/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/POPL2022/incr-decr10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 19:04:04,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 19:04:04,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 19:04:04,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 19:04:04,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-21 19:04:04,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-21 19:04:04,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-21 19:04:04,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-21 19:04:04,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-21 19:04:04,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-21 19:04:04,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-21 19:04:04,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-21 19:04:04,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-21 19:04:04,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-21 19:04:04,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-21 19:04:04,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-21 19:04:04,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-21 19:04:04,497 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 [2021-08-21 19:04:04,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 19:04:04,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 19:04:04,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 19:04:04,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 19:04:04,528 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 19:04:04,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 19:04:04,528 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 19:04:04,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 19:04:04,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 19:04:04,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 19:04:04,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 19:04:04,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 19:04:04,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 19:04:04,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 19:04:04,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 19:04:04,531 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-21 19:04:04,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 19:04:04,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 19:04:04,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 19:04:04,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 19:04:04,787 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 19:04:04,787 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 19:04:04,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl [2021-08-21 19:04:04,788 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr10.bpl' [2021-08-21 19:04:04,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 19:04:04,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 19:04:04,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 19:04:04,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 19:04:04,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 19:04:04,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 19:04:04,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 19:04:04,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 19:04:04,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 19:04:04,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 19:04:04,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 19:04:04,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 19:04:04,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 19:04:04,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/1) ... [2021-08-21 19:04:04,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 19:04:04,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:04,867 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) [2021-08-21 19:04:04,884 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 [2021-08-21 19:04:04,915 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 19:04:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 19:04:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 19:04:04,915 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-21 19:04:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-21 19:04:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-21 19:04:04,916 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 19:04:05,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 19:04:05,042 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-21 19:04:05,045 INFO L202 PluginConnector]: Adding new model incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:05 BoogieIcfgContainer [2021-08-21 19:04:05,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 19:04:05,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 19:04:05,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 19:04:05,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 19:04:05,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 07:04:04" (1/2) ... [2021-08-21 19:04:05,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbce4d5 and model type incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:05, skipping insertion in model container [2021-08-21 19:04:05,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:05" (2/2) ... [2021-08-21 19:04:05,051 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr10.bpl [2021-08-21 19:04:05,060 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 19:04:05,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 19:04:05,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 19:04:05,061 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 19:04:05,219 INFO L148 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2021-08-21 19:04:05,263 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 19:04:05,270 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 [2021-08-21 19:04:05,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-21 19:04:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 118099 states, 75453 states have (on average 2.152054921606828) internal successors, (162379), 118098 states have internal predecessors, (162379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:12,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-21 19:04:12,417 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:12,418 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] [2021-08-21 19:04:12,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:12,429 INFO L82 PathProgramCache]: Analyzing trace with hash -533378928, now seen corresponding path program 1 times [2021-08-21 19:04:12,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:12,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929293536] [2021-08-21 19:04:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:12,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 19:04:12,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:12,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929293536] [2021-08-21 19:04:12,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929293536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 19:04:12,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 19:04:12,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-21 19:04:12,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588123831] [2021-08-21 19:04:12,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 19:04:12,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 19:04:12,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 19:04:12,665 INFO L87 Difference]: Start difference. First operand has 118099 states, 75453 states have (on average 2.152054921606828) internal successors, (162379), 118098 states have internal predecessors, (162379), 0 states have call successors, (0), 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, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:13,644 INFO L93 Difference]: Finished difference Result 121168 states and 167483 transitions. [2021-08-21 19:04:13,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 19:04:13,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-21 19:04:13,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:13,671 INFO L225 Difference]: With dead ends: 121168 [2021-08-21 19:04:13,671 INFO L226 Difference]: Without dead ends: 3101 [2021-08-21 19:04:13,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 19:04:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2021-08-21 19:04:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3101. [2021-08-21 19:04:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3100 states have (on average 2.015483870967742) internal successors, (6248), 3100 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 6248 transitions. [2021-08-21 19:04:14,038 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 6248 transitions. Word has length 32 [2021-08-21 19:04:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:14,039 INFO L470 AbstractCegarLoop]: Abstraction has 3101 states and 6248 transitions. [2021-08-21 19:04:14,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:14,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 6248 transitions. [2021-08-21 19:04:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-21 19:04:14,049 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:14,049 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] [2021-08-21 19:04:14,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 19:04:14,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash 717879918, now seen corresponding path program 1 times [2021-08-21 19:04:14,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:14,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064059660] [2021-08-21 19:04:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:14,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:14,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:14,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064059660] [2021-08-21 19:04:14,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064059660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 19:04:14,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 19:04:14,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-21 19:04:14,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913454393] [2021-08-21 19:04:14,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-21 19:04:14,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:14,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-21 19:04:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 19:04:14,190 INFO L87 Difference]: Start difference. First operand 3101 states and 6248 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:14,338 INFO L93 Difference]: Finished difference Result 3229 states and 6759 transitions. [2021-08-21 19:04:14,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-21 19:04:14,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-08-21 19:04:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:14,367 INFO L225 Difference]: With dead ends: 3229 [2021-08-21 19:04:14,367 INFO L226 Difference]: Without dead ends: 3215 [2021-08-21 19:04:14,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-21 19:04:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-08-21 19:04:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3197. [2021-08-21 19:04:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3197 states, 3196 states have (on average 2.073529411764706) internal successors, (6627), 3196 states have internal predecessors, (6627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 6627 transitions. [2021-08-21 19:04:14,495 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 6627 transitions. Word has length 34 [2021-08-21 19:04:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:14,495 INFO L470 AbstractCegarLoop]: Abstraction has 3197 states and 6627 transitions. [2021-08-21 19:04:14,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 6627 transitions. [2021-08-21 19:04:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 19:04:14,503 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:14,503 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] [2021-08-21 19:04:14,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 19:04:14,503 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:14,503 INFO L82 PathProgramCache]: Analyzing trace with hash 330683888, now seen corresponding path program 1 times [2021-08-21 19:04:14,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:14,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038959363] [2021-08-21 19:04:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:14,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:14,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:14,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038959363] [2021-08-21 19:04:14,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038959363] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:14,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387267704] [2021-08-21 19:04:14,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:14,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:14,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:14,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:14,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-21 19:04:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:14,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-21 19:04:14,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387267704] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:14,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:14,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-21 19:04:14,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511701868] [2021-08-21 19:04:14,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 19:04:14,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 19:04:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 19:04:14,989 INFO L87 Difference]: Start difference. First operand 3197 states and 6627 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:15,137 INFO L93 Difference]: Finished difference Result 3606 states and 7956 transitions. [2021-08-21 19:04:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-21 19:04:15,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-21 19:04:15,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:15,153 INFO L225 Difference]: With dead ends: 3606 [2021-08-21 19:04:15,155 INFO L226 Difference]: Without dead ends: 3586 [2021-08-21 19:04:15,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 19:04:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2021-08-21 19:04:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3474. [2021-08-21 19:04:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 2.1416642672041464) internal successors, (7438), 3473 states have internal predecessors, (7438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 7438 transitions. [2021-08-21 19:04:15,333 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 7438 transitions. Word has length 36 [2021-08-21 19:04:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:15,333 INFO L470 AbstractCegarLoop]: Abstraction has 3474 states and 7438 transitions. [2021-08-21 19:04:15,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 7438 transitions. [2021-08-21 19:04:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-21 19:04:15,339 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:15,339 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] [2021-08-21 19:04:15,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-21 19:04:15,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:15,559 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:15,560 INFO L82 PathProgramCache]: Analyzing trace with hash 721160946, now seen corresponding path program 1 times [2021-08-21 19:04:15,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:15,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740488826] [2021-08-21 19:04:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:15,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:15,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:15,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740488826] [2021-08-21 19:04:15,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740488826] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:15,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597755622] [2021-08-21 19:04:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:15,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:15,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:15,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-21 19:04:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:15,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-21 19:04:15,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:15,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597755622] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:15,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:15,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-21 19:04:15,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891064571] [2021-08-21 19:04:15,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 19:04:15,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 19:04:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 19:04:15,947 INFO L87 Difference]: Start difference. First operand 3474 states and 7438 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:16,108 INFO L93 Difference]: Finished difference Result 4415 states and 10006 transitions. [2021-08-21 19:04:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 19:04:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-08-21 19:04:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:16,124 INFO L225 Difference]: With dead ends: 4415 [2021-08-21 19:04:16,124 INFO L226 Difference]: Without dead ends: 4383 [2021-08-21 19:04:16,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.5ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 19:04:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4383 states. [2021-08-21 19:04:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4383 to 3998. [2021-08-21 19:04:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3998 states, 3997 states have (on average 2.167125344008006) internal successors, (8662), 3997 states have internal predecessors, (8662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 8662 transitions. [2021-08-21 19:04:16,198 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 8662 transitions. Word has length 38 [2021-08-21 19:04:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:16,200 INFO L470 AbstractCegarLoop]: Abstraction has 3998 states and 8662 transitions. [2021-08-21 19:04:16,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 8662 transitions. [2021-08-21 19:04:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-21 19:04:16,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:16,207 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] [2021-08-21 19:04:16,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:16,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-21 19:04:16,428 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1160707056, now seen corresponding path program 1 times [2021-08-21 19:04:16,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:16,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773837033] [2021-08-21 19:04:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:16,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:16,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:16,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773837033] [2021-08-21 19:04:16,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773837033] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:16,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735096623] [2021-08-21 19:04:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:16,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:16,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:16,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-21 19:04:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:16,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-21 19:04:16,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:16,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735096623] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:16,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:16,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-21 19:04:16,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377261967] [2021-08-21 19:04:16,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 19:04:16,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 19:04:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 19:04:16,938 INFO L87 Difference]: Start difference. First operand 3998 states and 8662 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:17,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:17,199 INFO L93 Difference]: Finished difference Result 5637 states and 12585 transitions. [2021-08-21 19:04:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 19:04:17,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-08-21 19:04:17,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:17,221 INFO L225 Difference]: With dead ends: 5637 [2021-08-21 19:04:17,221 INFO L226 Difference]: Without dead ends: 5581 [2021-08-21 19:04:17,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 19:04:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2021-08-21 19:04:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 4680. [2021-08-21 19:04:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4680 states, 4679 states have (on average 2.1342167129728575) internal successors, (9986), 4679 states have internal predecessors, (9986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4680 states to 4680 states and 9986 transitions. [2021-08-21 19:04:17,315 INFO L78 Accepts]: Start accepts. Automaton has 4680 states and 9986 transitions. Word has length 40 [2021-08-21 19:04:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:17,316 INFO L470 AbstractCegarLoop]: Abstraction has 4680 states and 9986 transitions. [2021-08-21 19:04:17,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4680 states and 9986 transitions. [2021-08-21 19:04:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 19:04:17,323 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:17,323 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] [2021-08-21 19:04:17,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:17,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:17,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:17,537 INFO L82 PathProgramCache]: Analyzing trace with hash 21734030, now seen corresponding path program 1 times [2021-08-21 19:04:17,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:17,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941040591] [2021-08-21 19:04:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:17,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:17,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:17,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941040591] [2021-08-21 19:04:17,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941040591] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:17,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578028536] [2021-08-21 19:04:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:17,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:17,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:17,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-21 19:04:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:17,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-21 19:04:17,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:18,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578028536] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:18,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:18,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-21 19:04:18,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829942619] [2021-08-21 19:04:18,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 19:04:18,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:18,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 19:04:18,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 19:04:18,317 INFO L87 Difference]: Start difference. First operand 4680 states and 9986 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:18,763 INFO L93 Difference]: Finished difference Result 6959 states and 14968 transitions. [2021-08-21 19:04:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-21 19:04:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 19:04:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:18,787 INFO L225 Difference]: With dead ends: 6959 [2021-08-21 19:04:18,787 INFO L226 Difference]: Without dead ends: 6855 [2021-08-21 19:04:18,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-21 19:04:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2021-08-21 19:04:18,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 5288. [2021-08-21 19:04:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 2.077170418006431) internal successors, (10982), 5287 states have internal predecessors, (10982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 10982 transitions. [2021-08-21 19:04:18,886 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 10982 transitions. Word has length 42 [2021-08-21 19:04:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:18,886 INFO L470 AbstractCegarLoop]: Abstraction has 5288 states and 10982 transitions. [2021-08-21 19:04:18,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 10982 transitions. [2021-08-21 19:04:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-21 19:04:18,894 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:18,894 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] [2021-08-21 19:04:18,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:19,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:19,112 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:19,112 INFO L82 PathProgramCache]: Analyzing trace with hash 39246032, now seen corresponding path program 1 times [2021-08-21 19:04:19,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:19,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763842822] [2021-08-21 19:04:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:19,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:19,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:19,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763842822] [2021-08-21 19:04:19,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763842822] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:19,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487712673] [2021-08-21 19:04:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:19,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:19,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:19,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:19,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-21 19:04:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:19,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-21 19:04:19,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:19,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487712673] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:19,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:19,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-21 19:04:19,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286823976] [2021-08-21 19:04:19,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-21 19:04:19,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-21 19:04:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-21 19:04:19,681 INFO L87 Difference]: Start difference. First operand 5288 states and 10982 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:20,069 INFO L93 Difference]: Finished difference Result 7953 states and 16497 transitions. [2021-08-21 19:04:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 19:04:20,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-08-21 19:04:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:20,088 INFO L225 Difference]: With dead ends: 7953 [2021-08-21 19:04:20,088 INFO L226 Difference]: Without dead ends: 7753 [2021-08-21 19:04:20,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-21 19:04:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7753 states. [2021-08-21 19:04:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7753 to 5610. [2021-08-21 19:04:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5610 states, 5609 states have (on average 2.0303084328757355) internal successors, (11388), 5609 states have internal predecessors, (11388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5610 states to 5610 states and 11388 transitions. [2021-08-21 19:04:20,187 INFO L78 Accepts]: Start accepts. Automaton has 5610 states and 11388 transitions. Word has length 44 [2021-08-21 19:04:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:20,187 INFO L470 AbstractCegarLoop]: Abstraction has 5610 states and 11388 transitions. [2021-08-21 19:04:20,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5610 states and 11388 transitions. [2021-08-21 19:04:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-21 19:04:20,197 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:20,198 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] [2021-08-21 19:04:20,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:20,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:20,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1768760398, now seen corresponding path program 1 times [2021-08-21 19:04:20,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:20,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824703727] [2021-08-21 19:04:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:20,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:20,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:20,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824703727] [2021-08-21 19:04:20,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824703727] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:20,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969091006] [2021-08-21 19:04:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:20,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:20,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:20,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:20,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-21 19:04:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:20,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-21 19:04:20,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:21,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969091006] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:21,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:21,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-21 19:04:21,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753644281] [2021-08-21 19:04:21,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-21 19:04:21,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-21 19:04:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-21 19:04:21,027 INFO L87 Difference]: Start difference. First operand 5610 states and 11388 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:21,494 INFO L93 Difference]: Finished difference Result 8357 states and 16923 transitions. [2021-08-21 19:04:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 19:04:21,495 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-21 19:04:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:21,514 INFO L225 Difference]: With dead ends: 8357 [2021-08-21 19:04:21,514 INFO L226 Difference]: Without dead ends: 7965 [2021-08-21 19:04:21,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-21 19:04:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2021-08-21 19:04:21,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 5564. [2021-08-21 19:04:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 2.004853496314938) internal successors, (11153), 5563 states have internal predecessors, (11153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 11153 transitions. [2021-08-21 19:04:21,619 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 11153 transitions. Word has length 46 [2021-08-21 19:04:21,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:21,620 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 11153 transitions. [2021-08-21 19:04:21,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:21,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 11153 transitions. [2021-08-21 19:04:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-21 19:04:21,628 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:21,628 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] [2021-08-21 19:04:21,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:21,845 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:21,846 INFO L82 PathProgramCache]: Analyzing trace with hash -989425424, now seen corresponding path program 1 times [2021-08-21 19:04:21,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:21,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316773395] [2021-08-21 19:04:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:21,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:21,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:21,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316773395] [2021-08-21 19:04:21,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316773395] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:21,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681656228] [2021-08-21 19:04:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:21,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:21,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:21,985 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:22,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-21 19:04:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:22,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-21 19:04:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:22,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681656228] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:22,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:22,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-21 19:04:22,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349224342] [2021-08-21 19:04:22,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-21 19:04:22,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-21 19:04:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-08-21 19:04:22,549 INFO L87 Difference]: Start difference. First operand 5564 states and 11153 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:23,048 INFO L93 Difference]: Finished difference Result 8120 states and 16254 transitions. [2021-08-21 19:04:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 19:04:23,048 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-08-21 19:04:23,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:23,065 INFO L225 Difference]: With dead ends: 8120 [2021-08-21 19:04:23,065 INFO L226 Difference]: Without dead ends: 7344 [2021-08-21 19:04:23,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-08-21 19:04:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7344 states. [2021-08-21 19:04:23,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7344 to 5117. [2021-08-21 19:04:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 1.9953088350273651) internal successors, (10208), 5116 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 10208 transitions. [2021-08-21 19:04:23,160 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 10208 transitions. Word has length 48 [2021-08-21 19:04:23,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:23,160 INFO L470 AbstractCegarLoop]: Abstraction has 5117 states and 10208 transitions. [2021-08-21 19:04:23,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 10208 transitions. [2021-08-21 19:04:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-21 19:04:23,168 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:23,169 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] [2021-08-21 19:04:23,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-08-21 19:04:23,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:23,385 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:23,385 INFO L82 PathProgramCache]: Analyzing trace with hash 30847058, now seen corresponding path program 1 times [2021-08-21 19:04:23,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:23,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888519998] [2021-08-21 19:04:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:23,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:23,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:23,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888519998] [2021-08-21 19:04:23,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888519998] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:23,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314881268] [2021-08-21 19:04:23,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:23,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:23,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:23,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-21 19:04:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:23,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-21 19:04:23,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:24,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314881268] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:24,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:24,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-21 19:04:24,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984391064] [2021-08-21 19:04:24,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-21 19:04:24,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-21 19:04:24,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-08-21 19:04:24,133 INFO L87 Difference]: Start difference. First operand 5117 states and 10208 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:24,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:24,676 INFO L93 Difference]: Finished difference Result 7173 states and 14299 transitions. [2021-08-21 19:04:24,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-21 19:04:24,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-21 19:04:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:24,687 INFO L225 Difference]: With dead ends: 7173 [2021-08-21 19:04:24,687 INFO L226 Difference]: Without dead ends: 5629 [2021-08-21 19:04:24,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-08-21 19:04:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2021-08-21 19:04:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 4105. [2021-08-21 19:04:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 4104 states have (on average 1.9919590643274854) internal successors, (8175), 4104 states have internal predecessors, (8175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 8175 transitions. [2021-08-21 19:04:24,769 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 8175 transitions. Word has length 50 [2021-08-21 19:04:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:24,770 INFO L470 AbstractCegarLoop]: Abstraction has 4105 states and 8175 transitions. [2021-08-21 19:04:24,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 8175 transitions. [2021-08-21 19:04:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-21 19:04:24,775 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 19:04:24,775 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] [2021-08-21 19:04:24,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-21 19:04:24,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-21 19:04:24,993 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 19:04:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 19:04:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1871462544, now seen corresponding path program 1 times [2021-08-21 19:04:24,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 19:04:24,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256990702] [2021-08-21 19:04:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:24,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 19:04:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:25,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 19:04:25,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256990702] [2021-08-21 19:04:25,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256990702] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:25,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728006751] [2021-08-21 19:04:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 19:04:25,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:25,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 19:04:25,200 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-21 19:04:25,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-21 19:04:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 19:04:25,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-21 19:04:25,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-21 19:04:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-21 19:04:25,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728006751] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-21 19:04:25,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-21 19:04:25,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-08-21 19:04:25,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675579613] [2021-08-21 19:04:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-21 19:04:25,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 19:04:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-21 19:04:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-08-21 19:04:25,880 INFO L87 Difference]: Start difference. First operand 4105 states and 8175 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 19:04:26,444 INFO L93 Difference]: Finished difference Result 4104 states and 8174 transitions. [2021-08-21 19:04:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 19:04:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-21 19:04:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 19:04:26,444 INFO L225 Difference]: With dead ends: 4104 [2021-08-21 19:04:26,444 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 19:04:26,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-08-21 19:04:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 19:04:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 19:04:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 19:04:26,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-08-21 19:04:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 19:04:26,445 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 19:04:26,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 19:04:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 19:04:26,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 19:04:26,447 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8INUSE_VIOLATION [2021-08-21 19:04:26,448 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9INUSE_VIOLATION [2021-08-21 19:04:26,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-21 19:04:26,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-21 19:04:26,652 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 19:04:26,652 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 19:04:26,654 INFO L202 PluginConnector]: Adding new model incr-decr10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:04:26 BasicIcfg [2021-08-21 19:04:26,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 19:04:26,655 INFO L168 Benchmark]: Toolchain (without parser) took 21846.06 ms. Allocated memory was 202.4 MB in the beginning and 5.4 GB in the end (delta: 5.2 GB). Free memory was 182.1 MB in the beginning and 4.0 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-08-21 19:04:26,655 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 202.4 MB. Free memory was 183.2 MB in the beginning and 183.1 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 19:04:26,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.84 ms. Allocated memory is still 202.4 MB. Free memory was 182.0 MB in the beginning and 180.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:26,655 INFO L168 Benchmark]: Boogie Preprocessor took 15.66 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 179.6 MB in the end (delta: 895.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:26,655 INFO L168 Benchmark]: RCFGBuilder took 200.51 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 169.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-21 19:04:26,656 INFO L168 Benchmark]: TraceAbstraction took 21606.59 ms. Allocated memory was 202.4 MB in the beginning and 5.4 GB in the end (delta: 5.2 GB). Free memory was 169.3 MB in the beginning and 4.0 GB in the end (delta: -3.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. [2021-08-21 19:04:26,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.41 ms. Allocated memory is still 202.4 MB. Free memory was 183.2 MB in the beginning and 183.1 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.84 ms. Allocated memory is still 202.4 MB. Free memory was 182.0 MB in the beginning and 180.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.66 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 179.6 MB in the end (delta: 895.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 200.51 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 169.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21606.59 ms. Allocated memory was 202.4 MB in the beginning and 5.4 GB in the end (delta: 5.2 GB). Free memory was 169.3 MB in the beginning and 4.0 GB in the end (delta: -3.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1402420, positive: 1358139, positive conditional: 1358139, positive unconditional: 0, negative: 44281, negative conditional: 44281, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1358139, positive: 1358139, positive conditional: 0, positive unconditional: 1358139, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 675, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 675, positive: 495, positive conditional: 0, positive unconditional: 495, negative: 180, negative conditional: 0, negative unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 180, positive: 180, positive conditional: 0, positive unconditional: 180, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 290, positive: 290, positive conditional: 0, positive unconditional: 290, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1358139, positive: 1357464, positive conditional: 0, positive unconditional: 1357464, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 675, unknown conditional: 0, unknown unconditional: 675] , Statistics on independence cache: Total cache size (in pairs): 675, Positive cache size: 675, Positive conditional cache size: 0, Positive unconditional cache size: 675, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 44281 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 12 procedures, 68 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 21404.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 1011.7ms, AutomataDifference: 4939.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6208.6ms, PartialOrderReductionTime: 6191.9ms, HoareTripleCheckerStatistics: 361 SDtfs, 0 SDslu, 1895 SDs, 0 SdLazy, 6252 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2517.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 423 SyntacticMatches, 19 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 415.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=118099occurred in iteration=0, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1303.3ms AutomataMinimizationTime, 11 MinimizatonAttempts, 11278 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 133.8ms SsaConstructionTime, 339.0ms SatisfiabilityAnalysisTime, 3821.1ms InterpolantComputationTime, 858 NumberOfCodeBlocks, 858 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 838 ConstructedInterpolants, 0 QuantifiedInterpolants, 5742 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2331 ConjunctsInSsa, 243 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 19/109 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 19:04:26,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...