/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:55:24,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:55:24,276 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 [2023-11-29 19:55:24,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:55:24,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:55:24,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:55:24,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:55:24,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:55:24,312 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:55:24,315 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:55:24,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:55:24,316 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:55:24,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:55:24,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:55:24,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:55:24,318 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:55:24,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:55:24,318 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:55:24,318 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:55:24,319 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:55:24,319 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:55:24,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:55:24,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:55:24,320 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:55:24,320 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:55:24,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:55:24,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:55:24,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:55:24,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:55:24,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:55:24,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:55:24,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:55:24,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:55:24,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:55:24,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:55:24,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:55:24,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:55:24,559 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:55:24,560 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:55:24,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-11-29 19:55:25,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:55:25,836 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:55:25,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-11-29 19:55:25,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf7a7697/69aac78c8a6147c4a6d69763dafaba30/FLAG55311eb44 [2023-11-29 19:55:25,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf7a7697/69aac78c8a6147c4a6d69763dafaba30 [2023-11-29 19:55:25,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:55:25,882 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:55:25,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:55:25,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:55:25,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:55:25,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:25" (1/1) ... [2023-11-29 19:55:25,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7b16a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:25, skipping insertion in model container [2023-11-29 19:55:25,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:55:25" (1/1) ... [2023-11-29 19:55:25,948 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:55:26,248 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2023-11-29 19:55:26,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:55:26,286 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:55:26,312 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2023-11-29 19:55:26,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:55:26,349 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:55:26,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26 WrapperNode [2023-11-29 19:55:26,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:55:26,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:55:26,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:55:26,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:55:26,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,389 INFO L138 Inliner]: procedures = 173, calls = 56, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 247 [2023-11-29 19:55:26,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:55:26,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:55:26,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:55:26,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:55:26,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:55:26,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:55:26,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:55:26,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:55:26,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (1/1) ... [2023-11-29 19:55:26,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:55:26,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:55:26,450 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) [2023-11-29 19:55:26,456 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 [2023-11-29 19:55:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 19:55:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 19:55:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 19:55:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:55:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 19:55:26,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:55:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:55:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-29 19:55:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-29 19:55:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:55:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:55:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 19:55:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:55:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:55:26,475 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:55:26,579 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:55:26,581 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:55:26,844 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:55:26,880 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:55:26,880 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-29 19:55:26,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:26 BoogieIcfgContainer [2023-11-29 19:55:26,881 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:55:26,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:55:26,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:55:26,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:55:26,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:55:25" (1/3) ... [2023-11-29 19:55:26,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b535d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:55:26, skipping insertion in model container [2023-11-29 19:55:26,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:55:26" (2/3) ... [2023-11-29 19:55:26,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b535d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:55:26, skipping insertion in model container [2023-11-29 19:55:26,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:55:26" (3/3) ... [2023-11-29 19:55:26,893 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-11-29 19:55:26,908 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:55:26,909 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 19:55:26,909 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:55:26,998 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 19:55:27,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 237 transitions, 494 flow [2023-11-29 19:55:27,134 INFO L124 PetriNetUnfolderBase]: 58/423 cut-off events. [2023-11-29 19:55:27,134 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 19:55:27,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 423 events. 58/423 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1924 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-11-29 19:55:27,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 237 transitions, 494 flow [2023-11-29 19:55:27,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 237 transitions, 494 flow [2023-11-29 19:55:27,170 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:55:27,179 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;@3cefd191, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:55:27,180 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-29 19:55:27,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:55:27,199 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-11-29 19:55:27,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:55:27,200 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:55:27,201 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:55:27,201 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-29 19:55:27,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:55:27,206 INFO L85 PathProgramCache]: Analyzing trace with hash -555241278, now seen corresponding path program 1 times [2023-11-29 19:55:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:55:27,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212726879] [2023-11-29 19:55:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:55:27,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:55:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:55:27,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 19:55:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 19:55:27,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 19:55:27,413 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-29 19:55:27,413 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-29 19:55:27,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-29 19:55:27,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-29 19:55:27,415 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-29 19:55:27,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-29 19:55:27,416 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-29 19:55:27,416 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:55:27,417 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 19:55:27,419 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 19:55:27,419 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 19:55:27,500 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-29 19:55:27,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 381 transitions, 806 flow [2023-11-29 19:55:27,830 INFO L124 PetriNetUnfolderBase]: 197/1228 cut-off events. [2023-11-29 19:55:27,830 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2023-11-29 19:55:27,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 1228 events. 197/1228 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7659 event pairs, 2 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 755. Up to 32 conditions per place. [2023-11-29 19:55:27,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 381 transitions, 806 flow [2023-11-29 19:55:27,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 381 transitions, 806 flow [2023-11-29 19:55:27,882 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:55:27,883 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;@3cefd191, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:55:27,883 INFO L363 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-29 19:55:27,911 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:55:27,912 INFO L124 PetriNetUnfolderBase]: 24/260 cut-off events. [2023-11-29 19:55:27,912 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-11-29 19:55:27,912 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:55:27,913 INFO L232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:55:27,913 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2023-11-29 19:55:27,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:55:27,914 INFO L85 PathProgramCache]: Analyzing trace with hash -67726005, now seen corresponding path program 1 times [2023-11-29 19:55:27,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:55:27,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237146578] [2023-11-29 19:55:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:55:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:55:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:55:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:55:28,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:55:28,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237146578] [2023-11-29 19:55:28,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237146578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:55:28,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:55:28,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 19:55:28,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811175916] [2023-11-29 19:55:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:55:28,574 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 19:55:28,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:55:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 19:55:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 19:55:28,610 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 381 [2023-11-29 19:55:28,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 381 transitions, 806 flow. Second operand has 12 states, 12 states have (on average 215.5) internal successors, (2586), 12 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:55:28,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:55:28,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 381 [2023-11-29 19:55:28,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand