/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/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:02:04,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:02:04,851 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 15:02:04,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:02:04,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:02:04,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:02:04,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:02:04,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:02:04,881 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:02:04,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:02:04,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:02:04,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:02:04,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:02:04,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:02:04,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:02:04,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:02:04,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:02:04,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:02:04,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:02:04,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:02:04,886 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:02:04,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:02:04,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:02:04,887 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:02:04,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:02:04,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:02:04,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:02:04,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:02:04,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:02:04,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:02:04,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:02:04,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:02:04,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:02:04,889 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:02:05,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:02:05,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:02:05,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:02:05,104 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:02:05,104 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:02:05,105 INFO L431 ainManager$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 [2023-12-09 15:02:06,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:02:06,498 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:02:06,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-12-09 15:02:06,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f23cc68/188117f6e1654bc68d6bb5c960336379/FLAGf9287de8a [2023-12-09 15:02:06,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07f23cc68/188117f6e1654bc68d6bb5c960336379 [2023-12-09 15:02:06,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:02:06,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:02:06,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:02:06,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:02:06,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:02:06,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:02:06" (1/1) ... [2023-12-09 15:02:06,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53215361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:06, skipping insertion in model container [2023-12-09 15:02:06,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:02:06" (1/1) ... [2023-12-09 15:02:06,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:02:07,021 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] [2023-12-09 15:02:07,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:02:07,061 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:02:07,096 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] [2023-12-09 15:02:07,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:02:07,145 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:02:07,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07 WrapperNode [2023-12-09 15:02:07,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:02:07,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:02:07,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:02:07,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:02:07,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,206 INFO L138 Inliner]: procedures = 173, calls = 56, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 247 [2023-12-09 15:02:07,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:02:07,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:02:07,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:02:07,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:02:07,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:02:07,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:02:07,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:02:07,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:02:07,258 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (1/1) ... [2023-12-09 15:02:07,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:02:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:02:07,297 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 15:02:07,314 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 15:02:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:02:07,322 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-09 15:02:07,322 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-09 15:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 15:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:02:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-12-09 15:02:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-12-09 15:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 15:02:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:02:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:02:07,326 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 15:02:07,425 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:02:07,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:02:07,704 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:02:07,736 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:02:07,736 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-12-09 15:02:07,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:02:07 BoogieIcfgContainer [2023-12-09 15:02:07,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:02:07,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:02:07,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:02:07,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:02:07,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:02:06" (1/3) ... [2023-12-09 15:02:07,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f976e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:02:07, skipping insertion in model container [2023-12-09 15:02:07,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:07" (2/3) ... [2023-12-09 15:02:07,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f976e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:02:07, skipping insertion in model container [2023-12-09 15:02:07,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:02:07" (3/3) ... [2023-12-09 15:02:07,747 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-12-09 15:02:07,760 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:02:07,760 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 15:02:07,760 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:02:07,842 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-09 15:02:07,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 237 transitions, 494 flow [2023-12-09 15:02:07,955 INFO L124 PetriNetUnfolderBase]: 58/423 cut-off events. [2023-12-09 15:02:07,955 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-12-09 15:02:07,982 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. [2023-12-09 15:02:07,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 237 transitions, 494 flow [2023-12-09 15:02:07,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 237 transitions, 494 flow [2023-12-09 15:02:08,001 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:02:08,005 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;@791edce4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:02:08,005 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 15:02:08,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:02:08,037 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-12-09 15:02:08,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 15:02:08,037 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:08,038 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, 1, 1, 1, 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 15:02:08,038 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)] === [2023-12-09 15:02:08,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:08,042 INFO L85 PathProgramCache]: Analyzing trace with hash -555241278, now seen corresponding path program 1 times [2023-12-09 15:02:08,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:08,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909439826] [2023-12-09 15:02:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:08,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 15:02:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:08,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 15:02:08,210 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 15:02:08,211 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-12-09 15:02:08,212 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-12-09 15:02:08,213 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-12-09 15:02:08,213 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 15:02:08,213 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 15:02:08,213 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 15:02:08,214 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:02:08,214 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-12-09 15:02:08,216 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 15:02:08,216 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 15:02:08,271 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-12-09 15:02:08,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 381 transitions, 806 flow [2023-12-09 15:02:08,478 INFO L124 PetriNetUnfolderBase]: 197/1228 cut-off events. [2023-12-09 15:02:08,478 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2023-12-09 15:02:08,499 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. [2023-12-09 15:02:08,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 381 transitions, 806 flow [2023-12-09 15:02:08,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 381 transitions, 806 flow [2023-12-09 15:02:08,519 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:02:08,520 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;@791edce4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:02:08,520 INFO L363 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-12-09 15:02:08,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:02:08,543 INFO L124 PetriNetUnfolderBase]: 24/260 cut-off events. [2023-12-09 15:02:08,543 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-12-09 15:02:08,544 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:08,544 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, 1, 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 15:02:08,544 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)] === [2023-12-09 15:02:08,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:08,545 INFO L85 PathProgramCache]: Analyzing trace with hash -67726005, now seen corresponding path program 1 times [2023-12-09 15:02:08,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:08,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121548531] [2023-12-09 15:02:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:08,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:09,155 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 15:02:09,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:09,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121548531] [2023-12-09 15:02:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121548531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:02:09,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:02:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:02:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666678414] [2023-12-09 15:02:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:02:09,163 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:02:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:02:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:02:09,193 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 381 [2023-12-09 15:02:09,199 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) [2023-12-09 15:02:09,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:09,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 381 [2023-12-09 15:02:09,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand