 00:13:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:17,604 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 00:13:17,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:17,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335398378] [2021-06-06 00:13:17,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335398378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:17,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946593733] [2021-06-06 00:13:17,605 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 00:13:17,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:17,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:17,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:13:17,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:17,902 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-06 00:13:18,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,009 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:18,009 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 00:13:18,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,118 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:13:18,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,130 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:18,130 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 00:13:18,132 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,243 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:18,246 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,345 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,357 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 00:13:18,360 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,457 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,468 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 00:13:18,472 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,574 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,574 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 00:13:18,575 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,665 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,675 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 00:13:18,677 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,774 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:18,783 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:18,783 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 00:13:18,784 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:18,865 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:18,871 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 00:13:18,871 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-06 00:13:19,037 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 00:13:19,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946593733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:19,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:19,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:13:19,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789236416] [2021-06-06 00:13:19,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:19,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:19,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:19,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:19,037 INFO L87 Difference]: Start difference. First operand 1863 states and 6361 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 00:13:19,585 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2021-06-06 00:13:20,041 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-06 00:13:20,521 WARN L205 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-06 00:13:20,923 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-06-06 00:13:21,109 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-06-06 00:13:21,378 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2021-06-06 00:13:21,514 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-06-06 00:13:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:21,604 INFO L93 Difference]: Finished difference Result 2968 states and 9767 transitions. [2021-06-06 00:13:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:13:21,604 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 00:13:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:21,608 INFO L225 Difference]: With dead ends: 2968 [2021-06-06 00:13:21,608 INFO L226 Difference]: Without dead ends: 2938 [2021-06-06 00:13:21,608 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2736.5ms TimeCoverageRelationStatistics Valid=276, Invalid=984, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:13:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-06-06 00:13:21,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1863. [2021-06-06 00:13:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4183673469387754) internal successors, (6365), 1862 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6365 transitions. [2021-06-06 00:13:21,634 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6365 transitions. Word has length 26 [2021-06-06 00:13:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:21,634 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6365 transitions. [2021-06-06 00:13:21,634 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 00:13:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6365 transitions. [2021-06-06 00:13:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:21,636 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:21,636 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 00:13:21,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2703,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:21,837 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:21,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash 663462910, now seen corresponding path program 35 times [2021-06-06 00:13:21,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:21,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799012663] [2021-06-06 00:13:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:22,195 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 00:13:22,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:22,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799012663] [2021-06-06 00:13:22,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799012663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:22,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721880521] [2021-06-06 00:13:22,195 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 00:13:22,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:13:22,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:22,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:13:22,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:22,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,604 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 28 treesize of output 16 [2021-06-06 00:13:22,605 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:22,612 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:22,619 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,624 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 00:13:22,625 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,640 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:13:22,641 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:22,647 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:22,653 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:22,659 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:22,665 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:22,671 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:22,677 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,682 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:13:22,683 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:22,689 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:13:22,695 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:22,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:22,698 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:13:22,698 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:22,768 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:13:22,769 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 00:13:22,769 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:13:22,817 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 00:13:22,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721880521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:22,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:22,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:13:22,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787001060] [2021-06-06 00:13:22,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:13:22,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:13:22,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:13:22,817 INFO L87 Difference]: Start difference. First operand 1863 states and 6365 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 00:13:23,573 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-06 00:13:23,717 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-06 00:13:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:23,888 INFO L93 Difference]: Finished difference Result 2374 states and 7932 transitions. [2021-06-06 00:13:23,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:13:23,889 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 00:13:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:23,892 INFO L225 Difference]: With dead ends: 2374 [2021-06-06 00:13:23,892 INFO L226 Difference]: Without dead ends: 2353 [2021-06-06 00:13:23,892 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1353.2ms TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:13:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-06-06 00:13:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1878. [2021-06-06 00:13:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 3.4214171550346295) internal successors, (6422), 1877 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 6422 transitions. [2021-06-06 00:13:23,921 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 6422 transitions. Word has length 26 [2021-06-06 00:13:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:23,921 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 6422 transitions. [2021-06-06 00:13:23,921 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 00:13:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 6422 transitions. [2021-06-06 00:13:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:23,923 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:23,923 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 00:13:24,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2718,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:24,123 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:24,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:24,124 INFO L82 PathProgramCache]: Analyzing trace with hash -716780640, now seen corresponding path program 36 times [2021-06-06 00:13:24,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:24,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69902113] [2021-06-06 00:13:24,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:24,354 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 00:13:24,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:24,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69902113] [2021-06-06 00:13:24,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69902113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:24,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165877026] [2021-06-06 00:13:24,354 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 00:13:24,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:13:24,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:24,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:13:24,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:24,679 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:24,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:24,681 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,689 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:24,690 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,704 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:24,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 35 [2021-06-06 00:13:24,707 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,715 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 22 [2021-06-06 00:13:24,716 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,732 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:24,732 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 24 [2021-06-06 00:13:24,733 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,753 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:24,753 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 28 [2021-06-06 00:13:24,756 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,765 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:24,766 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,784 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:24,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:24,788 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,797 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:24,798 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,807 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,807 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 28 treesize of output 16 [2021-06-06 00:13:24,807 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,816 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,816 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:13:24,816 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,825 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 16 [2021-06-06 00:13:24,825 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,834 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:24,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:24,835 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:24,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:24,854 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,869 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:24,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 35 [2021-06-06 00:13:24,870 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,883 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:24,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:24,884 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:24,986 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-06-06 00:13:24,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:24,996 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 00:13:24,996 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:255 [2021-06-06 00:13:25,154 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-06 00:13:25,243 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 00:13:25,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165877026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:25,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:25,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-06 00:13:25,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916328932] [2021-06-06 00:13:25,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:13:25,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:25,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:13:25,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:13:25,244 INFO L87 Difference]: Start difference. First operand 1878 states and 6422 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 00:13:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:27,033 INFO L93 Difference]: Finished difference Result 2454 states and 8038 transitions. [2021-06-06 00:13:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:13:27,034 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 00:13:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:27,037 INFO L225 Difference]: With dead ends: 2454 [2021-06-06 00:13:27,037 INFO L226 Difference]: Without dead ends: 2416 [2021-06-06 00:13:27,038 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1786.6ms TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:13:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-06-06 00:13:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1866. [2021-06-06 00:13:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.420911528150134) internal successors, (6380), 1865 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6380 transitions. [2021-06-06 00:13:27,061 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6380 transitions. Word has length 26 [2021-06-06 00:13:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:27,061 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6380 transitions. [2021-06-06 00:13:27,061 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 00:13:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6380 transitions. [2021-06-06 00:13:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:27,064 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:27,064 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 00:13:27,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2746,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:27,280 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 475685792, now seen corresponding path program 37 times [2021-06-06 00:13:27,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:27,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364283941] [2021-06-06 00:13:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:27,534 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 00:13:27,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:27,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364283941] [2021-06-06 00:13:27,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364283941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:27,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286588907] [2021-06-06 00:13:27,535 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 00:13:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:27,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:13:27,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:27,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:27,801 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 00:13:27,802 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,810 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,810 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 00:13:27,811 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,821 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:27,821 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 00:13:27,824 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:27,835 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 33 treesize of output 27 [2021-06-06 00:13:27,837 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,848 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:27,848 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 00:13:27,849 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,860 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:27,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:27,862 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,870 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:27,870 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:27,879 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,887 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:27,888 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,898 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:27,899 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 00:13:27,900 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,912 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:27,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:27,913 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,922 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,922 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 36 treesize of output 22 [2021-06-06 00:13:27,923 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,931 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:27,931 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,939 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,939 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 00:13:27,940 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,949 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:27,949 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 00:13:27,952 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:27,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:27,958 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:27,958 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 00:13:27,959 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:28,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:28,055 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 00:13:28,055 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:705, output treesize:180 [2021-06-06 00:13:28,202 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-06 00:13:28,290 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 00:13:28,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286588907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:28,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:28,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:13:28,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448138211] [2021-06-06 00:13:28,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:28,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:28,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:28,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:28,291 INFO L87 Difference]: Start difference. First operand 1866 states and 6380 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 00:13:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:28,761 INFO L93 Difference]: Finished difference Result 2282 states and 7604 transitions. [2021-06-06 00:13:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:13:28,761 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 00:13:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:28,764 INFO L225 Difference]: With dead ends: 2282 [2021-06-06 00:13:28,764 INFO L226 Difference]: Without dead ends: 2257 [2021-06-06 00:13:28,765 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 796.7ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:13:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-06-06 00:13:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1857. [2021-06-06 00:13:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 3.4132543103448274) internal successors, (6335), 1856 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 6335 transitions. [2021-06-06 00:13:28,787 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 6335 transitions. Word has length 26 [2021-06-06 00:13:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:28,787 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 6335 transitions. [2021-06-06 00:13:28,787 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 00:13:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 6335 transitions. [2021-06-06 00:13:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:28,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:28,790 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 00:13:28,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2797 [2021-06-06 00:13:28,990 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:28,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:28,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1353247494, now seen corresponding path program 38 times [2021-06-06 00:13:28,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:28,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570788120] [2021-06-06 00:13:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:29,254 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 00:13:29,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:29,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570788120] [2021-06-06 00:13:29,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570788120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:29,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061156106] [2021-06-06 00:13:29,255 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 00:13:29,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:29,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:29,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:13:29,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:29,565 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:29,570 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 19 [2021-06-06 00:13:29,575 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:29,580 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:29,586 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:29,591 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,597 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-06 00:13:29,599 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,604 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 33 treesize of output 19 [2021-06-06 00:13:29,604 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,609 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 33 treesize of output 19 [2021-06-06 00:13:29,610 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,614 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-06 00:13:29,615 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,620 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 28 treesize of output 16 [2021-06-06 00:13:29,620 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:29,626 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:29,631 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:29,636 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:29,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:29,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:29,639 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:29,709 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:13:29,710 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 00:13:29,710 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:13:29,762 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 00:13:29,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061156106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:29,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:29,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:13:29,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357684382] [2021-06-06 00:13:29,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:29,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:29,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:29,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:29,763 INFO L87 Difference]: Start difference. First operand 1857 states and 6335 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 00:13:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:30,072 INFO L93 Difference]: Finished difference Result 1943 states and 6537 transitions. [2021-06-06 00:13:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-06 00:13:30,072 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 00:13:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:30,075 INFO L225 Difference]: With dead ends: 1943 [2021-06-06 00:13:30,075 INFO L226 Difference]: Without dead ends: 1924 [2021-06-06 00:13:30,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 466.5ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-06-06 00:13:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1834. [2021-06-06 00:13:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.413529732678669) internal successors, (6257), 1833 states have internal predecessors, (6257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6257 transitions. [2021-06-06 00:13:30,097 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6257 transitions. Word has length 26 [2021-06-06 00:13:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:30,097 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 6257 transitions. [2021-06-06 00:13:30,097 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 00:13:30,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6257 transitions. [2021-06-06 00:13:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:30,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:30,099 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 00:13:30,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2838,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:30,300 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:30,300 INFO L82 PathProgramCache]: Analyzing trace with hash 794427266, now seen corresponding path program 39 times [2021-06-06 00:13:30,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:30,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901209508] [2021-06-06 00:13:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:30,513 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 00:13:30,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:30,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901209508] [2021-06-06 00:13:30,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901209508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:30,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23251318] [2021-06-06 00:13:30,514 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 00:13:30,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:13:30,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:30,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:13:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:30,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:30,921 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:30,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:30,924 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:30,945 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:30,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:30,946 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,083 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-06 00:13:31,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:31,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:31,104 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:31,104 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 00:13:31,105 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:31,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:31,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:31,125 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,382 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-06-06 00:13:31,382 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size [2021-06-06 00:13:31,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:31,399 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:31,399 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 00:13:31,402 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:31,420 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:31,421 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-06 00:13:31,422 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,660 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-06 00:13:31,660 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.1 percent of original size [2021-06-06 00:13:31,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:31,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:31,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:31,680 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:31,695 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:31,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:31,696 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:31,813 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-06 00:13:31,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:31,829 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 00:13:31,829 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:253 [2021-06-06 00:13:32,008 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-06-06 00:13:32,095 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 00:13:32,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23251318] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:32,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:32,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-06 00:13:32,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092424933] [2021-06-06 00:13:32,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:32,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:32,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:32,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:32,096 INFO L87 Difference]: Start difference. First operand 1834 states and 6257 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 00:13:32,705 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-06 00:13:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:32,901 INFO L93 Difference]: Finished difference Result 2041 states and 6856 transitions. [2021-06-06 00:13:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:13:32,902 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 00:13:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:32,904 INFO L225 Difference]: With dead ends: 2041 [2021-06-06 00:13:32,904 INFO L226 Difference]: Without dead ends: 2016 [2021-06-06 00:13:32,904 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1136.9ms TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:13:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-06-06 00:13:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1816. [2021-06-06 00:13:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 3.41763085399449) internal successors, (6203), 1815 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 6203 transitions. [2021-06-06 00:13:32,931 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 6203 transitions. Word has length 26 [2021-06-06 00:13:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:32,931 INFO L482 AbstractCegarLoop]: Abstraction has 1816 states and 6203 transitions. [2021-06-06 00:13:32,931 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 00:13:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 6203 transitions. [2021-06-06 00:13:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:32,933 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:32,933 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 00:13:33,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2866 [2021-06-06 00:13:33,133 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:33,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1247883966, now seen corresponding path program 40 times [2021-06-06 00:13:33,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:33,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373624447] [2021-06-06 00:13:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:33,397 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 00:13:33,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:33,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373624447] [2021-06-06 00:13:33,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373624447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:33,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732006585] [2021-06-06 00:13:33,397 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 00:13:33,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:33,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:33,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:13:33,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:33,729 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-06 00:13:33,814 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_232], 3=[v_prenex_233, v_prenex_234]} [2021-06-06 00:13:33,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:33,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:33,827 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 00:13:33,828 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:33,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:33,838 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:33,838 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 00:13:33,840 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:33,964 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-06 00:13:33,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:33,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:33,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:33,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:33,978 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:33,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:33,987 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:33,987 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 00:13:33,989 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:34,115 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:13:34,115 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,128 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:13:34,128 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 32 treesize of output 22 [2021-06-06 00:13:34,129 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:34,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,141 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:34,141 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 30 treesize of output 26 [2021-06-06 00:13:34,145 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:34,248 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-06 00:13:34,248 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:34,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,259 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:34,259 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 00:13:34,263 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:34,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:34,272 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:13:34,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:34,273 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:34,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:34,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:13:34,375 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:361, output treesize:194 [2021-06-06 00:13:34,556 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 00:13:34,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732006585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:34,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:34,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:13:34,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043316577] [2021-06-06 00:13:34,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:34,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:34,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:34,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:34,557 INFO L87 Difference]: Start difference. First operand 1816 states and 6203 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 00:13:34,842 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-06-06 00:13:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:35,373 INFO L93 Difference]: Finished difference Result 2323 states and 7788 transitions. [2021-06-06 00:13:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:13:35,374 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 00:13:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:35,377 INFO L225 Difference]: With dead ends: 2323 [2021-06-06 00:13:35,377 INFO L226 Difference]: Without dead ends: 2298 [2021-06-06 00:13:35,377 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1088.6ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:13:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-06-06 00:13:35,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1804. [2021-06-06 00:13:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 3.4170826400443706) internal successors, (6161), 1803 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 6161 transitions. [2021-06-06 00:13:35,400 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 6161 transitions. Word has length 26 [2021-06-06 00:13:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:35,401 INFO L482 AbstractCegarLoop]: Abstraction has 1804 states and 6161 transitions. [2021-06-06 00:13:35,401 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 00:13:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 6161 transitions. [2021-06-06 00:13:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:35,403 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:35,403 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 00:13:35,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2922,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:35,603 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:35,604 INFO L82 PathProgramCache]: Analyzing trace with hash 305289786, now seen corresponding path program 41 times [2021-06-06 00:13:35,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:35,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27267755] [2021-06-06 00:13:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:35,860 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 00:13:35,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:35,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27267755] [2021-06-06 00:13:35,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27267755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:35,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198154478] [2021-06-06 00:13:35,860 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 00:13:35,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:13:35,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:35,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:13:35,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:36,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:36,237 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,241 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:13:36,242 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:13:36,248 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,253 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 28 treesize of output 16 [2021-06-06 00:13:36,253 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,260 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,266 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,271 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,277 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,282 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,288 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,293 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-06 00:13:36,303 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:36,309 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-06 00:13:36,314 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:36,319 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:36,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:36,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:36,322 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:36,390 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-06 00:13:36,392 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 00:13:36,392 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-06 00:13:36,501 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 00:13:36,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198154478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:36,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:36,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:13:36,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396146604] [2021-06-06 00:13:36,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:13:36,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:36,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:13:36,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:13:36,502 INFO L87 Difference]: Start difference. First operand 1804 states and 6161 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 00:13:37,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:37,356 INFO L93 Difference]: Finished difference Result 2327 states and 7784 transitions. [2021-06-06 00:13:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:13:37,356 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 00:13:37,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:37,359 INFO L225 Difference]: With dead ends: 2327 [2021-06-06 00:13:37,359 INFO L226 Difference]: Without dead ends: 2312 [2021-06-06 00:13:37,359 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 991.1ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:13:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-06-06 00:13:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1849. [2021-06-06 00:13:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 3.411796536796537) internal successors, (6305), 1848 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 6305 transitions. [2021-06-06 00:13:37,380 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 6305 transitions. Word has length 26 [2021-06-06 00:13:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:37,380 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 6305 transitions. [2021-06-06 00:13:37,381 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 00:13:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 6305 transitions. [2021-06-06 00:13:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:37,383 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:37,383 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 00:13:37,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2954,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:37,583 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:37,583 INFO L82 PathProgramCache]: Analyzing trace with hash 137480694, now seen corresponding path program 42 times [2021-06-06 00:13:37,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:37,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723942529] [2021-06-06 00:13:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:37,919 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 00:13:37,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:37,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723942529] [2021-06-06 00:13:37,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723942529] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:37,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742851315] [2021-06-06 00:13:37,919 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 00:13:37,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:13:37,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:13:37,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:38,260 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 treesize of output 22 [2021-06-06 00:13:38,261 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,269 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:38,270 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,278 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:38,278 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,286 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 16 [2021-06-06 00:13:38,287 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,294 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,294 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 31 treesize of output 19 [2021-06-06 00:13:38,295 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,309 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:38,309 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-06 00:13:38,310 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,318 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:38,319 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,326 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:38,327 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,341 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:38,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 35 [2021-06-06 00:13:38,343 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,359 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:38,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:38,361 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,378 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:38,379 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 26 treesize of output 28 [2021-06-06 00:13:38,380 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,394 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:38,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:38,398 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,406 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-06 00:13:38,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 treesize of output 19 [2021-06-06 00:13:38,407 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,424 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:38,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:38,427 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,442 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:38,443 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:13:38,444 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,461 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:38,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:38,464 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:38,554 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:38,568 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 00:13:38,568 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:247 [2021-06-06 00:13:38,742 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-06 00:13:38,848 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 00:13:38,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742851315] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:38,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:38,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:13:38,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981261241] [2021-06-06 00:13:38,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:13:38,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:38,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:13:38,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:13:38,849 INFO L87 Difference]: Start difference. First operand 1849 states and 6305 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 00:13:39,675 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2021-06-06 00:13:39,806 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-06 00:13:39,952 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-06-06 00:13:40,319 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-06-06 00:13:40,484 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-06-06 00:13:40,709 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2021-06-06 00:13:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:40,741 INFO L93 Difference]: Finished difference Result 2674 states and 8821 transitions. [2021-06-06 00:13:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:13:40,742 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 00:13:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:40,745 INFO L225 Difference]: With dead ends: 2674 [2021-06-06 00:13:40,745 INFO L226 Difference]: Without dead ends: 2644 [2021-06-06 00:13:40,745 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2265.9ms TimeCoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:13:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-06-06 00:13:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1849. [2021-06-06 00:13:40,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 3.411796536796537) internal successors, (6305), 1848 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 6305 transitions. [2021-06-06 00:13:40,770 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 6305 transitions. Word has length 26 [2021-06-06 00:13:40,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:40,770 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 6305 transitions. [2021-06-06 00:13:40,771 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 00:13:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 6305 transitions. [2021-06-06 00:13:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:40,773 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:40,773 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 00:13:40,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2986 [2021-06-06 00:13:40,973 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:40,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:40,973 INFO L82 PathProgramCache]: Analyzing trace with hash 436254142, now seen corresponding path program 43 times [2021-06-06 00:13:40,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:40,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993805519] [2021-06-06 00:13:40,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:41,258 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 00:13:41,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:41,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993805519] [2021-06-06 00:13:41,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993805519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:41,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900192299] [2021-06-06 00:13:41,259 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 00:13:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:13:41,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:41,558 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_238], 3=[A, v_prenex_240, v_prenex_236]} [2021-06-06 00:13:41,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:41,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:41,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:41,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:41,571 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:41,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:41,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:41,577 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:41,705 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2021-06-06 00:13:41,705 INFO L628 ElimStorePlain]: treesize reduction 158, result has 46.4 percent of original size [2021-06-06 00:13:41,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:41,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:41,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:41,711 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:41,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:41,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:41,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 00:13:41,757 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:41,795 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:41,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:41,799 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 11 treesize of output 7 [2021-06-06 00:13:41,800 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:41,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:41,837 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:13:41,837 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:335, output treesize:51 [2021-06-06 00:13:41,890 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 00:13:41,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900192299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:41,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:41,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:13:41,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639760751] [2021-06-06 00:13:41,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:41,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:41,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:41,891 INFO L87 Difference]: Start difference. First operand 1849 states and 6305 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 00:13:42,559 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-06-06 00:13:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:42,669 INFO L93 Difference]: Finished difference Result 2432 states and 8093 transitions. [2021-06-06 00:13:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:13:42,669 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 00:13:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:42,673 INFO L225 Difference]: With dead ends: 2432 [2021-06-06 00:13:42,673 INFO L226 Difference]: Without dead ends: 2402 [2021-06-06 00:13:42,673 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1015.5ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:13:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-06-06 00:13:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1851. [2021-06-06 00:13:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1850 states have (on average 3.4135135135135135) internal successors, (6315), 1850 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 6315 transitions. [2021-06-06 00:13:42,695 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 6315 transitions. Word has length 26 [2021-06-06 00:13:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:42,695 INFO L482 AbstractCegarLoop]: Abstraction has 1851 states and 6315 transitions. [2021-06-06 00:13:42,695 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 00:13:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 6315 transitions. [2021-06-06 00:13:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:42,697 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:42,697 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 00:13:42,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3035,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:42,897 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:42,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1514157122, now seen corresponding path program 44 times [2021-06-06 00:13:42,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:42,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385135237] [2021-06-06 00:13:42,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:43,181 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 00:13:43,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:43,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385135237] [2021-06-06 00:13:43,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385135237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:43,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894272480] [2021-06-06 00:13:43,181 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 00:13:43,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:43,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:43,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:13:43,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:43,525 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-06 00:13:43,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:43,735 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:43,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:43,736 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:43,754 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:43,754 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 21 treesize of output 25 [2021-06-06 00:13:43,757 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:43,901 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:13:43,902 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:43,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:43,923 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:13:43,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 33 [2021-06-06 00:13:43,924 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:43,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:43,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:43,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 37 [2021-06-06 00:13:43,941 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:44,210 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2021-06-06 00:13:44,211 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.7 percent of original size [2021-06-06 00:13:44,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:44,229 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:44,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:44,231 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:44,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:44,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:44,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:44,248 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:44,373 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:13:44,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:44,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:44,388 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:44,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:44,394 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:44,408 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:13:44,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:44,409 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:44,650 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-06-06 00:13:44,650 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size [2021-06-06 00:13:44,666 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 00:13:44,667 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:385, output treesize:286 [2021-06-06 00:13:44,854 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-06 00:13:44,941 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 00:13:44,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894272480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:44,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:44,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-06-06 00:13:44,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266471153] [2021-06-06 00:13:44,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:13:44,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:44,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:13:44,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:13:44,942 INFO L87 Difference]: Start difference. First operand 1851 states and 6315 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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 00:13:45,198 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-06 00:13:45,447 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-06-06 00:13:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:45,884 INFO L93 Difference]: Finished difference Result 2442 states and 8174 transitions. [2021-06-06 00:13:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:13:45,884 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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 26 [2021-06-06 00:13:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:45,887 INFO L225 Difference]: With dead ends: 2442 [2021-06-06 00:13:45,887 INFO L226 Difference]: Without dead ends: 2427 [2021-06-06 00:13:45,887 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1478.6ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-06-06 00:13:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-06-06 00:13:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1869. [2021-06-06 00:13:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 3.4095289079229123) internal successors, (6369), 1868 states have internal predecessors, (6369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 6369 transitions. [2021-06-06 00:13:45,909 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 6369 transitions. Word has length 26 [2021-06-06 00:13:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:45,909 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 6369 transitions. [2021-06-06 00:13:45,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 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 00:13:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 6369 transitions. [2021-06-06 00:13:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:45,911 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:45,912 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 00:13:46,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3046,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:46,112 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:46,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:46,112 INFO L82 PathProgramCache]: Analyzing trace with hash -714815838, now seen corresponding path program 45 times [2021-06-06 00:13:46,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:46,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935222526] [2021-06-06 00:13:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:46,331 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 00:13:46,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:46,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935222526] [2021-06-06 00:13:46,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935222526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:46,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849353326] [2021-06-06 00:13:46,332 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) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:46,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:13:46,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:46,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:13:46,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:46,753 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:13:46,995 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-06 00:13:47,077 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_256, v_prenex_257], 2=[A, v_prenex_258]} [2021-06-06 00:13:47,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:47,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:13:47,083 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:47,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:47,088 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 00:13:47,089 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:47,216 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-06 00:13:47,217 INFO L628 ElimStorePlain]: treesize reduction 130, result has 54.7 percent of original size [2021-06-06 00:13:47,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:47,230 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 11 treesize of output 7 [2021-06-06 00:13:47,232 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:47,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:47,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:47,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:47,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:47,285 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:47,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:47,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:47,289 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:13:47,290 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:47,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:47,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:47,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:47,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:47,334 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:47,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:47,371 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:13:47,371 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:317, output treesize:51 [2021-06-06 00:13:47,423 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 00:13:47,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849353326] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:47,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:47,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-06 00:13:47,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664009502] [2021-06-06 00:13:47,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:47,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:47,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:47,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:47,423 INFO L87 Difference]: Start difference. First operand 1869 states and 6369 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 00:13:48,042 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:13:48,280 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2021-06-06 00:13:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:48,417 INFO L93 Difference]: Finished difference Result 1982 states and 6684 transitions. [2021-06-06 00:13:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:13:48,418 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 00:13:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:48,421 INFO L225 Difference]: With dead ends: 1982 [2021-06-06 00:13:48,421 INFO L226 Difference]: Without dead ends: 1967 [2021-06-06 00:13:48,421 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1406.9ms TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:13:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-06-06 00:13:48,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1890. [2021-06-06 00:13:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 3.4060349391212283) internal successors, (6434), 1889 states have internal predecessors, (6434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 6434 transitions. [2021-06-06 00:13:48,442 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 6434 transitions. Word has length 26 [2021-06-06 00:13:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:48,442 INFO L482 AbstractCegarLoop]: Abstraction has 1890 states and 6434 transitions. [2021-06-06 00:13:48,442 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 00:13:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 6434 transitions. [2021-06-06 00:13:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:48,444 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:48,444 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 00:13:48,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3107 [2021-06-06 00:13:48,645 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1962618678, now seen corresponding path program 46 times [2021-06-06 00:13:48,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:48,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776381973] [2021-06-06 00:13:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:48,851 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 00:13:48,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:48,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776381973] [2021-06-06 00:13:48,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776381973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:48,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920677284] [2021-06-06 00:13:48,851 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 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 00:13:48,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:13:48,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:48,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:13:48,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:49,286 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:13:49,353 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_270, v_prenex_264, v_prenex_266], 3=[v_prenex_271, v_prenex_273, v_prenex_265, v_prenex_268]} [2021-06-06 00:13:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,367 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 00:13:49,369 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:49,481 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-06 00:13:49,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,494 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 00:13:49,495 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:49,608 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:13:49,609 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,621 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:49,622 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 00:13:49,623 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:49,734 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:13:49,734 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,746 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 00:13:49,747 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:49,855 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-06 00:13:49,855 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,867 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,868 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 00:13:49,871 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:49,974 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:13:49,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:49,985 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:49,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 26 [2021-06-06 00:13:49,989 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:50,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:50,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:50,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:50,099 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:13:50,099 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 00:13:50,100 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:50,192 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:50,202 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:13:50,203 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 32 treesize of output 22 [2021-06-06 00:13:50,204 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:50,290 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:50,296 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 00:13:50,296 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:345, output treesize:194 [2021-06-06 00:13:50,479 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 00:13:50,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920677284] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:50,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:50,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:13:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574480205] [2021-06-06 00:13:50,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:50,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:50,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:50,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:50,480 INFO L87 Difference]: Start difference. First operand 1890 states and 6434 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 00:13:51,144 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-06 00:13:51,508 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-06-06 00:13:51,700 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-06-06 00:13:51,902 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2021-06-06 00:13:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:51,992 INFO L93 Difference]: Finished difference Result 2744 states and 9064 transitions. [2021-06-06 00:13:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:13:51,992 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 00:13:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:51,996 INFO L225 Difference]: With dead ends: 2744 [2021-06-06 00:13:51,996 INFO L226 Difference]: Without dead ends: 2714 [2021-06-06 00:13:51,996 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1881.5ms TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:13:51,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-06-06 00:13:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1888. [2021-06-06 00:13:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.408055113937467) internal successors, (6431), 1887 states have internal predecessors, (6431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6431 transitions. [2021-06-06 00:13:52,032 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6431 transitions. Word has length 26 [2021-06-06 00:13:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:52,032 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6431 transitions. [2021-06-06 00:13:52,032 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 00:13:52,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6431 transitions. [2021-06-06 00:13:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:52,035 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:52,035 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 00:13:52,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3122 [2021-06-06 00:13:52,235 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:52,236 INFO L82 PathProgramCache]: Analyzing trace with hash 272675774, now seen corresponding path program 47 times [2021-06-06 00:13:52,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:52,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90260212] [2021-06-06 00:13:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:52,542 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 00:13:52,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:52,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90260212] [2021-06-06 00:13:52,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90260212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:52,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147181434] [2021-06-06 00:13:52,543 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 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-06 00:13:52,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:13:52,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:52,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:13:52,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:52,944 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-06 00:13:53,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,046 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,046 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 00:13:53,050 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,060 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:53,060 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 00:13:53,061 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,185 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-06 00:13:53,185 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,197 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,198 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 00:13:53,200 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,217 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 00:13:53,218 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,324 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:13:53,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,336 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,336 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 00:13:53,339 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,348 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:53,349 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 00:13:53,350 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,448 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,459 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:53,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:53,461 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:53,469 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:53,470 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:53,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:53,578 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:13:53,578 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:333, output treesize:174 [2021-06-06 00:13:53,749 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 00:13:53,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147181434] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:53,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:53,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:13:53,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336964516] [2021-06-06 00:13:53,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:53,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:53,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:53,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:53,750 INFO L87 Difference]: Start difference. First operand 1888 states and 6431 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 00:13:54,556 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-06 00:13:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:54,607 INFO L93 Difference]: Finished difference Result 2422 states and 8105 transitions. [2021-06-06 00:13:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-06 00:13:54,607 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 00:13:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:54,610 INFO L225 Difference]: With dead ends: 2422 [2021-06-06 00:13:54,610 INFO L226 Difference]: Without dead ends: 2397 [2021-06-06 00:13:54,611 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1241.4ms TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:13:54,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-06-06 00:13:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1888. [2021-06-06 00:13:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.4101748807631163) internal successors, (6435), 1887 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6435 transitions. [2021-06-06 00:13:54,632 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6435 transitions. Word has length 26 [2021-06-06 00:13:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:54,633 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6435 transitions. [2021-06-06 00:13:54,633 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 00:13:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6435 transitions. [2021-06-06 00:13:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:54,635 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:54,635 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 00:13:54,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3139 [2021-06-06 00:13:54,837 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1537750790, now seen corresponding path program 48 times [2021-06-06 00:13:54,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:54,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239647829] [2021-06-06 00:13:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:55,120 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 00:13:55,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:55,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239647829] [2021-06-06 00:13:55,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239647829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:55,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231096133] [2021-06-06 00:13:55,120 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 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 00:13:55,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:13:55,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:55,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:13:55,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,324 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,324 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 00:13:55,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,334 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,334 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 26 treesize of output 16 [2021-06-06 00:13:55,335 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,343 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,343 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 00:13:55,344 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,354 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:55,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:55,356 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:55,367 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 00:13:55,370 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:55,382 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 00:13:55,383 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,391 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,391 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 00:13:55,392 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,402 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:55,402 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 24 [2021-06-06 00:13:55,405 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,416 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:55,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:55,418 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,427 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,427 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 36 treesize of output 22 [2021-06-06 00:13:55,428 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,436 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,437 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 00:13:55,437 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,445 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,446 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 00:13:55,446 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,457 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:55,457 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 21 treesize of output 17 [2021-06-06 00:13:55,459 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,472 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:55,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:13:55,474 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,486 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:13:55,486 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 00:13:55,488 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:55,494 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-06 00:13:55,494 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 00:13:55,495 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:55,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:55,575 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:13:55,575 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-06 00:13:55,759 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 00:13:55,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231096133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:55,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:55,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:13:55,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317048630] [2021-06-06 00:13:55,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:13:55,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:55,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:13:55,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:13:55,760 INFO L87 Difference]: Start difference. First operand 1888 states and 6435 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 00:13:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:56,527 INFO L93 Difference]: Finished difference Result 2430 states and 8144 transitions. [2021-06-06 00:13:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:13:56,528 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 00:13:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:56,531 INFO L225 Difference]: With dead ends: 2430 [2021-06-06 00:13:56,531 INFO L226 Difference]: Without dead ends: 2415 [2021-06-06 00:13:56,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 983.7ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:13:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2021-06-06 00:13:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 1888. [2021-06-06 00:13:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.4101748807631163) internal successors, (6435), 1887 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6435 transitions. [2021-06-06 00:13:56,558 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6435 transitions. Word has length 26 [2021-06-06 00:13:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:56,558 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6435 transitions. [2021-06-06 00:13:56,558 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 00:13:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6435 transitions. [2021-06-06 00:13:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:56,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:56,560 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 00:13:56,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3172,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:56,761 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:56,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1872442310, now seen corresponding path program 55 times [2021-06-06 00:13:56,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:56,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103219733] [2021-06-06 00:13:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:57,178 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 00:13:57,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:57,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103219733] [2021-06-06 00:13:57,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103219733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:57,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967087071] [2021-06-06 00:13:57,179 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 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 00:13:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:57,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:13:57,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,662 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-06 00:13:57,662 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,669 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 00:13:57,669 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:13:57,676 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,682 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 00:13:57,683 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,689 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 00:13:57,690 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:13:57,697 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,704 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 00:13:57,704 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,711 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:13:57,711 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,717 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 00:13:57,718 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,725 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 00:13:57,725 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,732 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 37 treesize of output 19 [2021-06-06 00:13:57,732 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,738 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 00:13:57,739 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,745 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-06 00:13:57,745 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:13:57,751 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:57,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:57,754 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 00:13:57,754 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:57,776 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-06 00:13:57,777 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 00:13:57,777 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:13:57,806 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 00:13:57,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967087071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:57,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:57,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:13:57,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564997510] [2021-06-06 00:13:57,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:13:57,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:13:57,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:13:57,807 INFO L87 Difference]: Start difference. First operand 1888 states and 6435 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 00:13:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:13:58,464 INFO L93 Difference]: Finished difference Result 2457 states and 7898 transitions. [2021-06-06 00:13:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:13:58,464 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 00:13:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:13:58,468 INFO L225 Difference]: With dead ends: 2457 [2021-06-06 00:13:58,468 INFO L226 Difference]: Without dead ends: 2420 [2021-06-06 00:13:58,468 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 959.0ms TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:13:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-06-06 00:13:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1914. [2021-06-06 00:13:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 3.410350235232619) internal successors, (6524), 1913 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:13:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 6524 transitions. [2021-06-06 00:13:58,504 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 6524 transitions. Word has length 26 [2021-06-06 00:13:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:13:58,505 INFO L482 AbstractCegarLoop]: Abstraction has 1914 states and 6524 transitions. [2021-06-06 00:13:58,505 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 00:13:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 6524 transitions. [2021-06-06 00:13:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:13:58,507 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:13:58,507 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 00:13:58,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3189,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:13:58,707 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:13:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:13:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash -804567746, now seen corresponding path program 56 times [2021-06-06 00:13:58,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:13:58,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295138635] [2021-06-06 00:13:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:13:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:13:58,989 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 00:13:58,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:13:58,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295138635] [2021-06-06 00:13:58,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295138635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:58,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401608564] [2021-06-06 00:13:58,989 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 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 00:13:59,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:13:59,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:13:59,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:13:59,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:13:59,245 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-06 00:13:59,292 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_283, v_prenex_285], 6=[A, v_prenex_287]} [2021-06-06 00:13:59,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:59,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:59,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:59,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 32 treesize of output 13 [2021-06-06 00:13:59,300 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:59,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:59,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:59,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:59,305 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:59,410 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2021-06-06 00:13:59,411 INFO L628 ElimStorePlain]: treesize reduction 166, result has 44.9 percent of original size [2021-06-06 00:13:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:59,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-06 00:13:59,416 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:59,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:59,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:59,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:59,452 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:59,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:59,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:13:59,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:13:59,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:13:59,486 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:13:59,511 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:13:59,514 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 00:13:59,514 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:365, output treesize:33 [2021-06-06 00:13:59,554 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 00:13:59,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401608564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:13:59,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:13:59,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-06 00:13:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710887564] [2021-06-06 00:13:59,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:13:59,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:13:59,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:13:59,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:13:59,555 INFO L87 Difference]: Start difference. First operand 1914 states and 6524 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) 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 00:14:00,431 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-06 00:14:00,590 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-06 00:14:00,731 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-06-06 00:14:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:00,842 INFO L93 Difference]: Finished difference Result 2392 states and 7936 transitions. [2021-06-06 00:14:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:14:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) 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 26 [2021-06-06 00:14:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:00,846 INFO L225 Difference]: With dead ends: 2392 [2021-06-06 00:14:00,846 INFO L226 Difference]: Without dead ends: 2346 [2021-06-06 00:14:00,846 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1352.4ms TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:14:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-06-06 00:14:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1910. [2021-06-06 00:14:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 3.4038763750654795) internal successors, (6498), 1909 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 6498 transitions. [2021-06-06 00:14:00,871 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 6498 transitions. Word has length 26 [2021-06-06 00:14:00,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:00,871 INFO L482 AbstractCegarLoop]: Abstraction has 1910 states and 6498 transitions. [2021-06-06 00:14:00,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) 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 00:14:00,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 6498 transitions. [2021-06-06 00:14:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:00,873 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:00,873 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 00:14:01,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3303 [2021-06-06 00:14:01,074 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:01,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1833133118, now seen corresponding path program 57 times [2021-06-06 00:14:01,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:01,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725246585] [2021-06-06 00:14:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:01,412 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 00:14:01,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:01,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725246585] [2021-06-06 00:14:01,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725246585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:01,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981871158] [2021-06-06 00:14:01,412 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 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 00:14:01,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:14:01,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:01,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:01,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:01,820 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-06 00:14:02,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,108 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-06 00:14:02,109 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 00:14:02,112 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:02,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,138 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:14:02,139 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 28 treesize of output 30 [2021-06-06 00:14:02,142 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:02,486 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-06-06 00:14:02,486 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:02,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,521 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:14:02,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:02,524 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:02,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,548 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:14:02,548 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 00:14:02,550 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:02,888 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-06 00:14:02,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:02,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,921 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:02,921 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-06 00:14:02,926 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:02,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:02,941 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:14:02,941 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 00:14:02,942 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:03,237 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-06 00:14:03,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:03,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,270 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:14:03,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:03,272 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:03,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,295 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:14:03,295 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 34 treesize of output 28 [2021-06-06 00:14:03,296 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:03,593 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:14:03,594 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:03,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:03,624 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 00:14:03,629 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:03,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:03,657 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:14:03,657 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 39 treesize of output 35 [2021-06-06 00:14:03,660 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:04,427 WARN L205 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 124 [2021-06-06 00:14:04,427 INFO L628 ElimStorePlain]: treesize reduction 40, result has 93.4 percent of original size [2021-06-06 00:14:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,457 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:14:04,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:04,460 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:04,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,473 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:14:04,473 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 1 [2021-06-06 00:14:04,473 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:04,693 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:14:04,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:04,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,732 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:14:04,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:04,734 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:04,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:04,756 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:14:04,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:04,760 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:05,125 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2021-06-06 00:14:05,125 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.7 percent of original size [2021-06-06 00:14:05,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:05,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:05,150 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-06 00:14:05,150 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 00:14:05,152 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:05,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:05,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:05,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:05,172 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 00:14:05,178 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:05,341 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-06 00:14:05,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:05,352 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 00:14:05,352 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:801, output treesize:348 [2021-06-06 00:14:05,502 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2021-06-06 00:14:05,526 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 00:14:05,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981871158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:05,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:05,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-06-06 00:14:05,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263196305] [2021-06-06 00:14:05,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:14:05,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:05,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:14:05,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:14:05,527 INFO L87 Difference]: Start difference. First operand 1910 states and 6498 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 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 00:14:06,679 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-06 00:14:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:07,001 INFO L93 Difference]: Finished difference Result 2172 states and 7282 transitions. [2021-06-06 00:14:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:14:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 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 26 [2021-06-06 00:14:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:07,005 INFO L225 Difference]: With dead ends: 2172 [2021-06-06 00:14:07,005 INFO L226 Difference]: Without dead ends: 2157 [2021-06-06 00:14:07,005 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1577.6ms TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:14:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2021-06-06 00:14:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1922. [2021-06-06 00:14:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 3.407600208224883) internal successors, (6546), 1921 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 6546 transitions. [2021-06-06 00:14:07,029 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 6546 transitions. Word has length 26 [2021-06-06 00:14:07,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:07,029 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 6546 transitions. [2021-06-06 00:14:07,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 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 00:14:07,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 6546 transitions. [2021-06-06 00:14:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:07,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:07,031 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 00:14:07,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3317,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:07,232 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:07,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:07,232 INFO L82 PathProgramCache]: Analyzing trace with hash 179857598, now seen corresponding path program 49 times [2021-06-06 00:14:07,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:07,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688823309] [2021-06-06 00:14:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:07,636 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 00:14:07,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:07,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688823309] [2021-06-06 00:14:07,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688823309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:07,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018293336] [2021-06-06 00:14:07,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:07,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:07,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:07,999 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-06 00:14:08,028 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_307, v_prenex_309]} [2021-06-06 00:14:08,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:08,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 00:14:08,033 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:08,134 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-06 00:14:08,134 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-06 00:14:08,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:08,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:08,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:08,140 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 28 treesize of output 16 [2021-06-06 00:14:08,140 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:08,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:08,144 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 21 treesize of output 13 [2021-06-06 00:14:08,145 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:08,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:08,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:08,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:08,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:08,185 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:08,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:08,219 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:14:08,219 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-06 00:14:08,269 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 00:14:08,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018293336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:08,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:08,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:14:08,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299401858] [2021-06-06 00:14:08,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:14:08,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:08,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:14:08,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:08,270 INFO L87 Difference]: Start difference. First operand 1922 states and 6546 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 00:14:08,828 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-06-06 00:14:09,149 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-06 00:14:09,300 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-06 00:14:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:09,461 INFO L93 Difference]: Finished difference Result 2493 states and 8257 transitions. [2021-06-06 00:14:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:14:09,461 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 00:14:09,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:09,465 INFO L225 Difference]: With dead ends: 2493 [2021-06-06 00:14:09,465 INFO L226 Difference]: Without dead ends: 2478 [2021-06-06 00:14:09,465 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1487.5ms TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:14:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-06-06 00:14:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 1933. [2021-06-06 00:14:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 3.4078674948240164) internal successors, (6584), 1932 states have internal predecessors, (6584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 6584 transitions. [2021-06-06 00:14:09,488 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 6584 transitions. Word has length 26 [2021-06-06 00:14:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:09,488 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 6584 transitions. [2021-06-06 00:14:09,488 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 00:14:09,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 6584 transitions. [2021-06-06 00:14:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:09,490 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:09,490 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 00:14:09,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3386,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:09,691 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1730239162, now seen corresponding path program 58 times [2021-06-06 00:14:09,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:09,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218448725] [2021-06-06 00:14:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:09,944 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 00:14:09,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:09,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218448725] [2021-06-06 00:14:09,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218448725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:09,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231689706] [2021-06-06 00:14:09,944 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 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 00:14:09,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:09,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:09,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:09,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:10,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,470 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 00:14:10,471 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,478 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 00:14:10,478 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,485 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 00:14:10,485 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:10,492 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,498 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 00:14:10,499 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,506 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 00:14:10,507 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,514 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:14:10,514 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,521 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-06 00:14:10,522 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:10,529 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,536 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 00:14:10,537 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,544 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 39 treesize of output 16 [2021-06-06 00:14:10,545 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,551 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 00:14:10,552 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,558 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 00:14:10,559 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,565 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:14:10,566 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:10,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:10,569 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 00:14:10,570 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:10,594 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-06 00:14:10,595 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 00:14:10,595 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:14:10,622 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 00:14:10,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231689706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:10,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:10,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 00:14:10,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871954169] [2021-06-06 00:14:10,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:14:10,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:14:10,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:10,623 INFO L87 Difference]: Start difference. First operand 1933 states and 6584 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 00:14:11,099 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-06-06 00:14:11,413 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-06 00:14:11,920 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-06 00:14:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:12,291 INFO L93 Difference]: Finished difference Result 3085 states and 9838 transitions. [2021-06-06 00:14:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:14:12,292 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 00:14:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:12,295 INFO L225 Difference]: With dead ends: 3085 [2021-06-06 00:14:12,295 INFO L226 Difference]: Without dead ends: 3042 [2021-06-06 00:14:12,295 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1610.6ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-06 00:14:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-06-06 00:14:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2025. [2021-06-06 00:14:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2024 states have (on average 3.4234189723320156) internal successors, (6929), 2024 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 6929 transitions. [2021-06-06 00:14:12,321 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 6929 transitions. Word has length 26 [2021-06-06 00:14:12,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:12,321 INFO L482 AbstractCegarLoop]: Abstraction has 2025 states and 6929 transitions. [2021-06-06 00:14:12,321 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 00:14:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 6929 transitions. [2021-06-06 00:14:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:12,324 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:12,324 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 00:14:12,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3395 [2021-06-06 00:14:12,524 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1769727974, now seen corresponding path program 50 times [2021-06-06 00:14:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:12,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568672954] [2021-06-06 00:14:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:12,916 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 00:14:12,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:12,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568672954] [2021-06-06 00:14:12,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568672954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:12,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463052400] [2021-06-06 00:14:12,916 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 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 00:14:12,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:12,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:12,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 00:14:12,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:13,420 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:14:13,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:14,004 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:14:14,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:14,006 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:14,155 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-06 00:14:14,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:14,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 35 [2021-06-06 00:14:14,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:14,331 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-06 00:14:14,331 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:14,356 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:14:14,356 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 21 treesize of output 25 [2021-06-06 00:14:14,359 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:14,507 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-06 00:14:14,507 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:14,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 35 [2021-06-06 00:14:14,530 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:14,675 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-06 00:14:14,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:14,697 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:14:14,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:14,698 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:14,841 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-06 00:14:14,841 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:14,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:14,863 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:14:14,864 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 28 treesize of output 28 [2021-06-06 00:14:14,867 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:15,005 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-06 00:14:15,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:15,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:15,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:15,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:15,029 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:15,170 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-06 00:14:15,171 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:15,193 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:14:15,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:15,194 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:15,326 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:14:15,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:15,349 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 00:14:15,349 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:381, output treesize:513 [2021-06-06 00:14:15,688 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-06 00:14:15,947 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-06 00:14:16,060 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 00:14:16,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463052400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:16,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:16,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-06 00:14:16,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142835956] [2021-06-06 00:14:16,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:14:16,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:14:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:14:16,061 INFO L87 Difference]: Start difference. First operand 2025 states and 6929 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 00:14:16,933 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-06-06 00:14:17,664 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-06-06 00:14:18,293 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-06-06 00:14:18,539 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-06-06 00:14:19,049 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 120 [2021-06-06 00:14:19,544 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2021-06-06 00:14:20,039 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2021-06-06 00:14:20,552 WARN L205 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2021-06-06 00:14:20,943 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2021-06-06 00:14:21,485 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 140 [2021-06-06 00:14:21,831 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-06-06 00:14:22,295 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2021-06-06 00:14:22,749 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-06-06 00:14:23,039 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2021-06-06 00:14:23,630 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2021-06-06 00:14:23,936 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 42 [2021-06-06 00:14:24,368 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 57 [2021-06-06 00:14:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:24,475 INFO L93 Difference]: Finished difference Result 2870 states and 9420 transitions. [2021-06-06 00:14:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-06 00:14:24,475 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 00:14:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:24,479 INFO L225 Difference]: With dead ends: 2870 [2021-06-06 00:14:24,479 INFO L226 Difference]: Without dead ends: 2855 [2021-06-06 00:14:24,479 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 8702.5ms TimeCoverageRelationStatistics Valid=408, Invalid=2142, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:14:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-06-06 00:14:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2033. [2021-06-06 00:14:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 3.4247047244094486) internal successors, (6959), 2032 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 6959 transitions. [2021-06-06 00:14:24,506 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 6959 transitions. Word has length 26 [2021-06-06 00:14:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:24,506 INFO L482 AbstractCegarLoop]: Abstraction has 2033 states and 6959 transitions. [2021-06-06 00:14:24,506 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 00:14:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 6959 transitions. [2021-06-06 00:14:24,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:24,508 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:24,508 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 00:14:24,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3501,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:24,708 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:24,709 INFO L82 PathProgramCache]: Analyzing trace with hash 719147274, now seen corresponding path program 51 times [2021-06-06 00:14:24,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:24,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247560285] [2021-06-06 00:14:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:24,957 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-06 00:14:25,124 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 00:14:25,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:25,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247560285] [2021-06-06 00:14:25,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247560285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:25,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817022922] [2021-06-06 00:14:25,124 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 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 00:14:25,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:14:25,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:25,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:25,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:25,459 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-06 00:14:25,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:25,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:25,511 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 00:14:25,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:25,633 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-06 00:14:25,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:25,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:25,645 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:14:25,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:25,647 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:25,752 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:14:25,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:25,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:25,764 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:14:25,765 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 00:14:25,766 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:25,868 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-06 00:14:25,868 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:25,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:25,880 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:14:25,880 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 28 treesize of output 20 [2021-06-06 00:14:25,881 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:25,982 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:14:25,982 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:25,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:25,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:25,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:25,998 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:26,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:26,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,105 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 26 treesize of output 24 [2021-06-06 00:14:26,107 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:26,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:26,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,211 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 00:14:26,214 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:26,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:26,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,325 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 28 treesize of output 24 [2021-06-06 00:14:26,328 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:26,417 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:26,424 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 00:14:26,424 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-06 00:14:26,593 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 00:14:26,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817022922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:26,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:26,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:14:26,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86760567] [2021-06-06 00:14:26,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:14:26,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:26,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:14:26,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:26,594 INFO L87 Difference]: Start difference. First operand 2033 states and 6959 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 00:14:26,970 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-06 00:14:27,422 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2021-06-06 00:14:27,898 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-06 00:14:28,043 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-06-06 00:14:28,260 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-06 00:14:28,446 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-06-06 00:14:28,798 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-06 00:14:28,988 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-06 00:14:29,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:29,107 INFO L93 Difference]: Finished difference Result 2982 states and 9848 transitions. [2021-06-06 00:14:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:14:29,107 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 00:14:29,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:29,111 INFO L225 Difference]: With dead ends: 2982 [2021-06-06 00:14:29,111 INFO L226 Difference]: Without dead ends: 2967 [2021-06-06 00:14:29,111 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2675.7ms TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:14:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-06-06 00:14:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2028. [2021-06-06 00:14:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 3.4257523433645782) internal successors, (6944), 2027 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 6944 transitions. [2021-06-06 00:14:29,139 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 6944 transitions. Word has length 26 [2021-06-06 00:14:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:29,139 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 6944 transitions. [2021-06-06 00:14:29,139 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 00:14:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 6944 transitions. [2021-06-06 00:14:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:29,142 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:29,142 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 00:14:29,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3567 [2021-06-06 00:14:29,342 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1956232686, now seen corresponding path program 59 times [2021-06-06 00:14:29,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:29,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299985160] [2021-06-06 00:14:29,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:29,592 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 00:14:29,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:29,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299985160] [2021-06-06 00:14:29,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299985160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:29,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930885631] [2021-06-06 00:14:29,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:29,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:14:29,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:29,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:14:29,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:30,045 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-06 00:14:30,454 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-06-06 00:14:30,687 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2021-06-06 00:14:30,908 INFO L446 ElimStorePlain]: Different costs {20=[v_prenex_385], 27=[A]} [2021-06-06 00:14:30,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:30,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,918 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 00:14:30,918 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:30,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:30,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:30,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:30,929 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:30,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:30,939 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:30,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:30,947 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 00:14:30,948 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:31,075 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-06 00:14:31,075 INFO L628 ElimStorePlain]: treesize reduction 114, result has 56.3 percent of original size [2021-06-06 00:14:31,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:31,080 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 00:14:31,081 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:31,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:31,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:31,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:31,086 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:31,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:31,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:14:31,132 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:399, output treesize:89 [2021-06-06 00:14:31,208 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 00:14:31,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930885631] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:31,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:31,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 18 [2021-06-06 00:14:31,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953566648] [2021-06-06 00:14:31,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:14:31,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:14:31,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:14:31,208 INFO L87 Difference]: Start difference. First operand 2028 states and 6944 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 00:14:31,990 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:14:32,422 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-06-06 00:14:32,626 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:14:32,985 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 71 [2021-06-06 00:14:33,362 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2021-06-06 00:14:33,666 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2021-06-06 00:14:34,061 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2021-06-06 00:14:34,440 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2021-06-06 00:14:34,742 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 47 [2021-06-06 00:14:35,166 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2021-06-06 00:14:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:35,276 INFO L93 Difference]: Finished difference Result 3633 states and 11658 transitions. [2021-06-06 00:14:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:14:35,277 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 26 [2021-06-06 00:14:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:35,282 INFO L225 Difference]: With dead ends: 3633 [2021-06-06 00:14:35,282 INFO L226 Difference]: Without dead ends: 3546 [2021-06-06 00:14:35,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 4426.4ms TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:14:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-06-06 00:14:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2151. [2021-06-06 00:14:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 3.4288372093023254) internal successors, (7372), 2150 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 7372 transitions. [2021-06-06 00:14:35,321 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 7372 transitions. Word has length 26 [2021-06-06 00:14:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:35,321 INFO L482 AbstractCegarLoop]: Abstraction has 2151 states and 7372 transitions. [2021-06-06 00:14:35,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 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 00:14:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 7372 transitions. [2021-06-06 00:14:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:35,324 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:35,324 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 00:14:35,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3582 [2021-06-06 00:14:35,524 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:35,525 INFO L82 PathProgramCache]: Analyzing trace with hash -505085958, now seen corresponding path program 60 times [2021-06-06 00:14:35,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:35,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112342094] [2021-06-06 00:14:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:35,766 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 00:14:35,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:35,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112342094] [2021-06-06 00:14:35,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112342094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:35,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813831869] [2021-06-06 00:14:35,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:35,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:14:35,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:35,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:14:35,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,037 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:36,038 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 53 [2021-06-06 00:14:36,048 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-06 00:14:36,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,082 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:14:36,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 44 [2021-06-06 00:14:36,087 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,124 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:14:36,124 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 40 [2021-06-06 00:14:36,128 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,166 INFO L354 Elim1Store]: treesize reduction 10, result has 75.6 percent of original size [2021-06-06 00:14:36,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 49 [2021-06-06 00:14:36,171 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,199 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-06 00:14:36,200 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 27 [2021-06-06 00:14:36,201 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,219 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,220 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2021-06-06 00:14:36,220 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,239 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,239 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:14:36,239 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,258 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,259 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:14:36,259 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,277 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 1 [2021-06-06 00:14:36,278 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,296 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2021-06-06 00:14:36,297 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,316 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-06 00:14:36,317 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,334 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 1 [2021-06-06 00:14:36,335 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,353 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-06 00:14:36,353 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 00:14:36,353 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,381 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-06 00:14:36,381 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 27 treesize of output 20 [2021-06-06 00:14:36,382 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:36,401 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-06 00:14:36,401 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 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 1 [2021-06-06 00:14:36,402 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-06 00:14:36,406 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:36,504 INFO L628 ElimStorePlain]: treesize reduction 130, result has 42.2 percent of original size [2021-06-06 00:14:36,505 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-06 00:14:36,505 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:833, output treesize:95 [2021-06-06 00:14:36,686 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 00:14:36,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813831869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:36,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:36,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-06-06 00:14:36,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284292706] [2021-06-06 00:14:36,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:14:36,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:36,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:14:36,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:14:36,687 INFO L87 Difference]: Start difference. First operand 2151 states and 7372 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 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 00:14:37,987 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2021-06-06 00:14:38,355 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-06 00:14:38,565 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-06-06 00:14:38,692 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-06 00:14:38,893 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-06-06 00:14:39,167 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-06-06 00:14:39,601 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-06-06 00:14:39,786 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2021-06-06 00:14:40,085 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2021-06-06 00:14:40,250 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-06-06 00:14:40,569 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-06-06 00:14:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:40,681 INFO L93 Difference]: Finished difference Result 3952 states and 12614 transitions. [2021-06-06 00:14:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:14:40,682 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 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 00:14:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:40,687 INFO L225 Difference]: With dead ends: 3952 [2021-06-06 00:14:40,687 INFO L226 Difference]: Without dead ends: 3864 [2021-06-06 00:14:40,688 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 3640.3ms TimeCoverageRelationStatistics Valid=560, Invalid=2980, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:14:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2021-06-06 00:14:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 2137. [2021-06-06 00:14:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 3.431179775280899) internal successors, (7329), 2136 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 7329 transitions. [2021-06-06 00:14:40,730 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 7329 transitions. Word has length 26 [2021-06-06 00:14:40,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:40,731 INFO L482 AbstractCegarLoop]: Abstraction has 2137 states and 7329 transitions. [2021-06-06 00:14:40,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 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 00:14:40,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 7329 transitions. [2021-06-06 00:14:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:40,733 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:40,733 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 00:14:40,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3604 [2021-06-06 00:14:40,949 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:40,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1912368818, now seen corresponding path program 52 times [2021-06-06 00:14:40,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:40,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526648634] [2021-06-06 00:14:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:41,387 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 00:14:41,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:41,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526648634] [2021-06-06 00:14:41,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526648634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:41,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913214639] [2021-06-06 00:14:41,388 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 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 00:14:41,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:14:41,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:41,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:41,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:41,739 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:14:41,969 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_397, v_prenex_398]} [2021-06-06 00:14:41,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:41,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 00:14:41,975 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:42,074 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-06 00:14:42,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:42,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:42,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:42,079 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:42,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:42,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:42,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:42,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:42,125 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:14:42,126 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:42,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:42,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:42,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:42,130 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:42,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:42,165 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:14:42,166 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-06 00:14:42,218 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 00:14:42,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913214639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:42,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:42,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:14:42,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716105043] [2021-06-06 00:14:42,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:14:42,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:42,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:14:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:42,219 INFO L87 Difference]: Start difference. First operand 2137 states and 7329 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 00:14:43,067 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-06 00:14:43,233 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-06 00:14:43,598 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-06 00:14:43,809 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2021-06-06 00:14:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:43,937 INFO L93 Difference]: Finished difference Result 2703 states and 9088 transitions. [2021-06-06 00:14:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-06 00:14:43,937 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 00:14:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:43,940 INFO L225 Difference]: With dead ends: 2703 [2021-06-06 00:14:43,941 INFO L226 Difference]: Without dead ends: 2688 [2021-06-06 00:14:43,941 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2054.4ms TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:14:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-06-06 00:14:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2150. [2021-06-06 00:14:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 3.4290367612843182) internal successors, (7369), 2149 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:43,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 7369 transitions. [2021-06-06 00:14:43,965 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 7369 transitions. Word has length 26 [2021-06-06 00:14:43,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:43,965 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 7369 transitions. [2021-06-06 00:14:43,965 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 00:14:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 7369 transitions. [2021-06-06 00:14:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:43,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:43,968 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 00:14:44,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3639 [2021-06-06 00:14:44,168 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash 294836038, now seen corresponding path program 53 times [2021-06-06 00:14:44,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:44,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459662096] [2021-06-06 00:14:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:44,411 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-06 00:14:44,526 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-06-06 00:14:44,657 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 00:14:44,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:44,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459662096] [2021-06-06 00:14:44,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459662096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:44,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980933202] [2021-06-06 00:14:44,657 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 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 00:14:44,681 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:14:44,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:44,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-06 00:14:44,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:45,191 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-06 00:14:45,286 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_421, v_prenex_410, v_prenex_412], 6=[v_prenex_415, v_prenex_405, v_prenex_418, v_prenex_408]} [2021-06-06 00:14:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:45,313 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:14:45,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:45,314 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:45,663 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 156 [2021-06-06 00:14:45,664 INFO L628 ElimStorePlain]: treesize reduction 226, result has 61.6 percent of original size [2021-06-06 00:14:45,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:45,687 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:14:45,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:45,688 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:45,827 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-06-06 00:14:45,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:45,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:45,851 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-06 00:14:45,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:45,854 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:45,985 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-06 00:14:45,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:45,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:46,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:46,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 35 [2021-06-06 00:14:46,009 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:46,267 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2021-06-06 00:14:46,267 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.3 percent of original size [2021-06-06 00:14:46,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:46,284 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:46,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:46,290 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:46,411 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-06 00:14:46,412 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:46,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:46,429 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:46,430 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-06 00:14:46,435 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:46,668 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-06 00:14:46,669 INFO L628 ElimStorePlain]: treesize reduction 12, result has 96.0 percent of original size [2021-06-06 00:14:46,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:46,688 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:14:46,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:14:46,689 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:46,811 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-06 00:14:46,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:46,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:46,829 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-06 00:14:46,829 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-06 00:14:46,830 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:46,936 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-06 00:14:46,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:46,953 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 00:14:46,953 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:599, output treesize:334 [2021-06-06 00:14:47,149 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-06-06 00:14:47,242 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 00:14:47,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980933202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:47,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:47,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-06 00:14:47,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687059065] [2021-06-06 00:14:47,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-06 00:14:47,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:47,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-06 00:14:47,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:14:47,243 INFO L87 Difference]: Start difference. First operand 2150 states and 7369 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 00:14:47,848 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2021-06-06 00:14:48,305 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2021-06-06 00:14:48,514 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-06 00:14:48,840 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2021-06-06 00:14:49,045 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-06 00:14:49,408 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-06 00:14:49,649 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:14:50,071 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-06-06 00:14:50,420 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-06-06 00:14:50,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:50,494 INFO L93 Difference]: Finished difference Result 3064 states and 10226 transitions. [2021-06-06 00:14:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:14:50,494 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 00:14:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:50,499 INFO L225 Difference]: With dead ends: 3064 [2021-06-06 00:14:50,499 INFO L226 Difference]: Without dead ends: 3049 [2021-06-06 00:14:50,499 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 3581.2ms TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2021-06-06 00:14:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-06-06 00:14:50,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2147. [2021-06-06 00:14:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.428238583410997) internal successors, (7357), 2146 states have internal predecessors, (7357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7357 transitions. [2021-06-06 00:14:50,528 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7357 transitions. Word has length 26 [2021-06-06 00:14:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:50,528 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7357 transitions. [2021-06-06 00:14:50,528 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 00:14:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7357 transitions. [2021-06-06 00:14:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:50,531 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:50,531 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, 1, 1] [2021-06-06 00:14:50,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3649 [2021-06-06 00:14:50,731 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:50,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1962058946, now seen corresponding path program 54 times [2021-06-06 00:14:50,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:50,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164000442] [2021-06-06 00:14:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:51,086 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 00:14:51,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:51,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164000442] [2021-06-06 00:14:51,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164000442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:51,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390844289] [2021-06-06 00:14:51,086 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 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 00:14:51,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:14:51,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:51,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-06 00:14:51,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:51,454 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-06 00:14:51,504 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_426, v_prenex_425], 6=[A, v_prenex_427]} [2021-06-06 00:14:51,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,518 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:51,518 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 34 treesize of output 30 [2021-06-06 00:14:51,519 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,532 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:14:51,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-06-06 00:14:51,533 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:51,669 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-06 00:14:51,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:51,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,683 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:51,683 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 22 treesize of output 24 [2021-06-06 00:14:51,687 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:51,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,699 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:14:51,699 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 00:14:51,706 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:51,832 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-06 00:14:51,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:51,847 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:51,847 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 38 treesize of output 28 [2021-06-06 00:14:51,851 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:51,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:51,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,876 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:14:51,876 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 38 treesize of output 24 [2021-06-06 00:14:51,877 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:51,990 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:14:51,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:51,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:51,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:52,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:52,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-06-06 00:14:52,007 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:52,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:52,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:52,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:52,017 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 43 treesize of output 31 [2021-06-06 00:14:52,018 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:52,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:52,120 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:14:52,120 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:409, output treesize:246 [2021-06-06 00:14:52,286 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-06-06 00:14:52,371 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 00:14:52,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390844289] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:52,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:52,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:14:52,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298577152] [2021-06-06 00:14:52,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:14:52,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:52,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:14:52,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:52,372 INFO L87 Difference]: Start difference. First operand 2147 states and 7357 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 00:14:53,060 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-06-06 00:14:53,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:53,839 INFO L93 Difference]: Finished difference Result 2844 states and 9528 transitions. [2021-06-06 00:14:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-06 00:14:53,839 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 00:14:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:53,844 INFO L225 Difference]: With dead ends: 2844 [2021-06-06 00:14:53,844 INFO L226 Difference]: Without dead ends: 2819 [2021-06-06 00:14:53,844 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1795.7ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:14:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2021-06-06 00:14:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2143. [2021-06-06 00:14:53,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 2142 states have (on average 3.429971988795518) internal successors, (7347), 2142 states have internal predecessors, (7347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 7347 transitions. [2021-06-06 00:14:53,874 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 7347 transitions. Word has length 26 [2021-06-06 00:14:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:53,874 INFO L482 AbstractCegarLoop]: Abstraction has 2143 states and 7347 transitions. [2021-06-06 00:14:53,874 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 00:14:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 7347 transitions. [2021-06-06 00:14:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:53,876 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:53,876 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 00:14:54,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3695,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:54,077 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash 935709652, now seen corresponding path program 61 times [2021-06-06 00:14:54,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:54,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130319925] [2021-06-06 00:14:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:54,378 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 00:14:54,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:54,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130319925] [2021-06-06 00:14:54,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130319925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:54,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091980223] [2021-06-06 00:14:54,378 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 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 00:14:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:54,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:54,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:54,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,859 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 00:14:54,860 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,866 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 00:14:54,867 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,873 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 00:14:54,875 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,882 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 00:14:54,882 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,889 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 00:14:54,890 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,896 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 00:14:54,897 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,904 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 00:14:54,904 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,911 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 00:14:54,912 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:54,920 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,926 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 00:14:54,927 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,934 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 00:14:54,934 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,941 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 00:14:54,941 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,948 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 00:14:54,948 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,954 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 00:14:54,955 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:54,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:54,958 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 00:14:54,959 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:54,982 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-06 00:14:54,983 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 00:14:54,983 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-06 00:14:54,998 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 00:14:54,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091980223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:54,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:54,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-06 00:14:54,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231683991] [2021-06-06 00:14:54,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:14:54,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:14:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:14:54,999 INFO L87 Difference]: Start difference. First operand 2143 states and 7347 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 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 00:14:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:56,259 INFO L93 Difference]: Finished difference Result 2873 states and 9612 transitions. [2021-06-06 00:14:56,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:14:56,259 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 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 26 [2021-06-06 00:14:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:56,263 INFO L225 Difference]: With dead ends: 2873 [2021-06-06 00:14:56,263 INFO L226 Difference]: Without dead ends: 2851 [2021-06-06 00:14:56,264 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1243.9ms TimeCoverageRelationStatistics Valid=334, Invalid=1148, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:14:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-06-06 00:14:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2169. [2021-06-06 00:14:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 3.4321955719557193) internal successors, (7441), 2168 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 7441 transitions. [2021-06-06 00:14:56,292 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 7441 transitions. Word has length 26 [2021-06-06 00:14:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:56,292 INFO L482 AbstractCegarLoop]: Abstraction has 2169 states and 7441 transitions. [2021-06-06 00:14:56,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 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 00:14:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 7441 transitions. [2021-06-06 00:14:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:56,294 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:56,294 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 00:14:56,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3716 [2021-06-06 00:14:56,495 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1861203518, now seen corresponding path program 62 times [2021-06-06 00:14:56,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:56,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014402297] [2021-06-06 00:14:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:14:56,734 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 00:14:56,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:14:56,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014402297] [2021-06-06 00:14:56,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014402297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:56,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795780219] [2021-06-06 00:14:56,734 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 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 00:14:56,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:14:56,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:14:56,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:14:56,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:14:57,061 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-06 00:14:57,108 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_428, v_prenex_432], 5=[A, v_prenex_430]} [2021-06-06 00:14:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:57,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:57,116 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-06 00:14:57,118 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:57,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:57,124 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:57,203 INFO L628 ElimStorePlain]: treesize reduction 147, result has 42.6 percent of original size [2021-06-06 00:14:57,203 INFO L518 ElimStorePlain]: Eliminatee v_prenex_432 vanished before elimination [2021-06-06 00:14:57,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:57,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:57,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:14:57,209 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:57,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:57,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:14:57,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:14:57,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:14:57,240 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:14:57,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:14:57,265 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 00:14:57,265 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:314, output treesize:33 [2021-06-06 00:14:57,308 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 00:14:57,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795780219] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:14:57,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:14:57,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-06 00:14:57,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525857048] [2021-06-06 00:14:57,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:14:57,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:14:57,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:14:57,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:14:57,309 INFO L87 Difference]: Start difference. First operand 2169 states and 7441 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 00:14:58,751 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-06 00:14:59,007 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-06 00:14:59,155 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-06 00:14:59,286 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-06-06 00:14:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:14:59,509 INFO L93 Difference]: Finished difference Result 3222 states and 10652 transitions. [2021-06-06 00:14:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-06 00:14:59,509 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 00:14:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:14:59,514 INFO L225 Difference]: With dead ends: 3222 [2021-06-06 00:14:59,514 INFO L226 Difference]: Without dead ends: 3182 [2021-06-06 00:14:59,514 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 2244.4ms TimeCoverageRelationStatistics Valid=527, Invalid=1825, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:14:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2021-06-06 00:14:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 2156. [2021-06-06 00:14:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 3.432018561484919) internal successors, (7396), 2155 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:14:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 7396 transitions. [2021-06-06 00:14:59,542 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 7396 transitions. Word has length 26 [2021-06-06 00:14:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:14:59,542 INFO L482 AbstractCegarLoop]: Abstraction has 2156 states and 7396 transitions. [2021-06-06 00:14:59,542 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 00:14:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 7396 transitions. [2021-06-06 00:14:59,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:14:59,545 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:14:59,545 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 00:14:59,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3822,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:14:59,745 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:14:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:14:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1633671286, now seen corresponding path program 55 times [2021-06-06 00:14:59,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:14:59,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393760831] [2021-06-06 00:14:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:14:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:00,112 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 00:15:00,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:00,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393760831] [2021-06-06 00:15:00,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393760831] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:00,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874508826] [2021-06-06 00:15:00,113 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 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 00:15:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:00,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:15:00,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:00,553 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-06 00:15:00,802 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-06-06 00:15:00,853 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_443, v_prenex_444], 2=[A, v_prenex_445]} [2021-06-06 00:15:00,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:00,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 00:15:00,859 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:00,964 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-06-06 00:15:00,965 INFO L628 ElimStorePlain]: treesize reduction 54, result has 72.3 percent of original size [2021-06-06 00:15:00,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:00,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 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 00:15:00,969 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:01,013 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:01,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:15:01,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:15:01,017 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:01,058 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:01,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:01,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:15:01,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:15:01,063 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-06 00:15:01,064 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:01,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:01,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:15:01,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 00:15:01,068 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:01,100 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:01,102 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-06 00:15:01,102 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:207, output treesize:51 [2021-06-06 00:15:01,154 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 00:15:01,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874508826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:01,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:01,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:15:01,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422904425] [2021-06-06 00:15:01,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:15:01,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:01,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:15:01,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:15:01,154 INFO L87 Difference]: Start difference. First operand 2156 states and 7396 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 00:15:01,980 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-06 00:15:02,608 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2021-06-06 00:15:02,758 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-06-06 00:15:02,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:02,814 INFO L93 Difference]: Finished difference Result 2279 states and 7717 transitions. [2021-06-06 00:15:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-06 00:15:02,814 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 00:15:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:02,817 INFO L225 Difference]: With dead ends: 2279 [2021-06-06 00:15:02,817 INFO L226 Difference]: Without dead ends: 2264 [2021-06-06 00:15:02,818 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2208.8ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:15:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-06-06 00:15:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2159. [2021-06-06 00:15:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2158 states have (on average 3.4300278035217793) internal successors, (7402), 2158 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 7402 transitions. [2021-06-06 00:15:02,843 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 7402 transitions. Word has length 26 [2021-06-06 00:15:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:02,843 INFO L482 AbstractCegarLoop]: Abstraction has 2159 states and 7402 transitions. [2021-06-06 00:15:02,843 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 00:15:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 7402 transitions. [2021-06-06 00:15:02,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:15:02,846 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:02,846 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 00:15:03,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3836,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:03,053 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:03,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:03,053 INFO L82 PathProgramCache]: Analyzing trace with hash 16138506, now seen corresponding path program 56 times [2021-06-06 00:15:03,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:03,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38047334] [2021-06-06 00:15:03,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:03,402 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 00:15:03,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:03,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38047334] [2021-06-06 00:15:03,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38047334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:03,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490680108] [2021-06-06 00:15:03,403 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 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 00:15:03,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:03,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:03,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:15:03,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:03,850 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:15:03,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:03,909 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:03,909 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 00:15:03,911 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,041 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:15:04,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,054 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:04,054 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 00:15:04,055 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,169 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-06 00:15:04,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,181 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 00:15:04,184 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,287 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:15:04,287 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,301 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:04,301 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 00:15:04,303 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,414 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:15:04,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,429 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,430 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 00:15:04,431 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,534 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:15:04,534 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,546 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 00:15:04,548 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,662 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:15:04,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,673 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 00:15:04,676 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,766 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:04,776 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:15:04,777 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:04,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:04,868 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 00:15:04,868 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-06 00:15:05,083 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 00:15:05,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490680108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:05,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:05,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:15:05,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951205598] [2021-06-06 00:15:05,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:15:05,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:15:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:15:05,084 INFO L87 Difference]: Start difference. First operand 2159 states and 7402 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 00:15:05,400 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-06 00:15:05,883 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-06 00:15:06,307 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-06 00:15:06,914 WARN L205 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-06 00:15:07,277 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-06-06 00:15:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:07,525 INFO L93 Difference]: Finished difference Result 3021 states and 10110 transitions. [2021-06-06 00:15:07,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 00:15:07,526 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 00:15:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:07,530 INFO L225 Difference]: With dead ends: 3021 [2021-06-06 00:15:07,530 INFO L226 Difference]: Without dead ends: 3006 [2021-06-06 00:15:07,530 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2715.9ms TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:15:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-06-06 00:15:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2153. [2021-06-06 00:15:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 3.427973977695167) internal successors, (7377), 2152 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 7377 transitions. [2021-06-06 00:15:07,562 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 7377 transitions. Word has length 26 [2021-06-06 00:15:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:07,562 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 7377 transitions. [2021-06-06 00:15:07,562 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 00:15:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 7377 transitions. [2021-06-06 00:15:07,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:15:07,565 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:07,565 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 00:15:07,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3848 [2021-06-06 00:15:07,767 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2054210818, now seen corresponding path program 57 times [2021-06-06 00:15:07,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:07,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535706941] [2021-06-06 00:15:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:08,133 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 00:15:08,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:08,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535706941] [2021-06-06 00:15:08,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535706941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:08,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397759416] [2021-06-06 00:15:08,133 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 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 00:15:08,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:15:08,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:08,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-06 00:15:08,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:08,564 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_469], 3=[v_prenex_467, v_prenex_468]} [2021-06-06 00:15:08,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,577 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:08,577 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 33 treesize of output 27 [2021-06-06 00:15:08,578 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:08,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,589 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:08,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:15:08,591 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:08,738 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-06 00:15:08,738 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:08,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,752 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:08,752 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 00:15:08,753 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:08,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:08,763 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 00:15:08,765 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:08,892 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-06 00:15:08,892 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:08,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 26 [2021-06-06 00:15:08,910 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:08,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:08,922 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:15:08,922 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 32 treesize of output 22 [2021-06-06 00:15:08,923 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:09,039 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:15:09,039 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:09,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:09,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:09,052 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-06 00:15:09,052 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 00:15:09,054 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:09,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:09,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:09,064 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:09,064 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 00:15:09,067 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:09,183 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-06 00:15:09,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:09,189 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:15:09,189 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:365, output treesize:194 [2021-06-06 00:15:09,377 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 00:15:09,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397759416] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:09,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:09,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:15:09,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236479662] [2021-06-06 00:15:09,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:15:09,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:09,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:15:09,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:15:09,378 INFO L87 Difference]: Start difference. First operand 2153 states and 7377 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 00:15:10,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:10,653 INFO L93 Difference]: Finished difference Result 2848 states and 9544 transitions. [2021-06-06 00:15:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:15:10,653 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 00:15:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:10,657 INFO L225 Difference]: With dead ends: 2848 [2021-06-06 00:15:10,657 INFO L226 Difference]: Without dead ends: 2823 [2021-06-06 00:15:10,657 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1558.5ms TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:15:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-06-06 00:15:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2129. [2021-06-06 00:15:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 3.425751879699248) internal successors, (7290), 2128 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 7290 transitions. [2021-06-06 00:15:10,683 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 7290 transitions. Word has length 26 [2021-06-06 00:15:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:10,683 INFO L482 AbstractCegarLoop]: Abstraction has 2129 states and 7290 transitions. [2021-06-06 00:15:10,683 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 00:15:10,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 7290 transitions. [2021-06-06 00:15:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:15:10,685 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:10,685 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 00:15:10,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3865,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:10,887 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:10,887 INFO L82 PathProgramCache]: Analyzing trace with hash 243784254, now seen corresponding path program 58 times [2021-06-06 00:15:10,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:10,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150417266] [2021-06-06 00:15:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:11,160 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2021-06-06 00:15:11,291 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-06 00:15:11,395 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 00:15:11,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:11,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150417266] [2021-06-06 00:15:11,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150417266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:11,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037007095] [2021-06-06 00:15:11,396 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 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 00:15:11,419 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:11,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:11,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:15:11,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:11,741 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-06 00:15:11,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:11,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:11,863 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 00:15:11,864 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:11,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:11,874 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:11,875 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 00:15:11,876 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,005 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:15:12,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:12,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:15:12,020 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:12,030 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,030 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 00:15:12,031 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,145 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-06 00:15:12,145 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:12,158 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:12,158 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 28 treesize of output 20 [2021-06-06 00:15:12,159 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:12,168 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,168 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 00:15:12,173 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,291 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:15:12,291 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:12,308 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,308 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 16 treesize of output 18 [2021-06-06 00:15:12,311 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:12,321 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-06 00:15:12,321 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 21 treesize of output 17 [2021-06-06 00:15:12,323 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:12,428 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-06 00:15:12,428 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:12,434 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-06 00:15:12,434 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:341, output treesize:174 [2021-06-06 00:15:12,614 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 00:15:12,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037007095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:12,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:12,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-06 00:15:12,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490103175] [2021-06-06 00:15:12,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 00:15:12,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 00:15:12,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:15:12,615 INFO L87 Difference]: Start difference. First operand 2129 states and 7290 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 00:15:13,860 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-06 00:15:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:13,941 INFO L93 Difference]: Finished difference Result 2750 states and 9269 transitions. [2021-06-06 00:15:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:15:13,941 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 00:15:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:13,945 INFO L225 Difference]: With dead ends: 2750 [2021-06-06 00:15:13,945 INFO L226 Difference]: Without dead ends: 2735 [2021-06-06 00:15:13,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1634.6ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:15:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-06 00:15:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2129. [2021-06-06 00:15:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 3.425751879699248) internal successors, (7290), 2128 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 7290 transitions. [2021-06-06 00:15:13,974 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 7290 transitions. Word has length 26 [2021-06-06 00:15:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:13,974 INFO L482 AbstractCegarLoop]: Abstraction has 2129 states and 7290 transitions. [2021-06-06 00:15:13,974 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 00:15:13,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 7290 transitions. [2021-06-06 00:15:13,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-06 00:15:13,977 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:13,977 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 00:15:14,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3898,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:14,192 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1496131378, now seen corresponding path program 63 times [2021-06-06 00:15:14,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:14,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351382520] [2021-06-06 00:15:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:14,406 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2021-06-06 00:15:14,669 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 00:15:14,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:14,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351382520] [2021-06-06 00:15:14,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351382520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:14,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102013155] [2021-06-06 00:15:14,670 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 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 00:15:14,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:15:14,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:14,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-06 00:15:14,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:15,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,210 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-06 00:15:15,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:15:15,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,243 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:15:15,243 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 00:15:15,247 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,273 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:15:15,273 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 00:15:15,274 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,299 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-06 00:15:15,299 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 00:15:15,300 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,335 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-06 00:15:15,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:15:15,337 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,361 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-06 00:15:15,362 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-06 00:15:15,363 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:15,390 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 00:15:15,396 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,412 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,412 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 00:15:15,413 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,435 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:15:15,436 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 00:15:15,441 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,460 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:15:15,461 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,477 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,477 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 00:15:15,478 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,494 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,494 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 00:15:15,495 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,514 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,514 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 37 treesize of output 1 [2021-06-06 00:15:15,514 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,538 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-06 00:15:15,538 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 00:15:15,541 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,554 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,554 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 00:15:15,555 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:15:15,576 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-06 00:15:15,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:15:15,577 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:15:15,717 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2021-06-06 00:15:15,718 INFO L628 ElimStorePlain]: treesize reduction 140, result has 39.9 percent of original size [2021-06-06 00:15:15,720 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 00:15:15,720 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:83 [2021-06-06 00:15:15,835 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 00:15:15,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102013155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:15,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:15,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-06 00:15:15,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911913342] [2021-06-06 00:15:15,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-06 00:15:15,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-06 00:15:15,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:15:15,835 INFO L87 Difference]: Start difference. First operand 2129 states and 7290 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 00:15:18,164 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-06 00:15:18,457 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-06-06 00:15:18,671 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-06-06 00:15:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:18,777 INFO L93 Difference]: Finished difference Result 3313 states and 10903 transitions. [2021-06-06 00:15:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:15:18,778 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 00:15:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:18,783 INFO L225 Difference]: With dead ends: 3313 [2021-06-06 00:15:18,783 INFO L226 Difference]: Without dead ends: 3269 [2021-06-06 00:15:18,783 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2989.4ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:15:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-06-06 00:15:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2147. [2021-06-06 00:15:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.4221808014911463) internal successors, (7344), 2146 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7344 transitions. [2021-06-06 00:15:18,820 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7344 transitions. Word has length 26 [2021-06-06 00:15:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:18,820 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7344 transitions. [2021-06-06 00:15:18,820 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 00:15:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7344 transitions. [2021-06-06 00:15:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:18,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:18,822 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 00:15:19,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3931 [2021-06-06 00:15:19,023 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:19,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1868598568, now seen corresponding path program 59 times [2021-06-06 00:15:19,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:19,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190247100] [2021-06-06 00:15:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:19,067 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 00:15:19,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:19,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190247100] [2021-06-06 00:15:19,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190247100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:19,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704704551] [2021-06-06 00:15:19,067 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 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 00:15:19,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:15:19,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:19,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:19,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:19,192 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 00:15:19,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704704551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:19,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:19,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:15:19,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149229845] [2021-06-06 00:15:19,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:19,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:19,193 INFO L87 Difference]: Start difference. First operand 2147 states and 7344 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 00:15:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:20,182 INFO L93 Difference]: Finished difference Result 5131 states and 15966 transitions. [2021-06-06 00:15:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:15:20,182 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 00:15:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:20,190 INFO L225 Difference]: With dead ends: 5131 [2021-06-06 00:15:20,190 INFO L226 Difference]: Without dead ends: 5131 [2021-06-06 00:15:20,190 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 559.7ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:15:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2021-06-06 00:15:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 2340. [2021-06-06 00:15:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2339 states have (on average 3.469431380932022) internal successors, (8115), 2339 states have internal predecessors, (8115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:20,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 8115 transitions. [2021-06-06 00:15:20,237 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 8115 transitions. Word has length 28 [2021-06-06 00:15:20,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:20,237 INFO L482 AbstractCegarLoop]: Abstraction has 2340 states and 8115 transitions. [2021-06-06 00:15:20,237 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 00:15:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 8115 transitions. [2021-06-06 00:15:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:20,239 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:20,239 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 00:15:20,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4062,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:20,440 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:20,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:20,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1450049884, now seen corresponding path program 60 times [2021-06-06 00:15:20,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:20,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972383172] [2021-06-06 00:15:20,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:20,492 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 00:15:20,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:20,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972383172] [2021-06-06 00:15:20,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972383172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:20,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905045077] [2021-06-06 00:15:20,493 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 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 00:15:20,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:15:20,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:20,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:20,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:20,640 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 00:15:20,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905045077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:20,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:20,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:15:20,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830514908] [2021-06-06 00:15:20,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:15:20,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:20,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:15:20,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:15:20,641 INFO L87 Difference]: Start difference. First operand 2340 states and 8115 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 00:15:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:21,820 INFO L93 Difference]: Finished difference Result 6763 states and 20717 transitions. [2021-06-06 00:15:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:15:21,821 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 00:15:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:21,830 INFO L225 Difference]: With dead ends: 6763 [2021-06-06 00:15:21,831 INFO L226 Difference]: Without dead ends: 6763 [2021-06-06 00:15:21,831 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 734.4ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:15:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-06-06 00:15:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 2351. [2021-06-06 00:15:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2350 states have (on average 3.4761702127659575) internal successors, (8169), 2350 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 8169 transitions. [2021-06-06 00:15:21,887 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 8169 transitions. Word has length 28 [2021-06-06 00:15:21,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:21,887 INFO L482 AbstractCegarLoop]: Abstraction has 2351 states and 8169 transitions. [2021-06-06 00:15:21,887 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 00:15:21,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 8169 transitions. [2021-06-06 00:15:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:21,890 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:21,890 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 00:15:22,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4063 [2021-06-06 00:15:22,090 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash 2017001964, now seen corresponding path program 61 times [2021-06-06 00:15:22,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:22,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720670381] [2021-06-06 00:15:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:22,131 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 00:15:22,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:22,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720670381] [2021-06-06 00:15:22,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720670381] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:22,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973196751] [2021-06-06 00:15:22,131 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 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 00:15:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:22,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:22,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:22,283 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 00:15:22,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973196751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:22,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:22,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:15:22,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345099321] [2021-06-06 00:15:22,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:15:22,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:15:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:15:22,286 INFO L87 Difference]: Start difference. First operand 2351 states and 8169 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 00:15:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:23,453 INFO L93 Difference]: Finished difference Result 6150 states and 19231 transitions. [2021-06-06 00:15:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:15:23,453 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 00:15:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:23,461 INFO L225 Difference]: With dead ends: 6150 [2021-06-06 00:15:23,461 INFO L226 Difference]: Without dead ends: 6150 [2021-06-06 00:15:23,462 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 737.4ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-06 00:15:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-06-06 00:15:23,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 2299. [2021-06-06 00:15:23,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 3.4538729329852047) internal successors, (7937), 2298 states have internal predecessors, (7937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 7937 transitions. [2021-06-06 00:15:23,519 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 7937 transitions. Word has length 28 [2021-06-06 00:15:23,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:23,519 INFO L482 AbstractCegarLoop]: Abstraction has 2299 states and 7937 transitions. [2021-06-06 00:15:23,519 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 00:15:23,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 7937 transitions. [2021-06-06 00:15:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:23,522 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:23,522 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 00:15:23,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4064 [2021-06-06 00:15:23,733 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1095937010, now seen corresponding path program 62 times [2021-06-06 00:15:23,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:23,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889362940] [2021-06-06 00:15:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:23,773 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 00:15:23,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:23,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889362940] [2021-06-06 00:15:23,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889362940] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:23,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015275964] [2021-06-06 00:15:23,773 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 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 00:15:23,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:23,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:23,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:23,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:23,883 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 00:15:23,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015275964] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:23,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:23,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:15:23,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737105794] [2021-06-06 00:15:23,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:23,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:23,885 INFO L87 Difference]: Start difference. First operand 2299 states and 7937 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 00:15:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:25,082 INFO L93 Difference]: Finished difference Result 5206 states and 16106 transitions. [2021-06-06 00:15:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:15:25,082 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 00:15:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:25,089 INFO L225 Difference]: With dead ends: 5206 [2021-06-06 00:15:25,090 INFO L226 Difference]: Without dead ends: 5206 [2021-06-06 00:15:25,090 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 721.7ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:15:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2021-06-06 00:15:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 2309. [2021-06-06 00:15:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 3.450173310225303) internal successors, (7963), 2308 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 7963 transitions. [2021-06-06 00:15:25,134 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 7963 transitions. Word has length 28 [2021-06-06 00:15:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:25,134 INFO L482 AbstractCegarLoop]: Abstraction has 2309 states and 7963 transitions. [2021-06-06 00:15:25,134 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 00:15:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 7963 transitions. [2021-06-06 00:15:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:25,137 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:25,137 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 00:15:25,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4065 [2021-06-06 00:15:25,341 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1989400020, now seen corresponding path program 64 times [2021-06-06 00:15:25,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:25,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22233170] [2021-06-06 00:15:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:25,382 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 00:15:25,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:25,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22233170] [2021-06-06 00:15:25,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22233170] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:25,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371471177] [2021-06-06 00:15:25,382 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 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 00:15:25,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:25,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:25,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:25,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:25,491 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 00:15:25,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371471177] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:25,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:25,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:15:25,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409814332] [2021-06-06 00:15:25,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:25,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:25,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:25,492 INFO L87 Difference]: Start difference. First operand 2309 states and 7963 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 00:15:25,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:25,999 INFO L93 Difference]: Finished difference Result 4633 states and 14522 transitions. [2021-06-06 00:15:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:15:25,999 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 00:15:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:26,006 INFO L225 Difference]: With dead ends: 4633 [2021-06-06 00:15:26,006 INFO L226 Difference]: Without dead ends: 4633 [2021-06-06 00:15:26,007 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 299.8ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:15:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2021-06-06 00:15:26,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 2379. [2021-06-06 00:15:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2378 states have (on average 3.433978132884777) internal successors, (8166), 2378 states have internal predecessors, (8166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 8166 transitions. [2021-06-06 00:15:26,051 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 8166 transitions. Word has length 28 [2021-06-06 00:15:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:26,052 INFO L482 AbstractCegarLoop]: Abstraction has 2379 states and 8166 transitions. [2021-06-06 00:15:26,052 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 00:15:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 8166 transitions. [2021-06-06 00:15:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:26,055 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:26,055 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 00:15:26,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-06 00:15:26,255 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:26,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1848031388, now seen corresponding path program 63 times [2021-06-06 00:15:26,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:26,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334350178] [2021-06-06 00:15:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:26,286 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 00:15:26,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:26,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334350178] [2021-06-06 00:15:26,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334350178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:26,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300803568] [2021-06-06 00:15:26,286 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 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 00:15:26,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:15:26,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:26,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:15:26,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:26,389 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 00:15:26,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300803568] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:26,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:26,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:15:26,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201734003] [2021-06-06 00:15:26,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:15:26,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:26,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:15:26,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:15:26,390 INFO L87 Difference]: Start difference. First operand 2379 states and 8166 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 00:15:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:26,564 INFO L93 Difference]: Finished difference Result 3856 states and 12614 transitions. [2021-06-06 00:15:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:15:26,564 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 00:15:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:26,570 INFO L225 Difference]: With dead ends: 3856 [2021-06-06 00:15:26,570 INFO L226 Difference]: Without dead ends: 3832 [2021-06-06 00:15:26,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:15:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2021-06-06 00:15:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2739. [2021-06-06 00:15:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2738 states have (on average 3.50036523009496) internal successors, (9584), 2738 states have internal predecessors, (9584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 9584 transitions. [2021-06-06 00:15:26,615 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 9584 transitions. Word has length 28 [2021-06-06 00:15:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:26,615 INFO L482 AbstractCegarLoop]: Abstraction has 2739 states and 9584 transitions. [2021-06-06 00:15:26,615 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 00:15:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 9584 transitions. [2021-06-06 00:15:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:26,619 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:26,619 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 00:15:26,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-06 00:15:26,819 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1411062680, now seen corresponding path program 64 times [2021-06-06 00:15:26,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:26,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067608882] [2021-06-06 00:15:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:26,858 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 00:15:26,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:26,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067608882] [2021-06-06 00:15:26,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067608882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:26,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969204508] [2021-06-06 00:15:26,859 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 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 00:15:26,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:26,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:26,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:26,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:26,983 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 00:15:26,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969204508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:26,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:26,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:15:26,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363253926] [2021-06-06 00:15:26,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:26,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:26,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:26,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:26,984 INFO L87 Difference]: Start difference. First operand 2739 states and 9584 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 00:15:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:27,528 INFO L93 Difference]: Finished difference Result 4478 states and 14368 transitions. [2021-06-06 00:15:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:15:27,529 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 00:15:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:27,536 INFO L225 Difference]: With dead ends: 4478 [2021-06-06 00:15:27,536 INFO L226 Difference]: Without dead ends: 4431 [2021-06-06 00:15:27,536 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 345.4ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:15:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2021-06-06 00:15:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 2904. [2021-06-06 00:15:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2903 states have (on average 3.5177402686875645) internal successors, (10212), 2903 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 10212 transitions. [2021-06-06 00:15:27,599 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 10212 transitions. Word has length 28 [2021-06-06 00:15:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:27,599 INFO L482 AbstractCegarLoop]: Abstraction has 2904 states and 10212 transitions. [2021-06-06 00:15:27,599 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 00:15:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 10212 transitions. [2021-06-06 00:15:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:27,604 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:27,604 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 00:15:27,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-06 00:15:27,809 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:27,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1347815140, now seen corresponding path program 65 times [2021-06-06 00:15:27,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:27,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819889794] [2021-06-06 00:15:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:27,843 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 00:15:27,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:27,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819889794] [2021-06-06 00:15:27,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819889794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:27,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936456575] [2021-06-06 00:15:27,844 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 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 00:15:27,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:15:27,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:27,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:27,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:27,953 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 00:15:27,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936456575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:27,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:27,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:15:27,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470301505] [2021-06-06 00:15:27,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:27,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:27,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:27,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:27,954 INFO L87 Difference]: Start difference. First operand 2904 states and 10212 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 00:15:28,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:28,593 INFO L93 Difference]: Finished difference Result 4785 states and 15055 transitions. [2021-06-06 00:15:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:15:28,593 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 00:15:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:28,600 INFO L225 Difference]: With dead ends: 4785 [2021-06-06 00:15:28,600 INFO L226 Difference]: Without dead ends: 4759 [2021-06-06 00:15:28,600 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 410.5ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:15:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-06-06 00:15:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 2922. [2021-06-06 00:15:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.5217391304347827) internal successors, (10287), 2921 states have internal predecessors, (10287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10287 transitions. [2021-06-06 00:15:28,648 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10287 transitions. Word has length 28 [2021-06-06 00:15:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:28,648 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10287 transitions. [2021-06-06 00:15:28,648 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 00:15:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10287 transitions. [2021-06-06 00:15:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:28,652 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:28,652 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 00:15:28,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:28,859 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:28,859 INFO L82 PathProgramCache]: Analyzing trace with hash -675402358, now seen corresponding path program 66 times [2021-06-06 00:15:28,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:28,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108248537] [2021-06-06 00:15:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:28,890 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 00:15:28,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:28,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108248537] [2021-06-06 00:15:28,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108248537] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:28,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257865470] [2021-06-06 00:15:28,891 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 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 00:15:28,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:15:28,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:28,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:28,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:29,019 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 00:15:29,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257865470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:29,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:29,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:15:29,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102849533] [2021-06-06 00:15:29,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:29,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:29,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:29,020 INFO L87 Difference]: Start difference. First operand 2922 states and 10287 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 00:15:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:29,689 INFO L93 Difference]: Finished difference Result 4783 states and 15074 transitions. [2021-06-06 00:15:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:15:29,689 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 00:15:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:29,696 INFO L225 Difference]: With dead ends: 4783 [2021-06-06 00:15:29,697 INFO L226 Difference]: Without dead ends: 4771 [2021-06-06 00:15:29,697 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 414.6ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:15:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-06-06 00:15:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 2922. [2021-06-06 00:15:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.515576857240671) internal successors, (10269), 2921 states have internal predecessors, (10269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10269 transitions. [2021-06-06 00:15:29,748 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10269 transitions. Word has length 28 [2021-06-06 00:15:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:29,749 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10269 transitions. [2021-06-06 00:15:29,749 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 00:15:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10269 transitions. [2021-06-06 00:15:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:29,752 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:29,752 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 00:15:29,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4070,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:29,953 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:29,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1724201280, now seen corresponding path program 67 times [2021-06-06 00:15:29,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:29,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060709710] [2021-06-06 00:15:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:29,987 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 00:15:29,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:29,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060709710] [2021-06-06 00:15:29,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060709710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:29,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746839585] [2021-06-06 00:15:29,987 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 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 00:15:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:30,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:30,071 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 00:15:30,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746839585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:30,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:30,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:15:30,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447877549] [2021-06-06 00:15:30,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:30,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:30,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:30,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:30,072 INFO L87 Difference]: Start difference. First operand 2922 states and 10269 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 00:15:30,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:30,603 INFO L93 Difference]: Finished difference Result 5554 states and 17878 transitions. [2021-06-06 00:15:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:15:30,604 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 00:15:30,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:30,611 INFO L225 Difference]: With dead ends: 5554 [2021-06-06 00:15:30,612 INFO L226 Difference]: Without dead ends: 5507 [2021-06-06 00:15:30,612 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 307.2ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:15:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2021-06-06 00:15:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 3068. [2021-06-06 00:15:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.5598304532116076) internal successors, (10918), 3067 states have internal predecessors, (10918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10918 transitions. [2021-06-06 00:15:30,670 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10918 transitions. Word has length 28 [2021-06-06 00:15:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:30,670 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 10918 transitions. [2021-06-06 00:15:30,670 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 00:15:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10918 transitions. [2021-06-06 00:15:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:30,673 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:30,674 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, 1, 1] [2021-06-06 00:15:30,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4071,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:30,874 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:30,874 INFO L82 PathProgramCache]: Analyzing trace with hash 359577472, now seen corresponding path program 68 times [2021-06-06 00:15:30,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:30,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744343235] [2021-06-06 00:15:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:30,895 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 00:15:30,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:30,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744343235] [2021-06-06 00:15:30,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744343235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:30,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793870998] [2021-06-06 00:15:30,895 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 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 00:15:30,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:30,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:30,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:15:30,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:30,972 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 00:15:30,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793870998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:30,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:30,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-06 00:15:30,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053204931] [2021-06-06 00:15:30,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:15:30,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:30,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:15:30,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:15:30,973 INFO L87 Difference]: Start difference. First operand 3068 states and 10918 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 00:15:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:31,129 INFO L93 Difference]: Finished difference Result 4356 states and 14401 transitions. [2021-06-06 00:15:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:15:31,130 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 00:15:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:31,136 INFO L225 Difference]: With dead ends: 4356 [2021-06-06 00:15:31,136 INFO L226 Difference]: Without dead ends: 4356 [2021-06-06 00:15:31,136 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:15:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2021-06-06 00:15:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 2879. [2021-06-06 00:15:31,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 3.5295343988881167) internal successors, (10158), 2878 states have internal predecessors, (10158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 10158 transitions. [2021-06-06 00:15:31,185 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 10158 transitions. Word has length 28 [2021-06-06 00:15:31,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:31,186 INFO L482 AbstractCegarLoop]: Abstraction has 2879 states and 10158 transitions. [2021-06-06 00:15:31,186 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 00:15:31,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 10158 transitions. [2021-06-06 00:15:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:31,190 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:31,190 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 00:15:31,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-06 00:15:31,390 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash -987104094, now seen corresponding path program 69 times [2021-06-06 00:15:31,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:31,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568283469] [2021-06-06 00:15:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:31,422 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 00:15:31,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:31,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568283469] [2021-06-06 00:15:31,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568283469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:31,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937091677] [2021-06-06 00:15:31,423 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 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 00:15:31,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:15:31,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:31,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:31,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:31,521 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 00:15:31,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937091677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:31,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:31,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:15:31,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983438592] [2021-06-06 00:15:31,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:31,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:31,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:31,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:31,522 INFO L87 Difference]: Start difference. First operand 2879 states and 10158 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 00:15:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:32,172 INFO L93 Difference]: Finished difference Result 6267 states and 19847 transitions. [2021-06-06 00:15:32,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:15:32,173 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 00:15:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:32,182 INFO L225 Difference]: With dead ends: 6267 [2021-06-06 00:15:32,182 INFO L226 Difference]: Without dead ends: 6267 [2021-06-06 00:15:32,183 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 366.7ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:15:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2021-06-06 00:15:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 2897. [2021-06-06 00:15:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 3.5293508287292816) internal successors, (10221), 2896 states have internal predecessors, (10221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 10221 transitions. [2021-06-06 00:15:32,250 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 10221 transitions. Word has length 28 [2021-06-06 00:15:32,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:32,250 INFO L482 AbstractCegarLoop]: Abstraction has 2897 states and 10221 transitions. [2021-06-06 00:15:32,250 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 00:15:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 10221 transitions. [2021-06-06 00:15:32,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:32,253 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:32,253 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 00:15:32,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4073 [2021-06-06 00:15:32,454 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash -202190000, now seen corresponding path program 70 times [2021-06-06 00:15:32,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:32,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411476656] [2021-06-06 00:15:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:32,497 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 00:15:32,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:32,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411476656] [2021-06-06 00:15:32,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411476656] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:32,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711223732] [2021-06-06 00:15:32,498 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 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 00:15:32,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:32,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:32,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:32,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:32,595 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 00:15:32,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711223732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:32,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:32,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:15:32,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191017699] [2021-06-06 00:15:32,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:32,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:32,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:32,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:32,596 INFO L87 Difference]: Start difference. First operand 2897 states and 10221 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 00:15:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:33,330 INFO L93 Difference]: Finished difference Result 6510 states and 20600 transitions. [2021-06-06 00:15:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:15:33,331 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 00:15:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:33,340 INFO L225 Difference]: With dead ends: 6510 [2021-06-06 00:15:33,340 INFO L226 Difference]: Without dead ends: 6510 [2021-06-06 00:15:33,341 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 401.9ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-06 00:15:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2021-06-06 00:15:33,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 2991. [2021-06-06 00:15:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 3.5210702341137123) internal successors, (10528), 2990 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 10528 transitions. [2021-06-06 00:15:33,403 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 10528 transitions. Word has length 28 [2021-06-06 00:15:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:33,403 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 10528 transitions. [2021-06-06 00:15:33,403 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 00:15:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 10528 transitions. [2021-06-06 00:15:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:33,407 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:33,407 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 00:15:33,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4074,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:33,608 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1285212656, now seen corresponding path program 71 times [2021-06-06 00:15:33,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:33,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704683700] [2021-06-06 00:15:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:33,637 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 00:15:33,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:33,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704683700] [2021-06-06 00:15:33,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704683700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:33,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340179937] [2021-06-06 00:15:33,638 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 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 00:15:33,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:15:33,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:33,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:33,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:33,723 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 00:15:33,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340179937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:33,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:33,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:15:33,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682121136] [2021-06-06 00:15:33,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:33,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:33,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:33,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:33,724 INFO L87 Difference]: Start difference. First operand 2991 states and 10528 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 00:15:34,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:34,302 INFO L93 Difference]: Finished difference Result 6652 states and 21097 transitions. [2021-06-06 00:15:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:15:34,303 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 00:15:34,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:34,314 INFO L225 Difference]: With dead ends: 6652 [2021-06-06 00:15:34,314 INFO L226 Difference]: Without dead ends: 6616 [2021-06-06 00:15:34,314 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 330.1ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:15:34,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6616 states. [2021-06-06 00:15:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6616 to 3393. [2021-06-06 00:15:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3392 states have (on average 3.5474646226415096) internal successors, (12033), 3392 states have internal predecessors, (12033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 12033 transitions. [2021-06-06 00:15:34,385 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 12033 transitions. Word has length 28 [2021-06-06 00:15:34,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:34,385 INFO L482 AbstractCegarLoop]: Abstraction has 3393 states and 12033 transitions. [2021-06-06 00:15:34,385 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 00:15:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 12033 transitions. [2021-06-06 00:15:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:34,390 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:34,390 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 00:15:34,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4075 [2021-06-06 00:15:34,590 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:34,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:34,591 INFO L82 PathProgramCache]: Analyzing trace with hash 185865462, now seen corresponding path program 72 times [2021-06-06 00:15:34,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:34,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865959738] [2021-06-06 00:15:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:34,627 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 00:15:34,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:34,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865959738] [2021-06-06 00:15:34,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865959738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:34,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169808322] [2021-06-06 00:15:34,627 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 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 00:15:34,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:15:34,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:34,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:34,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:34,749 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 00:15:34,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169808322] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:34,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:34,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:15:34,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434107774] [2021-06-06 00:15:34,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:34,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:34,749 INFO L87 Difference]: Start difference. First operand 3393 states and 12033 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 00:15:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:35,370 INFO L93 Difference]: Finished difference Result 6827 states and 21583 transitions. [2021-06-06 00:15:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:15:35,370 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 00:15:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:35,381 INFO L225 Difference]: With dead ends: 6827 [2021-06-06 00:15:35,381 INFO L226 Difference]: Without dead ends: 6827 [2021-06-06 00:15:35,382 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 385.0ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:15:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2021-06-06 00:15:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 3104. [2021-06-06 00:15:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3103 states have (on average 3.5078955849178213) internal successors, (10885), 3103 states have internal predecessors, (10885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 10885 transitions. [2021-06-06 00:15:35,461 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 10885 transitions. Word has length 28 [2021-06-06 00:15:35,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:35,462 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 10885 transitions. [2021-06-06 00:15:35,462 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 00:15:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 10885 transitions. [2021-06-06 00:15:35,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:35,466 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:35,466 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 00:15:35,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-06 00:15:35,666 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:35,666 INFO L82 PathProgramCache]: Analyzing trace with hash -247011142, now seen corresponding path program 73 times [2021-06-06 00:15:35,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:35,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861851610] [2021-06-06 00:15:35,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:35,705 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 00:15:35,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:35,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861851610] [2021-06-06 00:15:35,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861851610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:35,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008157122] [2021-06-06 00:15:35,705 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 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 00:15:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:35,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:35,791 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 00:15:35,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008157122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:35,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:35,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:15:35,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134297161] [2021-06-06 00:15:35,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:35,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:35,792 INFO L87 Difference]: Start difference. First operand 3104 states and 10885 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 00:15:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:36,516 INFO L93 Difference]: Finished difference Result 5999 states and 19332 transitions. [2021-06-06 00:15:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:15:36,516 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 00:15:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:36,525 INFO L225 Difference]: With dead ends: 5999 [2021-06-06 00:15:36,525 INFO L226 Difference]: Without dead ends: 5995 [2021-06-06 00:15:36,525 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 399.7ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:15:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2021-06-06 00:15:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 2864. [2021-06-06 00:15:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 3.5337059028990567) internal successors, (10117), 2863 states have internal predecessors, (10117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 10117 transitions. [2021-06-06 00:15:36,582 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 10117 transitions. Word has length 28 [2021-06-06 00:15:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:36,582 INFO L482 AbstractCegarLoop]: Abstraction has 2864 states and 10117 transitions. [2021-06-06 00:15:36,582 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 00:15:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 10117 transitions. [2021-06-06 00:15:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:36,585 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:36,585 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 00:15:36,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4077 [2021-06-06 00:15:36,786 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash -519020332, now seen corresponding path program 74 times [2021-06-06 00:15:36,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:36,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449313640] [2021-06-06 00:15:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:36,817 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 00:15:36,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:36,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449313640] [2021-06-06 00:15:36,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449313640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:36,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303231028] [2021-06-06 00:15:36,817 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 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 00:15:36,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:36,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:36,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:36,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:36,958 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 00:15:36,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303231028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:36,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:36,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:15:36,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860482361] [2021-06-06 00:15:36,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:36,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:36,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:36,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:36,959 INFO L87 Difference]: Start difference. First operand 2864 states and 10117 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 00:15:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:37,969 INFO L93 Difference]: Finished difference Result 9242 states and 30126 transitions. [2021-06-06 00:15:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:15:37,970 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 00:15:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:37,985 INFO L225 Difference]: With dead ends: 9242 [2021-06-06 00:15:37,985 INFO L226 Difference]: Without dead ends: 9242 [2021-06-06 00:15:37,986 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 617.3ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:15:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9242 states. [2021-06-06 00:15:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9242 to 3043. [2021-06-06 00:15:38,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 3.6058514135437214) internal successors, (10969), 3042 states have internal predecessors, (10969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 10969 transitions. [2021-06-06 00:15:38,072 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 10969 transitions. Word has length 28 [2021-06-06 00:15:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:38,072 INFO L482 AbstractCegarLoop]: Abstraction has 3043 states and 10969 transitions. [2021-06-06 00:15:38,072 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 00:15:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 10969 transitions. [2021-06-06 00:15:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:38,075 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:38,075 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 00:15:38,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-06 00:15:38,276 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:38,276 INFO L82 PathProgramCache]: Analyzing trace with hash 47931748, now seen corresponding path program 75 times [2021-06-06 00:15:38,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:38,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347426634] [2021-06-06 00:15:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:38,307 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 00:15:38,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:38,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347426634] [2021-06-06 00:15:38,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347426634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:38,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624931881] [2021-06-06 00:15:38,308 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 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 00:15:38,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:15:38,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:38,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:38,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:38,420 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 00:15:38,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624931881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:38,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:38,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:15:38,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224527707] [2021-06-06 00:15:38,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:38,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:38,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:38,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:38,421 INFO L87 Difference]: Start difference. First operand 3043 states and 10969 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 00:15:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:39,370 INFO L93 Difference]: Finished difference Result 9069 states and 29656 transitions. [2021-06-06 00:15:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:15:39,370 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 00:15:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:39,385 INFO L225 Difference]: With dead ends: 9069 [2021-06-06 00:15:39,385 INFO L226 Difference]: Without dead ends: 9069 [2021-06-06 00:15:39,385 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 568.0ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:15:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9069 states. [2021-06-06 00:15:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9069 to 3012. [2021-06-06 00:15:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 3.5888409166389903) internal successors, (10806), 3011 states have internal predecessors, (10806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 10806 transitions. [2021-06-06 00:15:39,470 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 10806 transitions. Word has length 28 [2021-06-06 00:15:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:39,470 INFO L482 AbstractCegarLoop]: Abstraction has 3012 states and 10806 transitions. [2021-06-06 00:15:39,471 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 00:15:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 10806 transitions. [2021-06-06 00:15:39,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:39,474 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:39,474 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 00:15:39,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-06 00:15:39,675 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:39,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:39,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1124414110, now seen corresponding path program 76 times [2021-06-06 00:15:39,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:39,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671056572] [2021-06-06 00:15:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:39,709 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 00:15:39,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:39,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671056572] [2021-06-06 00:15:39,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671056572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:39,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047705690] [2021-06-06 00:15:39,709 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 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 00:15:39,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:39,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:39,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:39,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:39,809 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 00:15:39,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047705690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:39,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:39,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:15:39,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229489785] [2021-06-06 00:15:39,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:39,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:39,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:39,810 INFO L87 Difference]: Start difference. First operand 3012 states and 10806 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 00:15:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:40,744 INFO L93 Difference]: Finished difference Result 8513 states and 26929 transitions. [2021-06-06 00:15:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:15:40,745 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 00:15:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:40,757 INFO L225 Difference]: With dead ends: 8513 [2021-06-06 00:15:40,757 INFO L226 Difference]: Without dead ends: 8513 [2021-06-06 00:15:40,757 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 495.8ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:15:40,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8513 states. [2021-06-06 00:15:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8513 to 3032. [2021-06-06 00:15:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 3031 states have (on average 3.5922137908281093) internal successors, (10888), 3031 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 10888 transitions. [2021-06-06 00:15:40,834 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 10888 transitions. Word has length 28 [2021-06-06 00:15:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:40,834 INFO L482 AbstractCegarLoop]: Abstraction has 3032 states and 10888 transitions. [2021-06-06 00:15:40,834 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 00:15:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10888 transitions. [2021-06-06 00:15:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:40,838 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:40,838 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 00:15:41,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4080,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:41,039 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:41,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1043038022, now seen corresponding path program 77 times [2021-06-06 00:15:41,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:41,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618228144] [2021-06-06 00:15:41,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:41,070 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 00:15:41,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:41,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618228144] [2021-06-06 00:15:41,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618228144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:41,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306353351] [2021-06-06 00:15:41,071 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 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 00:15:41,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:15:41,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:41,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:41,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:41,180 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 00:15:41,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306353351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:41,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:41,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:15:41,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998873777] [2021-06-06 00:15:41,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:41,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:41,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:41,181 INFO L87 Difference]: Start difference. First operand 3032 states and 10888 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 00:15:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:41,998 INFO L93 Difference]: Finished difference Result 8020 states and 25736 transitions. [2021-06-06 00:15:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:15:42,001 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 00:15:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:42,014 INFO L225 Difference]: With dead ends: 8020 [2021-06-06 00:15:42,014 INFO L226 Difference]: Without dead ends: 8012 [2021-06-06 00:15:42,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 449.0ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:15:42,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2021-06-06 00:15:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 3014. [2021-06-06 00:15:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3013 states have (on average 3.5881181546631264) internal successors, (10811), 3013 states have internal predecessors, (10811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10811 transitions. [2021-06-06 00:15:42,101 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10811 transitions. Word has length 28 [2021-06-06 00:15:42,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:42,101 INFO L482 AbstractCegarLoop]: Abstraction has 3014 states and 10811 transitions. [2021-06-06 00:15:42,101 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 00:15:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10811 transitions. [2021-06-06 00:15:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:42,105 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:42,105 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 00:15:42,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4081 [2021-06-06 00:15:42,305 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:42,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:42,306 INFO L82 PathProgramCache]: Analyzing trace with hash -112380806, now seen corresponding path program 78 times [2021-06-06 00:15:42,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:42,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849961088] [2021-06-06 00:15:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:42,336 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 00:15:42,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:42,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849961088] [2021-06-06 00:15:42,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849961088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:42,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380258308] [2021-06-06 00:15:42,336 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 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 00:15:42,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:15:42,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:42,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:42,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:42,451 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 00:15:42,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380258308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:42,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:42,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:15:42,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882847674] [2021-06-06 00:15:42,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:42,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:42,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:42,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:42,452 INFO L87 Difference]: Start difference. First operand 3014 states and 10811 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 00:15:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:43,318 INFO L93 Difference]: Finished difference Result 7945 states and 25505 transitions. [2021-06-06 00:15:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-06 00:15:43,319 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 00:15:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:43,330 INFO L225 Difference]: With dead ends: 7945 [2021-06-06 00:15:43,331 INFO L226 Difference]: Without dead ends: 7945 [2021-06-06 00:15:43,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 488.4ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:15:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2021-06-06 00:15:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 3030. [2021-06-06 00:15:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 3.5902938263453286) internal successors, (10875), 3029 states have internal predecessors, (10875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 10875 transitions. [2021-06-06 00:15:43,422 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 10875 transitions. Word has length 28 [2021-06-06 00:15:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:43,422 INFO L482 AbstractCegarLoop]: Abstraction has 3030 states and 10875 transitions. [2021-06-06 00:15:43,422 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 00:15:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 10875 transitions. [2021-06-06 00:15:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:43,426 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:43,426 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 00:15:43,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4082 [2021-06-06 00:15:43,627 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:43,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:43,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1530658348, now seen corresponding path program 79 times [2021-06-06 00:15:43,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:43,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411720100] [2021-06-06 00:15:43,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:43,661 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 00:15:43,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:43,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411720100] [2021-06-06 00:15:43,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411720100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:43,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293585574] [2021-06-06 00:15:43,661 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 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 00:15:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:43,762 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 00:15:43,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293585574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:43,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:43,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:15:43,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755518102] [2021-06-06 00:15:43,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:43,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:43,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:43,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:43,763 INFO L87 Difference]: Start difference. First operand 3030 states and 10875 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 00:15:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:44,669 INFO L93 Difference]: Finished difference Result 7613 states and 24721 transitions. [2021-06-06 00:15:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:15:44,669 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 00:15:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:44,681 INFO L225 Difference]: With dead ends: 7613 [2021-06-06 00:15:44,681 INFO L226 Difference]: Without dead ends: 7605 [2021-06-06 00:15:44,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 485.8ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:15:44,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2021-06-06 00:15:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 2787. [2021-06-06 00:15:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 3.5078966259870783) internal successors, (9773), 2786 states have internal predecessors, (9773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 9773 transitions. [2021-06-06 00:15:44,755 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 9773 transitions. Word has length 28 [2021-06-06 00:15:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:44,755 INFO L482 AbstractCegarLoop]: Abstraction has 2787 states and 9773 transitions. [2021-06-06 00:15:44,755 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 00:15:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 9773 transitions. [2021-06-06 00:15:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:44,758 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:44,758 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 00:15:44,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4083,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:44,965 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1614061928, now seen corresponding path program 80 times [2021-06-06 00:15:44,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:44,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333354264] [2021-06-06 00:15:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:45,018 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 00:15:45,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:45,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333354264] [2021-06-06 00:15:45,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333354264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:45,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11360337] [2021-06-06 00:15:45,019 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 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 00:15:45,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:45,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:45,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:45,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:45,138 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 00:15:45,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11360337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:45,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:45,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:15:45,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348548210] [2021-06-06 00:15:45,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:15:45,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:45,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:15:45,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:15:45,139 INFO L87 Difference]: Start difference. First operand 2787 states and 9773 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 00:15:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:45,970 INFO L93 Difference]: Finished difference Result 5810 states and 18592 transitions. [2021-06-06 00:15:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:15:45,970 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 00:15:45,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:45,979 INFO L225 Difference]: With dead ends: 5810 [2021-06-06 00:15:45,979 INFO L226 Difference]: Without dead ends: 5810 [2021-06-06 00:15:45,980 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 509.0ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:15:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-06-06 00:15:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 2799. [2021-06-06 00:15:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 3.506433166547534) internal successors, (9811), 2798 states have internal predecessors, (9811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 9811 transitions. [2021-06-06 00:15:46,037 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 9811 transitions. Word has length 28 [2021-06-06 00:15:46,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:46,037 INFO L482 AbstractCegarLoop]: Abstraction has 2799 states and 9811 transitions. [2021-06-06 00:15:46,037 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 00:15:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 9811 transitions. [2021-06-06 00:15:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:46,041 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:46,041 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 00:15:46,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4084 [2021-06-06 00:15:46,241 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:46,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1027545192, now seen corresponding path program 81 times [2021-06-06 00:15:46,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:46,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71829025] [2021-06-06 00:15:46,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:46,274 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 00:15:46,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:46,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71829025] [2021-06-06 00:15:46,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71829025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:46,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723036696] [2021-06-06 00:15:46,275 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 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 00:15:46,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:15:46,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:46,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:46,397 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 00:15:46,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723036696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:46,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:46,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:46,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521560375] [2021-06-06 00:15:46,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:46,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:46,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:46,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:46,398 INFO L87 Difference]: Start difference. First operand 2799 states and 9811 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 00:15:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:47,433 INFO L93 Difference]: Finished difference Result 6586 states and 20579 transitions. [2021-06-06 00:15:47,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:15:47,433 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 00:15:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:47,443 INFO L225 Difference]: With dead ends: 6586 [2021-06-06 00:15:47,443 INFO L226 Difference]: Without dead ends: 6586 [2021-06-06 00:15:47,444 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 652.3ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:15:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2021-06-06 00:15:47,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 2865. [2021-06-06 00:15:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2864 states have (on average 3.5013966480446927) internal successors, (10028), 2864 states have internal predecessors, (10028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 10028 transitions. [2021-06-06 00:15:47,511 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 10028 transitions. Word has length 28 [2021-06-06 00:15:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:47,511 INFO L482 AbstractCegarLoop]: Abstraction has 2865 states and 10028 transitions. [2021-06-06 00:15:47,511 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 00:15:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 10028 transitions. [2021-06-06 00:15:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:47,515 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:47,515 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 00:15:47,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4085 [2021-06-06 00:15:47,716 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:47,716 INFO L82 PathProgramCache]: Analyzing trace with hash 615493962, now seen corresponding path program 82 times [2021-06-06 00:15:47,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:47,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085164943] [2021-06-06 00:15:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:47,749 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 00:15:47,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:47,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085164943] [2021-06-06 00:15:47,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085164943] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:47,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670788849] [2021-06-06 00:15:47,749 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 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 00:15:47,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:47,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:47,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:47,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:47,863 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 00:15:47,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670788849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:47,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:47,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:15:47,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264003820] [2021-06-06 00:15:47,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:47,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:47,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:47,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:47,864 INFO L87 Difference]: Start difference. First operand 2865 states and 10028 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 00:15:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:48,817 INFO L93 Difference]: Finished difference Result 6152 states and 19441 transitions. [2021-06-06 00:15:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:15:48,817 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 00:15:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:48,826 INFO L225 Difference]: With dead ends: 6152 [2021-06-06 00:15:48,826 INFO L226 Difference]: Without dead ends: 6148 [2021-06-06 00:15:48,826 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 574.1ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:15:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2021-06-06 00:15:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 2791. [2021-06-06 00:15:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 3.4974910394265235) internal successors, (9758), 2790 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 9758 transitions. [2021-06-06 00:15:48,883 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 9758 transitions. Word has length 28 [2021-06-06 00:15:48,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:48,883 INFO L482 AbstractCegarLoop]: Abstraction has 2791 states and 9758 transitions. [2021-06-06 00:15:48,883 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 00:15:48,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 9758 transitions. [2021-06-06 00:15:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:48,886 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:48,886 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 00:15:49,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-06 00:15:49,086 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1194937186, now seen corresponding path program 65 times [2021-06-06 00:15:49,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:49,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435132897] [2021-06-06 00:15:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:49,129 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 00:15:49,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:49,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435132897] [2021-06-06 00:15:49,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435132897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:49,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526870309] [2021-06-06 00:15:49,129 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 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 00:15:49,153 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:15:49,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:49,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:49,222 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 00:15:49,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526870309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:49,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:49,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:49,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225562724] [2021-06-06 00:15:49,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:49,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:49,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:49,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:49,223 INFO L87 Difference]: Start difference. First operand 2791 states and 9758 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 00:15:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:49,744 INFO L93 Difference]: Finished difference Result 5291 states and 17008 transitions. [2021-06-06 00:15:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:15:49,744 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 00:15:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:49,752 INFO L225 Difference]: With dead ends: 5291 [2021-06-06 00:15:49,752 INFO L226 Difference]: Without dead ends: 5291 [2021-06-06 00:15:49,752 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:15:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2021-06-06 00:15:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 2791. [2021-06-06 00:15:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 3.499641577060932) internal successors, (9764), 2790 states have internal predecessors, (9764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 9764 transitions. [2021-06-06 00:15:49,800 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 9764 transitions. Word has length 28 [2021-06-06 00:15:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:49,800 INFO L482 AbstractCegarLoop]: Abstraction has 2791 states and 9764 transitions. [2021-06-06 00:15:49,800 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 00:15:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 9764 transitions. [2021-06-06 00:15:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:49,803 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:49,803 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 00:15:50,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4087,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:50,004 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:50,004 INFO L82 PathProgramCache]: Analyzing trace with hash -416862576, now seen corresponding path program 66 times [2021-06-06 00:15:50,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:50,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930152520] [2021-06-06 00:15:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:50,041 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 00:15:50,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:50,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930152520] [2021-06-06 00:15:50,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930152520] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:50,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119111727] [2021-06-06 00:15:50,042 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 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 00:15:50,065 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:15:50,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:50,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:50,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:50,136 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 00:15:50,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119111727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:50,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:50,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:50,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754037724] [2021-06-06 00:15:50,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:50,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:50,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:50,137 INFO L87 Difference]: Start difference. First operand 2791 states and 9764 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 00:15:50,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:50,840 INFO L93 Difference]: Finished difference Result 5642 states and 18000 transitions. [2021-06-06 00:15:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:15:50,840 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 00:15:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:50,848 INFO L225 Difference]: With dead ends: 5642 [2021-06-06 00:15:50,848 INFO L226 Difference]: Without dead ends: 5642 [2021-06-06 00:15:50,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 400.8ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:15:50,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-06-06 00:15:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 2782. [2021-06-06 00:15:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2781 states have (on average 3.4998202085580727) internal successors, (9733), 2781 states have internal predecessors, (9733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 9733 transitions. [2021-06-06 00:15:50,899 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 9733 transitions. Word has length 28 [2021-06-06 00:15:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:50,899 INFO L482 AbstractCegarLoop]: Abstraction has 2782 states and 9733 transitions. [2021-06-06 00:15:50,899 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 00:15:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 9733 transitions. [2021-06-06 00:15:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:50,902 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:50,902 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 00:15:51,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-06 00:15:51,102 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash -648402224, now seen corresponding path program 67 times [2021-06-06 00:15:51,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:51,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191601373] [2021-06-06 00:15:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:51,146 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 00:15:51,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:51,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191601373] [2021-06-06 00:15:51,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191601373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:51,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755653268] [2021-06-06 00:15:51,146 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 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 00:15:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:51,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:51,252 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 00:15:51,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755653268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:51,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:51,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:51,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878951606] [2021-06-06 00:15:51,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:51,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:51,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:51,253 INFO L87 Difference]: Start difference. First operand 2782 states and 9733 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 00:15:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:52,110 INFO L93 Difference]: Finished difference Result 6106 states and 19261 transitions. [2021-06-06 00:15:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-06 00:15:52,110 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 00:15:52,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:52,119 INFO L225 Difference]: With dead ends: 6106 [2021-06-06 00:15:52,119 INFO L226 Difference]: Without dead ends: 6106 [2021-06-06 00:15:52,119 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 475.7ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:15:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2021-06-06 00:15:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 2844. [2021-06-06 00:15:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2843 states have (on average 3.4956032360182907) internal successors, (9938), 2843 states have internal predecessors, (9938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 9938 transitions. [2021-06-06 00:15:52,190 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 9938 transitions. Word has length 28 [2021-06-06 00:15:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:52,190 INFO L482 AbstractCegarLoop]: Abstraction has 2844 states and 9938 transitions. [2021-06-06 00:15:52,190 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 00:15:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 9938 transitions. [2021-06-06 00:15:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:52,194 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:52,194 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 00:15:52,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-06 00:15:52,394 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash -628686410, now seen corresponding path program 68 times [2021-06-06 00:15:52,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:52,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810195531] [2021-06-06 00:15:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:52,426 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 00:15:52,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:52,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810195531] [2021-06-06 00:15:52,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810195531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:52,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182069087] [2021-06-06 00:15:52,426 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 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 00:15:52,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:52,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:52,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:52,533 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 00:15:52,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182069087] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:52,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:52,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-06 00:15:52,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439085328] [2021-06-06 00:15:52,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:15:52,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:52,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:15:52,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:15:52,534 INFO L87 Difference]: Start difference. First operand 2844 states and 9938 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 00:15:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:53,043 INFO L93 Difference]: Finished difference Result 6899 states and 23235 transitions. [2021-06-06 00:15:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:15:53,043 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 00:15:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:53,055 INFO L225 Difference]: With dead ends: 6899 [2021-06-06 00:15:53,055 INFO L226 Difference]: Without dead ends: 6899 [2021-06-06 00:15:53,056 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 344.5ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:15:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2021-06-06 00:15:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 4080. [2021-06-06 00:15:53,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 3.613875949987742) internal successors, (14741), 4079 states have internal predecessors, (14741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 14741 transitions. [2021-06-06 00:15:53,141 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 14741 transitions. Word has length 28 [2021-06-06 00:15:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:53,141 INFO L482 AbstractCegarLoop]: Abstraction has 4080 states and 14741 transitions. [2021-06-06 00:15:53,141 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 00:15:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 14741 transitions. [2021-06-06 00:15:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:53,146 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:53,146 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 00:15:53,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:53,347 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash -693223366, now seen corresponding path program 69 times [2021-06-06 00:15:53,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:53,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905848708] [2021-06-06 00:15:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:53,383 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 00:15:53,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:53,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905848708] [2021-06-06 00:15:53,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905848708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:53,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179097039] [2021-06-06 00:15:53,384 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 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 00:15:53,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:15:53,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:53,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:53,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:53,469 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 00:15:53,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179097039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:53,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:53,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:15:53,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71703896] [2021-06-06 00:15:53,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:53,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:53,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:53,470 INFO L87 Difference]: Start difference. First operand 4080 states and 14741 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 00:15:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:54,183 INFO L93 Difference]: Finished difference Result 7418 states and 25100 transitions. [2021-06-06 00:15:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:15:54,183 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 00:15:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:54,195 INFO L225 Difference]: With dead ends: 7418 [2021-06-06 00:15:54,195 INFO L226 Difference]: Without dead ends: 7414 [2021-06-06 00:15:54,196 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 423.7ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:15:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2021-06-06 00:15:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 3968. [2021-06-06 00:15:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 3.623140912528359) internal successors, (14373), 3967 states have internal predecessors, (14373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 14373 transitions. [2021-06-06 00:15:54,274 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 14373 transitions. Word has length 28 [2021-06-06 00:15:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:54,274 INFO L482 AbstractCegarLoop]: Abstraction has 3968 states and 14373 transitions. [2021-06-06 00:15:54,274 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 00:15:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 14373 transitions. [2021-06-06 00:15:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:54,279 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:54,279 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 00:15:54,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4091 [2021-06-06 00:15:54,480 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1327034102, now seen corresponding path program 83 times [2021-06-06 00:15:54,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:54,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717063059] [2021-06-06 00:15:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:54,505 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 00:15:54,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:54,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717063059] [2021-06-06 00:15:54,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717063059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:54,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939759530] [2021-06-06 00:15:54,506 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 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 00:15:54,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:15:54,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:54,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:54,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:54,604 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 00:15:54,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939759530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:54,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:54,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:15:54,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680342120] [2021-06-06 00:15:54,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:54,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:54,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:54,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:54,605 INFO L87 Difference]: Start difference. First operand 3968 states and 14373 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 00:15:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:55,372 INFO L93 Difference]: Finished difference Result 8219 states and 27545 transitions. [2021-06-06 00:15:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:15:55,373 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 00:15:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:55,387 INFO L225 Difference]: With dead ends: 8219 [2021-06-06 00:15:55,387 INFO L226 Difference]: Without dead ends: 8207 [2021-06-06 00:15:55,387 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 437.4ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:15:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2021-06-06 00:15:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 4409. [2021-06-06 00:15:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.713475499092559) internal successors, (16369), 4408 states have internal predecessors, (16369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 16369 transitions. [2021-06-06 00:15:55,498 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 16369 transitions. Word has length 28 [2021-06-06 00:15:55,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:55,498 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 16369 transitions. [2021-06-06 00:15:55,498 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 00:15:55,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 16369 transitions. [2021-06-06 00:15:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:55,504 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:55,504 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 00:15:55,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4092,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:55,704 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash -926591794, now seen corresponding path program 84 times [2021-06-06 00:15:55,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:55,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960286548] [2021-06-06 00:15:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:55,730 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 00:15:55,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:55,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960286548] [2021-06-06 00:15:55,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960286548] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:55,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72149753] [2021-06-06 00:15:55,731 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 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 00:15:55,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:15:55,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:55,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:55,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:55,828 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 00:15:55,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72149753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:55,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:55,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:15:55,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740819197] [2021-06-06 00:15:55,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:15:55,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:55,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:15:55,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:15:55,829 INFO L87 Difference]: Start difference. First operand 4409 states and 16369 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 00:15:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:56,599 INFO L93 Difference]: Finished difference Result 8511 states and 28462 transitions. [2021-06-06 00:15:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:15:56,599 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 00:15:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:56,612 INFO L225 Difference]: With dead ends: 8511 [2021-06-06 00:15:56,612 INFO L226 Difference]: Without dead ends: 8511 [2021-06-06 00:15:56,613 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 440.5ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:15:56,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8511 states. [2021-06-06 00:15:56,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8511 to 4429. [2021-06-06 00:15:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 3.7007678410117433) internal successors, (16387), 4428 states have internal predecessors, (16387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 16387 transitions. [2021-06-06 00:15:56,708 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 16387 transitions. Word has length 28 [2021-06-06 00:15:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:56,708 INFO L482 AbstractCegarLoop]: Abstraction has 4429 states and 16387 transitions. [2021-06-06 00:15:56,708 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 00:15:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 16387 transitions. [2021-06-06 00:15:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:56,714 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:56,714 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 00:15:56,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4093,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:56,914 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:56,915 INFO L82 PathProgramCache]: Analyzing trace with hash -2129998084, now seen corresponding path program 85 times [2021-06-06 00:15:56,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:56,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413828679] [2021-06-06 00:15:56,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:56,943 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 00:15:56,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:56,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413828679] [2021-06-06 00:15:56,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413828679] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:56,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557293955] [2021-06-06 00:15:56,944 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 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 00:15:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:56,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:15:56,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:57,018 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 00:15:57,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557293955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:57,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:57,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:15:57,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262424261] [2021-06-06 00:15:57,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:15:57,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:57,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:15:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:15:57,019 INFO L87 Difference]: Start difference. First operand 4429 states and 16387 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 00:15:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:57,438 INFO L93 Difference]: Finished difference Result 7882 states and 27809 transitions. [2021-06-06 00:15:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:15:57,438 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 00:15:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:57,451 INFO L225 Difference]: With dead ends: 7882 [2021-06-06 00:15:57,451 INFO L226 Difference]: Without dead ends: 7799 [2021-06-06 00:15:57,451 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 218.1ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:15:57,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2021-06-06 00:15:57,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 5872. [2021-06-06 00:15:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 3.7629024016351558) internal successors, (22092), 5871 states have internal predecessors, (22092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 22092 transitions. [2021-06-06 00:15:57,555 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 22092 transitions. Word has length 28 [2021-06-06 00:15:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:57,555 INFO L482 AbstractCegarLoop]: Abstraction has 5872 states and 22092 transitions. [2021-06-06 00:15:57,555 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 00:15:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 22092 transitions. [2021-06-06 00:15:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:57,564 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:57,564 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 00:15:57,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4094 [2021-06-06 00:15:57,764 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:57,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash -921983104, now seen corresponding path program 86 times [2021-06-06 00:15:57,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:57,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824765601] [2021-06-06 00:15:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:57,789 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 00:15:57,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:57,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824765601] [2021-06-06 00:15:57,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824765601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:57,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567248680] [2021-06-06 00:15:57,789 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 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 00:15:57,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:15:57,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:57,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:15:57,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:57,864 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 00:15:57,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567248680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:57,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:57,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:15:57,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857587662] [2021-06-06 00:15:57,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:15:57,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:57,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:15:57,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:15:57,865 INFO L87 Difference]: Start difference. First operand 5872 states and 22092 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 00:15:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:58,030 INFO L93 Difference]: Finished difference Result 8160 states and 28714 transitions. [2021-06-06 00:15:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:15:58,030 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 00:15:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:58,045 INFO L225 Difference]: With dead ends: 8160 [2021-06-06 00:15:58,045 INFO L226 Difference]: Without dead ends: 8160 [2021-06-06 00:15:58,045 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:15:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8160 states. [2021-06-06 00:15:58,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8160 to 6012. [2021-06-06 00:15:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 3.7394776243553487) internal successors, (22478), 6011 states have internal predecessors, (22478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 22478 transitions. [2021-06-06 00:15:58,153 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 22478 transitions. Word has length 28 [2021-06-06 00:15:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:58,154 INFO L482 AbstractCegarLoop]: Abstraction has 6012 states and 22478 transitions. [2021-06-06 00:15:58,154 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 00:15:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 22478 transitions. [2021-06-06 00:15:58,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:58,162 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:58,162 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 00:15:58,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4095,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:15:58,363 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash 8216640, now seen corresponding path program 87 times [2021-06-06 00:15:58,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:58,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545472779] [2021-06-06 00:15:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:58,401 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 00:15:58,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:58,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545472779] [2021-06-06 00:15:58,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545472779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:58,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203844080] [2021-06-06 00:15:58,401 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 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 00:15:58,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:15:58,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:58,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:58,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:58,486 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 00:15:58,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203844080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:58,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:58,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:15:58,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844434238] [2021-06-06 00:15:58,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:15:58,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:58,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:15:58,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:15:58,487 INFO L87 Difference]: Start difference. First operand 6012 states and 22478 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 00:15:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:15:59,151 INFO L93 Difference]: Finished difference Result 12545 states and 43647 transitions. [2021-06-06 00:15:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-06 00:15:59,151 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 00:15:59,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:15:59,173 INFO L225 Difference]: With dead ends: 12545 [2021-06-06 00:15:59,173 INFO L226 Difference]: Without dead ends: 12545 [2021-06-06 00:15:59,173 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 385.1ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:15:59,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-06-06 00:15:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 6665. [2021-06-06 00:15:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6664 states have (on average 3.7554021608643455) internal successors, (25026), 6664 states have internal predecessors, (25026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:15:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 25026 transitions. [2021-06-06 00:15:59,328 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 25026 transitions. Word has length 28 [2021-06-06 00:15:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:15:59,328 INFO L482 AbstractCegarLoop]: Abstraction has 6665 states and 25026 transitions. [2021-06-06 00:15:59,328 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 00:15:59,328 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 25026 transitions. [2021-06-06 00:15:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:15:59,337 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:15:59,337 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 00:15:59,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4096 [2021-06-06 00:15:59,538 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:15:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:15:59,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1910896092, now seen corresponding path program 88 times [2021-06-06 00:15:59,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:15:59,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698795340] [2021-06-06 00:15:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:15:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:15:59,570 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 00:15:59,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:15:59,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698795340] [2021-06-06 00:15:59,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698795340] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:59,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323831430] [2021-06-06 00:15:59,570 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 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 00:15:59,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:15:59,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:15:59,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:15:59,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:15:59,649 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 00:15:59,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323831430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:15:59,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:15:59,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:15:59,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222742172] [2021-06-06 00:15:59,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:15:59,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:15:59,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:15:59,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:15:59,650 INFO L87 Difference]: Start difference. First operand 6665 states and 25026 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 00:16:00,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:00,277 INFO L93 Difference]: Finished difference Result 12678 states and 44148 transitions. [2021-06-06 00:16:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:16:00,277 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 00:16:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:00,302 INFO L225 Difference]: With dead ends: 12678 [2021-06-06 00:16:00,302 INFO L226 Difference]: Without dead ends: 12678 [2021-06-06 00:16:00,303 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 331.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:16:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2021-06-06 00:16:00,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 6895. [2021-06-06 00:16:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6894 states have (on average 3.7358572671888597) internal successors, (25755), 6894 states have internal predecessors, (25755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 25755 transitions. [2021-06-06 00:16:00,467 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 25755 transitions. Word has length 28 [2021-06-06 00:16:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:00,467 INFO L482 AbstractCegarLoop]: Abstraction has 6895 states and 25755 transitions. [2021-06-06 00:16:00,467 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 00:16:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 25755 transitions. [2021-06-06 00:16:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:00,477 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:00,477 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 00:16:00,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4097 [2021-06-06 00:16:00,678 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash 827873436, now seen corresponding path program 89 times [2021-06-06 00:16:00,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:00,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996805299] [2021-06-06 00:16:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:00,703 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 00:16:00,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:00,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996805299] [2021-06-06 00:16:00,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996805299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:00,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819404621] [2021-06-06 00:16:00,704 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 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 00:16:00,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:16:00,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:00,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:00,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:00,779 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 00:16:00,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819404621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:00,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:00,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:16:00,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822757486] [2021-06-06 00:16:00,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:16:00,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:00,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:16:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:16:00,780 INFO L87 Difference]: Start difference. First operand 6895 states and 25755 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 00:16:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:01,130 INFO L93 Difference]: Finished difference Result 9371 states and 33680 transitions. [2021-06-06 00:16:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:16:01,131 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 00:16:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:01,148 INFO L225 Difference]: With dead ends: 9371 [2021-06-06 00:16:01,148 INFO L226 Difference]: Without dead ends: 9341 [2021-06-06 00:16:01,149 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:16:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-06-06 00:16:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 7751. [2021-06-06 00:16:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7751 states, 7750 states have (on average 3.7625806451612904) internal successors, (29160), 7750 states have internal predecessors, (29160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7751 states to 7751 states and 29160 transitions. [2021-06-06 00:16:01,341 INFO L78 Accepts]: Start accepts. Automaton has 7751 states and 29160 transitions. Word has length 28 [2021-06-06 00:16:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:01,341 INFO L482 AbstractCegarLoop]: Abstraction has 7751 states and 29160 transitions. [2021-06-06 00:16:01,341 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 00:16:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7751 states and 29160 transitions. [2021-06-06 00:16:01,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:01,353 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:01,353 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 00:16:01,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4098 [2021-06-06 00:16:01,553 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:01,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1996015742, now seen corresponding path program 90 times [2021-06-06 00:16:01,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:01,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057755859] [2021-06-06 00:16:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:01,581 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 00:16:01,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:01,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057755859] [2021-06-06 00:16:01,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057755859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:01,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207771146] [2021-06-06 00:16:01,581 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 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 00:16:01,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:16:01,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:01,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:01,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:01,667 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 00:16:01,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207771146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:01,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:01,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:16:01,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283291735] [2021-06-06 00:16:01,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:16:01,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:01,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:16:01,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:16:01,668 INFO L87 Difference]: Start difference. First operand 7751 states and 29160 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 00:16:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:02,015 INFO L93 Difference]: Finished difference Result 9993 states and 35743 transitions. [2021-06-06 00:16:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-06 00:16:02,016 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 00:16:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:02,032 INFO L225 Difference]: With dead ends: 9993 [2021-06-06 00:16:02,033 INFO L226 Difference]: Without dead ends: 9993 [2021-06-06 00:16:02,033 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 183.3ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-06 00:16:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9993 states. [2021-06-06 00:16:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9993 to 7791. [2021-06-06 00:16:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 3.7585365853658534) internal successors, (29279), 7790 states have internal predecessors, (29279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 29279 transitions. [2021-06-06 00:16:02,174 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 29279 transitions. Word has length 28 [2021-06-06 00:16:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:02,174 INFO L482 AbstractCegarLoop]: Abstraction has 7791 states and 29279 transitions. [2021-06-06 00:16:02,174 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 00:16:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 29279 transitions. [2021-06-06 00:16:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:02,186 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:02,186 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 00:16:02,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4099 [2021-06-06 00:16:02,386 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:02,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1866074950, now seen corresponding path program 91 times [2021-06-06 00:16:02,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:02,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376115290] [2021-06-06 00:16:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:02,418 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 00:16:02,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:02,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376115290] [2021-06-06 00:16:02,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376115290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:02,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848171265] [2021-06-06 00:16:02,418 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 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 00:16:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:02,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:02,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:02,492 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 00:16:02,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848171265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:02,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:02,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-06 00:16:02,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155976151] [2021-06-06 00:16:02,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:02,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:02,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:02,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:02,493 INFO L87 Difference]: Start difference. First operand 7791 states and 29279 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 00:16:03,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:03,044 INFO L93 Difference]: Finished difference Result 13376 states and 47489 transitions. [2021-06-06 00:16:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:16:03,044 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 00:16:03,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:03,072 INFO L225 Difference]: With dead ends: 13376 [2021-06-06 00:16:03,072 INFO L226 Difference]: Without dead ends: 13372 [2021-06-06 00:16:03,072 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 289.2ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:16:03,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2021-06-06 00:16:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 7707. [2021-06-06 00:16:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 7706 states have (on average 3.7608357124318714) internal successors, (28981), 7706 states have internal predecessors, (28981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 28981 transitions. [2021-06-06 00:16:03,270 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 28981 transitions. Word has length 28 [2021-06-06 00:16:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:03,270 INFO L482 AbstractCegarLoop]: Abstraction has 7707 states and 28981 transitions. [2021-06-06 00:16:03,271 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 00:16:03,271 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 28981 transitions. [2021-06-06 00:16:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:03,281 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:03,282 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 00:16:03,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4100 [2021-06-06 00:16:03,482 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:03,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:03,482 INFO L82 PathProgramCache]: Analyzing trace with hash 970254134, now seen corresponding path program 92 times [2021-06-06 00:16:03,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:03,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782787003] [2021-06-06 00:16:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:03,511 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 00:16:03,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:03,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782787003] [2021-06-06 00:16:03,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782787003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:03,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77143883] [2021-06-06 00:16:03,512 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 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 00:16:03,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:03,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:03,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:03,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:03,591 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 00:16:03,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77143883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:03,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:03,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:16:03,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555600887] [2021-06-06 00:16:03,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:03,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:03,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:03,592 INFO L87 Difference]: Start difference. First operand 7707 states and 28981 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 00:16:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:03,956 INFO L93 Difference]: Finished difference Result 10234 states and 36622 transitions. [2021-06-06 00:16:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:16:03,957 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 00:16:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:03,974 INFO L225 Difference]: With dead ends: 10234 [2021-06-06 00:16:03,974 INFO L226 Difference]: Without dead ends: 10234 [2021-06-06 00:16:03,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 206.0ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-06 00:16:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2021-06-06 00:16:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 7653. [2021-06-06 00:16:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.753659174072138) internal successors, (28723), 7652 states have internal predecessors, (28723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 28723 transitions. [2021-06-06 00:16:04,112 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 28723 transitions. Word has length 28 [2021-06-06 00:16:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:04,112 INFO L482 AbstractCegarLoop]: Abstraction has 7653 states and 28723 transitions. [2021-06-06 00:16:04,112 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 00:16:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 28723 transitions. [2021-06-06 00:16:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:04,122 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:04,123 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 00:16:04,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4101 [2021-06-06 00:16:04,337 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:04,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1831555688, now seen corresponding path program 93 times [2021-06-06 00:16:04,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:04,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324453528] [2021-06-06 00:16:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:04,377 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 00:16:04,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:04,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324453528] [2021-06-06 00:16:04,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324453528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:04,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39442980] [2021-06-06 00:16:04,378 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 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 00:16:04,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 00:16:04,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:04,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:04,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:04,452 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 00:16:04,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39442980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:04,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:04,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:16:04,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597410807] [2021-06-06 00:16:04,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:04,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:04,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:04,452 INFO L87 Difference]: Start difference. First operand 7653 states and 28723 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 00:16:05,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:05,084 INFO L93 Difference]: Finished difference Result 13259 states and 46986 transitions. [2021-06-06 00:16:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:16:05,084 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 00:16:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:05,109 INFO L225 Difference]: With dead ends: 13259 [2021-06-06 00:16:05,109 INFO L226 Difference]: Without dead ends: 13247 [2021-06-06 00:16:05,110 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 335.5ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:16:05,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2021-06-06 00:16:05,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 7653. [2021-06-06 00:16:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.7526136957658127) internal successors, (28715), 7652 states have internal predecessors, (28715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 28715 transitions. [2021-06-06 00:16:05,295 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 28715 transitions. Word has length 28 [2021-06-06 00:16:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:05,295 INFO L482 AbstractCegarLoop]: Abstraction has 7653 states and 28715 transitions. [2021-06-06 00:16:05,295 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 00:16:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 28715 transitions. [2021-06-06 00:16:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:05,307 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:05,307 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 00:16:05,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4102,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:05,507 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:05,508 INFO L82 PathProgramCache]: Analyzing trace with hash 695130692, now seen corresponding path program 94 times [2021-06-06 00:16:05,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:05,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47677343] [2021-06-06 00:16:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:05,544 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 00:16:05,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:05,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47677343] [2021-06-06 00:16:05,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47677343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:05,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575390643] [2021-06-06 00:16:05,544 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 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 00:16:05,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:05,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:05,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:05,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:05,637 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 00:16:05,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575390643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:05,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:05,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:16:05,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275340022] [2021-06-06 00:16:05,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:05,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:05,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:05,638 INFO L87 Difference]: Start difference. First operand 7653 states and 28715 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 00:16:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:06,757 INFO L93 Difference]: Finished difference Result 20233 states and 70540 transitions. [2021-06-06 00:16:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-06 00:16:06,758 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 00:16:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:06,799 INFO L225 Difference]: With dead ends: 20233 [2021-06-06 00:16:06,799 INFO L226 Difference]: Without dead ends: 20233 [2021-06-06 00:16:06,800 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 675.9ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-06 00:16:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20233 states. [2021-06-06 00:16:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20233 to 10480. [2021-06-06 00:16:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10479 states have (on average 3.7973089035213285) internal successors, (39792), 10479 states have internal predecessors, (39792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 39792 transitions. [2021-06-06 00:16:07,097 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 39792 transitions. Word has length 28 [2021-06-06 00:16:07,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:07,098 INFO L482 AbstractCegarLoop]: Abstraction has 10480 states and 39792 transitions. [2021-06-06 00:16:07,098 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 00:16:07,098 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 39792 transitions. [2021-06-06 00:16:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:07,113 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:07,113 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 00:16:07,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4103 [2021-06-06 00:16:07,313 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:07,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:07,314 INFO L82 PathProgramCache]: Analyzing trace with hash 776506780, now seen corresponding path program 95 times [2021-06-06 00:16:07,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:07,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907458854] [2021-06-06 00:16:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:07,349 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 00:16:07,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:07,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907458854] [2021-06-06 00:16:07,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907458854] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:07,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647925787] [2021-06-06 00:16:07,349 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 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 00:16:07,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:16:07,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:07,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:07,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:07,431 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 00:16:07,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647925787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:07,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:07,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:16:07,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002048708] [2021-06-06 00:16:07,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:07,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:07,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:07,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:07,432 INFO L87 Difference]: Start difference. First operand 10480 states and 39792 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 00:16:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:08,432 INFO L93 Difference]: Finished difference Result 19460 states and 68525 transitions. [2021-06-06 00:16:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:16:08,432 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 00:16:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:08,471 INFO L225 Difference]: With dead ends: 19460 [2021-06-06 00:16:08,471 INFO L226 Difference]: Without dead ends: 19448 [2021-06-06 00:16:08,472 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 591.6ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:16:08,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2021-06-06 00:16:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 10294. [2021-06-06 00:16:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10294 states, 10293 states have (on average 3.8036529680365296) internal successors, (39151), 10293 states have internal predecessors, (39151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10294 states to 10294 states and 39151 transitions. [2021-06-06 00:16:08,766 INFO L78 Accepts]: Start accepts. Automaton has 10294 states and 39151 transitions. Word has length 28 [2021-06-06 00:16:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:08,766 INFO L482 AbstractCegarLoop]: Abstraction has 10294 states and 39151 transitions. [2021-06-06 00:16:08,766 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 00:16:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 10294 states and 39151 transitions. [2021-06-06 00:16:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:08,781 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:08,781 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 00:16:08,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4104,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:08,981 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash -738585192, now seen corresponding path program 96 times [2021-06-06 00:16:08,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:08,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401285712] [2021-06-06 00:16:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:09,019 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 00:16:09,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:09,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401285712] [2021-06-06 00:16:09,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401285712] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:09,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248973097] [2021-06-06 00:16:09,019 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 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 00:16:09,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:16:09,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:09,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:09,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:09,102 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 00:16:09,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248973097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:09,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:09,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:16:09,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964385600] [2021-06-06 00:16:09,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:09,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:09,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:09,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:09,102 INFO L87 Difference]: Start difference. First operand 10294 states and 39151 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 00:16:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:10,050 INFO L93 Difference]: Finished difference Result 19263 states and 67830 transitions. [2021-06-06 00:16:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:16:10,050 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 00:16:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:10,085 INFO L225 Difference]: With dead ends: 19263 [2021-06-06 00:16:10,085 INFO L226 Difference]: Without dead ends: 19227 [2021-06-06 00:16:10,085 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 525.0ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:16:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19227 states. [2021-06-06 00:16:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19227 to 10338. [2021-06-06 00:16:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10338 states, 10337 states have (on average 3.8017800135435813) internal successors, (39299), 10337 states have internal predecessors, (39299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10338 states to 10338 states and 39299 transitions. [2021-06-06 00:16:10,345 INFO L78 Accepts]: Start accepts. Automaton has 10338 states and 39299 transitions. Word has length 28 [2021-06-06 00:16:10,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:10,345 INFO L482 AbstractCegarLoop]: Abstraction has 10338 states and 39299 transitions. [2021-06-06 00:16:10,345 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 00:16:10,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10338 states and 39299 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: SelfDestructingSolverStorable4105,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:10,560 INFO L430 AbstractCegarLoop]: === Iteration 169 === [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 858541524, now seen corresponding path program 97 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 [358364774] [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 [358364774] [2021-06-06 00:16:10,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358364774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:10,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851070128] [2021-06-06 00:16:10,598 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 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 00:16:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:10,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:10,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:10,704 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 00:16:10,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851070128] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:10,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:10,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:16:10,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130700759] [2021-06-06 00:16:10,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:10,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:10,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:10,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:10,704 INFO L87 Difference]: Start difference. First operand 10338 states and 39299 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 00:16:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:11,996 INFO L93 Difference]: Finished difference Result 19164 states and 67607 transitions. [2021-06-06 00:16:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-06 00:16:11,996 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 00:16:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:12,034 INFO L225 Difference]: With dead ends: 19164 [2021-06-06 00:16:12,034 INFO L226 Difference]: Without dead ends: 19164 [2021-06-06 00:16:12,034 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 808.7ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:16:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19164 states. [2021-06-06 00:16:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19164 to 10534. [2021-06-06 00:16:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10534 states, 10533 states have (on average 3.79274660590525) internal successors, (39949), 10533 states have internal predecessors, (39949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 39949 transitions. [2021-06-06 00:16:12,299 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 39949 transitions. Word has length 28 [2021-06-06 00:16:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:12,300 INFO L482 AbstractCegarLoop]: Abstraction has 10534 states and 39949 transitions. [2021-06-06 00:16:12,300 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 00:16:12,300 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 39949 transitions. [2021-06-06 00:16:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:12,314 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:12,314 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 00:16:12,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4106,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:12,515 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:12,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1793386618, now seen corresponding path program 98 times [2021-06-06 00:16:12,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:12,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723651992] [2021-06-06 00:16:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:12,552 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 00:16:12,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:12,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723651992] [2021-06-06 00:16:12,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723651992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:12,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30681675] [2021-06-06 00:16:12,552 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 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 00:16:12,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:12,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:12,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:12,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:12,716 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 00:16:12,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30681675] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:12,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:12,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:16:12,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201243974] [2021-06-06 00:16:12,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:12,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:12,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:12,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:12,717 INFO L87 Difference]: Start difference. First operand 10534 states and 39949 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 00:16:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:13,951 INFO L93 Difference]: Finished difference Result 18787 states and 66570 transitions. [2021-06-06 00:16:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:16:13,951 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 00:16:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:13,989 INFO L225 Difference]: With dead ends: 18787 [2021-06-06 00:16:13,990 INFO L226 Difference]: Without dead ends: 18775 [2021-06-06 00:16:13,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 695.3ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:16:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-06-06 00:16:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 10416. [2021-06-06 00:16:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10416 states, 10415 states have (on average 3.797215554488718) internal successors, (39548), 10415 states have internal predecessors, (39548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10416 states to 10416 states and 39548 transitions. [2021-06-06 00:16:14,271 INFO L78 Accepts]: Start accepts. Automaton has 10416 states and 39548 transitions. Word has length 28 [2021-06-06 00:16:14,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:14,272 INFO L482 AbstractCegarLoop]: Abstraction has 10416 states and 39548 transitions. [2021-06-06 00:16:14,272 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 00:16:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10416 states and 39548 transitions. [2021-06-06 00:16:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:14,288 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:14,288 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 00:16:14,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4107,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:14,488 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:14,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:14,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1234123500, now seen corresponding path program 99 times [2021-06-06 00:16:14,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:14,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138106353] [2021-06-06 00:16:14,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:14,530 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 00:16:14,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:14,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138106353] [2021-06-06 00:16:14,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138106353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:14,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348381625] [2021-06-06 00:16:14,531 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 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 00:16:14,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:16:14,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:14,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:14,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:14,629 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 00:16:14,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348381625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:14,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:14,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:16:14,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421845730] [2021-06-06 00:16:14,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:14,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:14,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:14,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:14,630 INFO L87 Difference]: Start difference. First operand 10416 states and 39548 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 00:16:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:15,616 INFO L93 Difference]: Finished difference Result 18027 states and 64486 transitions. [2021-06-06 00:16:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:16:15,617 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 00:16:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:15,656 INFO L225 Difference]: With dead ends: 18027 [2021-06-06 00:16:15,656 INFO L226 Difference]: Without dead ends: 17991 [2021-06-06 00:16:15,656 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 553.3ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:16:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17991 states. [2021-06-06 00:16:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 10440. [2021-06-06 00:16:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10440 states, 10439 states have (on average 3.796149056423029) internal successors, (39628), 10439 states have internal predecessors, (39628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 39628 transitions. [2021-06-06 00:16:16,015 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 39628 transitions. Word has length 28 [2021-06-06 00:16:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:16,015 INFO L482 AbstractCegarLoop]: Abstraction has 10440 states and 39628 transitions. [2021-06-06 00:16:16,015 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 00:16:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 39628 transitions. [2021-06-06 00:16:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:16,032 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:16,032 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 00:16:16,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4108 [2021-06-06 00:16:16,233 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1584729920, now seen corresponding path program 100 times [2021-06-06 00:16:16,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:16,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561549643] [2021-06-06 00:16:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:16,268 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 00:16:16,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:16,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561549643] [2021-06-06 00:16:16,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561549643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:16,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364721449] [2021-06-06 00:16:16,269 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 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 00:16:16,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:16,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:16,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:16,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:16,403 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 00:16:16,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364721449] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:16,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:16,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:16:16,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268248418] [2021-06-06 00:16:16,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:16,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:16,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:16,404 INFO L87 Difference]: Start difference. First operand 10440 states and 39628 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 00:16:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:17,634 INFO L93 Difference]: Finished difference Result 26119 states and 92958 transitions. [2021-06-06 00:16:17,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-06 00:16:17,634 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 00:16:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:17,693 INFO L225 Difference]: With dead ends: 26119 [2021-06-06 00:16:17,693 INFO L226 Difference]: Without dead ends: 26119 [2021-06-06 00:16:17,694 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 712.6ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-06 00:16:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26119 states. [2021-06-06 00:16:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26119 to 10727. [2021-06-06 00:16:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 10726 states have (on average 3.821928025358941) internal successors, (40994), 10726 states have internal predecessors, (40994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 40994 transitions. [2021-06-06 00:16:18,081 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 40994 transitions. Word has length 28 [2021-06-06 00:16:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:18,082 INFO L482 AbstractCegarLoop]: Abstraction has 10727 states and 40994 transitions. [2021-06-06 00:16:18,082 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 00:16:18,082 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 40994 transitions. [2021-06-06 00:16:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:18,098 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:18,098 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 00:16:18,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4109,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:18,298 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1017777840, now seen corresponding path program 101 times [2021-06-06 00:16:18,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:18,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553690164] [2021-06-06 00:16:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:18,330 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 00:16:18,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:18,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553690164] [2021-06-06 00:16:18,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553690164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:18,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757222160] [2021-06-06 00:16:18,330 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 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 00:16:18,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:16:18,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:18,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:18,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:18,450 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 00:16:18,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757222160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:18,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:18,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:16:18,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602127039] [2021-06-06 00:16:18,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:18,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:18,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:18,451 INFO L87 Difference]: Start difference. First operand 10727 states and 40994 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 00:16:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:19,612 INFO L93 Difference]: Finished difference Result 25550 states and 91560 transitions. [2021-06-06 00:16:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-06 00:16:19,612 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 00:16:19,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:19,670 INFO L225 Difference]: With dead ends: 25550 [2021-06-06 00:16:19,670 INFO L226 Difference]: Without dead ends: 25550 [2021-06-06 00:16:19,671 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 692.3ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-06 00:16:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25550 states. [2021-06-06 00:16:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25550 to 10629. [2021-06-06 00:16:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10629 states, 10628 states have (on average 3.8091832894241624) internal successors, (40484), 10628 states have internal predecessors, (40484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10629 states to 10629 states and 40484 transitions. [2021-06-06 00:16:20,015 INFO L78 Accepts]: Start accepts. Automaton has 10629 states and 40484 transitions. Word has length 28 [2021-06-06 00:16:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:20,015 INFO L482 AbstractCegarLoop]: Abstraction has 10629 states and 40484 transitions. [2021-06-06 00:16:20,015 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 00:16:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10629 states and 40484 transitions. [2021-06-06 00:16:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:20,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:20,031 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 00:16:20,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4110 [2021-06-06 00:16:20,231 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1216329654, now seen corresponding path program 102 times [2021-06-06 00:16:20,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:20,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974387050] [2021-06-06 00:16:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:20,320 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 00:16:20,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:20,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974387050] [2021-06-06 00:16:20,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974387050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:20,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833703795] [2021-06-06 00:16:20,320 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 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 00:16:20,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:16:20,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:20,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:20,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:20,432 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 00:16:20,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833703795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:20,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:20,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:16:20,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397231944] [2021-06-06 00:16:20,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:20,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:20,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:20,433 INFO L87 Difference]: Start difference. First operand 10629 states and 40484 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 00:16:21,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:21,237 INFO L93 Difference]: Finished difference Result 20289 states and 72951 transitions. [2021-06-06 00:16:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:16:21,237 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 00:16:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:21,274 INFO L225 Difference]: With dead ends: 20289 [2021-06-06 00:16:21,274 INFO L226 Difference]: Without dead ends: 20289 [2021-06-06 00:16:21,274 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 491.4ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:16:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2021-06-06 00:16:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 10638. [2021-06-06 00:16:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10637 states have (on average 3.8081225909560965) internal successors, (40507), 10637 states have internal predecessors, (40507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 40507 transitions. [2021-06-06 00:16:21,516 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 40507 transitions. Word has length 28 [2021-06-06 00:16:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:21,516 INFO L482 AbstractCegarLoop]: Abstraction has 10638 states and 40507 transitions. [2021-06-06 00:16:21,516 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 00:16:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 40507 transitions. [2021-06-06 00:16:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:21,532 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:21,532 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 00:16:21,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4111,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:21,733 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:21,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:21,733 INFO L82 PathProgramCache]: Analyzing trace with hash 541607776, now seen corresponding path program 103 times [2021-06-06 00:16:21,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:21,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312654019] [2021-06-06 00:16:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:21,764 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 00:16:21,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:21,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312654019] [2021-06-06 00:16:21,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312654019] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:21,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927752764] [2021-06-06 00:16:21,765 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 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 00:16:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:21,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:21,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:21,871 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 00:16:21,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927752764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:21,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:21,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:16:21,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56753106] [2021-06-06 00:16:21,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:21,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:21,872 INFO L87 Difference]: Start difference. First operand 10638 states and 40507 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 00:16:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:22,603 INFO L93 Difference]: Finished difference Result 18838 states and 68311 transitions. [2021-06-06 00:16:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-06 00:16:22,604 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 00:16:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:22,638 INFO L225 Difference]: With dead ends: 18838 [2021-06-06 00:16:22,638 INFO L226 Difference]: Without dead ends: 18838 [2021-06-06 00:16:22,638 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 385.2ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:16:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2021-06-06 00:16:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 10650. [2021-06-06 00:16:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10650 states, 10649 states have (on average 3.807399755845619) internal successors, (40545), 10649 states have internal predecessors, (40545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 40545 transitions. [2021-06-06 00:16:22,886 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 40545 transitions. Word has length 28 [2021-06-06 00:16:22,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:22,886 INFO L482 AbstractCegarLoop]: Abstraction has 10650 states and 40545 transitions. [2021-06-06 00:16:22,887 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 00:16:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 40545 transitions. [2021-06-06 00:16:22,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:22,902 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:22,902 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 00:16:23,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-06 00:16:23,103 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:23,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2099999344, now seen corresponding path program 104 times [2021-06-06 00:16:23,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:23,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133112527] [2021-06-06 00:16:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:23,135 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 00:16:23,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:23,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133112527] [2021-06-06 00:16:23,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133112527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:23,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208629606] [2021-06-06 00:16:23,135 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 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 00:16:23,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:23,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:23,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:23,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:23,256 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 00:16:23,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208629606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:23,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:23,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:16:23,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531459918] [2021-06-06 00:16:23,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:23,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:23,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:23,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:23,257 INFO L87 Difference]: Start difference. First operand 10650 states and 40545 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 00:16:24,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:24,269 INFO L93 Difference]: Finished difference Result 19442 states and 70046 transitions. [2021-06-06 00:16:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-06 00:16:24,270 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 00:16:24,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:24,310 INFO L225 Difference]: With dead ends: 19442 [2021-06-06 00:16:24,310 INFO L226 Difference]: Without dead ends: 19442 [2021-06-06 00:16:24,311 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 627.0ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-06 00:16:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19442 states. [2021-06-06 00:16:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19442 to 10758. [2021-06-06 00:16:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 10757 states have (on average 3.8002231105326763) internal successors, (40879), 10757 states have internal predecessors, (40879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 40879 transitions. [2021-06-06 00:16:24,667 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 40879 transitions. Word has length 28 [2021-06-06 00:16:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:24,667 INFO L482 AbstractCegarLoop]: Abstraction has 10758 states and 40879 transitions. [2021-06-06 00:16:24,667 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 00:16:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 40879 transitions. [2021-06-06 00:16:24,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:24,684 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:24,684 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 00:16:24,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4113,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:24,885 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash -456960190, now seen corresponding path program 105 times [2021-06-06 00:16:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:24,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922695517] [2021-06-06 00:16:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:24,919 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 00:16:24,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:24,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922695517] [2021-06-06 00:16:24,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922695517] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:24,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753308145] [2021-06-06 00:16:24,919 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 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 00:16:24,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:16:24,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:24,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:24,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:25,044 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 00:16:25,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753308145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:25,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:25,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:16:25,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436117974] [2021-06-06 00:16:25,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:25,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:25,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:25,045 INFO L87 Difference]: Start difference. First operand 10758 states and 40879 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 00:16:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:25,980 INFO L93 Difference]: Finished difference Result 19017 states and 68890 transitions. [2021-06-06 00:16:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:16:25,981 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 00:16:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:26,021 INFO L225 Difference]: With dead ends: 19017 [2021-06-06 00:16:26,021 INFO L226 Difference]: Without dead ends: 19013 [2021-06-06 00:16:26,022 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 569.2ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:16:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19013 states. [2021-06-06 00:16:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19013 to 10684. [2021-06-06 00:16:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10684 states, 10683 states have (on average 3.804174857249836) internal successors, (40640), 10683 states have internal predecessors, (40640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10684 states to 10684 states and 40640 transitions. [2021-06-06 00:16:26,303 INFO L78 Accepts]: Start accepts. Automaton has 10684 states and 40640 transitions. Word has length 28 [2021-06-06 00:16:26,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:26,303 INFO L482 AbstractCegarLoop]: Abstraction has 10684 states and 40640 transitions. [2021-06-06 00:16:26,303 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 00:16:26,303 INFO L276 IsEmpty]: Start isEmpty. Operand 10684 states and 40640 transitions. [2021-06-06 00:16:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:26,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:26,320 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 00:16:26,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4114,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:26,520 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:26,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1748478926, now seen corresponding path program 106 times [2021-06-06 00:16:26,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:26,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559953282] [2021-06-06 00:16:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:26,557 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 00:16:26,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:26,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559953282] [2021-06-06 00:16:26,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559953282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:26,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451076475] [2021-06-06 00:16:26,558 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 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 00:16:26,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:26,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:26,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:26,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:26,668 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 00:16:26,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451076475] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:26,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:26,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:26,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462999609] [2021-06-06 00:16:26,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:26,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:26,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:26,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:26,669 INFO L87 Difference]: Start difference. First operand 10684 states and 40640 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 00:16:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:27,687 INFO L93 Difference]: Finished difference Result 18448 states and 66382 transitions. [2021-06-06 00:16:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:16:27,689 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 00:16:27,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:27,731 INFO L225 Difference]: With dead ends: 18448 [2021-06-06 00:16:27,731 INFO L226 Difference]: Without dead ends: 18448 [2021-06-06 00:16:27,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 605.1ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:16:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2021-06-06 00:16:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 10911. [2021-06-06 00:16:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10911 states, 10910 states have (on average 3.807332722273144) internal successors, (41538), 10910 states have internal predecessors, (41538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 41538 transitions. [2021-06-06 00:16:28,057 INFO L78 Accepts]: Start accepts. Automaton has 10911 states and 41538 transitions. Word has length 28 [2021-06-06 00:16:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:28,057 INFO L482 AbstractCegarLoop]: Abstraction has 10911 states and 41538 transitions. [2021-06-06 00:16:28,057 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 00:16:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 10911 states and 41538 transitions. [2021-06-06 00:16:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:28,072 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:28,072 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 00:16:28,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4115,176 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:28,273 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:28,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1366168690, now seen corresponding path program 107 times [2021-06-06 00:16:28,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:28,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777602604] [2021-06-06 00:16:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:28,310 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 00:16:28,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:28,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777602604] [2021-06-06 00:16:28,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777602604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:28,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342537756] [2021-06-06 00:16:28,310 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 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 00:16:28,333 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-06 00:16:28,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:28,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:28,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:28,417 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 00:16:28,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342537756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:28,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:28,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:16:28,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141571211] [2021-06-06 00:16:28,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:28,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:28,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:28,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:28,418 INFO L87 Difference]: Start difference. First operand 10911 states and 41538 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 00:16:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:29,297 INFO L93 Difference]: Finished difference Result 18161 states and 65584 transitions. [2021-06-06 00:16:29,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:16:29,298 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 00:16:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:29,335 INFO L225 Difference]: With dead ends: 18161 [2021-06-06 00:16:29,335 INFO L226 Difference]: Without dead ends: 18149 [2021-06-06 00:16:29,336 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 513.4ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:16:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2021-06-06 00:16:29,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 11013. [2021-06-06 00:16:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11013 states, 11012 states have (on average 3.801398474391573) internal successors, (41861), 11012 states have internal predecessors, (41861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 41861 transitions. [2021-06-06 00:16:29,605 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 41861 transitions. Word has length 28 [2021-06-06 00:16:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:29,605 INFO L482 AbstractCegarLoop]: Abstraction has 11013 states and 41861 transitions. [2021-06-06 00:16:29,605 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 00:16:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 41861 transitions. [2021-06-06 00:16:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:29,620 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:29,620 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 00:16:29,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4116,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:29,820 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:29,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:29,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1561241668, now seen corresponding path program 70 times [2021-06-06 00:16:29,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:29,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934215261] [2021-06-06 00:16:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:29,869 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 00:16:29,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:29,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934215261] [2021-06-06 00:16:29,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934215261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:29,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95509432] [2021-06-06 00:16:29,869 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 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 00:16:29,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:29,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:29,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:29,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:29,964 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 00:16:29,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95509432] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:29,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:29,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:16:29,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574870748] [2021-06-06 00:16:29,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:29,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:29,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:29,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:29,965 INFO L87 Difference]: Start difference. First operand 11013 states and 41861 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 00:16:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:30,362 INFO L93 Difference]: Finished difference Result 15676 states and 57990 transitions. [2021-06-06 00:16:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 00:16:30,362 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 00:16:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:30,395 INFO L225 Difference]: With dead ends: 15676 [2021-06-06 00:16:30,395 INFO L226 Difference]: Without dead ends: 15676 [2021-06-06 00:16:30,395 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 236.8ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:16:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15676 states. [2021-06-06 00:16:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15676 to 11085. [2021-06-06 00:16:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11085 states, 11084 states have (on average 3.7969144713099965) internal successors, (42085), 11084 states have internal predecessors, (42085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 42085 transitions. [2021-06-06 00:16:30,670 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 42085 transitions. Word has length 28 [2021-06-06 00:16:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:30,670 INFO L482 AbstractCegarLoop]: Abstraction has 11085 states and 42085 transitions. [2021-06-06 00:16:30,670 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 00:16:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 42085 transitions. [2021-06-06 00:16:30,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:30,686 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:30,686 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 00:16:30,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4117 [2021-06-06 00:16:30,887 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:30,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:30,887 INFO L82 PathProgramCache]: Analyzing trace with hash 963219036, now seen corresponding path program 71 times [2021-06-06 00:16:30,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:30,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695178293] [2021-06-06 00:16:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:30,918 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 00:16:30,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:30,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695178293] [2021-06-06 00:16:30,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695178293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:30,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44495552] [2021-06-06 00:16:30,918 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 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 00:16:30,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:16:30,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:30,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:30,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:30,997 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 00:16:30,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44495552] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:30,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:30,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:16:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657579925] [2021-06-06 00:16:30,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:30,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:30,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:30,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:30,998 INFO L87 Difference]: Start difference. First operand 11085 states and 42085 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 00:16:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:31,465 INFO L93 Difference]: Finished difference Result 16651 states and 60827 transitions. [2021-06-06 00:16:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:16:31,465 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 00:16:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:31,495 INFO L225 Difference]: With dead ends: 16651 [2021-06-06 00:16:31,495 INFO L226 Difference]: Without dead ends: 16651 [2021-06-06 00:16:31,495 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 260.4ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:16:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16651 states. [2021-06-06 00:16:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16651 to 11413. [2021-06-06 00:16:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 3.7797932001402033) internal successors, (43135), 11412 states have internal predecessors, (43135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:31,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 43135 transitions. [2021-06-06 00:16:31,737 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 43135 transitions. Word has length 28 [2021-06-06 00:16:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:31,737 INFO L482 AbstractCegarLoop]: Abstraction has 11413 states and 43135 transitions. [2021-06-06 00:16:31,737 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 00:16:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 43135 transitions. [2021-06-06 00:16:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:31,753 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:31,753 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 00:16:31,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4118,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:31,954 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:31,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:31,954 INFO L82 PathProgramCache]: Analyzing trace with hash 918397894, now seen corresponding path program 72 times [2021-06-06 00:16:31,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:31,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265222999] [2021-06-06 00:16:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:31,987 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 00:16:31,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:31,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265222999] [2021-06-06 00:16:31,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265222999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:31,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183405313] [2021-06-06 00:16:31,988 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 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 00:16:32,014 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-06 00:16:32,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:32,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:32,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:32,064 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 00:16:32,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183405313] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:32,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:32,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:16:32,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737426557] [2021-06-06 00:16:32,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:32,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:32,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:32,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:32,066 INFO L87 Difference]: Start difference. First operand 11413 states and 43135 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 00:16:32,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:32,506 INFO L93 Difference]: Finished difference Result 16138 states and 59485 transitions. [2021-06-06 00:16:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 00:16:32,506 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 00:16:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:32,538 INFO L225 Difference]: With dead ends: 16138 [2021-06-06 00:16:32,539 INFO L226 Difference]: Without dead ends: 16130 [2021-06-06 00:16:32,539 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 233.4ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-06 00:16:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16130 states. [2021-06-06 00:16:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16130 to 11353. [2021-06-06 00:16:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 11352 states have (on average 3.781800563777308) internal successors, (42931), 11352 states have internal predecessors, (42931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 42931 transitions. [2021-06-06 00:16:32,771 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 42931 transitions. Word has length 28 [2021-06-06 00:16:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:32,772 INFO L482 AbstractCegarLoop]: Abstraction has 11353 states and 42931 transitions. [2021-06-06 00:16:32,772 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 00:16:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 42931 transitions. [2021-06-06 00:16:32,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:32,789 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:32,789 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 00:16:33,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4119,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:33,005 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:33,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1515734552, now seen corresponding path program 73 times [2021-06-06 00:16:33,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:33,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887006253] [2021-06-06 00:16:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:33,175 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 00:16:33,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:33,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887006253] [2021-06-06 00:16:33,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887006253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:33,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252046428] [2021-06-06 00:16:33,175 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 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 00:16:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:33,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:33,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:33,252 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 00:16:33,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252046428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:33,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:33,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:16:33,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825651476] [2021-06-06 00:16:33,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:33,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:33,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:33,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:33,253 INFO L87 Difference]: Start difference. First operand 11353 states and 42931 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 00:16:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:33,726 INFO L93 Difference]: Finished difference Result 16038 states and 59197 transitions. [2021-06-06 00:16:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-06 00:16:33,726 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 00:16:33,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:33,759 INFO L225 Difference]: With dead ends: 16038 [2021-06-06 00:16:33,759 INFO L226 Difference]: Without dead ends: 16026 [2021-06-06 00:16:33,759 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 377.5ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-06 00:16:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16026 states. [2021-06-06 00:16:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16026 to 11325. [2021-06-06 00:16:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11325 states, 11324 states have (on average 3.7826739667961853) internal successors, (42835), 11324 states have internal predecessors, (42835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 42835 transitions. [2021-06-06 00:16:33,999 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 42835 transitions. Word has length 28 [2021-06-06 00:16:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:33,999 INFO L482 AbstractCegarLoop]: Abstraction has 11325 states and 42835 transitions. [2021-06-06 00:16:33,999 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 00:16:33,999 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 42835 transitions. [2021-06-06 00:16:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:34,015 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:34,016 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 00:16:34,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4120 [2021-06-06 00:16:34,231 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:34,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:34,231 INFO L82 PathProgramCache]: Analyzing trace with hash 860325080, now seen corresponding path program 74 times [2021-06-06 00:16:34,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:34,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354328838] [2021-06-06 00:16:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:34,263 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 00:16:34,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:34,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354328838] [2021-06-06 00:16:34,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354328838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:34,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917782212] [2021-06-06 00:16:34,264 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 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 00:16:34,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:34,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:34,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:34,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:34,375 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 00:16:34,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917782212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:34,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:34,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:16:34,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686427523] [2021-06-06 00:16:34,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:34,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:34,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:34,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:34,376 INFO L87 Difference]: Start difference. First operand 11325 states and 42835 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 00:16:35,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:35,361 INFO L93 Difference]: Finished difference Result 21822 states and 77756 transitions. [2021-06-06 00:16:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:16:35,361 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 00:16:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:35,414 INFO L225 Difference]: With dead ends: 21822 [2021-06-06 00:16:35,414 INFO L226 Difference]: Without dead ends: 21822 [2021-06-06 00:16:35,414 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 532.8ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:16:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21822 states. [2021-06-06 00:16:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21822 to 11307. [2021-06-06 00:16:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 3.7813550327259864) internal successors, (42752), 11306 states have internal predecessors, (42752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 42752 transitions. [2021-06-06 00:16:35,711 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 42752 transitions. Word has length 28 [2021-06-06 00:16:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:35,712 INFO L482 AbstractCegarLoop]: Abstraction has 11307 states and 42752 transitions. [2021-06-06 00:16:35,712 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 00:16:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 42752 transitions. [2021-06-06 00:16:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:35,728 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:35,728 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 00:16:35,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4121,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:35,943 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:35,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1387096988, now seen corresponding path program 108 times [2021-06-06 00:16:35,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:35,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438664208] [2021-06-06 00:16:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:35,968 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 00:16:35,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:35,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438664208] [2021-06-06 00:16:35,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438664208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:35,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734425857] [2021-06-06 00:16:35,968 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 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 00:16:35,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:16:35,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:35,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:35,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:36,212 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 00:16:36,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734425857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:36,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:36,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:16:36,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879024032] [2021-06-06 00:16:36,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:36,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:36,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:36,213 INFO L87 Difference]: Start difference. First operand 11307 states and 42752 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 00:16:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:36,958 INFO L93 Difference]: Finished difference Result 17653 states and 63688 transitions. [2021-06-06 00:16:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-06 00:16:36,959 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 00:16:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:36,998 INFO L225 Difference]: With dead ends: 17653 [2021-06-06 00:16:36,998 INFO L226 Difference]: Without dead ends: 17640 [2021-06-06 00:16:36,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 518.5ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-06 00:16:37,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17640 states. [2021-06-06 00:16:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17640 to 12618. [2021-06-06 00:16:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12617 states have (on average 3.8484584291035904) internal successors, (48556), 12617 states have internal predecessors, (48556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 48556 transitions. [2021-06-06 00:16:37,342 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 48556 transitions. Word has length 28 [2021-06-06 00:16:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:37,342 INFO L482 AbstractCegarLoop]: Abstraction has 12618 states and 48556 transitions. [2021-06-06 00:16:37,342 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 00:16:37,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 48556 transitions. [2021-06-06 00:16:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:37,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:37,362 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, 1, 1] [2021-06-06 00:16:37,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4122 [2021-06-06 00:16:37,579 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2059509770, now seen corresponding path program 109 times [2021-06-06 00:16:37,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:37,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626591049] [2021-06-06 00:16:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:37,604 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 00:16:37,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:37,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626591049] [2021-06-06 00:16:37,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626591049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:37,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695451454] [2021-06-06 00:16:37,604 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 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 00:16:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:37,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:37,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:37,707 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 00:16:37,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695451454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:37,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:37,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-06 00:16:37,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200411285] [2021-06-06 00:16:37,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:37,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:37,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:37,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:37,710 INFO L87 Difference]: Start difference. First operand 12618 states and 48556 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 00:16:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:38,518 INFO L93 Difference]: Finished difference Result 17754 states and 63945 transitions. [2021-06-06 00:16:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:16:38,518 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 00:16:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:38,553 INFO L225 Difference]: With dead ends: 17754 [2021-06-06 00:16:38,553 INFO L226 Difference]: Without dead ends: 17748 [2021-06-06 00:16:38,554 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 431.1ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:16:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17748 states. [2021-06-06 00:16:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17748 to 12591. [2021-06-06 00:16:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12591 states, 12590 states have (on average 3.8476568705321683) internal successors, (48442), 12590 states have internal predecessors, (48442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12591 states to 12591 states and 48442 transitions. [2021-06-06 00:16:38,841 INFO L78 Accepts]: Start accepts. Automaton has 12591 states and 48442 transitions. Word has length 28 [2021-06-06 00:16:38,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:38,842 INFO L482 AbstractCegarLoop]: Abstraction has 12591 states and 48442 transitions. [2021-06-06 00:16:38,842 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 00:16:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12591 states and 48442 transitions. [2021-06-06 00:16:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:38,860 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:38,860 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 00:16:39,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4123 [2021-06-06 00:16:39,061 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:39,061 INFO L82 PathProgramCache]: Analyzing trace with hash 244170948, now seen corresponding path program 110 times [2021-06-06 00:16:39,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:39,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735905978] [2021-06-06 00:16:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:39,085 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 00:16:39,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:39,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735905978] [2021-06-06 00:16:39,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735905978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:39,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711166555] [2021-06-06 00:16:39,085 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 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 00:16:39,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:39,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:39,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:39,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:39,177 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 00:16:39,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711166555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:39,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:39,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:16:39,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114011946] [2021-06-06 00:16:39,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:39,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:39,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:39,178 INFO L87 Difference]: Start difference. First operand 12591 states and 48442 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 00:16:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:39,776 INFO L93 Difference]: Finished difference Result 19810 states and 71449 transitions. [2021-06-06 00:16:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:16:39,776 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 00:16:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:39,819 INFO L225 Difference]: With dead ends: 19810 [2021-06-06 00:16:39,819 INFO L226 Difference]: Without dead ends: 19797 [2021-06-06 00:16:39,819 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 296.3ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:16:39,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19797 states. [2021-06-06 00:16:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19797 to 12651. [2021-06-06 00:16:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12651 states, 12650 states have (on average 3.8523320158102767) internal successors, (48732), 12650 states have internal predecessors, (48732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12651 states to 12651 states and 48732 transitions. [2021-06-06 00:16:40,152 INFO L78 Accepts]: Start accepts. Automaton has 12651 states and 48732 transitions. Word has length 28 [2021-06-06 00:16:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:40,152 INFO L482 AbstractCegarLoop]: Abstraction has 12651 states and 48732 transitions. [2021-06-06 00:16:40,152 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 00:16:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 12651 states and 48732 transitions. [2021-06-06 00:16:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:40,170 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:40,171 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 00:16:40,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4124,185 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:40,371 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:40,371 INFO L82 PathProgramCache]: Analyzing trace with hash -438573382, now seen corresponding path program 111 times [2021-06-06 00:16:40,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:40,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799569476] [2021-06-06 00:16:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:40,395 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 00:16:40,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:40,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799569476] [2021-06-06 00:16:40,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799569476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:40,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797771788] [2021-06-06 00:16:40,396 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 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 00:16:40,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:16:40,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:40,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:40,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:40,490 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 00:16:40,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797771788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:40,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:40,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-06 00:16:40,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524178806] [2021-06-06 00:16:40,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:40,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:40,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:40,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:40,491 INFO L87 Difference]: Start difference. First operand 12651 states and 48732 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 00:16:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:41,123 INFO L93 Difference]: Finished difference Result 20959 states and 75039 transitions. [2021-06-06 00:16:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-06 00:16:41,124 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 00:16:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:41,165 INFO L225 Difference]: With dead ends: 20959 [2021-06-06 00:16:41,165 INFO L226 Difference]: Without dead ends: 20959 [2021-06-06 00:16:41,165 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 350.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:16:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20959 states. [2021-06-06 00:16:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20959 to 12667. [2021-06-06 00:16:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12667 states, 12666 states have (on average 3.849281541133744) internal successors, (48755), 12666 states have internal predecessors, (48755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12667 states to 12667 states and 48755 transitions. [2021-06-06 00:16:41,481 INFO L78 Accepts]: Start accepts. Automaton has 12667 states and 48755 transitions. Word has length 28 [2021-06-06 00:16:41,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:41,481 INFO L482 AbstractCegarLoop]: Abstraction has 12667 states and 48755 transitions. [2021-06-06 00:16:41,481 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 00:16:41,481 INFO L276 IsEmpty]: Start isEmpty. Operand 12667 states and 48755 transitions. [2021-06-06 00:16:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:41,500 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:41,501 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 00:16:41,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4125,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:41,701 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash -362417666, now seen corresponding path program 75 times [2021-06-06 00:16:41,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:41,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240166708] [2021-06-06 00:16:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:41,731 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 00:16:41,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:41,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240166708] [2021-06-06 00:16:41,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240166708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:41,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695296271] [2021-06-06 00:16:41,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:16:41,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-06 00:16:41,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:41,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:41,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:41,821 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 00:16:41,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695296271] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:41,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:41,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:16:41,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830644763] [2021-06-06 00:16:41,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:41,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:41,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:41,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:41,822 INFO L87 Difference]: Start difference. First operand 12667 states and 48755 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 00:16:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:42,659 INFO L93 Difference]: Finished difference Result 22039 states and 80934 transitions. [2021-06-06 00:16:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-06 00:16:42,660 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 00:16:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:42,707 INFO L225 Difference]: With dead ends: 22039 [2021-06-06 00:16:42,707 INFO L226 Difference]: Without dead ends: 22035 [2021-06-06 00:16:42,708 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 478.1ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:16:42,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22035 states. [2021-06-06 00:16:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22035 to 12921. [2021-06-06 00:16:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12921 states, 12920 states have (on average 3.8388544891640866) internal successors, (49598), 12920 states have internal predecessors, (49598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12921 states to 12921 states and 49598 transitions. [2021-06-06 00:16:43,121 INFO L78 Accepts]: Start accepts. Automaton has 12921 states and 49598 transitions. Word has length 28 [2021-06-06 00:16:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:43,121 INFO L482 AbstractCegarLoop]: Abstraction has 12921 states and 49598 transitions. [2021-06-06 00:16:43,121 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 00:16:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12921 states and 49598 transitions. [2021-06-06 00:16:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:43,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:43,143 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 00:16:43,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4126,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:43,344 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 502966272, now seen corresponding path program 112 times [2021-06-06 00:16:43,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:43,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783775158] [2021-06-06 00:16:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:43,378 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 00:16:43,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:43,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783775158] [2021-06-06 00:16:43,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783775158] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:43,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410078801] [2021-06-06 00:16:43,378 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 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 00:16:43,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:43,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:43,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:43,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:43,468 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 00:16:43,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410078801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:43,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:43,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:16:43,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785945152] [2021-06-06 00:16:43,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:43,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:43,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:43,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:43,469 INFO L87 Difference]: Start difference. First operand 12921 states and 49598 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 00:16:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:44,045 INFO L93 Difference]: Finished difference Result 18745 states and 68634 transitions. [2021-06-06 00:16:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-06 00:16:44,045 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 00:16:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:44,084 INFO L225 Difference]: With dead ends: 18745 [2021-06-06 00:16:44,084 INFO L226 Difference]: Without dead ends: 18722 [2021-06-06 00:16:44,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 306.8ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-06 00:16:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18722 states. [2021-06-06 00:16:44,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18722 to 13216. [2021-06-06 00:16:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13216 states, 13215 states have (on average 3.855996973136587) internal successors, (50957), 13215 states have internal predecessors, (50957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13216 states to 13216 states and 50957 transitions. [2021-06-06 00:16:44,356 INFO L78 Accepts]: Start accepts. Automaton has 13216 states and 50957 transitions. Word has length 28 [2021-06-06 00:16:44,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:44,356 INFO L482 AbstractCegarLoop]: Abstraction has 13216 states and 50957 transitions. [2021-06-06 00:16:44,356 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 00:16:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 13216 states and 50957 transitions. [2021-06-06 00:16:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:44,376 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:44,376 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 00:16:44,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4127,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:44,577 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:44,577 INFO L82 PathProgramCache]: Analyzing trace with hash -179778058, now seen corresponding path program 113 times [2021-06-06 00:16:44,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:44,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960912334] [2021-06-06 00:16:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:44,605 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 00:16:44,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:44,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960912334] [2021-06-06 00:16:44,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960912334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:44,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281006215] [2021-06-06 00:16:44,606 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 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 00:16:44,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:16:44,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:44,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:44,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:44,698 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 00:16:44,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281006215] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:44,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:44,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:16:44,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282838486] [2021-06-06 00:16:44,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:44,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:44,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:44,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:44,699 INFO L87 Difference]: Start difference. First operand 13216 states and 50957 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 00:16:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:45,345 INFO L93 Difference]: Finished difference Result 18738 states and 67728 transitions. [2021-06-06 00:16:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:16:45,345 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 00:16:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:45,381 INFO L225 Difference]: With dead ends: 18738 [2021-06-06 00:16:45,381 INFO L226 Difference]: Without dead ends: 18738 [2021-06-06 00:16:45,381 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 372.5ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:16:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2021-06-06 00:16:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 13171. [2021-06-06 00:16:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13171 states, 13170 states have (on average 3.847835990888383) internal successors, (50676), 13170 states have internal predecessors, (50676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13171 states to 13171 states and 50676 transitions. [2021-06-06 00:16:45,680 INFO L78 Accepts]: Start accepts. Automaton has 13171 states and 50676 transitions. Word has length 28 [2021-06-06 00:16:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:45,680 INFO L482 AbstractCegarLoop]: Abstraction has 13171 states and 50676 transitions. [2021-06-06 00:16:45,680 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 00:16:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13171 states and 50676 transitions. [2021-06-06 00:16:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:45,702 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:45,702 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 00:16:45,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4128,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:45,903 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:45,904 INFO L82 PathProgramCache]: Analyzing trace with hash -499896522, now seen corresponding path program 114 times [2021-06-06 00:16:45,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:45,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413236777] [2021-06-06 00:16:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:45,932 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 00:16:45,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:45,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413236777] [2021-06-06 00:16:45,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413236777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:45,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971760337] [2021-06-06 00:16:45,933 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 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 00:16:45,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-06 00:16:45,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:45,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:45,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:46,021 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 00:16:46,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971760337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:46,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:46,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:16:46,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545337008] [2021-06-06 00:16:46,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:16:46,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:46,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:16:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:16:46,021 INFO L87 Difference]: Start difference. First operand 13171 states and 50676 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 00:16:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:46,654 INFO L93 Difference]: Finished difference Result 20089 states and 73010 transitions. [2021-06-06 00:16:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:16:46,655 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 00:16:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:46,696 INFO L225 Difference]: With dead ends: 20089 [2021-06-06 00:16:46,696 INFO L226 Difference]: Without dead ends: 20089 [2021-06-06 00:16:46,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 358.1ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:16:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2021-06-06 00:16:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 13878. [2021-06-06 00:16:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13878 states, 13877 states have (on average 3.834186063270159) internal successors, (53207), 13877 states have internal predecessors, (53207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13878 states to 13878 states and 53207 transitions. [2021-06-06 00:16:46,997 INFO L78 Accepts]: Start accepts. Automaton has 13878 states and 53207 transitions. Word has length 28 [2021-06-06 00:16:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:46,997 INFO L482 AbstractCegarLoop]: Abstraction has 13878 states and 53207 transitions. [2021-06-06 00:16:46,997 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 00:16:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13878 states and 53207 transitions. [2021-06-06 00:16:47,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:47,017 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:47,017 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 00:16:47,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4129 [2021-06-06 00:16:47,220 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash 389506442, now seen corresponding path program 115 times [2021-06-06 00:16:47,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:47,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615910785] [2021-06-06 00:16:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:47,249 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 00:16:47,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:47,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615910785] [2021-06-06 00:16:47,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615910785] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:47,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017486347] [2021-06-06 00:16:47,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:16:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:47,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:47,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:47,343 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 00:16:47,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017486347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:47,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:47,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:16:47,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506773703] [2021-06-06 00:16:47,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:16:47,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:47,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:16:47,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:16:47,344 INFO L87 Difference]: Start difference. First operand 13878 states and 53207 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 00:16:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:48,118 INFO L93 Difference]: Finished difference Result 22502 states and 80640 transitions. [2021-06-06 00:16:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:16:48,119 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 00:16:48,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:48,171 INFO L225 Difference]: With dead ends: 22502 [2021-06-06 00:16:48,171 INFO L226 Difference]: Without dead ends: 22502 [2021-06-06 00:16:48,172 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 423.0ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-06 00:16:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2021-06-06 00:16:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 14104. [2021-06-06 00:16:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14104 states, 14103 states have (on average 3.8464156562433525) internal successors, (54246), 14103 states have internal predecessors, (54246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14104 states to 14104 states and 54246 transitions. [2021-06-06 00:16:48,519 INFO L78 Accepts]: Start accepts. Automaton has 14104 states and 54246 transitions. Word has length 28 [2021-06-06 00:16:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:48,520 INFO L482 AbstractCegarLoop]: Abstraction has 14104 states and 54246 transitions. [2021-06-06 00:16:48,520 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 00:16:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14104 states and 54246 transitions. [2021-06-06 00:16:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:48,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:48,539 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 00:16:48,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4130 [2021-06-06 00:16:48,740 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:48,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:48,740 INFO L82 PathProgramCache]: Analyzing trace with hash -933026596, now seen corresponding path program 76 times [2021-06-06 00:16:48,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:48,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731144630] [2021-06-06 00:16:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:48,780 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 00:16:48,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:48,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731144630] [2021-06-06 00:16:48,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731144630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:48,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362655692] [2021-06-06 00:16:48,780 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 00:16:48,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:48,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:48,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:48,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:48,897 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 00:16:48,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362655692] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:48,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:48,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:16:48,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062190847] [2021-06-06 00:16:48,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:48,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:48,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:48,898 INFO L87 Difference]: Start difference. First operand 14104 states and 54246 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 00:16:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:50,308 INFO L93 Difference]: Finished difference Result 39134 states and 140671 transitions. [2021-06-06 00:16:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:16:50,308 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 00:16:50,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:50,404 INFO L225 Difference]: With dead ends: 39134 [2021-06-06 00:16:50,404 INFO L226 Difference]: Without dead ends: 39134 [2021-06-06 00:16:50,405 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 819.8ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:16:50,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39134 states. [2021-06-06 00:16:50,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39134 to 15340. [2021-06-06 00:16:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 15339 states have (on average 3.892887411174131) internal successors, (59713), 15339 states have internal predecessors, (59713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:50,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 59713 transitions. [2021-06-06 00:16:50,960 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 59713 transitions. Word has length 28 [2021-06-06 00:16:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:50,960 INFO L482 AbstractCegarLoop]: Abstraction has 15340 states and 59713 transitions. [2021-06-06 00:16:50,960 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 00:16:50,960 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 59713 transitions. [2021-06-06 00:16:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:50,981 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:50,981 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 00:16:51,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4131,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:51,182 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:51,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash -366074516, now seen corresponding path program 77 times [2021-06-06 00:16:51,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:51,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868743924] [2021-06-06 00:16:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:51,214 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 00:16:51,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:51,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868743924] [2021-06-06 00:16:51,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868743924] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:51,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912498369] [2021-06-06 00:16:51,214 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 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 00:16:51,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:16:51,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:51,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:51,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:51,349 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 00:16:51,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912498369] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:51,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:51,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:16:51,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708732151] [2021-06-06 00:16:51,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:51,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:51,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:51,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:51,350 INFO L87 Difference]: Start difference. First operand 15340 states and 59713 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 00:16:52,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:52,730 INFO L93 Difference]: Finished difference Result 38160 states and 138109 transitions. [2021-06-06 00:16:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:16:52,731 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 00:16:52,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:52,818 INFO L225 Difference]: With dead ends: 38160 [2021-06-06 00:16:52,818 INFO L226 Difference]: Without dead ends: 38160 [2021-06-06 00:16:52,819 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 835.0ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-06 00:16:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38160 states. [2021-06-06 00:16:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38160 to 15314. [2021-06-06 00:16:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 3.88930973682492) internal successors, (59557), 15313 states have internal predecessors, (59557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 59557 transitions. [2021-06-06 00:16:53,402 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 59557 transitions. Word has length 28 [2021-06-06 00:16:53,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:53,403 INFO L482 AbstractCegarLoop]: Abstraction has 15314 states and 59557 transitions. [2021-06-06 00:16:53,403 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 00:16:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 59557 transitions. [2021-06-06 00:16:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:53,424 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:53,424 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 00:16:53,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4132 [2021-06-06 00:16:53,633 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash -648300864, now seen corresponding path program 116 times [2021-06-06 00:16:53,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:53,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425050998] [2021-06-06 00:16:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:53,664 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 00:16:53,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:53,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425050998] [2021-06-06 00:16:53,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425050998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:53,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177447293] [2021-06-06 00:16:53,664 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 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 00:16:53,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:16:53,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:53,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:53,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:53,737 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 00:16:53,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177447293] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:53,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:53,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:16:53,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147121501] [2021-06-06 00:16:53,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:16:53,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:16:53,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:16:53,738 INFO L87 Difference]: Start difference. First operand 15314 states and 59557 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 00:16:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:54,017 INFO L93 Difference]: Finished difference Result 23675 states and 90680 transitions. [2021-06-06 00:16:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-06 00:16:54,017 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 00:16:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:54,075 INFO L225 Difference]: With dead ends: 23675 [2021-06-06 00:16:54,075 INFO L226 Difference]: Without dead ends: 23628 [2021-06-06 00:16:54,075 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-06 00:16:54,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23628 states. [2021-06-06 00:16:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23628 to 20433. [2021-06-06 00:16:54,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20433 states, 20432 states have (on average 3.903680501174628) internal successors, (79760), 20432 states have internal predecessors, (79760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 79760 transitions. [2021-06-06 00:16:54,476 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 79760 transitions. Word has length 28 [2021-06-06 00:16:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:54,476 INFO L482 AbstractCegarLoop]: Abstraction has 20433 states and 79760 transitions. [2021-06-06 00:16:54,477 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 00:16:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 79760 transitions. [2021-06-06 00:16:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:54,508 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:54,508 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 00:16:54,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4133 [2021-06-06 00:16:54,708 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:54,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1261765878, now seen corresponding path program 117 times [2021-06-06 00:16:54,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:54,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509922413] [2021-06-06 00:16:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:54,735 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 00:16:54,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:54,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509922413] [2021-06-06 00:16:54,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509922413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:54,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135905210] [2021-06-06 00:16:54,735 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 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 00:16:54,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:16:54,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:54,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:16:54,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:54,810 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 00:16:54,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135905210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:54,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:54,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-06 00:16:54,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075026410] [2021-06-06 00:16:54,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:16:54,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:54,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:16:54,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:16:54,811 INFO L87 Difference]: Start difference. First operand 20433 states and 79760 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 00:16:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:55,044 INFO L93 Difference]: Finished difference Result 23187 states and 88130 transitions. [2021-06-06 00:16:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:16:55,044 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 00:16:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:55,095 INFO L225 Difference]: With dead ends: 23187 [2021-06-06 00:16:55,095 INFO L226 Difference]: Without dead ends: 23187 [2021-06-06 00:16:55,095 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 89.0ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:16:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2021-06-06 00:16:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 19936. [2021-06-06 00:16:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19936 states, 19935 states have (on average 3.89204915976925) internal successors, (77588), 19935 states have internal predecessors, (77588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19936 states to 19936 states and 77588 transitions. [2021-06-06 00:16:55,624 INFO L78 Accepts]: Start accepts. Automaton has 19936 states and 77588 transitions. Word has length 28 [2021-06-06 00:16:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:55,624 INFO L482 AbstractCegarLoop]: Abstraction has 19936 states and 77588 transitions. [2021-06-06 00:16:55,624 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 00:16:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19936 states and 77588 transitions. [2021-06-06 00:16:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:55,659 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:55,659 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 00:16:55,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4134 [2021-06-06 00:16:55,861 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:55,861 INFO L82 PathProgramCache]: Analyzing trace with hash 310084440, now seen corresponding path program 118 times [2021-06-06 00:16:55,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:55,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603176606] [2021-06-06 00:16:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:55,901 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 00:16:55,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:55,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603176606] [2021-06-06 00:16:55,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603176606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:55,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570577022] [2021-06-06 00:16:55,902 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 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 00:16:55,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:16:55,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:55,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:55,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:56,019 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 00:16:56,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570577022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:56,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:56,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-06 00:16:56,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549821304] [2021-06-06 00:16:56,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:16:56,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:16:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:16:56,020 INFO L87 Difference]: Start difference. First operand 19936 states and 77588 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 00:16:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:56,961 INFO L93 Difference]: Finished difference Result 31776 states and 117695 transitions. [2021-06-06 00:16:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:16:56,962 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 00:16:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:57,044 INFO L225 Difference]: With dead ends: 31776 [2021-06-06 00:16:57,045 INFO L226 Difference]: Without dead ends: 31776 [2021-06-06 00:16:57,045 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 484.8ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-06 00:16:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31776 states. [2021-06-06 00:16:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31776 to 20002. [2021-06-06 00:16:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20002 states, 20001 states have (on average 3.8901054947252636) internal successors, (77806), 20001 states have internal predecessors, (77806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:16:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20002 states to 20002 states and 77806 transitions. [2021-06-06 00:16:57,555 INFO L78 Accepts]: Start accepts. Automaton has 20002 states and 77806 transitions. Word has length 28 [2021-06-06 00:16:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:16:57,555 INFO L482 AbstractCegarLoop]: Abstraction has 20002 states and 77806 transitions. [2021-06-06 00:16:57,555 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 00:16:57,555 INFO L276 IsEmpty]: Start isEmpty. Operand 20002 states and 77806 transitions. [2021-06-06 00:16:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:16:57,587 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:16:57,587 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 00:16:57,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4135,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:16:57,787 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:16:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:16:57,788 INFO L82 PathProgramCache]: Analyzing trace with hash -666234404, now seen corresponding path program 119 times [2021-06-06 00:16:57,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:16:57,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157812267] [2021-06-06 00:16:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:16:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:16:57,822 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 00:16:57,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:16:57,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157812267] [2021-06-06 00:16:57,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157812267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:57,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950341756] [2021-06-06 00:16:57,822 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 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 00:16:57,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:16:57,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:16:57,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:16:57,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:16:57,931 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 00:16:57,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950341756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:16:57,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:16:57,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:16:57,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190429211] [2021-06-06 00:16:57,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:16:57,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:16:57,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:16:57,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:16:57,932 INFO L87 Difference]: Start difference. First operand 20002 states and 77806 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 00:16:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:16:59,302 INFO L93 Difference]: Finished difference Result 40610 states and 148783 transitions. [2021-06-06 00:16:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:16:59,303 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 00:16:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:16:59,404 INFO L225 Difference]: With dead ends: 40610 [2021-06-06 00:16:59,405 INFO L226 Difference]: Without dead ends: 40610 [2021-06-06 00:16:59,405 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 817.0ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-06 00:16:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40610 states. [2021-06-06 00:17:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40610 to 20007. [2021-06-06 00:17:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20007 states, 20006 states have (on average 3.892182345296411) internal successors, (77867), 20006 states have internal predecessors, (77867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20007 states to 20007 states and 77867 transitions. [2021-06-06 00:17:00,101 INFO L78 Accepts]: Start accepts. Automaton has 20007 states and 77867 transitions. Word has length 28 [2021-06-06 00:17:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:00,101 INFO L482 AbstractCegarLoop]: Abstraction has 20007 states and 77867 transitions. [2021-06-06 00:17:00,101 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 00:17:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20007 states and 77867 transitions. [2021-06-06 00:17:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:00,133 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:00,134 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 00:17:00,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4136 [2021-06-06 00:17:00,334 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:00,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:00,334 INFO L82 PathProgramCache]: Analyzing trace with hash -99282324, now seen corresponding path program 120 times [2021-06-06 00:17:00,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:00,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682643163] [2021-06-06 00:17:00,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:00,368 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 00:17:00,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:00,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682643163] [2021-06-06 00:17:00,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682643163] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:00,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252377295] [2021-06-06 00:17:00,368 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 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 00:17:00,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:17:00,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:00,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:00,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:00,476 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 00:17:00,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252377295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:00,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:00,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-06 00:17:00,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944717896] [2021-06-06 00:17:00,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:17:00,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:00,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:17:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:17:00,477 INFO L87 Difference]: Start difference. First operand 20007 states and 77867 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 00:17:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:01,814 INFO L93 Difference]: Finished difference Result 40173 states and 147928 transitions. [2021-06-06 00:17:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-06 00:17:01,814 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 00:17:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:01,918 INFO L225 Difference]: With dead ends: 40173 [2021-06-06 00:17:01,919 INFO L226 Difference]: Without dead ends: 40173 [2021-06-06 00:17:01,919 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 789.1ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-06 00:17:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40173 states. [2021-06-06 00:17:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40173 to 19795. [2021-06-06 00:17:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19795 states, 19794 states have (on average 3.884308376275639) internal successors, (76886), 19794 states have internal predecessors, (76886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19795 states to 19795 states and 76886 transitions. [2021-06-06 00:17:02,497 INFO L78 Accepts]: Start accepts. Automaton has 19795 states and 76886 transitions. Word has length 28 [2021-06-06 00:17:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:02,497 INFO L482 AbstractCegarLoop]: Abstraction has 19795 states and 76886 transitions. [2021-06-06 00:17:02,497 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 00:17:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 19795 states and 76886 transitions. [2021-06-06 00:17:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:02,525 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:02,525 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 00:17:02,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4137,198 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:02,726 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 836856348, now seen corresponding path program 121 times [2021-06-06 00:17:02,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:02,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988153771] [2021-06-06 00:17:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:02,751 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 00:17:02,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:02,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988153771] [2021-06-06 00:17:02,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988153771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:02,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401768288] [2021-06-06 00:17:02,752 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 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 00:17:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:02,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:17:02,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:02,824 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 00:17:02,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401768288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:02,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:02,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:17:02,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795025597] [2021-06-06 00:17:02,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:17:02,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:02,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:17:02,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:17:02,824 INFO L87 Difference]: Start difference. First operand 19795 states and 76886 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 00:17:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:03,151 INFO L93 Difference]: Finished difference Result 29286 states and 109348 transitions. [2021-06-06 00:17:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-06 00:17:03,151 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 00:17:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:03,217 INFO L225 Difference]: With dead ends: 29286 [2021-06-06 00:17:03,217 INFO L226 Difference]: Without dead ends: 29269 [2021-06-06 00:17:03,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-06 00:17:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29269 states. [2021-06-06 00:17:03,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29269 to 20063. [2021-06-06 00:17:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 20062 states have (on average 3.8898414913767323) internal successors, (78038), 20062 states have internal predecessors, (78038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 78038 transitions. [2021-06-06 00:17:03,640 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 78038 transitions. Word has length 28 [2021-06-06 00:17:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:03,640 INFO L482 AbstractCegarLoop]: Abstraction has 20063 states and 78038 transitions. [2021-06-06 00:17:03,640 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 00:17:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 78038 transitions. [2021-06-06 00:17:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:03,673 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:03,673 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, 1, 1] [2021-06-06 00:17:03,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4138,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:03,876 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:03,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:03,877 INFO L82 PathProgramCache]: Analyzing trace with hash -306069692, now seen corresponding path program 122 times [2021-06-06 00:17:03,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:03,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177458049] [2021-06-06 00:17:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:03,902 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 00:17:03,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:03,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177458049] [2021-06-06 00:17:03,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177458049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:03,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038100818] [2021-06-06 00:17:03,902 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 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 00:17:03,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:17:03,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:03,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:17:03,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:03,980 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 00:17:03,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038100818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:03,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:03,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-06 00:17:03,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577772795] [2021-06-06 00:17:03,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:17:03,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:03,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:17:03,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:17:03,981 INFO L87 Difference]: Start difference. First operand 20063 states and 78038 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 00:17:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:04,244 INFO L93 Difference]: Finished difference Result 31067 states and 114897 transitions. [2021-06-06 00:17:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-06 00:17:04,244 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 00:17:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:04,318 INFO L225 Difference]: With dead ends: 31067 [2021-06-06 00:17:04,318 INFO L226 Difference]: Without dead ends: 31067 [2021-06-06 00:17:04,318 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-06 00:17:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2021-06-06 00:17:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 19732. [2021-06-06 00:17:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19732 states, 19731 states have (on average 3.874714915615022) internal successors, (76452), 19731 states have internal predecessors, (76452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19732 states to 19732 states and 76452 transitions. [2021-06-06 00:17:04,765 INFO L78 Accepts]: Start accepts. Automaton has 19732 states and 76452 transitions. Word has length 28 [2021-06-06 00:17:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:04,765 INFO L482 AbstractCegarLoop]: Abstraction has 19732 states and 76452 transitions. [2021-06-06 00:17:04,765 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 00:17:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 19732 states and 76452 transitions. [2021-06-06 00:17:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:04,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:04,793 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 00:17:04,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4139 [2021-06-06 00:17:04,993 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:04,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1652751258, now seen corresponding path program 123 times [2021-06-06 00:17:04,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:04,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644146727] [2021-06-06 00:17:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:05,027 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 00:17:05,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:05,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644146727] [2021-06-06 00:17:05,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644146727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:05,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110575918] [2021-06-06 00:17:05,028 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 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 00:17:05,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:17:05,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:05,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:05,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:05,140 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 00:17:05,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110575918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:05,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:05,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:17:05,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51456611] [2021-06-06 00:17:05,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:17:05,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:05,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:17:05,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:17:05,141 INFO L87 Difference]: Start difference. First operand 19732 states and 76452 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 00:17:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:05,891 INFO L93 Difference]: Finished difference Result 29306 states and 108910 transitions. [2021-06-06 00:17:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:17:05,892 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 00:17:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:05,962 INFO L225 Difference]: With dead ends: 29306 [2021-06-06 00:17:05,962 INFO L226 Difference]: Without dead ends: 29306 [2021-06-06 00:17:05,962 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 381.5ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-06 00:17:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29306 states. [2021-06-06 00:17:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29306 to 19780. [2021-06-06 00:17:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19780 states, 19779 states have (on average 3.8734010819556093) internal successors, (76612), 19779 states have internal predecessors, (76612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19780 states to 19780 states and 76612 transitions. [2021-06-06 00:17:06,536 INFO L78 Accepts]: Start accepts. Automaton has 19780 states and 76612 transitions. Word has length 28 [2021-06-06 00:17:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:06,536 INFO L482 AbstractCegarLoop]: Abstraction has 19780 states and 76612 transitions. [2021-06-06 00:17:06,536 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 00:17:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states and 76612 transitions. [2021-06-06 00:17:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:06,565 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:06,565 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 00:17:06,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4140,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:06,766 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:06,766 INFO L82 PathProgramCache]: Analyzing trace with hash -867837164, now seen corresponding path program 124 times [2021-06-06 00:17:06,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:06,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434340261] [2021-06-06 00:17:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:06,806 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 00:17:06,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:06,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434340261] [2021-06-06 00:17:06,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434340261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:06,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321429923] [2021-06-06 00:17:06,807 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 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 00:17:06,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:17:06,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:06,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:06,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:06,898 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 00:17:06,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321429923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:06,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:06,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:17:06,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996429463] [2021-06-06 00:17:06,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:17:06,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:06,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:17:06,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:17:06,899 INFO L87 Difference]: Start difference. First operand 19780 states and 76612 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 00:17:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:07,847 INFO L93 Difference]: Finished difference Result 30838 states and 113300 transitions. [2021-06-06 00:17:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-06 00:17:07,848 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 00:17:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:07,927 INFO L225 Difference]: With dead ends: 30838 [2021-06-06 00:17:07,927 INFO L226 Difference]: Without dead ends: 30838 [2021-06-06 00:17:07,928 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 522.9ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:17:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30838 states. [2021-06-06 00:17:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30838 to 20326. [2021-06-06 00:17:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20326 states, 20325 states have (on average 3.8521525215252153) internal successors, (78295), 20325 states have internal predecessors, (78295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20326 states to 20326 states and 78295 transitions. [2021-06-06 00:17:08,455 INFO L78 Accepts]: Start accepts. Automaton has 20326 states and 78295 transitions. Word has length 28 [2021-06-06 00:17:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:08,455 INFO L482 AbstractCegarLoop]: Abstraction has 20326 states and 78295 transitions. [2021-06-06 00:17:08,455 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 00:17:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 20326 states and 78295 transitions. [2021-06-06 00:17:08,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:08,487 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:08,487 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 00:17:08,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4141 [2021-06-06 00:17:08,691 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:08,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:08,691 INFO L82 PathProgramCache]: Analyzing trace with hash -912658306, now seen corresponding path program 125 times [2021-06-06 00:17:08,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:08,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697958536] [2021-06-06 00:17:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:08,725 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 00:17:08,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:08,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697958536] [2021-06-06 00:17:08,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697958536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:08,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737523180] [2021-06-06 00:17:08,726 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 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 00:17:08,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:17:08,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:08,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:08,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:08,813 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 00:17:08,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737523180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:08,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:08,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-06 00:17:08,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658147413] [2021-06-06 00:17:08,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:17:08,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:17:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:17:08,814 INFO L87 Difference]: Start difference. First operand 20326 states and 78295 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 00:17:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:09,656 INFO L93 Difference]: Finished difference Result 29955 states and 110977 transitions. [2021-06-06 00:17:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:17:09,656 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 00:17:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:09,723 INFO L225 Difference]: With dead ends: 29955 [2021-06-06 00:17:09,724 INFO L226 Difference]: Without dead ends: 29951 [2021-06-06 00:17:09,724 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 422.8ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:17:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29951 states. [2021-06-06 00:17:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29951 to 20218. [2021-06-06 00:17:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20218 states, 20217 states have (on average 3.854825147153386) internal successors, (77933), 20217 states have internal predecessors, (77933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20218 states to 20218 states and 77933 transitions. [2021-06-06 00:17:10,346 INFO L78 Accepts]: Start accepts. Automaton has 20218 states and 77933 transitions. Word has length 28 [2021-06-06 00:17:10,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:10,346 INFO L482 AbstractCegarLoop]: Abstraction has 20218 states and 77933 transitions. [2021-06-06 00:17:10,346 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 00:17:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20218 states and 77933 transitions. [2021-06-06 00:17:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:10,379 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:10,379 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 00:17:10,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4142,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:10,580 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash -47274368, now seen corresponding path program 126 times [2021-06-06 00:17:10,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:10,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885895184] [2021-06-06 00:17:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:10,608 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 00:17:10,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:10,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885895184] [2021-06-06 00:17:10,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885895184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:10,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701445086] [2021-06-06 00:17:10,608 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 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 00:17:10,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:17:10,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:10,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:17:10,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:10,685 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 00:17:10,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701445086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:10,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:10,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-06 00:17:10,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904567207] [2021-06-06 00:17:10,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:17:10,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:10,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:17:10,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:17:10,686 INFO L87 Difference]: Start difference. First operand 20218 states and 77933 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 00:17:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:10,918 INFO L93 Difference]: Finished difference Result 25214 states and 93817 transitions. [2021-06-06 00:17:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 00:17:10,919 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 00:17:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:10,978 INFO L225 Difference]: With dead ends: 25214 [2021-06-06 00:17:10,978 INFO L226 Difference]: Without dead ends: 25214 [2021-06-06 00:17:10,979 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:17:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25214 states. [2021-06-06 00:17:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25214 to 20528. [2021-06-06 00:17:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20528 states, 20527 states have (on average 3.8459589808544843) internal successors, (78946), 20527 states have internal predecessors, (78946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20528 states to 20528 states and 78946 transitions. [2021-06-06 00:17:11,401 INFO L78 Accepts]: Start accepts. Automaton has 20528 states and 78946 transitions. Word has length 28 [2021-06-06 00:17:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:11,401 INFO L482 AbstractCegarLoop]: Abstraction has 20528 states and 78946 transitions. [2021-06-06 00:17:11,401 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 00:17:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 20528 states and 78946 transitions. [2021-06-06 00:17:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:11,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:11,431 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 00:17:11,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4143 [2021-06-06 00:17:11,632 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:11,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:11,632 INFO L82 PathProgramCache]: Analyzing trace with hash 882925376, now seen corresponding path program 127 times [2021-06-06 00:17:11,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:11,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359382320] [2021-06-06 00:17:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:11,692 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 00:17:11,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:11,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359382320] [2021-06-06 00:17:11,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359382320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:11,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629781355] [2021-06-06 00:17:11,692 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 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 00:17:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:11,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:11,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:11,780 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 00:17:11,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629781355] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:11,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:11,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:17:11,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283048446] [2021-06-06 00:17:11,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:17:11,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:11,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:17:11,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:17:11,781 INFO L87 Difference]: Start difference. First operand 20528 states and 78946 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 00:17:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:12,541 INFO L93 Difference]: Finished difference Result 30964 states and 113417 transitions. [2021-06-06 00:17:12,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:17:12,541 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 00:17:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:12,610 INFO L225 Difference]: With dead ends: 30964 [2021-06-06 00:17:12,610 INFO L226 Difference]: Without dead ends: 30964 [2021-06-06 00:17:12,610 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 409.7ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-06 00:17:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30964 states. [2021-06-06 00:17:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30964 to 22146. [2021-06-06 00:17:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22146 states, 22145 states have (on average 3.8581169564235718) internal successors, (85438), 22145 states have internal predecessors, (85438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22146 states to 22146 states and 85438 transitions. [2021-06-06 00:17:13,093 INFO L78 Accepts]: Start accepts. Automaton has 22146 states and 85438 transitions. Word has length 28 [2021-06-06 00:17:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:13,093 INFO L482 AbstractCegarLoop]: Abstraction has 22146 states and 85438 transitions. [2021-06-06 00:17:13,093 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 00:17:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 22146 states and 85438 transitions. [2021-06-06 00:17:13,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:13,128 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:13,128 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 00:17:13,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4144,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:13,328 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash -956846952, now seen corresponding path program 128 times [2021-06-06 00:17:13,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:13,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752164566] [2021-06-06 00:17:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:13,361 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 00:17:13,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:13,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752164566] [2021-06-06 00:17:13,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752164566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:13,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938070362] [2021-06-06 00:17:13,362 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 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 00:17:13,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:17:13,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:13,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:13,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:13,438 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 00:17:13,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938070362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:13,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:13,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:17:13,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504235944] [2021-06-06 00:17:13,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:17:13,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:13,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:17:13,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:17:13,439 INFO L87 Difference]: Start difference. First operand 22146 states and 85438 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 00:17:14,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:14,055 INFO L93 Difference]: Finished difference Result 29203 states and 108883 transitions. [2021-06-06 00:17:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:17:14,056 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 00:17:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:14,119 INFO L225 Difference]: With dead ends: 29203 [2021-06-06 00:17:14,119 INFO L226 Difference]: Without dead ends: 29191 [2021-06-06 00:17:14,120 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 326.0ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-06 00:17:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29191 states. [2021-06-06 00:17:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29191 to 22298. [2021-06-06 00:17:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22298 states, 22297 states have (on average 3.8527156119657353) internal successors, (85904), 22297 states have internal predecessors, (85904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22298 states to 22298 states and 85904 transitions. [2021-06-06 00:17:14,713 INFO L78 Accepts]: Start accepts. Automaton has 22298 states and 85904 transitions. Word has length 28 [2021-06-06 00:17:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:14,714 INFO L482 AbstractCegarLoop]: Abstraction has 22298 states and 85904 transitions. [2021-06-06 00:17:14,714 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 00:17:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 22298 states and 85904 transitions. [2021-06-06 00:17:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:14,748 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:14,748 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 00:17:14,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4145 [2021-06-06 00:17:14,948 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:14,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:14,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1587630268, now seen corresponding path program 129 times [2021-06-06 00:17:14,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:14,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221756738] [2021-06-06 00:17:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:14,974 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 00:17:14,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:14,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221756738] [2021-06-06 00:17:14,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221756738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:14,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289953345] [2021-06-06 00:17:14,974 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 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 00:17:14,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:17:14,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:14,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-06 00:17:14,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:15,044 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 00:17:15,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289953345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:15,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:15,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-06 00:17:15,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235441989] [2021-06-06 00:17:15,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-06 00:17:15,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:15,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-06 00:17:15,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-06 00:17:15,045 INFO L87 Difference]: Start difference. First operand 22298 states and 85904 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 00:17:15,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:15,273 INFO L93 Difference]: Finished difference Result 25557 states and 96861 transitions. [2021-06-06 00:17:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-06 00:17:15,274 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 00:17:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:15,338 INFO L225 Difference]: With dead ends: 25557 [2021-06-06 00:17:15,338 INFO L226 Difference]: Without dead ends: 25557 [2021-06-06 00:17:15,338 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 88.6ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-06 00:17:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2021-06-06 00:17:15,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 23101. [2021-06-06 00:17:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23101 states, 23100 states have (on average 3.847748917748918) internal successors, (88883), 23100 states have internal predecessors, (88883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23101 states to 23101 states and 88883 transitions. [2021-06-06 00:17:15,788 INFO L78 Accepts]: Start accepts. Automaton has 23101 states and 88883 transitions. Word has length 28 [2021-06-06 00:17:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:15,788 INFO L482 AbstractCegarLoop]: Abstraction has 23101 states and 88883 transitions. [2021-06-06 00:17:15,788 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 00:17:15,788 INFO L276 IsEmpty]: Start isEmpty. Operand 23101 states and 88883 transitions. [2021-06-06 00:17:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:15,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:15,826 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 00:17:16,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4146,207 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:16,026 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1143968700, now seen corresponding path program 130 times [2021-06-06 00:17:16,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:16,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766176066] [2021-06-06 00:17:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:16,065 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 00:17:16,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:16,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766176066] [2021-06-06 00:17:16,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766176066] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:16,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845687955] [2021-06-06 00:17:16,065 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 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 00:17:16,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:17:16,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:16,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:16,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:16,145 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 00:17:16,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845687955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:16,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:16,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:17:16,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621808785] [2021-06-06 00:17:16,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:17:16,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:16,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:17:16,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:17:16,146 INFO L87 Difference]: Start difference. First operand 23101 states and 88883 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 00:17:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:16,850 INFO L93 Difference]: Finished difference Result 30944 states and 114247 transitions. [2021-06-06 00:17:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:17:16,850 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 00:17:16,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:16,919 INFO L225 Difference]: With dead ends: 30944 [2021-06-06 00:17:16,919 INFO L226 Difference]: Without dead ends: 30944 [2021-06-06 00:17:16,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 372.3ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-06 00:17:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30944 states. [2021-06-06 00:17:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30944 to 24307. [2021-06-06 00:17:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24307 states, 24306 states have (on average 3.8156010861515677) internal successors, (92742), 24306 states have internal predecessors, (92742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:17,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24307 states to 24307 states and 92742 transitions. [2021-06-06 00:17:17,465 INFO L78 Accepts]: Start accepts. Automaton has 24307 states and 92742 transitions. Word has length 28 [2021-06-06 00:17:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:17,465 INFO L482 AbstractCegarLoop]: Abstraction has 24307 states and 92742 transitions. [2021-06-06 00:17:17,465 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 00:17:17,465 INFO L276 IsEmpty]: Start isEmpty. Operand 24307 states and 92742 transitions. [2021-06-06 00:17:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:17,501 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:17,501 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 00:17:17,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4147,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:17,716 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:17,716 INFO L82 PathProgramCache]: Analyzing trace with hash -403875748, now seen corresponding path program 131 times [2021-06-06 00:17:17,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:17,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101493910] [2021-06-06 00:17:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:17,745 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 00:17:17,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:17,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101493910] [2021-06-06 00:17:17,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101493910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:17,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634683649] [2021-06-06 00:17:17,746 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 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 00:17:17,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-06 00:17:17,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:17,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:17,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:17,818 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 00:17:17,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634683649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:17,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:17,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:17:17,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883389199] [2021-06-06 00:17:17,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:17:17,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:17,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:17:17,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:17:17,819 INFO L87 Difference]: Start difference. First operand 24307 states and 92742 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 00:17:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:18,428 INFO L93 Difference]: Finished difference Result 30042 states and 111856 transitions. [2021-06-06 00:17:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:17:18,429 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 00:17:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:18,505 INFO L225 Difference]: With dead ends: 30042 [2021-06-06 00:17:18,505 INFO L226 Difference]: Without dead ends: 30034 [2021-06-06 00:17:18,506 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 321.1ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-06 00:17:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30034 states. [2021-06-06 00:17:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30034 to 24129. [2021-06-06 00:17:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24129 states, 24128 states have (on average 3.821742374005305) internal successors, (92211), 24128 states have internal predecessors, (92211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24129 states to 24129 states and 92211 transitions. [2021-06-06 00:17:19,037 INFO L78 Accepts]: Start accepts. Automaton has 24129 states and 92211 transitions. Word has length 28 [2021-06-06 00:17:19,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:19,037 INFO L482 AbstractCegarLoop]: Abstraction has 24129 states and 92211 transitions. [2021-06-06 00:17:19,037 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 00:17:19,037 INFO L276 IsEmpty]: Start isEmpty. Operand 24129 states and 92211 transitions. [2021-06-06 00:17:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:19,073 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:19,073 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 00:17:19,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4148,209 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:19,289 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1046121180, now seen corresponding path program 132 times [2021-06-06 00:17:19,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:19,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603202940] [2021-06-06 00:17:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:19,318 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 00:17:19,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:19,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603202940] [2021-06-06 00:17:19,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603202940] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:19,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300981547] [2021-06-06 00:17:19,318 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 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 00:17:19,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:17:19,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:19,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:19,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:19,418 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 00:17:19,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300981547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:19,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:19,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:17:19,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139066866] [2021-06-06 00:17:19,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:17:19,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:19,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:17:19,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:17:19,419 INFO L87 Difference]: Start difference. First operand 24129 states and 92211 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 00:17:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:20,143 INFO L93 Difference]: Finished difference Result 31875 states and 117476 transitions. [2021-06-06 00:17:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:17:20,143 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 00:17:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:20,221 INFO L225 Difference]: With dead ends: 31875 [2021-06-06 00:17:20,222 INFO L226 Difference]: Without dead ends: 31875 [2021-06-06 00:17:20,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 395.9ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-06 00:17:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31875 states. [2021-06-06 00:17:20,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31875 to 25163. [2021-06-06 00:17:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25163 states, 25162 states have (on average 3.797631348859391) internal successors, (95556), 25162 states have internal predecessors, (95556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25163 states to 25163 states and 95556 transitions. [2021-06-06 00:17:20,822 INFO L78 Accepts]: Start accepts. Automaton has 25163 states and 95556 transitions. Word has length 28 [2021-06-06 00:17:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:20,822 INFO L482 AbstractCegarLoop]: Abstraction has 25163 states and 95556 transitions. [2021-06-06 00:17:20,822 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 00:17:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 25163 states and 95556 transitions. [2021-06-06 00:17:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:20,858 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:20,858 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 00:17:21,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4149,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:21,059 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:21,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:21,059 INFO L82 PathProgramCache]: Analyzing trace with hash -36901476, now seen corresponding path program 133 times [2021-06-06 00:17:21,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:21,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225924129] [2021-06-06 00:17:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:21,099 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 00:17:21,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:21,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225924129] [2021-06-06 00:17:21,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225924129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:21,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737546471] [2021-06-06 00:17:21,099 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 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 00:17:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:21,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:17:21,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:21,166 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 00:17:21,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737546471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:21,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:21,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:17:21,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597549628] [2021-06-06 00:17:21,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:17:21,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:21,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:17:21,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:17:21,166 INFO L87 Difference]: Start difference. First operand 25163 states and 95556 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 00:17:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:21,491 INFO L93 Difference]: Finished difference Result 30826 states and 116166 transitions. [2021-06-06 00:17:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:17:21,491 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 00:17:21,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:21,567 INFO L225 Difference]: With dead ends: 30826 [2021-06-06 00:17:21,567 INFO L226 Difference]: Without dead ends: 30813 [2021-06-06 00:17:21,567 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:17:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30813 states. [2021-06-06 00:17:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30813 to 29259. [2021-06-06 00:17:22,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29259 states, 29258 states have (on average 3.81594777496753) internal successors, (111647), 29258 states have internal predecessors, (111647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29259 states to 29259 states and 111647 transitions. [2021-06-06 00:17:22,253 INFO L78 Accepts]: Start accepts. Automaton has 29259 states and 111647 transitions. Word has length 28 [2021-06-06 00:17:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:22,253 INFO L482 AbstractCegarLoop]: Abstraction has 29259 states and 111647 transitions. [2021-06-06 00:17:22,253 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 00:17:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 29259 states and 111647 transitions. [2021-06-06 00:17:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:22,299 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:22,299 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 00:17:22,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4150,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:22,500 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:22,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1434176642, now seen corresponding path program 134 times [2021-06-06 00:17:22,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:22,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668286003] [2021-06-06 00:17:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:22,530 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 00:17:22,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:22,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668286003] [2021-06-06 00:17:22,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668286003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:22,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851795915] [2021-06-06 00:17:22,530 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 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 00:17:22,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:17:22,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:22,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:17:22,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:22,599 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 00:17:22,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851795915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:22,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:22,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:17:22,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795484706] [2021-06-06 00:17:22,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:17:22,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:22,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:17:22,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:17:22,599 INFO L87 Difference]: Start difference. First operand 29259 states and 111647 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 00:17:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:22,948 INFO L93 Difference]: Finished difference Result 32262 states and 120978 transitions. [2021-06-06 00:17:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:17:22,948 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 00:17:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:23,020 INFO L225 Difference]: With dead ends: 32262 [2021-06-06 00:17:23,020 INFO L226 Difference]: Without dead ends: 32262 [2021-06-06 00:17:23,021 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:17:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32262 states. [2021-06-06 00:17:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32262 to 29004. [2021-06-06 00:17:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29004 states, 29003 states have (on average 3.8122952797986414) internal successors, (110568), 29003 states have internal predecessors, (110568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29004 states to 29004 states and 110568 transitions. [2021-06-06 00:17:23,615 INFO L78 Accepts]: Start accepts. Automaton has 29004 states and 110568 transitions. Word has length 28 [2021-06-06 00:17:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:23,616 INFO L482 AbstractCegarLoop]: Abstraction has 29004 states and 110568 transitions. [2021-06-06 00:17:23,616 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 00:17:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 29004 states and 110568 transitions. [2021-06-06 00:17:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:23,668 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:23,668 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 00:17:23,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4151 [2021-06-06 00:17:23,869 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:23,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1001300038, now seen corresponding path program 135 times [2021-06-06 00:17:23,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:23,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137028343] [2021-06-06 00:17:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:23,897 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 00:17:23,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:23,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137028343] [2021-06-06 00:17:23,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137028343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:23,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982137697] [2021-06-06 00:17:23,898 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 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 00:17:23,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:17:23,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:23,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:23,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:23,973 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 00:17:23,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982137697] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:23,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:23,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:17:23,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903437274] [2021-06-06 00:17:23,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:17:23,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:17:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:17:23,974 INFO L87 Difference]: Start difference. First operand 29004 states and 110568 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 00:17:24,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:24,543 INFO L93 Difference]: Finished difference Result 35430 states and 131896 transitions. [2021-06-06 00:17:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-06 00:17:24,543 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 00:17:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:24,637 INFO L225 Difference]: With dead ends: 35430 [2021-06-06 00:17:24,637 INFO L226 Difference]: Without dead ends: 35422 [2021-06-06 00:17:24,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 256.0ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:17:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35422 states. [2021-06-06 00:17:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35422 to 28970. [2021-06-06 00:17:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28970 states, 28969 states have (on average 3.8127308502191997) internal successors, (110451), 28969 states have internal predecessors, (110451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28970 states to 28970 states and 110451 transitions. [2021-06-06 00:17:25,329 INFO L78 Accepts]: Start accepts. Automaton has 28970 states and 110451 transitions. Word has length 28 [2021-06-06 00:17:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:25,329 INFO L482 AbstractCegarLoop]: Abstraction has 28970 states and 110451 transitions. [2021-06-06 00:17:25,329 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 00:17:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28970 states and 110451 transitions. [2021-06-06 00:17:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:25,378 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:25,378 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, 1, 1] [2021-06-06 00:17:25,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4152,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:25,593 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:25,593 INFO L82 PathProgramCache]: Analyzing trace with hash 105479222, now seen corresponding path program 136 times [2021-06-06 00:17:25,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:25,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928703007] [2021-06-06 00:17:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:25,784 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2021-06-06 00:17:25,811 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 00:17:25,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:25,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928703007] [2021-06-06 00:17:25,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928703007] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:25,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900707891] [2021-06-06 00:17:25,811 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 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 00:17:25,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:17:25,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:25,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:17:25,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:25,878 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 00:17:25,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900707891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:25,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:25,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-06 00:17:25,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609002151] [2021-06-06 00:17:25,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:17:25,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:25,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:17:25,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:17:25,879 INFO L87 Difference]: Start difference. First operand 28970 states and 110451 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 00:17:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:26,290 INFO L93 Difference]: Finished difference Result 31816 states and 119913 transitions. [2021-06-06 00:17:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:17:26,290 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 00:17:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:26,366 INFO L225 Difference]: With dead ends: 31816 [2021-06-06 00:17:26,366 INFO L226 Difference]: Without dead ends: 31816 [2021-06-06 00:17:26,367 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 166.5ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-06 00:17:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31816 states. [2021-06-06 00:17:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31816 to 29502. [2021-06-06 00:17:26,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29502 states, 29501 states have (on average 3.8112267380766753) internal successors, (112435), 29501 states have internal predecessors, (112435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29502 states to 29502 states and 112435 transitions. [2021-06-06 00:17:26,965 INFO L78 Accepts]: Start accepts. Automaton has 29502 states and 112435 transitions. Word has length 28 [2021-06-06 00:17:26,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:26,965 INFO L482 AbstractCegarLoop]: Abstraction has 29502 states and 112435 transitions. [2021-06-06 00:17:26,965 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 00:17:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 29502 states and 112435 transitions. [2021-06-06 00:17:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:27,016 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:27,016 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 00:17:27,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4153 [2021-06-06 00:17:27,216 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:27,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1598636696, now seen corresponding path program 137 times [2021-06-06 00:17:27,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:27,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783794128] [2021-06-06 00:17:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:27,247 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 00:17:27,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:27,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783794128] [2021-06-06 00:17:27,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783794128] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:27,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678656897] [2021-06-06 00:17:27,248 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 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 00:17:27,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:17:27,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:27,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:27,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:27,320 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 00:17:27,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678656897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:27,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:27,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-06 00:17:27,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674815287] [2021-06-06 00:17:27,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:17:27,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:27,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:17:27,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:17:27,321 INFO L87 Difference]: Start difference. First operand 29502 states and 112435 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 00:17:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:27,895 INFO L93 Difference]: Finished difference Result 36375 states and 135365 transitions. [2021-06-06 00:17:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:17:27,895 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 00:17:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:28,117 INFO L225 Difference]: With dead ends: 36375 [2021-06-06 00:17:28,118 INFO L226 Difference]: Without dead ends: 36351 [2021-06-06 00:17:28,118 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-06 00:17:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36351 states. [2021-06-06 00:17:28,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36351 to 29684. [2021-06-06 00:17:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29684 states, 29683 states have (on average 3.806960212916484) internal successors, (113002), 29683 states have internal predecessors, (113002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29684 states to 29684 states and 113002 transitions. [2021-06-06 00:17:28,911 INFO L78 Accepts]: Start accepts. Automaton has 29684 states and 113002 transitions. Word has length 28 [2021-06-06 00:17:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:28,911 INFO L482 AbstractCegarLoop]: Abstraction has 29684 states and 113002 transitions. [2021-06-06 00:17:28,911 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 00:17:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29684 states and 113002 transitions. [2021-06-06 00:17:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:28,962 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:28,962 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 00:17:29,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4154,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:29,163 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:29,163 INFO L82 PathProgramCache]: Analyzing trace with hash -252372998, now seen corresponding path program 138 times [2021-06-06 00:17:29,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:29,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453630345] [2021-06-06 00:17:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:29,198 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 00:17:29,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:29,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453630345] [2021-06-06 00:17:29,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453630345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:29,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754454730] [2021-06-06 00:17:29,199 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 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 00:17:29,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:17:29,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:29,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:17:29,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:29,268 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 00:17:29,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754454730] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:29,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:29,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-06 00:17:29,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20330626] [2021-06-06 00:17:29,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:17:29,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:29,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:17:29,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:17:29,269 INFO L87 Difference]: Start difference. First operand 29684 states and 113002 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 00:17:29,420 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-06 00:17:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:29,905 INFO L93 Difference]: Finished difference Result 32240 states and 121414 transitions. [2021-06-06 00:17:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:17:29,905 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 00:17:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:29,983 INFO L225 Difference]: With dead ends: 32240 [2021-06-06 00:17:29,984 INFO L226 Difference]: Without dead ends: 32240 [2021-06-06 00:17:29,984 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 301.2ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-06 00:17:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32240 states. [2021-06-06 00:17:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 29610. [2021-06-06 00:17:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29610 states, 29609 states have (on average 3.8078287007328853) internal successors, (112746), 29609 states have internal predecessors, (112746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29610 states to 29610 states and 112746 transitions. [2021-06-06 00:17:30,618 INFO L78 Accepts]: Start accepts. Automaton has 29610 states and 112746 transitions. Word has length 28 [2021-06-06 00:17:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:30,618 INFO L482 AbstractCegarLoop]: Abstraction has 29610 states and 112746 transitions. [2021-06-06 00:17:30,619 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 00:17:30,619 INFO L276 IsEmpty]: Start isEmpty. Operand 29610 states and 112746 transitions. [2021-06-06 00:17:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:30,667 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:30,667 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 00:17:30,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4155 [2021-06-06 00:17:30,868 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:30,868 INFO L82 PathProgramCache]: Analyzing trace with hash 606143132, now seen corresponding path program 139 times [2021-06-06 00:17:30,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:30,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597566967] [2021-06-06 00:17:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:30,902 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 00:17:30,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:30,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597566967] [2021-06-06 00:17:30,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597566967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:30,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296207834] [2021-06-06 00:17:30,903 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 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 00:17:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:30,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:30,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:30,975 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 00:17:30,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296207834] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:30,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:30,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-06 00:17:30,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839607320] [2021-06-06 00:17:30,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:17:30,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:17:30,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:17:30,976 INFO L87 Difference]: Start difference. First operand 29610 states and 112746 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 00:17:31,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:31,763 INFO L93 Difference]: Finished difference Result 36298 states and 135106 transitions. [2021-06-06 00:17:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-06 00:17:31,763 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 00:17:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:31,857 INFO L225 Difference]: With dead ends: 36298 [2021-06-06 00:17:31,858 INFO L226 Difference]: Without dead ends: 36258 [2021-06-06 00:17:31,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 380.3ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-06 00:17:31,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36258 states. [2021-06-06 00:17:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36258 to 29776. [2021-06-06 00:17:32,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29776 states, 29775 states have (on average 3.803761544920235) internal successors, (113257), 29775 states have internal predecessors, (113257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29776 states to 29776 states and 113257 transitions. [2021-06-06 00:17:32,681 INFO L78 Accepts]: Start accepts. Automaton has 29776 states and 113257 transitions. Word has length 28 [2021-06-06 00:17:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:32,681 INFO L482 AbstractCegarLoop]: Abstraction has 29776 states and 113257 transitions. [2021-06-06 00:17:32,681 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 00:17:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 29776 states and 113257 transitions. [2021-06-06 00:17:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:32,731 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:32,731 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 00:17:32,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4156 [2021-06-06 00:17:32,931 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:32,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:32,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1649950116, now seen corresponding path program 140 times [2021-06-06 00:17:32,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:32,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596815252] [2021-06-06 00:17:32,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:32,960 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 00:17:32,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:32,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596815252] [2021-06-06 00:17:32,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596815252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:32,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890213264] [2021-06-06 00:17:32,961 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 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 00:17:32,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:17:32,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:32,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:32,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:33,074 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 00:17:33,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890213264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:33,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:33,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:17:33,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977711367] [2021-06-06 00:17:33,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:17:33,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:33,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:17:33,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:17:33,075 INFO L87 Difference]: Start difference. First operand 29776 states and 113257 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 00:17:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:34,435 INFO L93 Difference]: Finished difference Result 68142 states and 250877 transitions. [2021-06-06 00:17:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:17:34,435 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 00:17:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:34,622 INFO L225 Difference]: With dead ends: 68142 [2021-06-06 00:17:34,622 INFO L226 Difference]: Without dead ends: 68142 [2021-06-06 00:17:34,622 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 595.8ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:17:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68142 states. [2021-06-06 00:17:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68142 to 37503. [2021-06-06 00:17:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37503 states, 37502 states have (on average 3.8855527705189057) internal successors, (145716), 37502 states have internal predecessors, (145716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37503 states to 37503 states and 145716 transitions. [2021-06-06 00:17:36,078 INFO L78 Accepts]: Start accepts. Automaton has 37503 states and 145716 transitions. Word has length 28 [2021-06-06 00:17:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:36,078 INFO L482 AbstractCegarLoop]: Abstraction has 37503 states and 145716 transitions. [2021-06-06 00:17:36,078 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 00:17:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 37503 states and 145716 transitions. [2021-06-06 00:17:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:36,132 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:36,132 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 00:17:36,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4157,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:36,332 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:36,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1082998036, now seen corresponding path program 141 times [2021-06-06 00:17:36,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:36,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720092763] [2021-06-06 00:17:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:36,361 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 00:17:36,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:36,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720092763] [2021-06-06 00:17:36,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720092763] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:36,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498734815] [2021-06-06 00:17:36,362 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 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 00:17:36,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:17:36,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:36,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:36,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:36,474 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 00:17:36,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498734815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:36,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:36,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:17:36,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360469520] [2021-06-06 00:17:36,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:17:36,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:36,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:17:36,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:17:36,475 INFO L87 Difference]: Start difference. First operand 37503 states and 145716 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 00:17:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:37,868 INFO L93 Difference]: Finished difference Result 67515 states and 249216 transitions. [2021-06-06 00:17:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:17:37,868 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 00:17:37,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:38,051 INFO L225 Difference]: With dead ends: 67515 [2021-06-06 00:17:38,051 INFO L226 Difference]: Without dead ends: 67515 [2021-06-06 00:17:38,051 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 641.2ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:17:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67515 states. [2021-06-06 00:17:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67515 to 37500. [2021-06-06 00:17:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37500 states, 37499 states have (on average 3.885490279740793) internal successors, (145702), 37499 states have internal predecessors, (145702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37500 states to 37500 states and 145702 transitions. [2021-06-06 00:17:39,480 INFO L78 Accepts]: Start accepts. Automaton has 37500 states and 145702 transitions. Word has length 28 [2021-06-06 00:17:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:39,480 INFO L482 AbstractCegarLoop]: Abstraction has 37500 states and 145702 transitions. [2021-06-06 00:17:39,480 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 00:17:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 37500 states and 145702 transitions. [2021-06-06 00:17:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:39,701 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:39,701 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 00:17:39,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4158 [2021-06-06 00:17:39,929 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2039623402, now seen corresponding path program 142 times [2021-06-06 00:17:39,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:39,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218241048] [2021-06-06 00:17:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:39,957 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 00:17:39,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:39,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218241048] [2021-06-06 00:17:39,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218241048] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:39,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207423492] [2021-06-06 00:17:39,958 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 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 00:17:39,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:17:39,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:39,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:39,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:40,063 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 00:17:40,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207423492] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:40,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:40,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:17:40,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461172984] [2021-06-06 00:17:40,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:17:40,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:40,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:17:40,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:17:40,064 INFO L87 Difference]: Start difference. First operand 37500 states and 145702 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 00:17:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:41,270 INFO L93 Difference]: Finished difference Result 62937 states and 233716 transitions. [2021-06-06 00:17:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-06 00:17:41,270 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 00:17:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:41,439 INFO L225 Difference]: With dead ends: 62937 [2021-06-06 00:17:41,439 INFO L226 Difference]: Without dead ends: 62937 [2021-06-06 00:17:41,439 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 532.7ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-06 00:17:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62937 states. [2021-06-06 00:17:42,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62937 to 37524. [2021-06-06 00:17:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 3.885830024251792) internal successors, (145808), 37523 states have internal predecessors, (145808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 145808 transitions. [2021-06-06 00:17:42,835 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 145808 transitions. Word has length 28 [2021-06-06 00:17:42,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:42,835 INFO L482 AbstractCegarLoop]: Abstraction has 37524 states and 145808 transitions. [2021-06-06 00:17:42,835 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 00:17:42,835 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 145808 transitions. [2021-06-06 00:17:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:42,893 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:42,893 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 00:17:43,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4159,220 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:43,093 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2120999490, now seen corresponding path program 143 times [2021-06-06 00:17:43,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:43,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075466305] [2021-06-06 00:17:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:43,122 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 00:17:43,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:43,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075466305] [2021-06-06 00:17:43,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075466305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:43,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414448511] [2021-06-06 00:17:43,122 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 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 00:17:43,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:17:43,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:43,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:43,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:43,223 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 00:17:43,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414448511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:43,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:43,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:17:43,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771466653] [2021-06-06 00:17:43,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:17:43,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:43,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:17:43,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:17:43,224 INFO L87 Difference]: Start difference. First operand 37524 states and 145808 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 00:17:44,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:44,362 INFO L93 Difference]: Finished difference Result 62070 states and 231476 transitions. [2021-06-06 00:17:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:17:44,363 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 00:17:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:44,522 INFO L225 Difference]: With dead ends: 62070 [2021-06-06 00:17:44,522 INFO L226 Difference]: Without dead ends: 62062 [2021-06-06 00:17:44,522 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 447.3ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:17:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62062 states. [2021-06-06 00:17:45,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62062 to 37524. [2021-06-06 00:17:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 3.885670122324974) internal successors, (145802), 37523 states have internal predecessors, (145802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 145802 transitions. [2021-06-06 00:17:45,853 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 145802 transitions. Word has length 28 [2021-06-06 00:17:45,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:45,853 INFO L482 AbstractCegarLoop]: Abstraction has 37524 states and 145802 transitions. [2021-06-06 00:17:45,853 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 00:17:45,853 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 145802 transitions. [2021-06-06 00:17:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:45,918 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:45,918 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 00:17:46,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4160,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:46,119 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:46,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1243310590, now seen corresponding path program 144 times [2021-06-06 00:17:46,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:46,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099250880] [2021-06-06 00:17:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:46,151 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 00:17:46,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:46,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099250880] [2021-06-06 00:17:46,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099250880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:46,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882668303] [2021-06-06 00:17:46,151 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 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 00:17:46,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:17:46,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:46,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:46,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:46,272 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 00:17:46,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882668303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:46,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:46,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:17:46,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409652858] [2021-06-06 00:17:46,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:17:46,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:46,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:17:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:17:46,273 INFO L87 Difference]: Start difference. First operand 37524 states and 145802 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 00:17:47,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:47,609 INFO L93 Difference]: Finished difference Result 61748 states and 230607 transitions. [2021-06-06 00:17:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:17:47,609 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 00:17:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:47,770 INFO L225 Difference]: With dead ends: 61748 [2021-06-06 00:17:47,770 INFO L226 Difference]: Without dead ends: 61748 [2021-06-06 00:17:47,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 554.1ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-06 00:17:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61748 states. [2021-06-06 00:17:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61748 to 37532. [2021-06-06 00:17:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37532 states, 37531 states have (on average 3.8857477818336843) internal successors, (145836), 37531 states have internal predecessors, (145836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37532 states to 37532 states and 145836 transitions. [2021-06-06 00:17:48,963 INFO L78 Accepts]: Start accepts. Automaton has 37532 states and 145836 transitions. Word has length 28 [2021-06-06 00:17:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:48,964 INFO L482 AbstractCegarLoop]: Abstraction has 37532 states and 145836 transitions. [2021-06-06 00:17:48,964 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 00:17:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 37532 states and 145836 transitions. [2021-06-06 00:17:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:49,021 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:49,021 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 00:17:49,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4161 [2021-06-06 00:17:49,222 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:49,222 INFO L82 PathProgramCache]: Analyzing trace with hash 399728564, now seen corresponding path program 145 times [2021-06-06 00:17:49,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:49,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907613139] [2021-06-06 00:17:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:49,250 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 00:17:49,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:49,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907613139] [2021-06-06 00:17:49,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907613139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:49,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273029306] [2021-06-06 00:17:49,251 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 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 00:17:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:49,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:49,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:49,357 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 00:17:49,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273029306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:49,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:49,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:17:49,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343677826] [2021-06-06 00:17:49,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:17:49,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:49,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:17:49,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:17:49,358 INFO L87 Difference]: Start difference. First operand 37532 states and 145836 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 00:17:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:50,557 INFO L93 Difference]: Finished difference Result 61537 states and 230081 transitions. [2021-06-06 00:17:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:17:50,557 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 00:17:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:50,730 INFO L225 Difference]: With dead ends: 61537 [2021-06-06 00:17:50,730 INFO L226 Difference]: Without dead ends: 61529 [2021-06-06 00:17:50,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 485.1ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:17:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61529 states. [2021-06-06 00:17:52,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61529 to 37532. [2021-06-06 00:17:52,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37532 states, 37531 states have (on average 3.885694492552823) internal successors, (145834), 37531 states have internal predecessors, (145834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37532 states to 37532 states and 145834 transitions. [2021-06-06 00:17:52,213 INFO L78 Accepts]: Start accepts. Automaton has 37532 states and 145834 transitions. Word has length 28 [2021-06-06 00:17:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:52,213 INFO L482 AbstractCegarLoop]: Abstraction has 37532 states and 145834 transitions. [2021-06-06 00:17:52,213 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 00:17:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 37532 states and 145834 transitions. [2021-06-06 00:17:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:52,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:52,272 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 00:17:52,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4162,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:17:52,472 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1403156548, now seen corresponding path program 146 times [2021-06-06 00:17:52,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:52,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911057061] [2021-06-06 00:17:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:52,505 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 00:17:52,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:52,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911057061] [2021-06-06 00:17:52,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911057061] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:52,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73049707] [2021-06-06 00:17:52,505 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 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 00:17:52,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:17:52,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:52,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:52,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:52,601 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 00:17:52,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73049707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:52,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:52,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:17:52,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046930157] [2021-06-06 00:17:52,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:17:52,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:52,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:17:52,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:17:52,602 INFO L87 Difference]: Start difference. First operand 37532 states and 145834 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 00:17:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:53,868 INFO L93 Difference]: Finished difference Result 60940 states and 226561 transitions. [2021-06-06 00:17:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-06 00:17:53,869 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 00:17:53,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:54,019 INFO L225 Difference]: With dead ends: 60940 [2021-06-06 00:17:54,019 INFO L226 Difference]: Without dead ends: 60940 [2021-06-06 00:17:54,019 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 554.8ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-06 00:17:54,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60940 states. [2021-06-06 00:17:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60940 to 40347. [2021-06-06 00:17:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40347 states, 40346 states have (on average 3.8897040598820207) internal successors, (156934), 40346 states have internal predecessors, (156934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40347 states to 40347 states and 156934 transitions. [2021-06-06 00:17:55,284 INFO L78 Accepts]: Start accepts. Automaton has 40347 states and 156934 transitions. Word has length 28 [2021-06-06 00:17:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:55,284 INFO L482 AbstractCegarLoop]: Abstraction has 40347 states and 156934 transitions. [2021-06-06 00:17:55,284 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 00:17:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 40347 states and 156934 transitions. [2021-06-06 00:17:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:55,356 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:55,356 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 00:17:55,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4163 [2021-06-06 00:17:55,557 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:55,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1484532636, now seen corresponding path program 147 times [2021-06-06 00:17:55,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:55,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807807042] [2021-06-06 00:17:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:55,587 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 00:17:55,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:55,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807807042] [2021-06-06 00:17:55,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807807042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:55,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244575638] [2021-06-06 00:17:55,587 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 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 00:17:55,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-06 00:17:55,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:55,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:55,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:55,679 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 00:17:55,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244575638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:55,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:55,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:17:55,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465856667] [2021-06-06 00:17:55,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:17:55,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:55,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:17:55,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:17:55,680 INFO L87 Difference]: Start difference. First operand 40347 states and 156934 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 00:17:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:56,923 INFO L93 Difference]: Finished difference Result 60463 states and 225303 transitions. [2021-06-06 00:17:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-06 00:17:56,933 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 00:17:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:57,119 INFO L225 Difference]: With dead ends: 60463 [2021-06-06 00:17:57,119 INFO L226 Difference]: Without dead ends: 60455 [2021-06-06 00:17:57,119 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 643.5ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:17:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60455 states. [2021-06-06 00:17:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60455 to 40063. [2021-06-06 00:17:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40062 states have (on average 3.8951125755079627) internal successors, (156046), 40062 states have internal predecessors, (156046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:17:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 156046 transitions. [2021-06-06 00:17:58,613 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 156046 transitions. Word has length 28 [2021-06-06 00:17:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:17:58,613 INFO L482 AbstractCegarLoop]: Abstraction has 40063 states and 156046 transitions. [2021-06-06 00:17:58,613 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 00:17:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 156046 transitions. [2021-06-06 00:17:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:17:58,672 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:17:58,673 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 00:17:58,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4164 [2021-06-06 00:17:58,873 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:17:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:17:58,873 INFO L82 PathProgramCache]: Analyzing trace with hash -30559336, now seen corresponding path program 148 times [2021-06-06 00:17:58,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:17:58,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044691873] [2021-06-06 00:17:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:17:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:17:58,903 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 00:17:58,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:17:58,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044691873] [2021-06-06 00:17:58,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044691873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:58,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430199167] [2021-06-06 00:17:58,903 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 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 00:17:58,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:17:58,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:17:58,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:17:58,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:17:58,992 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 00:17:58,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430199167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:17:58,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:17:58,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-06 00:17:58,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780555705] [2021-06-06 00:17:58,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:17:58,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:17:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:17:58,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:17:58,993 INFO L87 Difference]: Start difference. First operand 40063 states and 156046 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 00:17:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:17:59,742 INFO L93 Difference]: Finished difference Result 59012 states and 221313 transitions. [2021-06-06 00:17:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-06 00:17:59,742 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 00:17:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:17:59,895 INFO L225 Difference]: With dead ends: 59012 [2021-06-06 00:17:59,895 INFO L226 Difference]: Without dead ends: 58988 [2021-06-06 00:17:59,896 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 325.9ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-06 00:18:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58988 states. [2021-06-06 00:18:01,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58988 to 39973. [2021-06-06 00:18:01,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39973 states, 39972 states have (on average 3.8949514660262183) internal successors, (155689), 39972 states have internal predecessors, (155689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39973 states to 39973 states and 155689 transitions. [2021-06-06 00:18:01,292 INFO L78 Accepts]: Start accepts. Automaton has 39973 states and 155689 transitions. Word has length 28 [2021-06-06 00:18:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:01,292 INFO L482 AbstractCegarLoop]: Abstraction has 39973 states and 155689 transitions. [2021-06-06 00:18:01,292 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 00:18:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 39973 states and 155689 transitions. [2021-06-06 00:18:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:01,357 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:01,357 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 00:18:01,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4165 [2021-06-06 00:18:01,558 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:01,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:01,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1566567380, now seen corresponding path program 149 times [2021-06-06 00:18:01,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:01,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151930010] [2021-06-06 00:18:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:01,590 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 00:18:01,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:01,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151930010] [2021-06-06 00:18:01,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151930010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:01,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577157300] [2021-06-06 00:18:01,590 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 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 00:18:01,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-06 00:18:01,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:01,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:01,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:01,709 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 00:18:01,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577157300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:01,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:01,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:18:01,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777925382] [2021-06-06 00:18:01,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:01,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:01,710 INFO L87 Difference]: Start difference. First operand 39973 states and 155689 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 00:18:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:03,020 INFO L93 Difference]: Finished difference Result 60251 states and 224712 transitions. [2021-06-06 00:18:03,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-06 00:18:03,020 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 00:18:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:03,185 INFO L225 Difference]: With dead ends: 60251 [2021-06-06 00:18:03,186 INFO L226 Difference]: Without dead ends: 60251 [2021-06-06 00:18:03,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 578.6ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-06 00:18:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60251 states. [2021-06-06 00:18:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60251 to 40069. [2021-06-06 00:18:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40069 states, 40068 states have (on average 3.8934561245882002) internal successors, (156003), 40068 states have internal predecessors, (156003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40069 states to 40069 states and 156003 transitions. [2021-06-06 00:18:04,424 INFO L78 Accepts]: Start accepts. Automaton has 40069 states and 156003 transitions. Word has length 28 [2021-06-06 00:18:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:04,425 INFO L482 AbstractCegarLoop]: Abstraction has 40069 states and 156003 transitions. [2021-06-06 00:18:04,425 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 00:18:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 40069 states and 156003 transitions. [2021-06-06 00:18:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:04,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:04,494 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 00:18:04,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4166 [2021-06-06 00:18:04,695 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:04,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:04,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1085360762, now seen corresponding path program 150 times [2021-06-06 00:18:04,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:04,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904819542] [2021-06-06 00:18:04,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:04,732 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 00:18:04,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:04,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904819542] [2021-06-06 00:18:04,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904819542] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:04,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347030741] [2021-06-06 00:18:04,732 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 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 00:18:04,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:18:04,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:04,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:04,839 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 00:18:04,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347030741] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:04,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:04,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-06 00:18:04,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262092953] [2021-06-06 00:18:04,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:04,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:04,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:04,840 INFO L87 Difference]: Start difference. First operand 40069 states and 156003 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 00:18:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:05,981 INFO L93 Difference]: Finished difference Result 59938 states and 223824 transitions. [2021-06-06 00:18:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-06 00:18:05,981 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 00:18:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:06,147 INFO L225 Difference]: With dead ends: 59938 [2021-06-06 00:18:06,148 INFO L226 Difference]: Without dead ends: 59930 [2021-06-06 00:18:06,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 444.6ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:18:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59930 states. [2021-06-06 00:18:07,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59930 to 40001. [2021-06-06 00:18:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40001 states, 40000 states have (on average 3.894775) internal successors, (155791), 40000 states have internal predecessors, (155791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40001 states to 40001 states and 155791 transitions. [2021-06-06 00:18:07,490 INFO L78 Accepts]: Start accepts. Automaton has 40001 states and 155791 transitions. Word has length 28 [2021-06-06 00:18:07,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:07,490 INFO L482 AbstractCegarLoop]: Abstraction has 40001 states and 155791 transitions. [2021-06-06 00:18:07,490 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 00:18:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 40001 states and 155791 transitions. [2021-06-06 00:18:07,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:07,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:07,559 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 00:18:07,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4167 [2021-06-06 00:18:07,759 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1942149356, now seen corresponding path program 151 times [2021-06-06 00:18:07,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:07,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667240166] [2021-06-06 00:18:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:07,791 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 00:18:07,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:07,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667240166] [2021-06-06 00:18:07,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667240166] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:07,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136341578] [2021-06-06 00:18:07,791 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 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 00:18:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:07,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:07,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:07,892 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 00:18:07,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136341578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:07,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:07,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-06 00:18:07,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524917417] [2021-06-06 00:18:07,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:18:07,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:07,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:18:07,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:18:07,893 INFO L87 Difference]: Start difference. First operand 40001 states and 155791 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 00:18:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:08,872 INFO L93 Difference]: Finished difference Result 58669 states and 220313 transitions. [2021-06-06 00:18:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:18:08,872 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 00:18:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:09,024 INFO L225 Difference]: With dead ends: 58669 [2021-06-06 00:18:09,024 INFO L226 Difference]: Without dead ends: 58645 [2021-06-06 00:18:09,024 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 526.9ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-06 00:18:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58645 states. [2021-06-06 00:18:10,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58645 to 39977. [2021-06-06 00:18:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39977 states, 39976 states have (on average 3.894911947168301) internal successors, (155703), 39976 states have internal predecessors, (155703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39977 states to 39977 states and 155703 transitions. [2021-06-06 00:18:10,286 INFO L78 Accepts]: Start accepts. Automaton has 39977 states and 155703 transitions. Word has length 28 [2021-06-06 00:18:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:10,286 INFO L482 AbstractCegarLoop]: Abstraction has 39977 states and 155703 transitions. [2021-06-06 00:18:10,286 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 00:18:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 39977 states and 155703 transitions. [2021-06-06 00:18:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:10,349 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:10,349 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 00:18:10,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4168,229 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:10,549 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:10,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:10,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1119483464, now seen corresponding path program 152 times [2021-06-06 00:18:10,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:10,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027938745] [2021-06-06 00:18:10,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:10,584 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 00:18:10,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:10,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027938745] [2021-06-06 00:18:10,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027938745] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:10,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142170466] [2021-06-06 00:18:10,584 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 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 00:18:10,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:18:10,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:10,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:10,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:10,672 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 00:18:10,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142170466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:10,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:10,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:18:10,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899193278] [2021-06-06 00:18:10,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:18:10,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:10,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:18:10,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:18:10,673 INFO L87 Difference]: Start difference. First operand 39977 states and 155703 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 00:18:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:12,282 INFO L93 Difference]: Finished difference Result 61863 states and 229407 transitions. [2021-06-06 00:18:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-06 00:18:12,282 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 00:18:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:12,450 INFO L225 Difference]: With dead ends: 61863 [2021-06-06 00:18:12,450 INFO L226 Difference]: Without dead ends: 61863 [2021-06-06 00:18:12,451 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 968.5ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-06 00:18:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61863 states. [2021-06-06 00:18:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61863 to 44335. [2021-06-06 00:18:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44335 states, 44334 states have (on average 3.8447692515902014) internal successors, (170454), 44334 states have internal predecessors, (170454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44335 states to 44335 states and 170454 transitions. [2021-06-06 00:18:13,934 INFO L78 Accepts]: Start accepts. Automaton has 44335 states and 170454 transitions. Word has length 28 [2021-06-06 00:18:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:13,934 INFO L482 AbstractCegarLoop]: Abstraction has 44335 states and 170454 transitions. [2021-06-06 00:18:13,934 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 00:18:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 44335 states and 170454 transitions. [2021-06-06 00:18:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:13,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:13,998 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 00:18:14,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4169,230 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:14,201 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:14,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:14,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1200859552, now seen corresponding path program 153 times [2021-06-06 00:18:14,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:14,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905242180] [2021-06-06 00:18:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:14,235 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 00:18:14,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:14,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905242180] [2021-06-06 00:18:14,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905242180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:14,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790037065] [2021-06-06 00:18:14,236 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 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 00:18:14,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:18:14,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:14,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:14,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:14,318 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 00:18:14,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790037065] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:14,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:14,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:18:14,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036302933] [2021-06-06 00:18:14,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:18:14,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:18:14,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:18:14,319 INFO L87 Difference]: Start difference. First operand 44335 states and 170454 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 00:18:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:15,704 INFO L93 Difference]: Finished difference Result 61094 states and 227301 transitions. [2021-06-06 00:18:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-06 00:18:15,717 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 00:18:15,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:15,874 INFO L225 Difference]: With dead ends: 61094 [2021-06-06 00:18:15,874 INFO L226 Difference]: Without dead ends: 61086 [2021-06-06 00:18:15,874 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 605.2ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-06 00:18:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61086 states. [2021-06-06 00:18:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61086 to 43181. [2021-06-06 00:18:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43181 states, 43180 states have (on average 3.8640805928670683) internal successors, (166851), 43180 states have internal predecessors, (166851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43181 states to 43181 states and 166851 transitions. [2021-06-06 00:18:17,183 INFO L78 Accepts]: Start accepts. Automaton has 43181 states and 166851 transitions. Word has length 28 [2021-06-06 00:18:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:17,183 INFO L482 AbstractCegarLoop]: Abstraction has 43181 states and 166851 transitions. [2021-06-06 00:18:17,183 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 00:18:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 43181 states and 166851 transitions. [2021-06-06 00:18:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:17,254 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:17,254 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 00:18:17,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4170 [2021-06-06 00:18:17,455 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:17,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:17,455 INFO L82 PathProgramCache]: Analyzing trace with hash -314232420, now seen corresponding path program 154 times [2021-06-06 00:18:17,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:17,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246198211] [2021-06-06 00:18:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:17,489 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 00:18:17,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:17,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246198211] [2021-06-06 00:18:17,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246198211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:17,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395497985] [2021-06-06 00:18:17,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:18:17,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:18:17,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:17,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:17,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:17,571 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 00:18:17,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395497985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:17,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:17,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:18:17,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591272105] [2021-06-06 00:18:17,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:18:17,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:17,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:18:17,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:18:17,572 INFO L87 Difference]: Start difference. First operand 43181 states and 166851 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 00:18:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:18,797 INFO L93 Difference]: Finished difference Result 59433 states and 222664 transitions. [2021-06-06 00:18:18,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:18:18,798 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 00:18:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:18,950 INFO L225 Difference]: With dead ends: 59433 [2021-06-06 00:18:18,950 INFO L226 Difference]: Without dead ends: 59409 [2021-06-06 00:18:18,950 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 531.0ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:18:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59409 states. [2021-06-06 00:18:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59409 to 43201. [2021-06-06 00:18:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43201 states, 43200 states have (on average 3.861782407407407) internal successors, (166829), 43200 states have internal predecessors, (166829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43201 states to 43201 states and 166829 transitions. [2021-06-06 00:18:20,371 INFO L78 Accepts]: Start accepts. Automaton has 43201 states and 166829 transitions. Word has length 28 [2021-06-06 00:18:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:20,371 INFO L482 AbstractCegarLoop]: Abstraction has 43201 states and 166829 transitions. [2021-06-06 00:18:20,371 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 00:18:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 43201 states and 166829 transitions. [2021-06-06 00:18:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:20,446 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:20,447 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 00:18:20,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4171,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:20,647 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:20,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1316197732, now seen corresponding path program 155 times [2021-06-06 00:18:20,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:20,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762426754] [2021-06-06 00:18:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:20,683 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 00:18:20,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:20,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762426754] [2021-06-06 00:18:20,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762426754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:20,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263068457] [2021-06-06 00:18:20,683 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 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 00:18:20,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:18:20,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:20,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:20,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:20,766 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 00:18:20,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263068457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:20,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:20,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-06 00:18:20,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619020679] [2021-06-06 00:18:20,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:18:20,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:20,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:18:20,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:18:20,767 INFO L87 Difference]: Start difference. First operand 43201 states and 166829 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 00:18:21,622 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-06-06 00:18:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:21,948 INFO L93 Difference]: Finished difference Result 60686 states and 226187 transitions. [2021-06-06 00:18:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:18:21,948 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 00:18:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:22,113 INFO L225 Difference]: With dead ends: 60686 [2021-06-06 00:18:22,113 INFO L226 Difference]: Without dead ends: 60646 [2021-06-06 00:18:22,113 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:18:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60646 states. [2021-06-06 00:18:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60646 to 43335. [2021-06-06 00:18:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43335 states, 43334 states have (on average 3.8610790603221488) internal successors, (167316), 43334 states have internal predecessors, (167316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43335 states to 43335 states and 167316 transitions. [2021-06-06 00:18:23,413 INFO L78 Accepts]: Start accepts. Automaton has 43335 states and 167316 transitions. Word has length 28 [2021-06-06 00:18:23,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:23,413 INFO L482 AbstractCegarLoop]: Abstraction has 43335 states and 167316 transitions. [2021-06-06 00:18:23,414 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 00:18:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 43335 states and 167316 transitions. [2021-06-06 00:18:23,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:23,479 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:23,479 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 00:18:23,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4172 [2021-06-06 00:18:23,680 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:23,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:23,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1262992088, now seen corresponding path program 156 times [2021-06-06 00:18:23,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:23,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755450122] [2021-06-06 00:18:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:23,718 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 00:18:23,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:23,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755450122] [2021-06-06 00:18:23,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755450122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:23,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893056018] [2021-06-06 00:18:23,718 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 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 00:18:23,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:18:23,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:23,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:23,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:23,836 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 00:18:23,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893056018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:23,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:23,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:18:23,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802721066] [2021-06-06 00:18:23,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:18:23,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:23,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:18:23,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:18:23,837 INFO L87 Difference]: Start difference. First operand 43335 states and 167316 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 00:18:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:25,423 INFO L93 Difference]: Finished difference Result 59923 states and 223885 transitions. [2021-06-06 00:18:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-06 00:18:25,423 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 00:18:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:25,574 INFO L225 Difference]: With dead ends: 59923 [2021-06-06 00:18:25,575 INFO L226 Difference]: Without dead ends: 59923 [2021-06-06 00:18:25,575 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 990.6ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-06 00:18:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59923 states. [2021-06-06 00:18:26,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59923 to 44240. [2021-06-06 00:18:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44240 states, 44239 states have (on average 3.851511110106467) internal successors, (170387), 44239 states have internal predecessors, (170387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44240 states to 44240 states and 170387 transitions. [2021-06-06 00:18:26,943 INFO L78 Accepts]: Start accepts. Automaton has 44240 states and 170387 transitions. Word has length 28 [2021-06-06 00:18:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:26,943 INFO L482 AbstractCegarLoop]: Abstraction has 44240 states and 170387 transitions. [2021-06-06 00:18:26,943 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 00:18:26,944 INFO L276 IsEmpty]: Start isEmpty. Operand 44240 states and 170387 transitions. [2021-06-06 00:18:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:27,228 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:27,228 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 00:18:27,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4173,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:27,437 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:27,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:27,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1388936054, now seen corresponding path program 157 times [2021-06-06 00:18:27,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:27,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771870226] [2021-06-06 00:18:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:27,472 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 00:18:27,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:27,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771870226] [2021-06-06 00:18:27,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771870226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:27,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104978057] [2021-06-06 00:18:27,473 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 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 00:18:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:27,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:27,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:27,588 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 00:18:27,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104978057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:27,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:27,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:18:27,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182219457] [2021-06-06 00:18:27,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:18:27,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:27,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:18:27,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:18:27,589 INFO L87 Difference]: Start difference. First operand 44240 states and 170387 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 00:18:28,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:28,780 INFO L93 Difference]: Finished difference Result 59425 states and 222490 transitions. [2021-06-06 00:18:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:18:28,780 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 00:18:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:28,945 INFO L225 Difference]: With dead ends: 59425 [2021-06-06 00:18:28,945 INFO L226 Difference]: Without dead ends: 59417 [2021-06-06 00:18:28,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 634.4ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-06 00:18:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59417 states. [2021-06-06 00:18:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59417 to 44164. [2021-06-06 00:18:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44164 states, 44163 states have (on average 3.8527953264044563) internal successors, (170151), 44163 states have internal predecessors, (170151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44164 states to 44164 states and 170151 transitions. [2021-06-06 00:18:30,472 INFO L78 Accepts]: Start accepts. Automaton has 44164 states and 170151 transitions. Word has length 28 [2021-06-06 00:18:30,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:30,473 INFO L482 AbstractCegarLoop]: Abstraction has 44164 states and 170151 transitions. [2021-06-06 00:18:30,473 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 00:18:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 44164 states and 170151 transitions. [2021-06-06 00:18:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:30,546 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:30,546 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 00:18:30,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4174 [2021-06-06 00:18:30,761 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1638574064, now seen corresponding path program 158 times [2021-06-06 00:18:30,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:30,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014854498] [2021-06-06 00:18:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:30,795 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 00:18:30,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:30,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014854498] [2021-06-06 00:18:30,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014854498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:30,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330871823] [2021-06-06 00:18:30,796 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 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 00:18:30,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:18:30,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:30,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:30,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:30,895 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 00:18:30,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330871823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:30,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:30,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:18:30,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179199211] [2021-06-06 00:18:30,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:30,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:30,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:30,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:30,896 INFO L87 Difference]: Start difference. First operand 44164 states and 170151 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 00:18:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:31,926 INFO L93 Difference]: Finished difference Result 58902 states and 221244 transitions. [2021-06-06 00:18:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-06 00:18:31,926 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 00:18:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:32,081 INFO L225 Difference]: With dead ends: 58902 [2021-06-06 00:18:32,081 INFO L226 Difference]: Without dead ends: 58878 [2021-06-06 00:18:32,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 514.8ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-06 00:18:32,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58878 states. [2021-06-06 00:18:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58878 to 44150. [2021-06-06 00:18:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44150 states, 44149 states have (on average 3.8527712971981245) internal successors, (170096), 44149 states have internal predecessors, (170096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44150 states to 44150 states and 170096 transitions. [2021-06-06 00:18:33,602 INFO L78 Accepts]: Start accepts. Automaton has 44150 states and 170096 transitions. Word has length 28 [2021-06-06 00:18:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:33,602 INFO L482 AbstractCegarLoop]: Abstraction has 44150 states and 170096 transitions. [2021-06-06 00:18:33,602 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 00:18:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 44150 states and 170096 transitions. [2021-06-06 00:18:33,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:33,670 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:33,670 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 00:18:33,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4175,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:33,870 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:33,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1972807316, now seen corresponding path program 159 times [2021-06-06 00:18:33,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:33,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037794768] [2021-06-06 00:18:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:33,906 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 00:18:33,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:33,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037794768] [2021-06-06 00:18:33,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037794768] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:33,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430168546] [2021-06-06 00:18:33,906 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 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 00:18:33,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:18:33,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:33,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:33,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:34,004 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 00:18:34,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430168546] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:34,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:34,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-06 00:18:34,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142279964] [2021-06-06 00:18:34,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:18:34,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:34,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:18:34,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:18:34,005 INFO L87 Difference]: Start difference. First operand 44150 states and 170096 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 00:18:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:35,004 INFO L93 Difference]: Finished difference Result 58684 states and 220551 transitions. [2021-06-06 00:18:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-06 00:18:35,005 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 00:18:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:35,165 INFO L225 Difference]: With dead ends: 58684 [2021-06-06 00:18:35,165 INFO L226 Difference]: Without dead ends: 58644 [2021-06-06 00:18:35,166 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 486.5ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:18:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58644 states. [2021-06-06 00:18:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58644 to 44499. [2021-06-06 00:18:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44499 states, 44498 states have (on average 3.854667625511259) internal successors, (171525), 44498 states have internal predecessors, (171525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44499 states to 44499 states and 171525 transitions. [2021-06-06 00:18:36,685 INFO L78 Accepts]: Start accepts. Automaton has 44499 states and 171525 transitions. Word has length 28 [2021-06-06 00:18:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:36,685 INFO L482 AbstractCegarLoop]: Abstraction has 44499 states and 171525 transitions. [2021-06-06 00:18:36,685 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 00:18:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 44499 states and 171525 transitions. [2021-06-06 00:18:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:36,757 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:36,757 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 00:18:36,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4176 [2021-06-06 00:18:36,957 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:36,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1825824890, now seen corresponding path program 160 times [2021-06-06 00:18:36,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:36,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674333799] [2021-06-06 00:18:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:36,992 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 00:18:36,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:36,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674333799] [2021-06-06 00:18:36,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674333799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:36,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234161067] [2021-06-06 00:18:36,993 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 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 00:18:37,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:18:37,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:37,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:37,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:37,104 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 00:18:37,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234161067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:37,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:37,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:18:37,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071194761] [2021-06-06 00:18:37,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:37,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:37,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:37,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:37,105 INFO L87 Difference]: Start difference. First operand 44499 states and 171525 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 00:18:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:38,251 INFO L93 Difference]: Finished difference Result 71216 states and 265043 transitions. [2021-06-06 00:18:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-06 00:18:38,252 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 00:18:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:38,710 INFO L225 Difference]: With dead ends: 71216 [2021-06-06 00:18:38,710 INFO L226 Difference]: Without dead ends: 71216 [2021-06-06 00:18:38,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 557.8ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-06 00:18:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71216 states. [2021-06-06 00:18:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71216 to 45665. [2021-06-06 00:18:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45665 states, 45664 states have (on average 3.8691310441485633) internal successors, (176680), 45664 states have internal predecessors, (176680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45665 states to 45665 states and 176680 transitions. [2021-06-06 00:18:40,044 INFO L78 Accepts]: Start accepts. Automaton has 45665 states and 176680 transitions. Word has length 28 [2021-06-06 00:18:40,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:40,044 INFO L482 AbstractCegarLoop]: Abstraction has 45665 states and 176680 transitions. [2021-06-06 00:18:40,044 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 00:18:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 45665 states and 176680 transitions. [2021-06-06 00:18:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:40,118 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:40,118 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 00:18:40,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4177,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:40,319 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:40,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1151103012, now seen corresponding path program 161 times [2021-06-06 00:18:40,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:40,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370234109] [2021-06-06 00:18:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:40,354 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 00:18:40,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:40,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370234109] [2021-06-06 00:18:40,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370234109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:40,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551755547] [2021-06-06 00:18:40,354 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 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 00:18:40,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:18:40,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:40,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:40,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:40,460 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 00:18:40,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551755547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:40,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:40,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:18:40,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161186607] [2021-06-06 00:18:40,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:40,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:40,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:40,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:40,461 INFO L87 Difference]: Start difference. First operand 45665 states and 176680 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 00:18:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:41,538 INFO L93 Difference]: Finished difference Result 65301 states and 246293 transitions. [2021-06-06 00:18:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-06 00:18:41,538 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 00:18:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:41,994 INFO L225 Difference]: With dead ends: 65301 [2021-06-06 00:18:41,995 INFO L226 Difference]: Without dead ends: 65301 [2021-06-06 00:18:41,995 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 496.1ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-06 00:18:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65301 states. [2021-06-06 00:18:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65301 to 45695. [2021-06-06 00:18:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45695 states, 45694 states have (on average 3.8689324637808027) internal successors, (176787), 45694 states have internal predecessors, (176787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45695 states to 45695 states and 176787 transitions. [2021-06-06 00:18:43,320 INFO L78 Accepts]: Start accepts. Automaton has 45695 states and 176787 transitions. Word has length 28 [2021-06-06 00:18:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:43,321 INFO L482 AbstractCegarLoop]: Abstraction has 45695 states and 176787 transitions. [2021-06-06 00:18:43,321 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 00:18:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 45695 states and 176787 transitions. [2021-06-06 00:18:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:43,395 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:43,395 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 00:18:43,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4178 [2021-06-06 00:18:43,611 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:43,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1490504108, now seen corresponding path program 162 times [2021-06-06 00:18:43,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:43,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470812082] [2021-06-06 00:18:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:43,645 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 00:18:43,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:43,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470812082] [2021-06-06 00:18:43,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470812082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:43,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206844608] [2021-06-06 00:18:43,646 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 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 00:18:43,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:18:43,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:43,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:43,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:43,760 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 00:18:43,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206844608] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:43,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:43,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:18:43,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332462832] [2021-06-06 00:18:43,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:18:43,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:43,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:18:43,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:18:43,761 INFO L87 Difference]: Start difference. First operand 45695 states and 176787 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 00:18:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:45,486 INFO L93 Difference]: Finished difference Result 66159 states and 248729 transitions. [2021-06-06 00:18:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-06 00:18:45,487 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 00:18:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:45,674 INFO L225 Difference]: With dead ends: 66159 [2021-06-06 00:18:45,675 INFO L226 Difference]: Without dead ends: 66159 [2021-06-06 00:18:45,675 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 835.5ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-06 00:18:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66159 states. [2021-06-06 00:18:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66159 to 45959. [2021-06-06 00:18:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45959 states, 45958 states have (on average 3.8653770834239958) internal successors, (177645), 45958 states have internal predecessors, (177645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45959 states to 45959 states and 177645 transitions. [2021-06-06 00:18:47,171 INFO L78 Accepts]: Start accepts. Automaton has 45959 states and 177645 transitions. Word has length 28 [2021-06-06 00:18:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:47,172 INFO L482 AbstractCegarLoop]: Abstraction has 45959 states and 177645 transitions. [2021-06-06 00:18:47,172 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 00:18:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 45959 states and 177645 transitions. [2021-06-06 00:18:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:47,236 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:47,236 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 00:18:47,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4179,240 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:47,436 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:47,436 INFO L82 PathProgramCache]: Analyzing trace with hash 152535046, now seen corresponding path program 163 times [2021-06-06 00:18:47,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:47,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713461461] [2021-06-06 00:18:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:47,471 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 00:18:47,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:47,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713461461] [2021-06-06 00:18:47,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713461461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:47,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057994472] [2021-06-06 00:18:47,471 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 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 00:18:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:47,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:47,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:47,581 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 00:18:47,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057994472] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:47,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:47,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-06 00:18:47,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635127523] [2021-06-06 00:18:47,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:18:47,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:47,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:18:47,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:18:47,582 INFO L87 Difference]: Start difference. First operand 45959 states and 177645 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 00:18:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:49,048 INFO L93 Difference]: Finished difference Result 65371 states and 246494 transitions. [2021-06-06 00:18:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-06 00:18:49,048 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 00:18:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:49,246 INFO L225 Difference]: With dead ends: 65371 [2021-06-06 00:18:49,246 INFO L226 Difference]: Without dead ends: 65367 [2021-06-06 00:18:49,247 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 867.0ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-06 00:18:49,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65367 states. [2021-06-06 00:18:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65367 to 45595. [2021-06-06 00:18:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45595 states, 45594 states have (on average 3.8691275167785233) internal successors, (176409), 45594 states have internal predecessors, (176409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45595 states to 45595 states and 176409 transitions. [2021-06-06 00:18:50,617 INFO L78 Accepts]: Start accepts. Automaton has 45595 states and 176409 transitions. Word has length 28 [2021-06-06 00:18:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:50,617 INFO L482 AbstractCegarLoop]: Abstraction has 45595 states and 176409 transitions. [2021-06-06 00:18:50,617 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 00:18:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 45595 states and 176409 transitions. [2021-06-06 00:18:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:50,688 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:50,688 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 00:18:50,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4180,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:50,888 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:50,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1936993134, now seen corresponding path program 164 times [2021-06-06 00:18:50,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:50,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230466055] [2021-06-06 00:18:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:50,924 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 00:18:50,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:50,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230466055] [2021-06-06 00:18:50,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230466055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:50,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540226343] [2021-06-06 00:18:50,925 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 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 00:18:50,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:18:50,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:50,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:50,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:51,030 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 00:18:51,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540226343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:51,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:51,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:18:51,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321211065] [2021-06-06 00:18:51,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:51,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:51,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:51,031 INFO L87 Difference]: Start difference. First operand 45595 states and 176409 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 00:18:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:52,199 INFO L93 Difference]: Finished difference Result 59692 states and 226868 transitions. [2021-06-06 00:18:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-06 00:18:52,200 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 00:18:52,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:52,365 INFO L225 Difference]: With dead ends: 59692 [2021-06-06 00:18:52,365 INFO L226 Difference]: Without dead ends: 59692 [2021-06-06 00:18:52,365 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 690.0ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-06 00:18:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59692 states. [2021-06-06 00:18:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59692 to 45611. [2021-06-06 00:18:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45611 states, 45610 states have (on average 3.8710151282613463) internal successors, (176557), 45610 states have internal predecessors, (176557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45611 states to 45611 states and 176557 transitions. [2021-06-06 00:18:53,611 INFO L78 Accepts]: Start accepts. Automaton has 45611 states and 176557 transitions. Word has length 28 [2021-06-06 00:18:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:53,611 INFO L482 AbstractCegarLoop]: Abstraction has 45611 states and 176557 transitions. [2021-06-06 00:18:53,611 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 00:18:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 45611 states and 176557 transitions. [2021-06-06 00:18:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:53,680 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:53,680 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 00:18:53,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4181,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:53,880 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:53,880 INFO L82 PathProgramCache]: Analyzing trace with hash -756673454, now seen corresponding path program 165 times [2021-06-06 00:18:53,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:53,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189273055] [2021-06-06 00:18:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:53,918 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 00:18:53,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:53,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189273055] [2021-06-06 00:18:53,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189273055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:53,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699495955] [2021-06-06 00:18:53,919 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 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 00:18:53,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:18:53,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:53,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:53,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:54,023 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 00:18:54,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699495955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:54,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:54,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:18:54,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586486121] [2021-06-06 00:18:54,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:54,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:54,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:54,024 INFO L87 Difference]: Start difference. First operand 45611 states and 176557 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 00:18:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:55,009 INFO L93 Difference]: Finished difference Result 59006 states and 224993 transitions. [2021-06-06 00:18:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-06 00:18:55,010 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 00:18:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:55,178 INFO L225 Difference]: With dead ends: 59006 [2021-06-06 00:18:55,178 INFO L226 Difference]: Without dead ends: 58994 [2021-06-06 00:18:55,179 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 335.7ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-06 00:18:55,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58994 states. [2021-06-06 00:18:56,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58994 to 45545. [2021-06-06 00:18:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45545 states, 45544 states have (on average 3.8721675742139468) internal successors, (176354), 45544 states have internal predecessors, (176354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45545 states to 45545 states and 176354 transitions. [2021-06-06 00:18:56,481 INFO L78 Accepts]: Start accepts. Automaton has 45545 states and 176354 transitions. Word has length 28 [2021-06-06 00:18:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:56,481 INFO L482 AbstractCegarLoop]: Abstraction has 45545 states and 176354 transitions. [2021-06-06 00:18:56,482 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 00:18:56,482 INFO L276 IsEmpty]: Start isEmpty. Operand 45545 states and 176354 transitions. [2021-06-06 00:18:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:56,550 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:56,550 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 00:18:56,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4182 [2021-06-06 00:18:56,750 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:56,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1537074702, now seen corresponding path program 166 times [2021-06-06 00:18:56,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:56,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793310703] [2021-06-06 00:18:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:56,787 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 00:18:56,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:56,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793310703] [2021-06-06 00:18:56,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793310703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:56,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401788937] [2021-06-06 00:18:56,787 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 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 00:18:56,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:18:56,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:56,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:56,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:56,898 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 00:18:56,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401788937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:56,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:56,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-06 00:18:56,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606599508] [2021-06-06 00:18:56,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-06 00:18:56,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:56,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-06 00:18:56,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-06 00:18:56,899 INFO L87 Difference]: Start difference. First operand 45545 states and 176354 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 00:18:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:18:57,534 INFO L93 Difference]: Finished difference Result 50032 states and 191152 transitions. [2021-06-06 00:18:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-06 00:18:57,535 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 00:18:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:18:57,963 INFO L225 Difference]: With dead ends: 50032 [2021-06-06 00:18:57,964 INFO L226 Difference]: Without dead ends: 50032 [2021-06-06 00:18:57,964 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-06 00:18:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50032 states. [2021-06-06 00:18:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50032 to 45753. [2021-06-06 00:18:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45753 states, 45752 states have (on average 3.86968875677566) internal successors, (177046), 45752 states have internal predecessors, (177046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:18:59,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45753 states to 45753 states and 177046 transitions. [2021-06-06 00:18:59,253 INFO L78 Accepts]: Start accepts. Automaton has 45753 states and 177046 transitions. Word has length 28 [2021-06-06 00:18:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:18:59,253 INFO L482 AbstractCegarLoop]: Abstraction has 45753 states and 177046 transitions. [2021-06-06 00:18:59,253 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 00:18:59,253 INFO L276 IsEmpty]: Start isEmpty. Operand 45753 states and 177046 transitions. [2021-06-06 00:18:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:18:59,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:18:59,328 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 00:18:59,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4183,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:18:59,541 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:18:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:18:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash 538506736, now seen corresponding path program 167 times [2021-06-06 00:18:59,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:18:59,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831098075] [2021-06-06 00:18:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:18:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:18:59,575 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 00:18:59,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:18:59,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831098075] [2021-06-06 00:18:59,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831098075] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:59,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578037626] [2021-06-06 00:18:59,576 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 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 00:18:59,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:18:59,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:18:59,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:18:59,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:18:59,686 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 00:18:59,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578037626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:18:59,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:18:59,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-06 00:18:59,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059346895] [2021-06-06 00:18:59,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-06 00:18:59,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:18:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-06 00:18:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-06 00:18:59,687 INFO L87 Difference]: Start difference. First operand 45753 states and 177046 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 00:19:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:00,286 INFO L93 Difference]: Finished difference Result 49879 states and 190754 transitions. [2021-06-06 00:19:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:19:00,286 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 00:19:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:00,432 INFO L225 Difference]: With dead ends: 49879 [2021-06-06 00:19:00,433 INFO L226 Difference]: Without dead ends: 49875 [2021-06-06 00:19:00,433 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 268.0ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:19:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49875 states. [2021-06-06 00:19:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49875 to 45693. [2021-06-06 00:19:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45693 states, 45692 states have (on average 3.8705681519740875) internal successors, (176854), 45692 states have internal predecessors, (176854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45693 states to 45693 states and 176854 transitions. [2021-06-06 00:19:01,699 INFO L78 Accepts]: Start accepts. Automaton has 45693 states and 176854 transitions. Word has length 28 [2021-06-06 00:19:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:01,699 INFO L482 AbstractCegarLoop]: Abstraction has 45693 states and 176854 transitions. [2021-06-06 00:19:01,699 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 00:19:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 45693 states and 176854 transitions. [2021-06-06 00:19:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:01,768 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:01,768 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 00:19:01,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4184 [2021-06-06 00:19:01,968 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:01,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:01,969 INFO L82 PathProgramCache]: Analyzing trace with hash 508703680, now seen corresponding path program 78 times [2021-06-06 00:19:01,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:01,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232332172] [2021-06-06 00:19:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:02,005 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 00:19:02,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:02,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232332172] [2021-06-06 00:19:02,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232332172] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:02,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473037847] [2021-06-06 00:19:02,005 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 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 00:19:02,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:19:02,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:02,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:19:02,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:02,077 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 00:19:02,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473037847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:02,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:02,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:19:02,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244393093] [2021-06-06 00:19:02,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:19:02,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:02,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:19:02,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:19:02,078 INFO L87 Difference]: Start difference. First operand 45693 states and 176854 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 00:19:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:02,812 INFO L93 Difference]: Finished difference Result 49934 states and 190867 transitions. [2021-06-06 00:19:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-06 00:19:02,813 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 00:19:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:02,947 INFO L225 Difference]: With dead ends: 49934 [2021-06-06 00:19:02,948 INFO L226 Difference]: Without dead ends: 49934 [2021-06-06 00:19:02,948 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 194.8ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-06 00:19:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49934 states. [2021-06-06 00:19:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49934 to 45797. [2021-06-06 00:19:03,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45797 states, 45796 states have (on average 3.8688531749497774) internal successors, (177178), 45796 states have internal predecessors, (177178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45797 states to 45797 states and 177178 transitions. [2021-06-06 00:19:04,126 INFO L78 Accepts]: Start accepts. Automaton has 45797 states and 177178 transitions. Word has length 28 [2021-06-06 00:19:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:04,126 INFO L482 AbstractCegarLoop]: Abstraction has 45797 states and 177178 transitions. [2021-06-06 00:19:04,126 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 00:19:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 45797 states and 177178 transitions. [2021-06-06 00:19:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:04,195 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:04,195 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 00:19:04,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4185,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:04,396 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:04,396 INFO L82 PathProgramCache]: Analyzing trace with hash -751583464, now seen corresponding path program 79 times [2021-06-06 00:19:04,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:04,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279661079] [2021-06-06 00:19:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:04,432 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 00:19:04,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:04,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279661079] [2021-06-06 00:19:04,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279661079] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:04,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535475484] [2021-06-06 00:19:04,432 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 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 00:19:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:04,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:19:04,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:04,541 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 00:19:04,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535475484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:04,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:04,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-06 00:19:04,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970329995] [2021-06-06 00:19:04,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-06 00:19:04,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:04,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-06 00:19:04,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-06 00:19:04,542 INFO L87 Difference]: Start difference. First operand 45797 states and 177178 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 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 00:19:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:05,130 INFO L93 Difference]: Finished difference Result 56721 states and 216081 transitions. [2021-06-06 00:19:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:19:05,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 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 28 [2021-06-06 00:19:05,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:05,291 INFO L225 Difference]: With dead ends: 56721 [2021-06-06 00:19:05,292 INFO L226 Difference]: Without dead ends: 56631 [2021-06-06 00:19:05,293 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 259.7ms TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2021-06-06 00:19:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56631 states. [2021-06-06 00:19:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56631 to 45626. [2021-06-06 00:19:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45626 states, 45625 states have (on average 3.866717808219178) internal successors, (176419), 45625 states have internal predecessors, (176419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:06,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45626 states to 45626 states and 176419 transitions. [2021-06-06 00:19:06,658 INFO L78 Accepts]: Start accepts. Automaton has 45626 states and 176419 transitions. Word has length 28 [2021-06-06 00:19:06,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:06,658 INFO L482 AbstractCegarLoop]: Abstraction has 45626 states and 176419 transitions. [2021-06-06 00:19:06,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 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 00:19:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 45626 states and 176419 transitions. [2021-06-06 00:19:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:06,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:06,998 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 00:19:07,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4186 [2021-06-06 00:19:07,199 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1414052632, now seen corresponding path program 80 times [2021-06-06 00:19:07,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:07,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449451664] [2021-06-06 00:19:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:07,229 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 00:19:07,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:07,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449451664] [2021-06-06 00:19:07,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449451664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:07,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808736652] [2021-06-06 00:19:07,230 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 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 00:19:07,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:19:07,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:07,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:19:07,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:07,296 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 00:19:07,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808736652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:07,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:07,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-06 00:19:07,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996935521] [2021-06-06 00:19:07,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-06 00:19:07,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:07,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-06 00:19:07,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-06 00:19:07,297 INFO L87 Difference]: Start difference. First operand 45626 states and 176419 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 00:19:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:07,759 INFO L93 Difference]: Finished difference Result 50119 states and 191428 transitions. [2021-06-06 00:19:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:19:07,759 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 00:19:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:07,903 INFO L225 Difference]: With dead ends: 50119 [2021-06-06 00:19:07,904 INFO L226 Difference]: Without dead ends: 50107 [2021-06-06 00:19:07,904 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:19:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50107 states. [2021-06-06 00:19:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50107 to 45780. [2021-06-06 00:19:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 3.864523034579174) internal successors, (176914), 45779 states have internal predecessors, (176914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 176914 transitions. [2021-06-06 00:19:09,090 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 176914 transitions. Word has length 28 [2021-06-06 00:19:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:09,090 INFO L482 AbstractCegarLoop]: Abstraction has 45780 states and 176914 transitions. [2021-06-06 00:19:09,090 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 00:19:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 176914 transitions. [2021-06-06 00:19:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:09,172 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:09,172 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 00:19:09,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 248 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4187 [2021-06-06 00:19:09,381 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash 421559068, now seen corresponding path program 81 times [2021-06-06 00:19:09,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:09,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666349246] [2021-06-06 00:19:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:09,424 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 00:19:09,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:09,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666349246] [2021-06-06 00:19:09,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666349246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:09,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019416506] [2021-06-06 00:19:09,424 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 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 00:19:09,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:19:09,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:09,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-06 00:19:09,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:09,489 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 00:19:09,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019416506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:09,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:09,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-06 00:19:09,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265945587] [2021-06-06 00:19:09,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-06 00:19:09,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:09,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-06 00:19:09,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-06 00:19:09,490 INFO L87 Difference]: Start difference. First operand 45780 states and 176914 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 00:19:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:09,952 INFO L93 Difference]: Finished difference Result 50083 states and 191344 transitions. [2021-06-06 00:19:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-06 00:19:09,953 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 00:19:09,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:10,097 INFO L225 Difference]: With dead ends: 50083 [2021-06-06 00:19:10,097 INFO L226 Difference]: Without dead ends: 50063 [2021-06-06 00:19:10,097 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-06 00:19:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50063 states. [2021-06-06 00:19:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50063 to 45780. [2021-06-06 00:19:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 3.8644356582712596) internal successors, (176910), 45779 states have internal predecessors, (176910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 176910 transitions. [2021-06-06 00:19:11,543 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 176910 transitions. Word has length 28 [2021-06-06 00:19:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:11,543 INFO L482 AbstractCegarLoop]: Abstraction has 45780 states and 176910 transitions. [2021-06-06 00:19:11,543 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 00:19:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 176910 transitions. [2021-06-06 00:19:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:11,618 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:11,618 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 00:19:11,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4188 [2021-06-06 00:19:11,819 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:11,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:11,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1989119940, now seen corresponding path program 168 times [2021-06-06 00:19:11,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:11,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547342341] [2021-06-06 00:19:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:11,851 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 00:19:11,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:11,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547342341] [2021-06-06 00:19:11,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547342341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:11,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66928317] [2021-06-06 00:19:11,851 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 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 00:19:11,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-06 00:19:11,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:11,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:19:11,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:11,931 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 00:19:11,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66928317] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:11,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:11,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:19:11,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397210439] [2021-06-06 00:19:11,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:19:11,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:11,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:19:11,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:19:11,931 INFO L87 Difference]: Start difference. First operand 45780 states and 176910 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 00:19:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:12,406 INFO L93 Difference]: Finished difference Result 50741 states and 194475 transitions. [2021-06-06 00:19:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:19:12,406 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 00:19:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:12,558 INFO L225 Difference]: With dead ends: 50741 [2021-06-06 00:19:12,558 INFO L226 Difference]: Without dead ends: 50728 [2021-06-06 00:19:12,559 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:19:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50728 states. [2021-06-06 00:19:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50728 to 48513. [2021-06-06 00:19:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48513 states, 48512 states have (on average 3.873330310026385) internal successors, (187903), 48512 states have internal predecessors, (187903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48513 states to 48513 states and 187903 transitions. [2021-06-06 00:19:13,768 INFO L78 Accepts]: Start accepts. Automaton has 48513 states and 187903 transitions. Word has length 28 [2021-06-06 00:19:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:13,768 INFO L482 AbstractCegarLoop]: Abstraction has 48513 states and 187903 transitions. [2021-06-06 00:19:13,768 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 00:19:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 48513 states and 187903 transitions. [2021-06-06 00:19:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:13,843 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:13,843 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, 1, 1] [2021-06-06 00:19:14,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4189 [2021-06-06 00:19:14,044 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1306375610, now seen corresponding path program 169 times [2021-06-06 00:19:14,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:14,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378326309] [2021-06-06 00:19:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:14,079 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 00:19:14,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:14,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378326309] [2021-06-06 00:19:14,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378326309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:14,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506246830] [2021-06-06 00:19:14,079 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 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 00:19:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:14,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:19:14,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:14,161 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 00:19:14,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506246830] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:14,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:14,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:19:14,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296078283] [2021-06-06 00:19:14,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:19:14,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:14,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:19:14,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:19:14,162 INFO L87 Difference]: Start difference. First operand 48513 states and 187903 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 00:19:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:14,875 INFO L93 Difference]: Finished difference Result 54090 states and 205931 transitions. [2021-06-06 00:19:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-06 00:19:14,876 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 00:19:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:15,021 INFO L225 Difference]: With dead ends: 54090 [2021-06-06 00:19:15,022 INFO L226 Difference]: Without dead ends: 54090 [2021-06-06 00:19:15,022 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 144.7ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-06 00:19:15,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54090 states. [2021-06-06 00:19:15,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54090 to 43050. [2021-06-06 00:19:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43050 states, 43049 states have (on average 3.8601593532950824) internal successors, (166176), 43049 states have internal predecessors, (166176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43050 states to 43050 states and 166176 transitions. [2021-06-06 00:19:16,264 INFO L78 Accepts]: Start accepts. Automaton has 43050 states and 166176 transitions. Word has length 28 [2021-06-06 00:19:16,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:16,264 INFO L482 AbstractCegarLoop]: Abstraction has 43050 states and 166176 transitions. [2021-06-06 00:19:16,264 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 00:19:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 43050 states and 166176 transitions. [2021-06-06 00:19:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:16,335 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:16,335 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 00:19:16,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4190,251 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:16,535 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:16,536 INFO L82 PathProgramCache]: Analyzing trace with hash 986257146, now seen corresponding path program 170 times [2021-06-06 00:19:16,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:16,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708921632] [2021-06-06 00:19:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:16,567 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 00:19:16,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:16,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708921632] [2021-06-06 00:19:16,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708921632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:16,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503888559] [2021-06-06 00:19:16,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:19:16,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:19:16,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:16,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:19:16,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:16,649 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 00:19:16,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503888559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:16,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:16,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-06 00:19:16,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819648625] [2021-06-06 00:19:16,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:19:16,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:16,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:19:16,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:19:16,650 INFO L87 Difference]: Start difference. First operand 43050 states and 166176 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 00:19:17,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:17,165 INFO L93 Difference]: Finished difference Result 47933 states and 182630 transitions. [2021-06-06 00:19:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-06 00:19:17,165 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 00:19:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:17,288 INFO L225 Difference]: With dead ends: 47933 [2021-06-06 00:19:17,288 INFO L226 Difference]: Without dead ends: 47933 [2021-06-06 00:19:17,288 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-06 00:19:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47933 states. [2021-06-06 00:19:18,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47933 to 43883. [2021-06-06 00:19:18,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43883 states, 43882 states have (on average 3.858848730686842) internal successors, (169334), 43882 states have internal predecessors, (169334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43883 states to 43883 states and 169334 transitions. [2021-06-06 00:19:18,365 INFO L78 Accepts]: Start accepts. Automaton has 43883 states and 169334 transitions. Word has length 28 [2021-06-06 00:19:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:18,366 INFO L482 AbstractCegarLoop]: Abstraction has 43883 states and 169334 transitions. [2021-06-06 00:19:18,366 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 00:19:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43883 states and 169334 transitions. [2021-06-06 00:19:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:18,434 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:18,434 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 00:19:18,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4191 [2021-06-06 00:19:18,649 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:18,650 INFO L82 PathProgramCache]: Analyzing trace with hash -22913030, now seen corresponding path program 171 times [2021-06-06 00:19:18,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:18,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545047341] [2021-06-06 00:19:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:18,687 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 00:19:18,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:18,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545047341] [2021-06-06 00:19:18,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545047341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:18,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172134928] [2021-06-06 00:19:18,688 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 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 00:19:18,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:19:18,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:18,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:19:18,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:18,771 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 00:19:18,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172134928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:18,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:18,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-06 00:19:18,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726379428] [2021-06-06 00:19:18,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-06 00:19:18,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:18,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-06 00:19:18,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-06 00:19:18,773 INFO L87 Difference]: Start difference. First operand 43883 states and 169334 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 00:19:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:19,240 INFO L93 Difference]: Finished difference Result 45643 states and 175210 transitions. [2021-06-06 00:19:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-06 00:19:19,241 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 00:19:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:19,620 INFO L225 Difference]: With dead ends: 45643 [2021-06-06 00:19:19,620 INFO L226 Difference]: Without dead ends: 45643 [2021-06-06 00:19:19,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:19:19,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45643 states. [2021-06-06 00:19:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45643 to 43891. [2021-06-06 00:19:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43891 states, 43890 states have (on average 3.8586921850079743) internal successors, (169358), 43890 states have internal predecessors, (169358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43891 states to 43891 states and 169358 transitions. [2021-06-06 00:19:20,503 INFO L78 Accepts]: Start accepts. Automaton has 43891 states and 169358 transitions. Word has length 28 [2021-06-06 00:19:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:20,503 INFO L482 AbstractCegarLoop]: Abstraction has 43891 states and 169358 transitions. [2021-06-06 00:19:20,503 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 00:19:20,503 INFO L276 IsEmpty]: Start isEmpty. Operand 43891 states and 169358 transitions. [2021-06-06 00:19:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-06 00:19:20,831 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:20,831 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 00:19:21,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4192 [2021-06-06 00:19:21,046 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:21,047 INFO L82 PathProgramCache]: Analyzing trace with hash -120181494, now seen corresponding path program 172 times [2021-06-06 00:19:21,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:21,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424891819] [2021-06-06 00:19:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:21,083 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 00:19:21,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:21,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424891819] [2021-06-06 00:19:21,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424891819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:21,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361276810] [2021-06-06 00:19:21,084 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 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 00:19:21,106 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:19:21,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:21,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-06 00:19:21,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:21,167 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 00:19:21,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361276810] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:21,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:21,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-06 00:19:21,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498740620] [2021-06-06 00:19:21,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-06 00:19:21,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:21,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-06 00:19:21,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-06 00:19:21,168 INFO L87 Difference]: Start difference. First operand 43891 states and 169358 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 00:19:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:21,616 INFO L93 Difference]: Finished difference Result 45363 states and 174288 transitions. [2021-06-06 00:19:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-06 00:19:21,617 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 00:19:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:21,729 INFO L225 Difference]: With dead ends: 45363 [2021-06-06 00:19:21,729 INFO L226 Difference]: Without dead ends: 45363 [2021-06-06 00:19:21,730 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:19:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45363 states. [2021-06-06 00:19:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45363 to 43785. [2021-06-06 00:19:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43785 states, 43784 states have (on average 3.858350082221816) internal successors, (168934), 43784 states have internal predecessors, (168934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43785 states to 43785 states and 168934 transitions. [2021-06-06 00:19:22,786 INFO L78 Accepts]: Start accepts. Automaton has 43785 states and 168934 transitions. Word has length 28 [2021-06-06 00:19:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:22,786 INFO L482 AbstractCegarLoop]: Abstraction has 43785 states and 168934 transitions. [2021-06-06 00:19:22,786 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 00:19:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 43785 states and 168934 transitions. [2021-06-06 00:19:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:19:22,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:22,861 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 00:19:23,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4193,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:19:23,069 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:23,069 INFO L82 PathProgramCache]: Analyzing trace with hash -915745990, now seen corresponding path program 173 times [2021-06-06 00:19:23,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:23,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073630384] [2021-06-06 00:19:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:23,494 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-06 00:19:23,630 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-06-06 00:19:23,783 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-06 00:19:23,925 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2021-06-06 00:19:24,000 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 00:19:24,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:24,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073630384] [2021-06-06 00:19:24,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073630384] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:24,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348323667] [2021-06-06 00:19:24,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 00:19:24,027 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:19:24,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:24,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-06 00:19:24,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:24,285 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-06 00:19:24,489 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-06 00:19:24,703 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-06 00:19:25,224 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2021-06-06 00:19:25,431 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:19:25,629 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-06 00:19:25,915 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-06 00:19:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,186 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 21 treesize of output 13 [2021-06-06 00:19:26,187 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,200 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 35 treesize of output 19 [2021-06-06 00:19:26,201 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,214 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:19:26,215 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,229 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 33 treesize of output 19 [2021-06-06 00:19:26,230 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,243 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 00:19:26,244 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,260 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 35 treesize of output 19 [2021-06-06 00:19:26,261 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,274 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 33 treesize of output 19 [2021-06-06 00:19:26,275 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:19:26,285 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,637 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 113 [2021-06-06 00:19:26,638 INFO L628 ElimStorePlain]: treesize reduction 98, result has 81.7 percent of original size [2021-06-06 00:19:26,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,649 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 35 treesize of output 19 [2021-06-06 00:19:26,650 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:19:26,661 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,671 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 33 treesize of output 19 [2021-06-06 00:19:26,672 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,682 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 35 treesize of output 19 [2021-06-06 00:19:26,683 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,693 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 21 treesize of output 13 [2021-06-06 00:19:26,694 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,704 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 35 treesize of output 19 [2021-06-06 00:19:26,705 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,714 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:19:26,715 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:26,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:26,721 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-06 00:19:26,723 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:26,826 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-06 00:19:26,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:26,833 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 2 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-06 00:19:26,833 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 20 variables, input treesize:725, output treesize:97 [2021-06-06 00:19:26,926 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 00:19:26,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348323667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:26,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:26,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-06 00:19:26,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799580855] [2021-06-06 00:19:26,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-06 00:19:26,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:26,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-06 00:19:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-06-06 00:19:26,927 INFO L87 Difference]: Start difference. First operand 43785 states and 168934 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:27,659 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-06-06 00:19:28,299 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 92 [2021-06-06 00:19:28,540 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2021-06-06 00:19:28,706 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-06-06 00:19:28,896 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2021-06-06 00:19:29,071 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-06-06 00:19:29,627 WARN L205 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2021-06-06 00:19:29,952 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 94 [2021-06-06 00:19:30,962 WARN L205 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 133 [2021-06-06 00:19:31,533 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-06-06 00:19:31,686 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-06 00:19:32,807 WARN L205 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 117 [2021-06-06 00:19:33,541 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 136 [2021-06-06 00:19:34,130 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 112 [2021-06-06 00:19:34,816 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 138 [2021-06-06 00:19:35,541 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 136 [2021-06-06 00:19:35,716 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-06-06 00:19:36,479 WARN L205 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 144 [2021-06-06 00:19:36,763 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-06-06 00:19:37,690 WARN L205 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 142 [2021-06-06 00:19:38,026 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2021-06-06 00:19:38,218 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2021-06-06 00:19:38,582 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-06-06 00:19:38,878 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2021-06-06 00:19:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:19:39,123 INFO L93 Difference]: Finished difference Result 51109 states and 190238 transitions. [2021-06-06 00:19:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-06 00:19:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have 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 00:19:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:19:39,250 INFO L225 Difference]: With dead ends: 51109 [2021-06-06 00:19:39,250 INFO L226 Difference]: Without dead ends: 51049 [2021-06-06 00:19:39,251 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 12908.4ms TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:19:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51049 states. [2021-06-06 00:19:40,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51049 to 43920. [2021-06-06 00:19:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43920 states, 43919 states have (on average 3.8575331860925797) internal successors, (169419), 43919 states have internal predecessors, (169419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43920 states to 43920 states and 169419 transitions. [2021-06-06 00:19:40,246 INFO L78 Accepts]: Start accepts. Automaton has 43920 states and 169419 transitions. Word has length 30 [2021-06-06 00:19:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:19:40,246 INFO L482 AbstractCegarLoop]: Abstraction has 43920 states and 169419 transitions. [2021-06-06 00:19:40,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:19:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 43920 states and 169419 transitions. [2021-06-06 00:19:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:19:40,455 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:19:40,455 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 00:19:40,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4194 [2021-06-06 00:19:40,655 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:19:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:19:40,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1350823290, now seen corresponding path program 174 times [2021-06-06 00:19:40,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:19:40,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990848292] [2021-06-06 00:19:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:19:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:19:41,011 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-06-06 00:19:41,160 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-06-06 00:19:41,459 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 00:19:41,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:19:41,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990848292] [2021-06-06 00:19:41,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990848292] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:41,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140767079] [2021-06-06 00:19:41,460 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 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 00:19:41,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:19:41,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:19:41,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:19:41,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:19:42,018 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-06 00:19:42,302 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-06 00:19:43,071 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 134 [2021-06-06 00:19:43,340 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-06 00:19:44,290 WARN L205 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 181 [2021-06-06 00:19:44,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:44,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:44,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:44,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:44,571 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 36 treesize of output 19 [2021-06-06 00:19:44,572 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:44,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:44,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:44,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 19 [2021-06-06 00:19:44,590 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:45,377 WARN L205 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 217 [2021-06-06 00:19:45,377 INFO L628 ElimStorePlain]: treesize reduction 665, result has 42.2 percent of original size [2021-06-06 00:19:45,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:45,390 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 33 treesize of output 19 [2021-06-06 00:19:45,391 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:45,591 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-06-06 00:19:45,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:45,606 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 00:19:45,607 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:45,807 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-06-06 00:19:45,807 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:45,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:45,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:45,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:45,820 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 22 [2021-06-06 00:19:45,821 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,001 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-06-06 00:19:46,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:19:46,015 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,184 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2021-06-06 00:19:46,184 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,196 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 19 [2021-06-06 00:19:46,197 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,359 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-06-06 00:19:46,359 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:19:46,372 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,524 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-06 00:19:46,524 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 19 [2021-06-06 00:19:46,538 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,677 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-06 00:19:46,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,690 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 35 treesize of output 19 [2021-06-06 00:19:46,691 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,839 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-06 00:19:46,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,849 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 16 treesize of output 10 [2021-06-06 00:19:46,851 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:46,977 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-06 00:19:46,977 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:46,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:19:46,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:19:46,988 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 00:19:46,989 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:19:47,107 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-06 00:19:47,108 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:19:47,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 33 dim-0 vars, 11 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-06 00:19:47,114 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 44 variables, input treesize:1231, output treesize:100 [2021-06-06 00:19:47,210 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 00:19:47,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140767079] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:19:47,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:19:47,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:19:47,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813259371] [2021-06-06 00:19:47,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:19:47,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:19:47,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:19:47,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:19:47,211 INFO L87 Difference]: Start difference. First operand 43920 states and 169419 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 00:19:47,660 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 52 [2021-06-06 00:19:47,988 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2021-06-06 00:19:48,134 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-06-06 00:19:49,181 WARN L205 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-06-06 00:19:49,685 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2021-06-06 00:19:49,938 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2021-06-06 00:19:50,276 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2021-06-06 00:19:51,644 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2021-06-06 00:19:52,718 WARN L205 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 148 [2021-06-06 00:19:52,932 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2021-06-06 00:19:53,127 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-06 00:19:55,048 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2021-06-06 00:19:55,542 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 146 [2021-06-06 00:19:56,107 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 147 [2021-06-06 00:19:56,495 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 72 [2021-06-06 00:19:56,893 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-06-06 00:19:59,035 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 251 DAG size of output: 213 [2021-06-06 00:19:59,248 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 66 [2021-06-06 00:19:59,444 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2021-06-06 00:19:59,794 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 63 [2021-06-06 00:20:00,064 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 56 [2021-06-06 00:20:00,377 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-06-06 00:20:00,636 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 50 [2021-06-06 00:20:01,207 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 61 [2021-06-06 00:20:01,632 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2021-06-06 00:20:02,159 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2021-06-06 00:20:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:20:02,302 INFO L93 Difference]: Finished difference Result 51275 states and 190720 transitions. [2021-06-06 00:20:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-06 00:20:02,303 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 00:20:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:20:02,444 INFO L225 Difference]: With dead ends: 51275 [2021-06-06 00:20:02,444 INFO L226 Difference]: Without dead ends: 51176 [2021-06-06 00:20:02,445 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 16304.5ms TimeCoverageRelationStatistics Valid=600, Invalid=2706, Unknown=0, NotChecked=0, Total=3306 [2021-06-06 00:20:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51176 states. [2021-06-06 00:20:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51176 to 43931. [2021-06-06 00:20:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43931 states, 43930 states have (on average 3.857546096061917) internal successors, (169462), 43930 states have internal predecessors, (169462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43931 states to 43931 states and 169462 transitions. [2021-06-06 00:20:03,524 INFO L78 Accepts]: Start accepts. Automaton has 43931 states and 169462 transitions. Word has length 30 [2021-06-06 00:20:03,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:20:03,524 INFO L482 AbstractCegarLoop]: Abstraction has 43931 states and 169462 transitions. [2021-06-06 00:20:03,524 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 00:20:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 43931 states and 169462 transitions. [2021-06-06 00:20:03,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:20:03,596 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:20:03,596 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 00:20:03,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4217,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:03,796 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:20:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:20:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1352714698, now seen corresponding path program 175 times [2021-06-06 00:20:03,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:20:03,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54877661] [2021-06-06 00:20:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:20:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:04,013 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 54 [2021-06-06 00:20:04,485 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2021-06-06 00:20:04,768 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-06 00:20:04,951 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 117 [2021-06-06 00:20:05,265 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2021-06-06 00:20:05,700 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 158 [2021-06-06 00:20:06,310 WARN L205 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 76 [2021-06-06 00:20:06,537 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-06-06 00:20:06,741 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-06-06 00:20:06,888 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 00:20:06,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:20:06,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54877661] [2021-06-06 00:20:06,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54877661] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:06,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226715630] [2021-06-06 00:20:06,888 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 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 00:20:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:06,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:20:06,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:08,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,130 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 28 [2021-06-06 00:20:08,130 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,143 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 00:20:08,144 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,156 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 52 treesize of output 28 [2021-06-06 00:20:08,157 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 00:20:08,170 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,183 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 00:20:08,184 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,197 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 54 treesize of output 28 [2021-06-06 00:20:08,197 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,217 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 00:20:08,218 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,230 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 44 treesize of output 16 [2021-06-06 00:20:08,231 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,244 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 00:20:08,245 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,256 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 43 treesize of output 22 [2021-06-06 00:20:08,257 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,269 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 00:20:08,270 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,282 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 00:20:08,283 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,298 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 00:20:08,299 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,314 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 00:20:08,315 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,327 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 00:20:08,328 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,340 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 00:20:08,341 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,353 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 00:20:08,354 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,366 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 00:20:08,367 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,380 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 00:20:08,381 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,394 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 00:20:08,394 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,409 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 54 treesize of output 22 [2021-06-06 00:20:08,410 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,423 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 00:20:08,424 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,436 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 00:20:08,436 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,450 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 00:20:08,451 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,464 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 45 treesize of output 25 [2021-06-06 00:20:08,464 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,482 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 00:20:08,483 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,497 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 43 treesize of output 22 [2021-06-06 00:20:08,498 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,514 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 00:20:08,515 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,530 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 45 treesize of output 25 [2021-06-06 00:20:08,530 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,547 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 00:20:08,547 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,562 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 00:20:08,563 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,588 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 00:20:08,589 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,606 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 00:20:08,607 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 00:20:08,626 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,643 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 00:20:08,643 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,661 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 00:20:08,662 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,679 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 00:20:08,680 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,695 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 00:20:08,696 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 00:20:08,713 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,729 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 00:20:08,730 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,744 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 00:20:08,745 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,761 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 28 [2021-06-06 00:20:08,761 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,776 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 00:20:08,777 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,785 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,792 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 00:20:08,794 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,809 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 00:20:08,810 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,825 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 00:20:08,826 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,841 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 00:20:08,842 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,857 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 00:20:08,858 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,887 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 00:20:08,888 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,901 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 00:20:08,902 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,916 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 56 treesize of output 25 [2021-06-06 00:20:08,917 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,932 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 00:20:08,933 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,947 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 00:20:08,948 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,962 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 54 treesize of output 25 [2021-06-06 00:20:08,962 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,976 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 00:20:08,977 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:08,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:08,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:08,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,008 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 00:20:09,009 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,023 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 56 treesize of output 22 [2021-06-06 00:20:09,024 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,037 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 00:20:09,038 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,050 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 00:20:09,051 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,065 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 00:20:09,066 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,078 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 00:20:09,079 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,091 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 00:20:09,092 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:09,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:20:09,098 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 00:20:09,099 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:09,189 INFO L628 ElimStorePlain]: treesize reduction 190, result has 28.3 percent of original size [2021-06-06 00:20:09,190 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 00:20:09,191 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-06 00:20:09,248 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 00:20:09,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226715630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:09,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:20:09,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-06 00:20:09,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153837782] [2021-06-06 00:20:09,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:20:09,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:20:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:20:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:20:09,249 INFO L87 Difference]: Start difference. First operand 43931 states and 169462 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 00:20:09,800 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2021-06-06 00:20:10,176 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 71 [2021-06-06 00:20:10,576 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 68 [2021-06-06 00:20:10,820 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-06-06 00:20:11,032 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2021-06-06 00:20:11,426 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 94 [2021-06-06 00:20:11,676 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2021-06-06 00:20:11,839 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-06 00:20:12,050 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 74 [2021-06-06 00:20:12,224 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 52 [2021-06-06 00:20:12,565 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 69 [2021-06-06 00:20:12,991 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-06-06 00:20:13,158 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2021-06-06 00:20:13,588 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 80 [2021-06-06 00:20:13,844 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 85 [2021-06-06 00:20:14,022 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2021-06-06 00:20:14,342 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 72 [2021-06-06 00:20:14,557 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 75 [2021-06-06 00:20:14,792 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 77 [2021-06-06 00:20:15,325 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2021-06-06 00:20:15,738 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-06-06 00:20:15,983 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2021-06-06 00:20:16,156 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-06 00:20:16,358 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:20:16,662 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 73 [2021-06-06 00:20:16,869 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2021-06-06 00:20:17,106 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 78 [2021-06-06 00:20:17,614 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2021-06-06 00:20:17,882 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-06-06 00:20:18,118 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-06-06 00:20:18,446 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-06-06 00:20:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:20:18,726 INFO L93 Difference]: Finished difference Result 55765 states and 208985 transitions. [2021-06-06 00:20:18,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:20:18,727 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 00:20:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:20:18,872 INFO L225 Difference]: With dead ends: 55765 [2021-06-06 00:20:18,872 INFO L226 Difference]: Without dead ends: 55735 [2021-06-06 00:20:18,872 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 10598.5ms TimeCoverageRelationStatistics Valid=534, Invalid=3126, Unknown=0, NotChecked=0, Total=3660 [2021-06-06 00:20:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55735 states. [2021-06-06 00:20:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55735 to 43970. [2021-06-06 00:20:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43970 states, 43969 states have (on average 3.8572630717096135) internal successors, (169600), 43969 states have internal predecessors, (169600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:20,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43970 states to 43970 states and 169600 transitions. [2021-06-06 00:20:20,166 INFO L78 Accepts]: Start accepts. Automaton has 43970 states and 169600 transitions. Word has length 30 [2021-06-06 00:20:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:20:20,166 INFO L482 AbstractCegarLoop]: Abstraction has 43970 states and 169600 transitions. [2021-06-06 00:20:20,167 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 00:20:20,167 INFO L276 IsEmpty]: Start isEmpty. Operand 43970 states and 169600 transitions. [2021-06-06 00:20:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:20:20,241 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:20:20,241 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 00:20:20,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4270 [2021-06-06 00:20:20,444 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:20:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:20:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash -547667522, now seen corresponding path program 176 times [2021-06-06 00:20:20,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:20:20,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308981574] [2021-06-06 00:20:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:20:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:20,672 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-06 00:20:20,858 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-06 00:20:21,040 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-06-06 00:20:21,319 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 00:20:21,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:20:21,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308981574] [2021-06-06 00:20:21,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308981574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:21,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004817363] [2021-06-06 00:20:21,320 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 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 00:20:21,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 00:20:21,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:20:21,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:20:21,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:21,701 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-06 00:20:21,917 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:20:22,470 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-06 00:20:22,976 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-06 00:20:23,561 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:20:23,561 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 40 treesize of output 54 [2021-06-06 00:20:23,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:24,011 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2021-06-06 00:20:24,011 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:24,070 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-06 00:20:24,070 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 00:20:24,072 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:24,487 WARN L205 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2021-06-06 00:20:24,487 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:24,575 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:20:24,576 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-06 00:20:24,587 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:25,421 WARN L205 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 337 [2021-06-06 00:20:25,422 INFO L628 ElimStorePlain]: treesize reduction 29, result has 96.7 percent of original size [2021-06-06 00:20:25,490 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:20:25,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:20:25,507 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:26,282 WARN L205 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 329 [2021-06-06 00:20:26,283 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.9 percent of original size [2021-06-06 00:20:26,329 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:26,329 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-06 00:20:26,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:26,736 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2021-06-06 00:20:26,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:26,800 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:20:26,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:20:26,805 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:27,195 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2021-06-06 00:20:27,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:27,260 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:20:27,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:20:27,264 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:27,658 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2021-06-06 00:20:27,658 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:27,726 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:20:27,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 00:20:27,741 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:28,608 WARN L205 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 305 [2021-06-06 00:20:28,609 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.8 percent of original size [2021-06-06 00:20:28,676 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-06 00:20:28,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 58 [2021-06-06 00:20:28,684 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:29,443 WARN L205 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 302 [2021-06-06 00:20:29,444 INFO L628 ElimStorePlain]: treesize reduction 24, result has 96.9 percent of original size [2021-06-06 00:20:29,488 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:29,489 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 40 treesize of output 62 [2021-06-06 00:20:29,499 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:30,273 WARN L205 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 301 [2021-06-06 00:20:30,274 INFO L628 ElimStorePlain]: treesize reduction 44, result has 94.5 percent of original size [2021-06-06 00:20:30,330 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:20:30,330 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 00:20:30,334 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:30,705 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-06 00:20:30,705 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:30,763 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:20:30,764 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 38 treesize of output 50 [2021-06-06 00:20:30,766 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:31,137 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-06 00:20:31,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:31,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:31,182 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-06 00:20:31,193 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:31,934 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 294 [2021-06-06 00:20:31,934 INFO L628 ElimStorePlain]: treesize reduction 25, result has 96.7 percent of original size [2021-06-06 00:20:31,994 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-06 00:20:31,994 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 40 treesize of output 54 [2021-06-06 00:20:31,997 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:32,368 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2021-06-06 00:20:32,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:32,424 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-06 00:20:32,424 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 00:20:32,426 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:32,798 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2021-06-06 00:20:32,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:32,848 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-06 00:20:32,849 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 26 treesize of output 44 [2021-06-06 00:20:32,853 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:33,227 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2021-06-06 00:20:33,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:20:33,340 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-06-06 00:20:33,341 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 48 variables, input treesize:877, output treesize:1290 [2021-06-06 00:20:33,805 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-06-06 00:20:33,943 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 00:20:33,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004817363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:33,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:20:33,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-06 00:20:33,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582951604] [2021-06-06 00:20:33,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:20:33,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:20:33,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:20:33,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:20:33,944 INFO L87 Difference]: Start difference. First operand 43970 states and 169600 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 00:20:34,478 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2021-06-06 00:20:34,779 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 90 [2021-06-06 00:20:35,302 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-06-06 00:20:35,833 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-06-06 00:20:36,214 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 69 [2021-06-06 00:20:36,628 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 90 [2021-06-06 00:20:36,919 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-06-06 00:20:37,500 WARN L205 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-06-06 00:20:37,824 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 69 [2021-06-06 00:20:38,187 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-06-06 00:20:38,347 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-06-06 00:20:39,087 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 164 [2021-06-06 00:20:39,988 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 93 [2021-06-06 00:20:40,287 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-06-06 00:20:40,466 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-06-06 00:20:40,677 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-06-06 00:20:41,729 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 151 [2021-06-06 00:20:41,916 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2021-06-06 00:20:42,226 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2021-06-06 00:20:43,428 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 185 DAG size of output: 156 [2021-06-06 00:20:43,697 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 64 [2021-06-06 00:20:45,026 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 235 DAG size of output: 160 [2021-06-06 00:20:46,081 WARN L205 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 147 [2021-06-06 00:20:46,910 WARN L205 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 127 [2021-06-06 00:20:47,245 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2021-06-06 00:20:48,596 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2021-06-06 00:20:49,390 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 119 [2021-06-06 00:20:49,987 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 117 [2021-06-06 00:20:51,126 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 209 DAG size of output: 176 [2021-06-06 00:20:51,365 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-06 00:20:51,592 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2021-06-06 00:20:52,275 WARN L205 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 115 [2021-06-06 00:20:52,607 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 75 [2021-06-06 00:20:52,904 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2021-06-06 00:20:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:20:53,089 INFO L93 Difference]: Finished difference Result 53172 states and 196612 transitions. [2021-06-06 00:20:53,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-06 00:20:53,089 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 00:20:53,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:20:53,230 INFO L225 Difference]: With dead ends: 53172 [2021-06-06 00:20:53,230 INFO L226 Difference]: Without dead ends: 53142 [2021-06-06 00:20:53,230 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 19938.4ms TimeCoverageRelationStatistics Valid=681, Invalid=3875, Unknown=0, NotChecked=0, Total=4556 [2021-06-06 00:20:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53142 states. [2021-06-06 00:20:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53142 to 43998. [2021-06-06 00:20:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43998 states, 43997 states have (on average 3.8568766052230834) internal successors, (169691), 43997 states have internal predecessors, (169691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:20:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43998 states to 43998 states and 169691 transitions. [2021-06-06 00:20:54,266 INFO L78 Accepts]: Start accepts. Automaton has 43998 states and 169691 transitions. Word has length 30 [2021-06-06 00:20:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:20:54,266 INFO L482 AbstractCegarLoop]: Abstraction has 43998 states and 169691 transitions. [2021-06-06 00:20:54,266 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 00:20:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 43998 states and 169691 transitions. [2021-06-06 00:20:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:20:54,337 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:20:54,337 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 00:20:54,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4501,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:20:54,545 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:20:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:20:54,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1002714042, now seen corresponding path program 177 times [2021-06-06 00:20:54,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:20:54,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566434427] [2021-06-06 00:20:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:20:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:20:54,939 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-06 00:20:55,132 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-06 00:20:55,304 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-06 00:20:55,503 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 00:20:55,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:20:55,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566434427] [2021-06-06 00:20:55,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566434427] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:20:55,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797456927] [2021-06-06 00:20:55,504 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 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 00:20:55,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-06 00:20:55,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:20:55,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-06 00:20:55,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:20:55,881 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-06 00:20:56,103 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-06 00:20:56,431 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-06 00:20:56,901 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-06 00:20:57,079 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:20:57,532 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-06 00:20:58,057 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 191 [2021-06-06 00:20:58,499 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2021-06-06 00:20:58,810 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_635, v_prenex_636, v_prenex_637, v_prenex_642], 9=[A, v_prenex_638, v_prenex_639, v_prenex_640, v_prenex_641, v_prenex_634]} [2021-06-06 00:20:58,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:58,890 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-06 00:20:58,890 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 42 treesize of output 64 [2021-06-06 00:20:58,898 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:20:58,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:20:58,958 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-06 00:20:58,959 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 61 [2021-06-06 00:20:58,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:00,503 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 255 DAG size of output: 243 [2021-06-06 00:21:00,504 INFO L628 ElimStorePlain]: treesize reduction 59, result has 95.2 percent of original size [2021-06-06 00:21:00,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:00,572 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:21:00,572 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 49 [2021-06-06 00:21:00,574 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:00,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:00,636 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:00,636 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 50 [2021-06-06 00:21:00,641 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:01,479 WARN L205 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-06-06 00:21:01,479 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:01,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:01,562 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:01,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 50 [2021-06-06 00:21:01,567 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:01,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:01,613 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:01,614 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2021-06-06 00:21:01,643 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:02,350 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-06-06 00:21:02,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:02,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:02,415 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:21:02,415 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 49 [2021-06-06 00:21:02,419 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:02,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:02,480 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:02,481 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 42 treesize of output 56 [2021-06-06 00:21:02,482 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:03,190 WARN L205 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2021-06-06 00:21:03,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:03,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:03,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:03,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:03,262 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:21:03,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 52 [2021-06-06 00:21:03,263 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:03,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:03,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:03,327 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:03,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 56 [2021-06-06 00:21:03,331 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:04,726 WARN L205 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 237 DAG size of output: 236 [2021-06-06 00:21:04,727 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.0 percent of original size [2021-06-06 00:21:04,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:04,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:04,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:04,801 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:04,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 53 [2021-06-06 00:21:04,807 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:04,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:04,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:04,869 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-06 00:21:04,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 49 [2021-06-06 00:21:04,871 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:06,251 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 235 DAG size of output: 234 [2021-06-06 00:21:06,252 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.0 percent of original size [2021-06-06 00:21:06,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:06,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:06,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:06,317 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:06,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 68 [2021-06-06 00:21:06,333 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:06,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:06,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:06,395 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:06,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-06 00:21:06,402 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:07,739 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2021-06-06 00:21:07,740 INFO L628 ElimStorePlain]: treesize reduction 108, result has 90.6 percent of original size [2021-06-06 00:21:07,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:07,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:07,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:07,812 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:07,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-06 00:21:07,814 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:07,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:07,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:07,875 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:07,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 56 [2021-06-06 00:21:07,879 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:09,144 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2021-06-06 00:21:09,144 INFO L628 ElimStorePlain]: treesize reduction 10, result has 99.0 percent of original size [2021-06-06 00:21:09,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:09,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:09,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:09,208 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:09,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-06 00:21:09,212 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:09,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:09,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:09,260 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:09,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 68 [2021-06-06 00:21:09,274 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:10,453 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 225 DAG size of output: 212 [2021-06-06 00:21:10,454 INFO L628 ElimStorePlain]: treesize reduction 65, result has 93.7 percent of original size [2021-06-06 00:21:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:10,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:10,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:10,510 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-06 00:21:10,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 53 [2021-06-06 00:21:10,516 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:10,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:10,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:10,556 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:21:10,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 65 [2021-06-06 00:21:10,578 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:11,680 WARN L205 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 214 DAG size of output: 201 [2021-06-06 00:21:11,681 INFO L628 ElimStorePlain]: treesize reduction 67, result has 93.2 percent of original size [2021-06-06 00:21:11,758 INFO L550 ElimStorePlain]: Start of recursive call 1: 20 dim-0 vars, 10 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-06 00:21:11,758 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 30 variables, input treesize:1225, output treesize:1279 [2021-06-06 00:21:12,172 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2021-06-06 00:21:12,286 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 00:21:12,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797456927] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:21:12,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:21:12,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-06 00:21:12,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024528920] [2021-06-06 00:21:12,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-06 00:21:12,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:21:12,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-06 00:21:12,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-06-06 00:21:12,286 INFO L87 Difference]: Start difference. First operand 43998 states and 169691 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 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 00:21:12,942 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 39 [2021-06-06 00:21:13,553 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2021-06-06 00:21:14,145 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-06-06 00:21:14,318 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-06 00:21:15,303 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-06-06 00:21:16,060 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 84 [2021-06-06 00:21:16,358 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-06 00:21:17,203 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2021-06-06 00:21:18,070 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 140 [2021-06-06 00:21:18,276 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2021-06-06 00:21:18,430 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 58 [2021-06-06 00:21:18,604 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-06-06 00:21:19,810 WARN L205 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 113 [2021-06-06 00:21:20,024 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-06 00:21:20,908 WARN L205 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 99 [2021-06-06 00:21:21,277 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2021-06-06 00:21:22,302 WARN L205 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 140 [2021-06-06 00:21:23,369 WARN L205 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 161 [2021-06-06 00:21:23,671 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-06-06 00:21:24,526 WARN L205 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 96 [2021-06-06 00:21:25,444 WARN L205 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 144 [2021-06-06 00:21:26,129 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 97 [2021-06-06 00:21:26,613 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2021-06-06 00:21:26,927 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-06 00:21:28,093 WARN L205 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 145 [2021-06-06 00:21:29,120 WARN L205 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 144 [2021-06-06 00:21:29,748 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 129 [2021-06-06 00:21:30,050 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-06-06 00:21:30,558 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 118 [2021-06-06 00:21:31,554 WARN L205 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2021-06-06 00:21:32,422 WARN L205 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2021-06-06 00:21:33,783 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 169 DAG size of output: 157 [2021-06-06 00:21:34,399 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 220 [2021-06-06 00:21:35,989 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2021-06-06 00:21:36,612 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 201 [2021-06-06 00:21:37,346 WARN L205 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 220 [2021-06-06 00:21:37,747 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-06-06 00:21:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:21:37,992 INFO L93 Difference]: Finished difference Result 69247 states and 257198 transitions. [2021-06-06 00:21:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-06 00:21:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 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 00:21:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:21:38,188 INFO L225 Difference]: With dead ends: 69247 [2021-06-06 00:21:38,188 INFO L226 Difference]: Without dead ends: 69217 [2021-06-06 00:21:38,189 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 26031.8ms TimeCoverageRelationStatistics Valid=679, Invalid=5483, Unknown=0, NotChecked=0, Total=6162 [2021-06-06 00:21:38,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69217 states. [2021-06-06 00:21:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69217 to 44010. [2021-06-06 00:21:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44010 states, 44009 states have (on average 3.856961076143516) internal successors, (169741), 44009 states have internal predecessors, (169741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:21:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44010 states to 44010 states and 169741 transitions. [2021-06-06 00:21:39,382 INFO L78 Accepts]: Start accepts. Automaton has 44010 states and 169741 transitions. Word has length 30 [2021-06-06 00:21:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:21:39,382 INFO L482 AbstractCegarLoop]: Abstraction has 44010 states and 169741 transitions. [2021-06-06 00:21:39,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 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 00:21:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 44010 states and 169741 transitions. [2021-06-06 00:21:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:21:39,456 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:21:39,456 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 00:21:39,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4638 [2021-06-06 00:21:39,657 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:21:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:21:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash 26395198, now seen corresponding path program 178 times [2021-06-06 00:21:39,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:21:39,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694668287] [2021-06-06 00:21:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:21:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:21:39,902 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 144 [2021-06-06 00:21:40,222 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 39 [2021-06-06 00:21:40,486 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 147 [2021-06-06 00:21:40,764 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 44 [2021-06-06 00:21:41,006 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 184 [2021-06-06 00:21:41,499 WARN L205 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 93 [2021-06-06 00:21:41,701 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 177 [2021-06-06 00:21:42,143 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 86 [2021-06-06 00:21:42,449 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 46 [2021-06-06 00:21:42,654 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2021-06-06 00:21:42,848 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2021-06-06 00:21:42,935 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 00:21:42,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:21:42,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694668287] [2021-06-06 00:21:42,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694668287] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:21:42,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167265803] [2021-06-06 00:21:42,936 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 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 00:21:43,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 00:21:43,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:21:43,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:21:43,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:21:44,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,257 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 00:21:44,258 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,273 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 00:21:44,275 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,288 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 00:21:44,289 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,316 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 00:21:44,317 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,333 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 43 treesize of output 22 [2021-06-06 00:21:44,334 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,348 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 00:21:44,348 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,364 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 00:21:44,364 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,380 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 00:21:44,381 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,397 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 28 [2021-06-06 00:21:44,398 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,413 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 00:21:44,414 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,429 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 00:21:44,430 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,445 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 00:21:44,446 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,462 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 54 treesize of output 25 [2021-06-06 00:21:44,463 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,478 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 00:21:44,478 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,494 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 00:21:44,495 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,510 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 56 treesize of output 25 [2021-06-06 00:21:44,511 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,527 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 54 treesize of output 22 [2021-06-06 00:21:44,528 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,544 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 00:21:44,545 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,560 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 00:21:44,560 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,575 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 54 treesize of output 28 [2021-06-06 00:21:44,576 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,591 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 00:21:44,592 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,607 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 00:21:44,608 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,623 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 00:21:44,624 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,639 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 00:21:44,640 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,655 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 43 treesize of output 22 [2021-06-06 00:21:44,655 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,669 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 00:21:44,670 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,685 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 28 [2021-06-06 00:21:44,685 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,700 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 00:21:44,702 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,726 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 00:21:44,727 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,743 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 00:21:44,744 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,761 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 00:21:44,763 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,773 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,779 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 00:21:44,780 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,794 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 56 treesize of output 22 [2021-06-06 00:21:44,795 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,810 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 00:21:44,811 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,826 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 00:21:44,827 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,842 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 00:21:44,843 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,857 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 00:21:44,858 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,873 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 45 treesize of output 25 [2021-06-06 00:21:44,873 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 00:21:44,890 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,904 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 00:21:44,905 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,920 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 45 treesize of output 25 [2021-06-06 00:21:44,920 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,935 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 00:21:44,936 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,952 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 00:21:44,953 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,967 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 00:21:44,968 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,983 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 53 treesize of output 25 [2021-06-06 00:21:44,984 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:44,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:44,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:44,998 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 00:21:44,999 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,014 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 00:21:45,015 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,029 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 00:21:45,029 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,043 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 00:21:45,044 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,057 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 00:21:45,058 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,072 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 00:21:45,073 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,087 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 44 treesize of output 16 [2021-06-06 00:21:45,088 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,102 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 00:21:45,103 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,116 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 00:21:45,116 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,130 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 00:21:45,131 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,145 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 52 treesize of output 28 [2021-06-06 00:21:45,161 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,176 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 00:21:45,177 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,191 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 00:21:45,192 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,207 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 00:21:45,208 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,221 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 00:21:45,222 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,235 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 00:21:45,236 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,247 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 00:21:45,248 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:45,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:45,255 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 00:21:45,255 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:21:45,342 INFO L628 ElimStorePlain]: treesize reduction 187, result has 28.6 percent of original size [2021-06-06 00:21:45,344 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 00:21:45,344 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-06 00:21:45,410 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 00:21:45,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167265803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:21:45,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:21:45,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:21:45,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772623388] [2021-06-06 00:21:45,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:21:45,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:21:45,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:21:45,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:21:45,411 INFO L87 Difference]: Start difference. First operand 44010 states and 169741 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 00:21:45,588 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2021-06-06 00:21:45,849 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 45 [2021-06-06 00:21:46,285 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 45 [2021-06-06 00:21:46,436 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 41 [2021-06-06 00:21:47,120 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2021-06-06 00:21:47,674 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 81 [2021-06-06 00:21:47,930 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2021-06-06 00:21:48,145 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-06 00:21:48,299 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:21:48,503 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-06 00:21:48,964 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 110 [2021-06-06 00:21:49,123 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 45 [2021-06-06 00:21:49,566 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 83 [2021-06-06 00:21:50,194 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 94 [2021-06-06 00:21:50,690 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 70 [2021-06-06 00:21:51,267 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 113 [2021-06-06 00:21:51,581 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2021-06-06 00:21:52,210 WARN L205 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 97 [2021-06-06 00:21:52,455 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-06 00:21:52,764 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2021-06-06 00:21:52,990 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-06 00:21:53,173 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-06 00:21:53,524 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-06-06 00:21:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:21:54,180 INFO L93 Difference]: Finished difference Result 72447 states and 268328 transitions. [2021-06-06 00:21:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-06 00:21:54,181 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 00:21:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:21:54,365 INFO L225 Difference]: With dead ends: 72447 [2021-06-06 00:21:54,366 INFO L226 Difference]: Without dead ends: 72417 [2021-06-06 00:21:54,366 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 9836.0ms TimeCoverageRelationStatistics Valid=411, Invalid=3129, Unknown=0, NotChecked=0, Total=3540 [2021-06-06 00:21:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72417 states. [2021-06-06 00:21:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72417 to 44039. [2021-06-06 00:21:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44039 states, 44038 states have (on average 3.856623824878514) internal successors, (169838), 44038 states have internal predecessors, (169838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:21:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44039 states to 44039 states and 169838 transitions. [2021-06-06 00:21:55,661 INFO L78 Accepts]: Start accepts. Automaton has 44039 states and 169838 transitions. Word has length 30 [2021-06-06 00:21:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:21:55,661 INFO L482 AbstractCegarLoop]: Abstraction has 44039 states and 169838 transitions. [2021-06-06 00:21:55,661 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 00:21:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 44039 states and 169838 transitions. [2021-06-06 00:21:55,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:21:55,733 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:21:55,733 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 00:21:55,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4826,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:21:55,934 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:21:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:21:55,934 INFO L82 PathProgramCache]: Analyzing trace with hash 2016530042, now seen corresponding path program 179 times [2021-06-06 00:21:55,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:21:55,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43247497] [2021-06-06 00:21:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:21:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:21:56,257 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-06 00:21:56,470 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-06-06 00:21:56,659 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-06-06 00:21:56,804 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2021-06-06 00:21:57,046 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 00:21:57,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:21:57,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43247497] [2021-06-06 00:21:57,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43247497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:21:57,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138743987] [2021-06-06 00:21:57,047 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 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 00:21:57,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-06 00:21:57,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:21:57,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-06 00:21:57,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:21:57,433 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-06 00:21:57,655 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-06 00:21:58,177 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-06 00:21:59,026 WARN L205 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 168 [2021-06-06 00:21:59,804 WARN L205 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 116 [2021-06-06 00:21:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:59,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:21:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:21:59,895 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-06 00:21:59,896 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:00,323 WARN L205 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 155 [2021-06-06 00:22:00,324 INFO L628 ElimStorePlain]: treesize reduction 91, result has 81.8 percent of original size [2021-06-06 00:22:00,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:00,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,334 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 35 treesize of output 19 [2021-06-06 00:22:00,336 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:00,640 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-06 00:22:00,640 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:00,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,649 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 00:22:00,651 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:00,832 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-06 00:22:00,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:00,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:00,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:00,845 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 33 treesize of output 19 [2021-06-06 00:22:00,846 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:00,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:00,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:00,854 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 00:22:00,855 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:00,999 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-06 00:22:01,000 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:01,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,009 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 00:22:01,010 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:01,147 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-06 00:22:01,148 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:01,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 00:22:01,157 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:01,288 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:22:01,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:01,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:01,296 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 40 treesize of output 22 [2021-06-06 00:22:01,297 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:01,414 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-06 00:22:01,414 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:01,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:01,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,422 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-06 00:22:01,423 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:01,530 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-06 00:22:01,530 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:01,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:01,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-06 00:22:01,538 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:01,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-06 00:22:01,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 9 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-06 00:22:01,641 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 27 variables, input treesize:525, output treesize:100 [2021-06-06 00:22:01,736 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 00:22:01,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138743987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:22:01,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:22:01,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-06 00:22:01,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507043079] [2021-06-06 00:22:01,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-06 00:22:01,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:22:01,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-06 00:22:01,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-06 00:22:01,737 INFO L87 Difference]: Start difference. First operand 44039 states and 169838 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 00:22:02,111 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 52 [2021-06-06 00:22:02,466 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2021-06-06 00:22:02,604 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-06-06 00:22:02,874 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-06 00:22:03,145 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2021-06-06 00:22:03,456 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 63 [2021-06-06 00:22:03,773 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2021-06-06 00:22:04,123 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2021-06-06 00:22:04,298 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-06 00:22:04,554 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-06-06 00:22:05,196 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2021-06-06 00:22:05,774 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 89 [2021-06-06 00:22:06,098 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-06-06 00:22:06,322 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-06 00:22:07,721 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 163 DAG size of output: 142 [2021-06-06 00:22:09,019 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 175 DAG size of output: 141 [2021-06-06 00:22:09,198 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-06 00:22:09,955 WARN L205 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 95 [2021-06-06 00:22:11,961 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 179 DAG size of output: 125 [2021-06-06 00:22:13,724 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 167 DAG size of output: 141 [2021-06-06 00:22:14,079 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-06-06 00:22:14,330 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 62 [2021-06-06 00:22:14,746 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-06 00:22:15,696 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 121 [2021-06-06 00:22:16,893 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 171 DAG size of output: 121 [2021-06-06 00:22:17,131 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-06-06 00:22:17,478 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-06-06 00:22:17,807 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2021-06-06 00:22:18,730 WARN L205 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 145 [2021-06-06 00:22:19,040 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 51 [2021-06-06 00:22:19,290 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-06-06 00:22:19,566 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2021-06-06 00:22:19,856 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2021-06-06 00:22:20,228 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-06-06 00:22:20,417 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 45 [2021-06-06 00:22:20,694 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2021-06-06 00:22:20,866 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 45 [2021-06-06 00:22:21,043 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2021-06-06 00:22:21,230 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-06-06 00:22:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-06 00:22:21,417 INFO L93 Difference]: Finished difference Result 54532 states and 200549 transitions. [2021-06-06 00:22:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-06 00:22:21,417 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 00:22:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-06 00:22:21,553 INFO L225 Difference]: With dead ends: 54532 [2021-06-06 00:22:21,554 INFO L226 Difference]: Without dead ends: 54358 [2021-06-06 00:22:21,554 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 21630.0ms TimeCoverageRelationStatistics Valid=787, Invalid=3635, Unknown=0, NotChecked=0, Total=4422 [2021-06-06 00:22:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54358 states. [2021-06-06 00:22:22,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54358 to 44083. [2021-06-06 00:22:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44083 states, 44082 states have (on average 3.8560410144730275) internal successors, (169982), 44082 states have internal predecessors, (169982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-06 00:22:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44083 states to 44083 states and 169982 transitions. [2021-06-06 00:22:22,609 INFO L78 Accepts]: Start accepts. Automaton has 44083 states and 169982 transitions. Word has length 30 [2021-06-06 00:22:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-06 00:22:22,609 INFO L482 AbstractCegarLoop]: Abstraction has 44083 states and 169982 transitions. [2021-06-06 00:22:22,609 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 00:22:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 44083 states and 169982 transitions. [2021-06-06 00:22:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-06 00:22:22,682 INFO L546 BasicCegarLoop]: Found error trace [2021-06-06 00:22:22,682 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 00:22:22,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5043 [2021-06-06 00:22:22,882 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 00:22:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 00:22:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash -728055690, now seen corresponding path program 180 times [2021-06-06 00:22:22,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 00:22:22,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087945852] [2021-06-06 00:22:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 00:22:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 00:22:23,059 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2021-06-06 00:22:23,427 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-06 00:22:23,591 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-06-06 00:22:23,769 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 00:22:23,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 00:22:23,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087945852] [2021-06-06 00:22:23,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087945852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:22:23,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983596182] [2021-06-06 00:22:23,769 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 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:22:23,796 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-06 00:22:23,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 00:22:23,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-06 00:22:23,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 00:22:25,194 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-06 00:22:25,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,495 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 53 treesize of output 22 [2021-06-06 00:22:25,496 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,509 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 00:22:25,509 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,522 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 00:22:25,523 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,536 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 00:22:25,537 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,550 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 00:22:25,551 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,565 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 00:22:25,566 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,581 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 00:22:25,582 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,595 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 00:22:25,596 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,611 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 00:22:25,611 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,624 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 00:22:25,625 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,639 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 00:22:25,640 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,655 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 00:22:25,656 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,670 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 00:22:25,671 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,685 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 00:22:25,686 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,701 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 00:22:25,702 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,716 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 00:22:25,717 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,732 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 00:22:25,733 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,747 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 42 treesize of output 22 [2021-06-06 00:22:25,748 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,762 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 00:22:25,763 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,777 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 00:22:25,778 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,792 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 00:22:25,793 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,808 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 00:22:25,809 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,824 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 54 treesize of output 22 [2021-06-06 00:22:25,824 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,839 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 00:22:25,840 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,854 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 00:22:25,855 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,870 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 00:22:25,870 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,885 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 00:22:25,886 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,901 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 00:22:25,902 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,915 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 00:22:25,916 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,931 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 56 treesize of output 22 [2021-06-06 00:22:25,931 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,945 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 00:22:25,946 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,960 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 00:22:25,961 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,976 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 00:22:25,976 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:25,991 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 45 treesize of output 25 [2021-06-06 00:22:25,992 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:25,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:25,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,006 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 00:22:26,007 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,021 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 52 treesize of output 28 [2021-06-06 00:22:26,022 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,037 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 00:22:26,038 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,052 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 43 treesize of output 22 [2021-06-06 00:22:26,053 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,069 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 28 [2021-06-06 00:22:26,069 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,084 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 00:22:26,085 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,101 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 43 treesize of output 22 [2021-06-06 00:22:26,101 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 00:22:26,116 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,132 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 00:22:26,133 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,148 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 00:22:26,149 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,163 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 00:22:26,164 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,179 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 44 treesize of output 16 [2021-06-06 00:22:26,180 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,196 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 00:22:26,197 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,211 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 00:22:26,212 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,227 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 00:22:26,228 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,243 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 00:22:26,244 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,258 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 00:22:26,259 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,274 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 00:22:26,275 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,290 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 45 treesize of output 25 [2021-06-06 00:22:26,291 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,306 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 00:22:26,307 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,321 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 00:22:26,322 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,336 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 00:22:26,337 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,351 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 00:22:26,352 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,365 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 00:22:26,366 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,380 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 54 treesize of output 25 [2021-06-06 00:22:26,380 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,394 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 56 treesize of output 25 [2021-06-06 00:22:26,395 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,409 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 28 [2021-06-06 00:22:26,409 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,422 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 00:22:26,422 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-06 00:22:26,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-06 00:22:26,429 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 54 treesize of output 28 [2021-06-06 00:22:26,430 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-06 00:22:26,522 INFO L628 ElimStorePlain]: treesize reduction 187, result has 28.6 percent of original size [2021-06-06 00:22:26,523 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 00:22:26,523 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-06 00:22:26,582 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 00:22:26,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983596182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 00:22:26,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 00:22:26,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-06 00:22:26,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563227761] [2021-06-06 00:22:26,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-06 00:22:26,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 00:22:26,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-06 00:22:26,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-06-06 00:22:26,583 INFO L87 Difference]: Start difference. First operand 44083 states and 169982 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 00:22:27,868 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 82 [2021-06-06 00:22:28,405 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2021-06-06 00:22:28,661 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2021-06-06 00:22:28,983 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-06-06 00:22:29,209 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2021-06-06 00:22:30,086 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 98 [2021-06-06 00:22:30,251 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-06 00:22:30,497 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-06-06 00:22:30,689 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2021-06-06 00:22:30,981 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2021-06-06 00:22:31,419 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 99 [2021-06-06 00:22:31,658 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-06-06 00:22:32,003 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 85 [2021-06-06 00:22:32,260 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 86 [2021-06-06 00:22:32,470 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-06 00:22:32,702 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2021-06-06 00:22:33,153 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2021-06-06 00:22:33,346 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-06 00:22:33,630 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-06-06 00:22:34,087 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2021-06-06 00:22:34,361 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2021-06-06 00:22:34,520 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2021-06-06 00:22:34,737 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2021-06-06 00:22:35,020 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 Received shutdown request... [2021-06-06 00:22:35,274 WARN L222 SmtUtils]: Removed 6 from assertion stack [2021-06-06 00:22:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-06 00:22:35,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5064,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 00:22:35,474 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-06 00:22:35,476 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 00:22:35,477 WARN L196 ceAbstractionStarter]: Timeout [2021-06-06 00:22:35,478 INFO L202 PluginConnector]: Adding new model min-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 12:22:35 BasicIcfg [2021-06-06 00:22:35,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 00:22:35,478 INFO L168 Benchmark]: Toolchain (without parser) took 803754.81 ms. Allocated memory was 369.1 MB in the beginning and 15.6 GB in the end (delta: 15.3 GB). Free memory was 348.5 MB in the beginning and 12.2 GB in the end (delta: -11.8 GB). Peak memory consumption was 3.4 GB. Max. memory is 16.0 GB. [2021-06-06 00:22:35,478 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 369.1 MB. Free memory was 349.7 MB in the beginning and 349.6 MB in the end (delta: 65.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 00:22:35,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.57 ms. Allocated memory is still 369.1 MB. Free memory was 348.4 MB in the beginning and 347.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 00:22:35,478 INFO L168 Benchmark]: Boogie Preprocessor took 12.61 ms. Allocated memory is still 369.1 MB. Free memory was 347.0 MB in the beginning and 346.0 MB in the end (delta: 945.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 00:22:35,478 INFO L168 Benchmark]: RCFGBuilder took 268.91 ms. Allocated memory is still 369.1 MB. Free memory was 345.9 MB in the beginning and 333.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-06 00:22:35,478 INFO L168 Benchmark]: TraceAbstraction took 803449.68 ms. Allocated memory was 369.1 MB in the beginning and 15.6 GB in the end (delta: 15.3 GB). Free memory was 332.7 MB in the beginning and 12.2 GB in the end (delta: -11.9 GB). Peak memory consumption was 3.4 GB. Max. memory is 16.0 GB. [2021-06-06 00:22:35,479 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 369.1 MB. Free memory was 349.7 MB in the beginning and 349.6 MB in the end (delta: 65.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.57 ms. Allocated memory is still 369.1 MB. Free memory was 348.4 MB in the beginning and 347.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.61 ms. Allocated memory is still 369.1 MB. Free memory was 347.0 MB in the beginning and 346.0 MB in the end (delta: 945.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 268.91 ms. Allocated memory is still 369.1 MB. Free memory was 345.9 MB in the beginning and 333.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 803449.68 ms. Allocated memory was 369.1 MB in the beginning and 15.6 GB in the end (delta: 15.3 GB). Free memory was 332.7 MB in the beginning and 12.2 GB in the end (delta: -11.9 GB). Peak memory consumption was 3.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (44083states) and FLOYD_HOARE automaton (currently 51 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 84 for 186ms.. - 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: 803338.7ms, OverallIterations: 264, TraceHistogramMax: 3, EmptinessCheckTime: 5968.3ms, AutomataDifference: 442892.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11904 SDtfs, 75266 SDslu, 93126 SDs, 0 SdLazy, 148828 SolverSat, 13556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79722.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17078 GetRequests, 5552 SyntacticMatches, 267 SemanticMatches, 11258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192086 ImplicationChecksByTransitivity, 400268.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48513occurred in iteration=252, InterpolantAutomatonStates: 9958, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 86395.0ms AutomataMinimizationTime, 263 MinimizatonAttempts, 1353573 StatesRemovedByMinimization, 263 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 758.8ms SsaConstructionTime, 2640.7ms SatisfiabilityAnalysisTime, 206244.6ms InterpolantComputationTime, 14054 NumberOfCodeBlocks, 14054 NumberOfCodeBlocksAsserted, 916 NumberOfCheckSat, 13529 ConstructedInterpolants, 177 QuantifiedInterpolants, 289353 SizeOfPredicates, 1178 NumberOfNonLiveVariables, 18278 ConjunctsInSsa, 4011 ConjunctsInUnsatCore, 525 InterpolantComputations, 3 PerfectInterpolantSequences, 1023/4502 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