/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:35:33,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:35:33,938 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-SemanticLbe.epf [2023-11-17 15:35:33,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:35:33,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:35:33,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:35:33,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:35:33,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:35:33,976 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:35:33,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:35:33,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:35:33,980 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:35:33,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:35:33,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:35:33,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:35:33,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:35:33,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:35:33,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:35:33,983 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:35:33,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:35:33,983 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:35:33,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:35:33,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:35:33,984 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:35:33,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:35:33,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:35:33,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:35:33,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:35:33,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:35:33,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:35:33,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:35:33,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:35:33,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:35:34,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:35:34,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:35:34,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:35:34,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:35:34,265 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:35:34,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-11-17 15:35:35,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:35:35,734 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:35:35,735 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-11-17 15:35:35,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e7d9e1b2/120019e337f04bcb8e6dfb3e89c73107/FLAG653a951ef [2023-11-17 15:35:35,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e7d9e1b2/120019e337f04bcb8e6dfb3e89c73107 [2023-11-17 15:35:35,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:35:35,763 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:35:35,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:35:35,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:35:35,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:35:35,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:35:35" (1/1) ... [2023-11-17 15:35:35,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be36974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:35, skipping insertion in model container [2023-11-17 15:35:35,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:35:35" (1/1) ... [2023-11-17 15:35:35,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:35:36,094 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_09-ptrmunge_racing.i[30176,30189] [2023-11-17 15:35:36,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:35:36,143 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:35:36,184 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_09-ptrmunge_racing.i[30176,30189] [2023-11-17 15:35:36,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:35:36,236 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:35:36,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36 WrapperNode [2023-11-17 15:35:36,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:35:36,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:35:36,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:35:36,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:35:36,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,314 INFO L138 Inliner]: procedures = 173, calls = 54, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 245 [2023-11-17 15:35:36,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:35:36,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:35:36,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:35:36,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:35:36,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:35:36,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:35:36,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:35:36,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:35:36,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (1/1) ... [2023-11-17 15:35:36,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:35:36,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:35:36,383 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) [2023-11-17 15:35:36,391 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 [2023-11-17 15:35:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:35:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 15:35:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 15:35:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:35:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:35:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:35:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:35:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 15:35:36,412 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 15:35:36,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:35:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:35:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:35:36,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:35:36,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:35:36,415 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:35:36,532 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:35:36,535 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:35:36,917 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:35:36,956 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:35:36,956 INFO L307 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-17 15:35:36,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:35:36 BoogieIcfgContainer [2023-11-17 15:35:36,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:35:36,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:35:36,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:35:36,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:35:36,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:35:35" (1/3) ... [2023-11-17 15:35:36,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1ac0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:35:36, skipping insertion in model container [2023-11-17 15:35:36,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:36" (2/3) ... [2023-11-17 15:35:36,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1ac0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:35:36, skipping insertion in model container [2023-11-17 15:35:36,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:35:36" (3/3) ... [2023-11-17 15:35:36,966 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-11-17 15:35:36,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:35:36,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:35:36,984 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:35:37,093 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 15:35:37,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 235 transitions, 490 flow [2023-11-17 15:35:37,305 INFO L124 PetriNetUnfolderBase]: 58/421 cut-off events. [2023-11-17 15:35:37,305 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:35:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 421 events. 58/421 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1921 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-11-17 15:35:37,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 235 transitions, 490 flow [2023-11-17 15:35:37,331 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 235 transitions, 490 flow [2023-11-17 15:35:37,340 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:35:37,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 235 transitions, 490 flow [2023-11-17 15:35:37,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 235 transitions, 490 flow [2023-11-17 15:35:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 235 transitions, 490 flow [2023-11-17 15:35:37,421 INFO L124 PetriNetUnfolderBase]: 58/421 cut-off events. [2023-11-17 15:35:37,422 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:35:37,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 421 events. 58/421 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1921 event pairs, 0 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-11-17 15:35:37,443 INFO L119 LiptonReduction]: Number of co-enabled transitions 23598 [2023-11-17 15:35:42,257 INFO L134 LiptonReduction]: Checked pairs total: 34182 [2023-11-17 15:35:42,257 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-11-17 15:35:42,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:35:42,277 INFO L357 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=false, 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;@359a0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:35:42,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:35:42,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:35:42,281 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-11-17 15:35:42,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:35:42,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:35:42,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-17 15:35:42,283 INFO L420 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)] === [2023-11-17 15:35:42,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:35:42,287 INFO L85 PathProgramCache]: Analyzing trace with hash 435996947, now seen corresponding path program 1 times [2023-11-17 15:35:42,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:35:42,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036381519] [2023-11-17 15:35:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:35:42,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:35:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:35:42,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:35:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:35:42,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:35:42,538 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:35:42,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-11-17 15:35:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-17 15:35:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-17 15:35:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-11-17 15:35:42,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-17 15:35:42,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-17 15:35:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:35:42,544 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 15:35:42,549 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 15:35:42,549 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 15:35:42,620 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-17 15:35:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 379 transitions, 802 flow [2023-11-17 15:35:42,900 INFO L124 PetriNetUnfolderBase]: 197/1226 cut-off events. [2023-11-17 15:35:42,901 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2023-11-17 15:35:42,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 1226 events. 197/1226 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7640 event pairs, 2 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 753. Up to 32 conditions per place. [2023-11-17 15:35:42,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 379 transitions, 802 flow [2023-11-17 15:35:42,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 328 places, 379 transitions, 802 flow [2023-11-17 15:35:42,948 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:35:42,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 328 places, 379 transitions, 802 flow [2023-11-17 15:35:42,948 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 328 places, 379 transitions, 802 flow [2023-11-17 15:35:42,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 379 transitions, 802 flow [2023-11-17 15:35:43,161 INFO L124 PetriNetUnfolderBase]: 197/1226 cut-off events. [2023-11-17 15:35:43,161 INFO L125 PetriNetUnfolderBase]: For 72/78 co-relation queries the response was YES. [2023-11-17 15:35:43,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 1226 events. 197/1226 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7640 event pairs, 2 based on Foata normal form. 0/1034 useless extension candidates. Maximal degree in co-relation 753. Up to 32 conditions per place. [2023-11-17 15:35:43,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 88044 [2023-11-17 15:35:49,847 INFO L134 LiptonReduction]: Checked pairs total: 159023 [2023-11-17 15:35:49,847 INFO L136 LiptonReduction]: Total number of compositions: 330 [2023-11-17 15:35:49,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:35:49,858 INFO L357 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=false, 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;@359a0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:35:49,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 15:35:49,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:35:49,864 INFO L124 PetriNetUnfolderBase]: 7/39 cut-off events. [2023-11-17 15:35:49,864 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:35:49,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:35:49,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:35:49,864 INFO L420 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)] === [2023-11-17 15:35:49,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:35:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2130207356, now seen corresponding path program 1 times [2023-11-17 15:35:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:35:49,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389207677] [2023-11-17 15:35:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:35:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:35:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:35:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:35:50,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:35:50,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389207677] [2023-11-17 15:35:50,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389207677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:35:50,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:35:50,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:35:50,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619192011] [2023-11-17 15:35:50,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:35:50,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:35:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:35:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:35:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:35:50,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 709 [2023-11-17 15:35:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 147 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 229.4) internal successors, (1147), 5 states have internal predecessors, (1147), 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) [2023-11-17 15:35:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:35:50,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 709 [2023-11-17 15:35:50,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand