/usr/bin/java -Xmx8000000000 -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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:48:56,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:48:56,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:48:56,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:48:56,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:48:56,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:48:56,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:48:56,400 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-Delay.epf [2021-08-06 19:48:56,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:48:56,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:48:56,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:48:56,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:48:56,438 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:48:56,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:48:56,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:48:56,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:48:56,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:48:56,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:48:56,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:48:56,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:48:56,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:48:56,440 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:48:56,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:48:56,440 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:48:56,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:48:56,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:48:56,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:48:56,441 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:48:56,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:48:56,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:48:56,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:48:56,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:48:56,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:48:56,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:48:56,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:48:56,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:48:56,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:48:56,442 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:48:56,442 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:48:56,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:48:56,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:48:56,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:48:56,781 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 19:48:56,782 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 19:48:56,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl [2021-08-06 19:48:56,783 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-08-06 19:48:56,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:48:56,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 19:48:56,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:48:56,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:48:56,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:48:56,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:48:56,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:48:56,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:48:56,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:48:56,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:48:56,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:48:56,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:48:56,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:48:56,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/1) ... [2021-08-06 19:48:56,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:48:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:48:56,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-06 19:48:56,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-06 19:48:56,931 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-06 19:48:56,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-06 19:48:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-06 19:48:56,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-06 19:48:56,932 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-06 19:48:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-06 19:48:56,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 19:48:56,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:48:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:48:56,933 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-06 19:48:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-06 19:48:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-06 19:48:56,933 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-06 19:48:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-06 19:48:56,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-06 19:48:56,934 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:48:57,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:48:57,298 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-06 19:48:57,300 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:48:57 BoogieIcfgContainer [2021-08-06 19:48:57,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:48:57,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:48:57,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:48:57,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:48:57,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:48:56" (1/2) ... [2021-08-06 19:48:57,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dc7e0d and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:48:57, skipping insertion in model container [2021-08-06 19:48:57,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:48:57" (2/2) ... [2021-08-06 19:48:57,306 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-08-06 19:48:57,310 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:48:57,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:48:57,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:48:57,310 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:48:57,420 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 19:48:57,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:48:57,476 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 19:48:57,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-06 19:49:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 93964 states, 84120 states have (on average 2.9741203043271516) internal successors, (250183), 93963 states have internal predecessors, (250183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:49:05,921 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:49:05,922 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:49:05,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:49:05,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:49:05,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1562351818, now seen corresponding path program 1 times [2021-08-06 19:49:05,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:49:05,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771096404] [2021-08-06 19:49:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:49:05,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:49:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:49:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:49:06,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:49:06,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771096404] [2021-08-06 19:49:06,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771096404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:49:06,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:49:06,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 19:49:06,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962932643] [2021-08-06 19:49:06,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:49:06,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:49:06,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:49:06,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:49:06,263 INFO L87 Difference]: Start difference. First operand has 93964 states, 84120 states have (on average 2.9741203043271516) internal successors, (250183), 93963 states have internal predecessors, (250183), 0 states have call successors, (0), 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 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:49:07,593 INFO L93 Difference]: Finished difference Result 93964 states and 246724 transitions. [2021-08-06 19:49:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:49:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:49:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:49:08,339 INFO L225 Difference]: With dead ends: 93964 [2021-08-06 19:49:08,339 INFO L226 Difference]: Without dead ends: 76287 [2021-08-06 19:49:08,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:49:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2021-08-06 19:49:11,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 76287. [2021-08-06 19:49:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76287 states, 76286 states have (on average 2.9089741236924205) internal successors, (221914), 76286 states have internal predecessors, (221914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76287 states to 76287 states and 221914 transitions. [2021-08-06 19:49:11,623 INFO L78 Accepts]: Start accepts. Automaton has 76287 states and 221914 transitions. Word has length 75 [2021-08-06 19:49:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:49:11,624 INFO L470 AbstractCegarLoop]: Abstraction has 76287 states and 221914 transitions. [2021-08-06 19:49:11,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:11,625 INFO L276 IsEmpty]: Start isEmpty. Operand 76287 states and 221914 transitions. [2021-08-06 19:49:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:49:12,157 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:49:12,158 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:49:12,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:49:12,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:49:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:49:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1499674988, now seen corresponding path program 2 times [2021-08-06 19:49:12,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:49:12,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689903005] [2021-08-06 19:49:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:49:12,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:49:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:49:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:49:12,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:49:12,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689903005] [2021-08-06 19:49:12,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689903005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:49:12,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:49:12,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-06 19:49:12,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836643723] [2021-08-06 19:49:12,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-06 19:49:12,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:49:12,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-06 19:49:12,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:49:12,245 INFO L87 Difference]: Start difference. First operand 76287 states and 221914 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:49:12,698 INFO L93 Difference]: Finished difference Result 76287 states and 218457 transitions. [2021-08-06 19:49:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-06 19:49:12,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:49:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:49:13,249 INFO L225 Difference]: With dead ends: 76287 [2021-08-06 19:49:13,250 INFO L226 Difference]: Without dead ends: 76287 [2021-08-06 19:49:13,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-06 19:49:13,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2021-08-06 19:49:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 76287. [2021-08-06 19:49:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76287 states, 76286 states have (on average 2.863657814015678) internal successors, (218457), 76286 states have internal predecessors, (218457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76287 states to 76287 states and 218457 transitions. [2021-08-06 19:49:15,606 INFO L78 Accepts]: Start accepts. Automaton has 76287 states and 218457 transitions. Word has length 75 [2021-08-06 19:49:15,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:49:15,607 INFO L470 AbstractCegarLoop]: Abstraction has 76287 states and 218457 transitions. [2021-08-06 19:49:15,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:15,607 INFO L276 IsEmpty]: Start isEmpty. Operand 76287 states and 218457 transitions. [2021-08-06 19:49:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:49:15,771 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:49:15,772 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:49:15,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:49:15,772 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:49:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:49:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash -260385842, now seen corresponding path program 3 times [2021-08-06 19:49:15,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:49:15,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975240347] [2021-08-06 19:49:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:49:15,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:49:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:49:16,021 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 42.9 percent of original size [2021-08-06 19:49:16,022 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 42.9 percent of original size [2021-08-06 19:49:16,035 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 20, result has 62.3 percent of original size [2021-08-06 19:49:16,046 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 20, result has 62.3 percent of original size [2021-08-06 19:49:16,088 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 78.9 percent of original size [2021-08-06 19:49:16,108 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 78.9 percent of original size [2021-08-06 19:49:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:49:16,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:49:16,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975240347] [2021-08-06 19:49:16,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975240347] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:49:16,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:49:16,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:49:16,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259857440] [2021-08-06 19:49:16,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:49:16,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:49:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:49:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:49:16,217 INFO L87 Difference]: Start difference. First operand 76287 states and 218457 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:49:17,924 INFO L93 Difference]: Finished difference Result 150063 states and 440218 transitions. [2021-08-06 19:49:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:49:17,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:49:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:49:18,889 INFO L225 Difference]: With dead ends: 150063 [2021-08-06 19:49:18,890 INFO L226 Difference]: Without dead ends: 150063 [2021-08-06 19:49:18,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:49:19,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150063 states. [2021-08-06 19:49:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150063 to 93361. [2021-08-06 19:49:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93361 states, 93360 states have (on average 2.918444730077121) internal successors, (272466), 93360 states have internal predecessors, (272466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93361 states to 93361 states and 272466 transitions. [2021-08-06 19:49:23,017 INFO L78 Accepts]: Start accepts. Automaton has 93361 states and 272466 transitions. Word has length 75 [2021-08-06 19:49:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:49:23,017 INFO L470 AbstractCegarLoop]: Abstraction has 93361 states and 272466 transitions. [2021-08-06 19:49:23,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 93361 states and 272466 transitions. [2021-08-06 19:49:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:49:23,199 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:49:23,199 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:49:23,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:49:23,200 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:49:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:49:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1331934512, now seen corresponding path program 4 times [2021-08-06 19:49:23,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:49:23,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772728692] [2021-08-06 19:49:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:49:23,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:49:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:49:23,321 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 42.9 percent of original size [2021-08-06 19:49:23,322 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 42.9 percent of original size [2021-08-06 19:49:23,326 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 12, result has 68.4 percent of original size [2021-08-06 19:49:23,331 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 12, result has 68.4 percent of original size [2021-08-06 19:49:23,355 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 13, result has 35.0 percent of original size [2021-08-06 19:49:23,356 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 13, result has 35.0 percent of original size [2021-08-06 19:49:23,368 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 52.9 percent of original size [2021-08-06 19:49:23,369 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 52.9 percent of original size [2021-08-06 19:49:23,382 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 41.2 percent of original size [2021-08-06 19:49:23,383 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 41.2 percent of original size [2021-08-06 19:49:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:49:23,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:49:23,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772728692] [2021-08-06 19:49:23,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772728692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:49:23,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:49:23,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:49:23,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345498614] [2021-08-06 19:49:23,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:49:23,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:49:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:49:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:49:23,401 INFO L87 Difference]: Start difference. First operand 93361 states and 272466 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:49:25,928 INFO L93 Difference]: Finished difference Result 263653 states and 790663 transitions. [2021-08-06 19:49:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:49:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:49:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:49:27,417 INFO L225 Difference]: With dead ends: 263653 [2021-08-06 19:49:27,418 INFO L226 Difference]: Without dead ends: 263603 [2021-08-06 19:49:27,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:49:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263603 states. [2021-08-06 19:49:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263603 to 113711. [2021-08-06 19:49:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113711 states, 113710 states have (on average 2.955764664497406) internal successors, (336100), 113710 states have internal predecessors, (336100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113711 states to 113711 states and 336100 transitions. [2021-08-06 19:49:32,852 INFO L78 Accepts]: Start accepts. Automaton has 113711 states and 336100 transitions. Word has length 75 [2021-08-06 19:49:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:49:32,853 INFO L470 AbstractCegarLoop]: Abstraction has 113711 states and 336100 transitions. [2021-08-06 19:49:32,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 113711 states and 336100 transitions. [2021-08-06 19:49:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:49:33,115 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:49:33,115 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:49:33,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:49:33,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:49:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:49:33,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1915978032, now seen corresponding path program 5 times [2021-08-06 19:49:33,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:49:33,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115557524] [2021-08-06 19:49:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:49:33,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:49:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:49:33,769 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 42.9 percent of original size [2021-08-06 19:49:33,770 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 42.9 percent of original size [2021-08-06 19:49:33,774 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 24, result has 11.1 percent of original size [2021-08-06 19:49:33,776 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 24, result has 11.1 percent of original size [2021-08-06 19:49:33,780 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 21, result has 46.2 percent of original size [2021-08-06 19:49:33,783 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 21, result has 46.2 percent of original size [2021-08-06 19:49:33,801 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 24, result has 74.2 percent of original size [2021-08-06 19:49:33,816 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 24, result has 74.2 percent of original size [2021-08-06 19:49:33,859 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 28, result has 56.9 percent of original size [2021-08-06 19:49:33,866 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 28, result has 56.9 percent of original size [2021-08-06 19:49:33,886 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 15, result has 65.9 percent of original size [2021-08-06 19:49:33,892 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 15, result has 65.9 percent of original size [2021-08-06 19:49:33,916 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 15, result has 65.9 percent of original size [2021-08-06 19:49:33,921 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 15, result has 65.9 percent of original size [2021-08-06 19:49:33,947 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 28, result has 50.0 percent of original size [2021-08-06 19:49:33,954 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 28, result has 50.0 percent of original size [2021-08-06 19:49:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:49:33,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:49:33,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115557524] [2021-08-06 19:49:33,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115557524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:49:33,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:49:33,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:49:33,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397919568] [2021-08-06 19:49:33,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:49:33,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:49:33,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:49:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:49:33,985 INFO L87 Difference]: Start difference. First operand 113711 states and 336100 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:49:35,963 INFO L93 Difference]: Finished difference Result 258142 states and 768631 transitions. [2021-08-06 19:49:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:49:35,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:49:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:49:37,453 INFO L225 Difference]: With dead ends: 258142 [2021-08-06 19:49:37,454 INFO L226 Difference]: Without dead ends: 258101 [2021-08-06 19:49:37,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 78.4ms TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:49:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258101 states. [2021-08-06 19:49:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258101 to 148576. [2021-08-06 19:49:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148576 states, 148575 states have (on average 3.010082449941107) internal successors, (447223), 148575 states have internal predecessors, (447223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148576 states to 148576 states and 447223 transitions. [2021-08-06 19:49:44,663 INFO L78 Accepts]: Start accepts. Automaton has 148576 states and 447223 transitions. Word has length 75 [2021-08-06 19:49:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:49:44,665 INFO L470 AbstractCegarLoop]: Abstraction has 148576 states and 447223 transitions. [2021-08-06 19:49:44,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 148576 states and 447223 transitions. [2021-08-06 19:49:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:49:45,154 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:49:45,154 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:49:45,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:49:45,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:49:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:49:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash -144905588, now seen corresponding path program 6 times [2021-08-06 19:49:45,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:49:45,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278457758] [2021-08-06 19:49:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:49:45,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:49:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:49:45,832 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 25, result has 10.7 percent of original size [2021-08-06 19:49:45,834 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 25, result has 10.7 percent of original size [2021-08-06 19:49:45,861 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 28, result has 9.7 percent of original size [2021-08-06 19:49:45,886 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 28, result has 9.7 percent of original size [2021-08-06 19:49:45,897 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 116, result has 5.7 percent of original size [2021-08-06 19:49:45,948 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 116, result has 5.7 percent of original size [2021-08-06 19:49:45,985 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 59, result has 28.9 percent of original size [2021-08-06 19:49:45,990 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 59, result has 28.9 percent of original size [2021-08-06 19:49:46,037 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 14, result has 79.4 percent of original size [2021-08-06 19:49:46,056 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 14, result has 79.4 percent of original size [2021-08-06 19:49:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:49:46,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:49:46,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278457758] [2021-08-06 19:49:46,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278457758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:49:46,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:49:46,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:49:46,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821373660] [2021-08-06 19:49:46,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:49:46,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:49:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:49:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:49:46,284 INFO L87 Difference]: Start difference. First operand 148576 states and 447223 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:49:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:49:52,285 INFO L93 Difference]: Finished difference Result 540853 states and 1658337 transitions. [2021-08-06 19:49:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-06 19:49:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:49:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:49:55,246 INFO L225 Difference]: With dead ends: 540853 [2021-08-06 19:49:55,246 INFO L226 Difference]: Without dead ends: 540853 [2021-08-06 19:49:55,246 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 432.4ms TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:49:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540853 states. [2021-08-06 19:50:06,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540853 to 195112. [2021-08-06 19:50:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195112 states, 195111 states have (on average 3.0272101521697907) internal successors, (590642), 195111 states have internal predecessors, (590642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:08,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195112 states to 195112 states and 590642 transitions. [2021-08-06 19:50:08,571 INFO L78 Accepts]: Start accepts. Automaton has 195112 states and 590642 transitions. Word has length 75 [2021-08-06 19:50:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:50:08,572 INFO L470 AbstractCegarLoop]: Abstraction has 195112 states and 590642 transitions. [2021-08-06 19:50:08,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 195112 states and 590642 transitions. [2021-08-06 19:50:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:50:09,079 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:50:09,079 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:50:09,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:50:09,080 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:50:09,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:50:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash -382668916, now seen corresponding path program 7 times [2021-08-06 19:50:09,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:50:09,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481888075] [2021-08-06 19:50:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:50:09,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:50:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:50:09,177 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 86.4 percent of original size [2021-08-06 19:50:09,179 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 86.4 percent of original size [2021-08-06 19:50:09,193 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 84.2 percent of original size [2021-08-06 19:50:09,197 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 84.2 percent of original size [2021-08-06 19:50:09,216 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 84.2 percent of original size [2021-08-06 19:50:09,218 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 84.2 percent of original size [2021-08-06 19:50:09,232 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 76.9 percent of original size [2021-08-06 19:50:09,235 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 76.9 percent of original size [2021-08-06 19:50:09,250 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 50.0 percent of original size [2021-08-06 19:50:09,252 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 50.0 percent of original size [2021-08-06 19:50:09,294 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 20, result has 64.3 percent of original size [2021-08-06 19:50:09,302 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 20, result has 64.3 percent of original size [2021-08-06 19:50:09,366 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 69.2 percent of original size [2021-08-06 19:50:09,367 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 69.2 percent of original size [2021-08-06 19:50:09,379 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 11.1 percent of original size [2021-08-06 19:50:09,380 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 11.1 percent of original size [2021-08-06 19:50:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:50:09,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:50:09,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481888075] [2021-08-06 19:50:09,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481888075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:50:09,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:50:09,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:50:09,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143199905] [2021-08-06 19:50:09,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:50:09,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:50:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:50:09,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:50:09,394 INFO L87 Difference]: Start difference. First operand 195112 states and 590642 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:50:12,697 INFO L93 Difference]: Finished difference Result 316765 states and 959188 transitions. [2021-08-06 19:50:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:50:12,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:50:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:50:15,654 INFO L225 Difference]: With dead ends: 316765 [2021-08-06 19:50:15,654 INFO L226 Difference]: Without dead ends: 314826 [2021-08-06 19:50:15,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:50:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314826 states. [2021-08-06 19:50:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314826 to 239881. [2021-08-06 19:50:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239881 states, 239880 states have (on average 3.0380315157578788) internal successors, (728763), 239880 states have internal predecessors, (728763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239881 states to 239881 states and 728763 transitions. [2021-08-06 19:50:25,342 INFO L78 Accepts]: Start accepts. Automaton has 239881 states and 728763 transitions. Word has length 75 [2021-08-06 19:50:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:50:25,342 INFO L470 AbstractCegarLoop]: Abstraction has 239881 states and 728763 transitions. [2021-08-06 19:50:25,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 239881 states and 728763 transitions. [2021-08-06 19:50:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:50:26,366 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:50:26,367 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:50:26,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:50:26,367 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:50:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:50:26,367 INFO L82 PathProgramCache]: Analyzing trace with hash -315706356, now seen corresponding path program 8 times [2021-08-06 19:50:26,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:50:26,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391340278] [2021-08-06 19:50:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:50:26,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:50:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:50:26,505 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 88.0 percent of original size [2021-08-06 19:50:26,508 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 88.0 percent of original size [2021-08-06 19:50:26,521 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 86.4 percent of original size [2021-08-06 19:50:26,523 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 86.4 percent of original size [2021-08-06 19:50:26,535 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 86.4 percent of original size [2021-08-06 19:50:26,538 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 86.4 percent of original size [2021-08-06 19:50:26,552 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 3, result has 81.3 percent of original size [2021-08-06 19:50:26,554 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 3, result has 81.3 percent of original size [2021-08-06 19:50:26,571 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 56.5 percent of original size [2021-08-06 19:50:26,573 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 56.5 percent of original size [2021-08-06 19:50:26,591 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 48, result has 40.7 percent of original size [2021-08-06 19:50:26,598 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 48, result has 40.7 percent of original size [2021-08-06 19:50:26,618 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 18, result has 45.5 percent of original size [2021-08-06 19:50:26,620 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 18, result has 45.5 percent of original size [2021-08-06 19:50:26,676 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 75.0 percent of original size [2021-08-06 19:50:26,677 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 75.0 percent of original size [2021-08-06 19:50:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:50:26,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:50:26,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391340278] [2021-08-06 19:50:26,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391340278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:50:26,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:50:26,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:50:26,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007416595] [2021-08-06 19:50:26,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:50:26,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:50:26,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:50:26,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:50:26,695 INFO L87 Difference]: Start difference. First operand 239881 states and 728763 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:50:30,678 INFO L93 Difference]: Finished difference Result 418813 states and 1270633 transitions. [2021-08-06 19:50:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:50:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:50:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:50:33,223 INFO L225 Difference]: With dead ends: 418813 [2021-08-06 19:50:33,223 INFO L226 Difference]: Without dead ends: 418813 [2021-08-06 19:50:33,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:50:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418813 states. [2021-08-06 19:50:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418813 to 286624. [2021-08-06 19:50:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286624 states, 286623 states have (on average 3.0767279667019047) internal successors, (881861), 286623 states have internal predecessors, (881861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286624 states to 286624 states and 881861 transitions. [2021-08-06 19:50:47,893 INFO L78 Accepts]: Start accepts. Automaton has 286624 states and 881861 transitions. Word has length 75 [2021-08-06 19:50:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:50:47,894 INFO L470 AbstractCegarLoop]: Abstraction has 286624 states and 881861 transitions. [2021-08-06 19:50:47,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:50:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 286624 states and 881861 transitions. [2021-08-06 19:50:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:50:49,846 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:50:49,846 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:50:49,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:50:49,847 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:50:49,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:50:49,847 INFO L82 PathProgramCache]: Analyzing trace with hash 765326252, now seen corresponding path program 9 times [2021-08-06 19:50:49,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:50:49,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138552352] [2021-08-06 19:50:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:50:49,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:50:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:50:50,044 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 80.0 percent of original size [2021-08-06 19:50:50,046 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 80.0 percent of original size [2021-08-06 19:50:50,069 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 56.5 percent of original size [2021-08-06 19:50:50,071 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 56.5 percent of original size [2021-08-06 19:50:50,086 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 50.0 percent of original size [2021-08-06 19:50:50,088 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 50.0 percent of original size [2021-08-06 19:50:50,102 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 19, result has 26.9 percent of original size [2021-08-06 19:50:50,103 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 19, result has 26.9 percent of original size [2021-08-06 19:50:50,128 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 10, result has 41.2 percent of original size [2021-08-06 19:50:50,129 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 10, result has 41.2 percent of original size [2021-08-06 19:50:50,139 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 15, result has 42.3 percent of original size [2021-08-06 19:50:50,140 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 15, result has 42.3 percent of original size [2021-08-06 19:50:50,217 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 9, result has 65.4 percent of original size [2021-08-06 19:50:50,220 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 9, result has 65.4 percent of original size [2021-08-06 19:50:50,261 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 50.0 percent of original size [2021-08-06 19:50:50,262 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 50.0 percent of original size [2021-08-06 19:50:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:50:50,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:50:50,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138552352] [2021-08-06 19:50:50,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138552352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:50:50,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:50:50,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-08-06 19:50:50,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162175091] [2021-08-06 19:50:50,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-06 19:50:50,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:50:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-06 19:50:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-08-06 19:50:50,313 INFO L87 Difference]: Start difference. First operand 286624 states and 881861 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:51:01,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:51:01,934 INFO L93 Difference]: Finished difference Result 891576 states and 2761689 transitions. [2021-08-06 19:51:01,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-06 19:51:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:51:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:51:10,729 INFO L225 Difference]: With dead ends: 891576 [2021-08-06 19:51:10,729 INFO L226 Difference]: Without dead ends: 891576 [2021-08-06 19:51:10,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 635.1ms TimeCoverageRelationStatistics Valid=379, Invalid=811, Unknown=0, NotChecked=0, Total=1190 [2021-08-06 19:51:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891576 states. [2021-08-06 19:51:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891576 to 356085. [2021-08-06 19:51:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356085 states, 356084 states have (on average 3.0752856067669425) internal successors, (1095060), 356084 states have internal predecessors, (1095060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:51:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356085 states to 356085 states and 1095060 transitions. [2021-08-06 19:51:37,482 INFO L78 Accepts]: Start accepts. Automaton has 356085 states and 1095060 transitions. Word has length 75 [2021-08-06 19:51:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:51:37,483 INFO L470 AbstractCegarLoop]: Abstraction has 356085 states and 1095060 transitions. [2021-08-06 19:51:37,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:51:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 356085 states and 1095060 transitions. [2021-08-06 19:51:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-06 19:51:39,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:51:39,709 INFO L512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:51:39,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:51:39,709 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-06 19:51:39,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:51:39,710 INFO L82 PathProgramCache]: Analyzing trace with hash 930991378, now seen corresponding path program 10 times [2021-08-06 19:51:39,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:51:39,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197747518] [2021-08-06 19:51:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:51:39,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:51:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:51:39,899 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 46.7 percent of original size [2021-08-06 19:51:39,900 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 46.7 percent of original size [2021-08-06 19:51:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:51:39,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:51:39,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197747518] [2021-08-06 19:51:39,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197747518] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:51:39,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:51:39,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:51:39,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290965775] [2021-08-06 19:51:39,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:51:39,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:51:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:51:39,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:51:39,931 INFO L87 Difference]: Start difference. First operand 356085 states and 1095060 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:51:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:51:45,186 INFO L93 Difference]: Finished difference Result 387893 states and 1188157 transitions. [2021-08-06 19:51:45,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 19:51:45,186 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-06 19:51:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:51:48,927 INFO L225 Difference]: With dead ends: 387893 [2021-08-06 19:51:48,927 INFO L226 Difference]: Without dead ends: 386746 [2021-08-06 19:51:48,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 239.9ms TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:51:50,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386746 states.