/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-ext/03_incdec.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:51:31,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:51:31,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:51:31,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:51:31,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:51:31,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:51:31,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:51:31,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:51:31,987 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:51:31,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:51:31,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:51:31,990 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:51:31,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:51:31,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:51:31,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:51:31,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:51:31,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:51:31,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:51:31,992 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:51:31,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:51:31,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:51:31,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:51:31,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:51:31,994 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:51:31,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:51:31,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:31,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:51:31,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:51:31,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:51:31,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:51:31,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:51:31,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:51:31,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:51:31,997 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:51:32,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:51:32,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:51:32,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:51:32,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:51:32,219 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:51:32,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec.i [2023-12-09 14:51:33,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:51:33,443 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:51:33,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i [2023-12-09 14:51:33,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d6a8346/94fd8235ca5641798638768c0230600a/FLAGacc5cd8c4 [2023-12-09 14:51:33,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50d6a8346/94fd8235ca5641798638768c0230600a [2023-12-09 14:51:33,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:51:33,471 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:51:33,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:33,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:51:33,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:51:33,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60650077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33, skipping insertion in model container [2023-12-09 14:51:33,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,519 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:51:33,718 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30534,30547] [2023-12-09 14:51:33,722 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30928,30941] [2023-12-09 14:51:33,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:33,741 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:51:33,791 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30534,30547] [2023-12-09 14:51:33,794 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i[30928,30941] [2023-12-09 14:51:33,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:51:33,823 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:51:33,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33 WrapperNode [2023-12-09 14:51:33,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:51:33,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:33,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:51:33,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:51:33,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,868 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 133 [2023-12-09 14:51:33,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:51:33,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:51:33,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:51:33,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:51:33,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:51:33,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:51:33,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:51:33,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:51:33,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (1/1) ... [2023-12-09 14:51:33,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:51:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:51:33,939 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) [2023-12-09 14:51:33,943 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 [2023-12-09 14:51:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-09 14:51:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-09 14:51:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:51:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:51:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:51:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:51:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:51:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:51:33,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:51:33,963 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:51:34,143 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:51:34,145 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:51:34,340 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:51:34,416 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:51:34,416 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-09 14:51:34,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:34 BoogieIcfgContainer [2023-12-09 14:51:34,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:51:34,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:51:34,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:51:34,421 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:51:34,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:51:33" (1/3) ... [2023-12-09 14:51:34,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19974abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:34, skipping insertion in model container [2023-12-09 14:51:34,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:51:33" (2/3) ... [2023-12-09 14:51:34,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19974abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:51:34, skipping insertion in model container [2023-12-09 14:51:34,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:51:34" (3/3) ... [2023-12-09 14:51:34,423 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2023-12-09 14:51:34,435 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:51:34,436 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 14:51:34,436 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:51:34,499 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:34,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 83 transitions, 170 flow [2023-12-09 14:51:34,570 INFO L124 PetriNetUnfolderBase]: 7/94 cut-off events. [2023-12-09 14:51:34,571 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:34,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 186 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-12-09 14:51:34,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 83 transitions, 170 flow [2023-12-09 14:51:34,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 83 transitions, 170 flow [2023-12-09 14:51:34,598 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:34,603 INFO L362 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a3ab543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:34,605 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 14:51:34,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:34,638 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2023-12-09 14:51:34,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:51:34,638 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:34,639 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:34,640 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-12-09 14:51:34,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash 525232076, now seen corresponding path program 1 times [2023-12-09 14:51:34,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283926502] [2023-12-09 14:51:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:34,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:34,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:34,801 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:34,801 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 14:51:34,803 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 14:51:34,803 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 14:51:34,803 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 14:51:34,803 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 14:51:34,804 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:51:34,804 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:51:34,807 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:34,807 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 14:51:34,849 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:34,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 139 transitions, 288 flow [2023-12-09 14:51:34,903 INFO L124 PetriNetUnfolderBase]: 13/163 cut-off events. [2023-12-09 14:51:34,903 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:51:34,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 163 events. 13/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 518 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2023-12-09 14:51:34,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 139 transitions, 288 flow [2023-12-09 14:51:34,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 288 flow [2023-12-09 14:51:34,910 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:34,911 INFO L362 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a3ab543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:34,911 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-12-09 14:51:34,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:34,928 INFO L124 PetriNetUnfolderBase]: 3/89 cut-off events. [2023-12-09 14:51:34,928 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:51:34,929 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:34,929 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:34,929 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:51:34,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1854466289, now seen corresponding path program 1 times [2023-12-09 14:51:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923669261] [2023-12-09 14:51:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:34,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:34,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:34,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:34,989 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:34,989 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-12-09 14:51:34,989 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-12-09 14:51:34,989 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-12-09 14:51:34,989 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-12-09 14:51:34,990 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-12-09 14:51:34,991 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-12-09 14:51:34,991 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-12-09 14:51:34,991 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:51:34,991 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 14:51:34,992 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:34,992 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 14:51:35,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:35,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 195 transitions, 408 flow [2023-12-09 14:51:35,056 INFO L124 PetriNetUnfolderBase]: 19/232 cut-off events. [2023-12-09 14:51:35,056 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-09 14:51:35,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 19/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 851 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 178. Up to 8 conditions per place. [2023-12-09 14:51:35,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 195 transitions, 408 flow [2023-12-09 14:51:35,070 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 195 transitions, 408 flow [2023-12-09 14:51:35,071 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:35,071 INFO L362 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a3ab543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:35,071 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-09 14:51:35,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:35,083 INFO L124 PetriNetUnfolderBase]: 5/123 cut-off events. [2023-12-09 14:51:35,083 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:51:35,083 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:35,083 INFO L233 CegarLoopForPetriNet]: 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] [2023-12-09 14:51:35,083 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 846100674, now seen corresponding path program 1 times [2023-12-09 14:51:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951011807] [2023-12-09 14:51:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951011807] [2023-12-09 14:51:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951011807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:35,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:35,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:51:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680329542] [2023-12-09 14:51:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:35,283 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:51:35,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:35,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:51:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:51:35,317 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 195 [2023-12-09 14:51:35,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 195 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:35,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:35,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 195 [2023-12-09 14:51:35,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:38,766 INFO L124 PetriNetUnfolderBase]: 14902/30956 cut-off events. [2023-12-09 14:51:38,766 INFO L125 PetriNetUnfolderBase]: For 1825/1825 co-relation queries the response was YES. [2023-12-09 14:51:38,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54210 conditions, 30956 events. 14902/30956 cut-off events. For 1825/1825 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 322008 event pairs, 9166 based on Foata normal form. 10248/36958 useless extension candidates. Maximal degree in co-relation 10901. Up to 21023 conditions per place. [2023-12-09 14:51:39,032 INFO L140 encePairwiseOnDemand]: 177/195 looper letters, 89 selfloop transitions, 4 changer transitions 0/199 dead transitions. [2023-12-09 14:51:39,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 199 transitions, 614 flow [2023-12-09 14:51:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:51:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:51:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-12-09 14:51:39,046 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2023-12-09 14:51:39,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-12-09 14:51:39,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-12-09 14:51:39,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:39,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-12-09 14:51:39,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,065 INFO L308 CegarLoopForPetriNet]: 186 programPoint places, -10 predicate places. [2023-12-09 14:51:39,065 INFO L500 AbstractCegarLoop]: Abstraction has has 176 places, 199 transitions, 614 flow [2023-12-09 14:51:39,066 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,066 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:39,067 INFO L233 CegarLoopForPetriNet]: 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] [2023-12-09 14:51:39,069 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:51:39,070 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:39,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -508454656, now seen corresponding path program 1 times [2023-12-09 14:51:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:39,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784943205] [2023-12-09 14:51:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:39,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:39,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784943205] [2023-12-09 14:51:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784943205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:39,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 14:51:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475386932] [2023-12-09 14:51:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:39,278 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:39,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:39,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:39,280 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 195 [2023-12-09 14:51:39,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 199 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:39,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:39,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 195 [2023-12-09 14:51:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:51:43,842 INFO L124 PetriNetUnfolderBase]: 23987/49096 cut-off events. [2023-12-09 14:51:43,843 INFO L125 PetriNetUnfolderBase]: For 5096/14303 co-relation queries the response was YES. [2023-12-09 14:51:43,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120317 conditions, 49096 events. 23987/49096 cut-off events. For 5096/14303 co-relation queries the response was YES. Maximal size of possible extension queue 2170. Compared 539107 event pairs, 9776 based on Foata normal form. 44/43412 useless extension candidates. Maximal degree in co-relation 50846. Up to 32040 conditions per place. [2023-12-09 14:51:44,242 INFO L140 encePairwiseOnDemand]: 183/195 looper letters, 202 selfloop transitions, 16 changer transitions 0/320 dead transitions. [2023-12-09 14:51:44,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 320 transitions, 1553 flow [2023-12-09 14:51:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 14:51:44,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 14:51:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 863 transitions. [2023-12-09 14:51:44,244 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7376068376068377 [2023-12-09 14:51:44,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 863 transitions. [2023-12-09 14:51:44,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 863 transitions. [2023-12-09 14:51:44,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:51:44,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 863 transitions. [2023-12-09 14:51:44,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.83333333333334) internal successors, (863), 6 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:44,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:44,249 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 195.0) internal successors, (1365), 7 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:44,250 INFO L308 CegarLoopForPetriNet]: 186 programPoint places, -5 predicate places. [2023-12-09 14:51:44,250 INFO L500 AbstractCegarLoop]: Abstraction has has 181 places, 320 transitions, 1553 flow [2023-12-09 14:51:44,250 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:44,250 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:44,251 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:44,251 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:51:44,251 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-12-09 14:51:44,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:44,252 INFO L85 PathProgramCache]: Analyzing trace with hash -768005191, now seen corresponding path program 1 times [2023-12-09 14:51:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:44,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920015035] [2023-12-09 14:51:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:44,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 14:51:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 14:51:44,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 14:51:44,286 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 14:51:44,286 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-12-09 14:51:44,286 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-12-09 14:51:44,287 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-12-09 14:51:44,287 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:51:44,287 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-09 14:51:44,288 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 14:51:44,288 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 14:51:44,327 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:51:44,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 251 transitions, 530 flow [2023-12-09 14:51:44,355 INFO L124 PetriNetUnfolderBase]: 25/301 cut-off events. [2023-12-09 14:51:44,355 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-12-09 14:51:44,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 301 events. 25/301 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1206 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place. [2023-12-09 14:51:44,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 251 transitions, 530 flow [2023-12-09 14:51:44,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 251 transitions, 530 flow [2023-12-09 14:51:44,366 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:51:44,371 INFO L362 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a3ab543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:51:44,371 INFO L363 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-12-09 14:51:44,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:51:44,377 INFO L124 PetriNetUnfolderBase]: 5/120 cut-off events. [2023-12-09 14:51:44,377 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-09 14:51:44,377 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:51:44,377 INFO L233 CegarLoopForPetriNet]: 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] [2023-12-09 14:51:44,378 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-12-09 14:51:44,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:51:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1501074455, now seen corresponding path program 1 times [2023-12-09 14:51:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:51:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997736019] [2023-12-09 14:51:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:51:44,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:51:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:51:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:51:44,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:51:44,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997736019] [2023-12-09 14:51:44,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997736019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:51:44,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:51:44,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 14:51:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739817706] [2023-12-09 14:51:44,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:51:44,506 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 14:51:44,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:51:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 14:51:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 14:51:44,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 251 [2023-12-09 14:51:44,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 251 transitions, 530 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:51:44,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:51:44,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 251 [2023-12-09 14:51:44,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand