/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_09-tricky_address4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:25:31,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:25:31,108 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-VariableLbe.epf [2023-08-25 17:25:31,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:25:31,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:25:31,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:25:31,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:25:31,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:25:31,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:25:31,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:25:31,145 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:25:31,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:25:31,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:25:31,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:25:31,148 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:25:31,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:25:31,148 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:25:31,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:25:31,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:25:31,149 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:25:31,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:25:31,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:25:31,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:25:31,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:25:31,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:25:31,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:25:31,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:25:31,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:25:31,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:25:31,151 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:25:31,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:25:31,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:25:31,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:25:31,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:25:31,411 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:25:31,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_09-tricky_address4.i [2023-08-25 17:25:32,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:25:32,606 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:25:32,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_09-tricky_address4.i [2023-08-25 17:25:32,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f8af880/8cbdb7128d014aedb2400cbb6f5fe885/FLAGe7fa93f28 [2023-08-25 17:25:32,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f8af880/8cbdb7128d014aedb2400cbb6f5fe885 [2023-08-25 17:25:32,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:25:32,628 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:25:32,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:25:32,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:25:32,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:25:32,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:25:32" (1/1) ... [2023-08-25 17:25:32,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7946bc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:32, skipping insertion in model container [2023-08-25 17:25:32,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:25:32" (1/1) ... [2023-08-25 17:25:32,676 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:25:32,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:25:32,922 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:25:32,943 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 17:25:32,944 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-25 17:25:32,949 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [741] [2023-08-25 17:25:32,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:25:33,021 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:25:33,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33 WrapperNode [2023-08-25 17:25:33,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:25:33,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:25:33,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:25:33,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:25:33,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,081 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2023-08-25 17:25:33,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:25:33,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:25:33,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:25:33,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:25:33,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:25:33,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:25:33,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:25:33,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:25:33,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (1/1) ... [2023-08-25 17:25:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:25:33,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:25:33,153 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) [2023-08-25 17:25:33,173 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 [2023-08-25 17:25:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:25:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:25:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:25:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:25:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:25:33,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:25:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:25:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:25:33,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:25:33,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:25:33,202 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 17:25:33,317 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:25:33,318 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:25:33,471 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:25:33,476 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:25:33,477 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-25 17:25:33,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:25:33 BoogieIcfgContainer [2023-08-25 17:25:33,478 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:25:33,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:25:33,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:25:33,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:25:33,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:25:32" (1/3) ... [2023-08-25 17:25:33,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf9f1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:25:33, skipping insertion in model container [2023-08-25 17:25:33,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:25:33" (2/3) ... [2023-08-25 17:25:33,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf9f1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:25:33, skipping insertion in model container [2023-08-25 17:25:33,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:25:33" (3/3) ... [2023-08-25 17:25:33,484 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_09-tricky_address4.i [2023-08-25 17:25:33,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:25:33,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-25 17:25:33,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:25:33,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 17:25:33,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 209 flow [2023-08-25 17:25:33,619 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-08-25 17:25:33,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:25:33,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 4/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-25 17:25:33,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 102 transitions, 209 flow [2023-08-25 17:25:33,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 101 transitions, 205 flow [2023-08-25 17:25:33,628 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:25:33,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 101 transitions, 205 flow [2023-08-25 17:25:33,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 101 transitions, 205 flow [2023-08-25 17:25:33,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 101 transitions, 205 flow [2023-08-25 17:25:33,654 INFO L124 PetriNetUnfolderBase]: 4/101 cut-off events. [2023-08-25 17:25:33,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:25:33,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 4/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-25 17:25:33,656 INFO L119 LiptonReduction]: Number of co-enabled transitions 2262 [2023-08-25 17:25:35,062 INFO L134 LiptonReduction]: Checked pairs total: 8906 [2023-08-25 17:25:35,062 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-25 17:25:35,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:25:35,075 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=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f95532, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:25:35,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-25 17:25:35,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:25:35,080 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-25 17:25:35,080 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:25:35,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:35,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:35,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:35,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 711355281, now seen corresponding path program 1 times [2023-08-25 17:25:35,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:35,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920501016] [2023-08-25 17:25:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:35,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920501016] [2023-08-25 17:25:35,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920501016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:25:35,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:25:35,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:25:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176816663] [2023-08-25 17:25:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:25:35,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:25:35,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:25:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:25:35,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 177 [2023-08-25 17:25:35,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-08-25 17:25:35,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:35,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 177 [2023-08-25 17:25:35,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:35,303 INFO L124 PetriNetUnfolderBase]: 37/165 cut-off events. [2023-08-25 17:25:35,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:25:35,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 165 events. 37/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 625 event pairs, 36 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 244. Up to 89 conditions per place. [2023-08-25 17:25:35,305 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 15 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-25 17:25:35,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 111 flow [2023-08-25 17:25:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:25:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:25:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-25 17:25:35,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2023-08-25 17:25:35,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-25 17:25:35,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-25 17:25:35,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:35,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-25 17:25:35,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2023-08-25 17:25:35,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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) [2023-08-25 17:25:35,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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) [2023-08-25 17:25:35,323 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 288 transitions. [2023-08-25 17:25:35,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 111 flow [2023-08-25 17:25:35,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:25:35,325 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-25 17:25:35,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-25 17:25:35,328 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-25 17:25:35,328 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-25 17:25:35,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-08-25 17:25:35,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:35,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:35,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:25:35,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:35,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:35,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1960432891, now seen corresponding path program 1 times [2023-08-25 17:25:35,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:35,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369472549] [2023-08-25 17:25:35,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:35,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:35,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369472549] [2023-08-25 17:25:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369472549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:25:35,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341404917] [2023-08-25 17:25:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:35,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:25:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:25:35,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:25:35,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 17:25:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:35,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:25:35,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:25:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:35,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:25:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341404917] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:25:35,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:25:35,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 17:25:35,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244219043] [2023-08-25 17:25:35,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:25:35,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 17:25:35,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:35,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 17:25:35,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 17:25:35,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 177 [2023-08-25 17:25:35,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 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) [2023-08-25 17:25:35,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:35,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 177 [2023-08-25 17:25:35,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:35,647 INFO L124 PetriNetUnfolderBase]: 37/168 cut-off events. [2023-08-25 17:25:35,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:25:35,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 168 events. 37/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 623 event pairs, 36 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 263. Up to 89 conditions per place. [2023-08-25 17:25:35,649 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 15 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-25 17:25:35,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 138 flow [2023-08-25 17:25:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:25:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:25:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2023-08-25 17:25:35,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301318267419962 [2023-08-25 17:25:35,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2023-08-25 17:25:35,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2023-08-25 17:25:35,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:35,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2023-08-25 17:25:35,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 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) [2023-08-25 17:25:35,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:35,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:35,656 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 563 transitions. [2023-08-25 17:25:35,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 138 flow [2023-08-25 17:25:35,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 134 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 17:25:35,657 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-25 17:25:35,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-25 17:25:35,658 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-25 17:25:35,658 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-25 17:25:35,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 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) [2023-08-25 17:25:35,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:35,659 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:35,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 17:25:35,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:25:35,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:35,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1754673354, now seen corresponding path program 2 times [2023-08-25 17:25:35,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:35,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809223164] [2023-08-25 17:25:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:35,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 17:25:36,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:36,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809223164] [2023-08-25 17:25:36,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809223164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:25:36,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:25:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:25:36,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045326533] [2023-08-25 17:25:36,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:25:36,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:25:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:36,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:25:36,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:25:36,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 177 [2023-08-25 17:25:36,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2023-08-25 17:25:36,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:36,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 177 [2023-08-25 17:25:36,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:36,436 INFO L124 PetriNetUnfolderBase]: 345/749 cut-off events. [2023-08-25 17:25:36,436 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 17:25:36,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 749 events. 345/749 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3554 event pairs, 162 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 1492. Up to 427 conditions per place. [2023-08-25 17:25:36,443 INFO L140 encePairwiseOnDemand]: 166/177 looper letters, 103 selfloop transitions, 22 changer transitions 0/125 dead transitions. [2023-08-25 17:25:36,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 125 transitions, 538 flow [2023-08-25 17:25:36,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:25:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:25:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 482 transitions. [2023-08-25 17:25:36,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538606403013183 [2023-08-25 17:25:36,446 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 482 transitions. [2023-08-25 17:25:36,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 482 transitions. [2023-08-25 17:25:36,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:36,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 482 transitions. [2023-08-25 17:25:36,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 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) [2023-08-25 17:25:36,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:36,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:36,452 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 482 transitions. [2023-08-25 17:25:36,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 125 transitions, 538 flow [2023-08-25 17:25:36,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 125 transitions, 524 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 17:25:36,456 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 250 flow [2023-08-25 17:25:36,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-25 17:25:36,457 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-08-25 17:25:36,457 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 250 flow [2023-08-25 17:25:36,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2023-08-25 17:25:36,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:36,457 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:36,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 17:25:36,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:36,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:36,459 INFO L85 PathProgramCache]: Analyzing trace with hash -364685487, now seen corresponding path program 1 times [2023-08-25 17:25:36,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:36,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990490548] [2023-08-25 17:25:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:36,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 17:25:36,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:36,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990490548] [2023-08-25 17:25:36,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990490548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:25:36,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:25:36,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:25:36,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196014411] [2023-08-25 17:25:36,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:25:36,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:25:36,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:36,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:25:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:25:36,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 177 [2023-08-25 17:25:36,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 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) [2023-08-25 17:25:36,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:36,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 177 [2023-08-25 17:25:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:36,919 INFO L124 PetriNetUnfolderBase]: 434/948 cut-off events. [2023-08-25 17:25:36,919 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-08-25 17:25:36,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 948 events. 434/948 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5008 event pairs, 174 based on Foata normal form. 0/850 useless extension candidates. Maximal degree in co-relation 2351. Up to 638 conditions per place. [2023-08-25 17:25:36,923 INFO L140 encePairwiseOnDemand]: 166/177 looper letters, 117 selfloop transitions, 26 changer transitions 0/143 dead transitions. [2023-08-25 17:25:36,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 143 transitions, 786 flow [2023-08-25 17:25:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:25:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:25:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 484 transitions. [2023-08-25 17:25:36,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455743879472693 [2023-08-25 17:25:36,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 484 transitions. [2023-08-25 17:25:36,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 484 transitions. [2023-08-25 17:25:36,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:36,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 484 transitions. [2023-08-25 17:25:36,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 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) [2023-08-25 17:25:36,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:36,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:36,928 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 250 flow. Second operand 6 states and 484 transitions. [2023-08-25 17:25:36,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 143 transitions, 786 flow [2023-08-25 17:25:36,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 143 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:25:36,937 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 428 flow [2023-08-25 17:25:36,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-25 17:25:36,938 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-08-25 17:25:36,939 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 428 flow [2023-08-25 17:25:36,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 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) [2023-08-25 17:25:36,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:36,939 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:36,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 17:25:36,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:36,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 129294706, now seen corresponding path program 1 times [2023-08-25 17:25:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864450843] [2023-08-25 17:25:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:37,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864450843] [2023-08-25 17:25:37,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864450843] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:25:37,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010873332] [2023-08-25 17:25:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:37,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:25:37,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:25:37,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:25:37,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 17:25:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:37,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 17:25:37,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:25:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:37,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:25:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:25:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010873332] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:25:37,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:25:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-25 17:25:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764022532] [2023-08-25 17:25:37,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:25:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 17:25:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 17:25:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-25 17:25:37,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 177 [2023-08-25 17:25:37,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 428 flow. Second operand has 12 states, 12 states have (on average 91.41666666666667) internal successors, (1097), 12 states have internal predecessors, (1097), 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) [2023-08-25 17:25:37,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:37,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 177 [2023-08-25 17:25:37,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:37,248 INFO L124 PetriNetUnfolderBase]: 132/486 cut-off events. [2023-08-25 17:25:37,248 INFO L125 PetriNetUnfolderBase]: For 245/252 co-relation queries the response was YES. [2023-08-25 17:25:37,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 486 events. 132/486 cut-off events. For 245/252 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3042 event pairs, 59 based on Foata normal form. 6/479 useless extension candidates. Maximal degree in co-relation 1195. Up to 227 conditions per place. [2023-08-25 17:25:37,250 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 35 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-25 17:25:37,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 556 flow [2023-08-25 17:25:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 17:25:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 17:25:37,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1112 transitions. [2023-08-25 17:25:37,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235404896421846 [2023-08-25 17:25:37,253 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1112 transitions. [2023-08-25 17:25:37,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1112 transitions. [2023-08-25 17:25:37,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:37,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1112 transitions. [2023-08-25 17:25:37,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.66666666666667) internal successors, (1112), 12 states have internal predecessors, (1112), 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) [2023-08-25 17:25:37,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 177.0) internal successors, (2301), 13 states have internal predecessors, (2301), 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) [2023-08-25 17:25:37,258 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 177.0) internal successors, (2301), 13 states have internal predecessors, (2301), 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) [2023-08-25 17:25:37,258 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 428 flow. Second operand 12 states and 1112 transitions. [2023-08-25 17:25:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 556 flow [2023-08-25 17:25:37,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 556 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:25:37,261 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 512 flow [2023-08-25 17:25:37,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-08-25 17:25:37,262 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-08-25 17:25:37,262 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 512 flow [2023-08-25 17:25:37,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 91.41666666666667) internal successors, (1097), 12 states have internal predecessors, (1097), 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) [2023-08-25 17:25:37,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:37,263 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:37,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 17:25:37,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:25:37,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:37,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1012549394, now seen corresponding path program 2 times [2023-08-25 17:25:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202809834] [2023-08-25 17:25:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:25:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:37,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202809834] [2023-08-25 17:25:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202809834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:25:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:25:37,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:25:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100262010] [2023-08-25 17:25:37,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:25:37,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:25:37,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:37,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:25:37,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:25:37,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 177 [2023-08-25 17:25:37,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2023-08-25 17:25:37,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:37,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 177 [2023-08-25 17:25:37,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:37,990 INFO L124 PetriNetUnfolderBase]: 619/1341 cut-off events. [2023-08-25 17:25:37,990 INFO L125 PetriNetUnfolderBase]: For 817/817 co-relation queries the response was YES. [2023-08-25 17:25:37,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 1341 events. 619/1341 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7650 event pairs, 213 based on Foata normal form. 0/1222 useless extension candidates. Maximal degree in co-relation 3855. Up to 863 conditions per place. [2023-08-25 17:25:37,996 INFO L140 encePairwiseOnDemand]: 162/177 looper letters, 145 selfloop transitions, 59 changer transitions 2/206 dead transitions. [2023-08-25 17:25:37,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 206 transitions, 1421 flow [2023-08-25 17:25:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:25:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:25:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-08-25 17:25:37,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387947269303202 [2023-08-25 17:25:37,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-08-25 17:25:37,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-08-25 17:25:37,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:37,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-08-25 17:25:37,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2023-08-25 17:25:38,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:38,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:38,000 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 512 flow. Second operand 6 states and 466 transitions. [2023-08-25 17:25:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 206 transitions, 1421 flow [2023-08-25 17:25:38,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 206 transitions, 1373 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-25 17:25:38,005 INFO L231 Difference]: Finished difference. Result has 86 places, 142 transitions, 982 flow [2023-08-25 17:25:38,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=982, PETRI_PLACES=86, PETRI_TRANSITIONS=142} [2023-08-25 17:25:38,006 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2023-08-25 17:25:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 142 transitions, 982 flow [2023-08-25 17:25:38,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 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) [2023-08-25 17:25:38,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:38,006 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:38,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 17:25:38,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:38,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash 89381196, now seen corresponding path program 1 times [2023-08-25 17:25:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:38,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387612366] [2023-08-25 17:25:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:25:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:25:38,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:25:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387612366] [2023-08-25 17:25:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387612366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:25:38,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:25:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:25:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422380398] [2023-08-25 17:25:38,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:25:38,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:25:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:25:38,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:25:38,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:25:38,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 177 [2023-08-25 17:25:38,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 142 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2023-08-25 17:25:38,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:25:38,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 177 [2023-08-25 17:25:38,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:25:38,559 INFO L124 PetriNetUnfolderBase]: 803/1726 cut-off events. [2023-08-25 17:25:38,559 INFO L125 PetriNetUnfolderBase]: For 2250/2250 co-relation queries the response was YES. [2023-08-25 17:25:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 1726 events. 803/1726 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10456 event pairs, 220 based on Foata normal form. 0/1648 useless extension candidates. Maximal degree in co-relation 6090. Up to 1144 conditions per place. [2023-08-25 17:25:38,568 INFO L140 encePairwiseOnDemand]: 162/177 looper letters, 166 selfloop transitions, 72 changer transitions 55/293 dead transitions. [2023-08-25 17:25:38,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 293 transitions, 2379 flow [2023-08-25 17:25:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:25:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:25:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-25 17:25:38,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-25 17:25:38,569 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-25 17:25:38,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-25 17:25:38,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:25:38,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-25 17:25:38,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2023-08-25 17:25:38,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:38,572 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 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) [2023-08-25 17:25:38,572 INFO L175 Difference]: Start difference. First operand has 86 places, 142 transitions, 982 flow. Second operand 6 states and 472 transitions. [2023-08-25 17:25:38,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 293 transitions, 2379 flow [2023-08-25 17:25:38,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 293 transitions, 2311 flow, removed 34 selfloop flow, removed 0 redundant places. [2023-08-25 17:25:38,583 INFO L231 Difference]: Finished difference. Result has 95 places, 184 transitions, 1470 flow [2023-08-25 17:25:38,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1470, PETRI_PLACES=95, PETRI_TRANSITIONS=184} [2023-08-25 17:25:38,583 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-08-25 17:25:38,583 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 184 transitions, 1470 flow [2023-08-25 17:25:38,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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) [2023-08-25 17:25:38,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:25:38,584 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:25:38,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 17:25:38,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:25:38,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:25:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1125954593, now seen corresponding path program 1 times [2023-08-25 17:25:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:25:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055599395] [2023-08-25 17:25:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:25:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:25:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:25:38,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 17:25:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 17:25:38,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 17:25:38,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 17:25:38,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-25 17:25:38,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-25 17:25:38,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-25 17:25:38,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-25 17:25:38,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-25 17:25:38,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-25 17:25:38,654 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-25 17:25:38,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 17:25:38,654 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-08-25 17:25:38,658 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:25:38,658 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:25:38,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:25:38 BasicIcfg [2023-08-25 17:25:38,699 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:25:38,699 INFO L158 Benchmark]: Toolchain (without parser) took 6071.39ms. Allocated memory was 331.4MB in the beginning and 503.3MB in the end (delta: 172.0MB). Free memory was 306.1MB in the beginning and 297.7MB in the end (delta: 8.4MB). Peak memory consumption was 182.3MB. Max. memory is 16.0GB. [2023-08-25 17:25:38,699 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 331.4MB. Free memory is still 307.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:25:38,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.30ms. Allocated memory is still 331.4MB. Free memory was 305.8MB in the beginning and 277.8MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 17:25:38,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.34ms. Allocated memory is still 331.4MB. Free memory was 277.8MB in the beginning and 275.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 17:25:38,700 INFO L158 Benchmark]: Boogie Preprocessor took 28.75ms. Allocated memory is still 331.4MB. Free memory was 275.2MB in the beginning and 273.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:25:38,700 INFO L158 Benchmark]: RCFGBuilder took 365.09ms. Allocated memory is still 331.4MB. Free memory was 273.1MB in the beginning and 256.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-25 17:25:38,700 INFO L158 Benchmark]: TraceAbstraction took 5219.27ms. Allocated memory was 331.4MB in the beginning and 503.3MB in the end (delta: 172.0MB). Free memory was 255.6MB in the beginning and 297.7MB in the end (delta: -42.1MB). Peak memory consumption was 132.0MB. Max. memory is 16.0GB. [2023-08-25 17:25:38,702 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 331.4MB. Free memory is still 307.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 393.30ms. Allocated memory is still 331.4MB. Free memory was 305.8MB in the beginning and 277.8MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.34ms. Allocated memory is still 331.4MB. Free memory was 277.8MB in the beginning and 275.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.75ms. Allocated memory is still 331.4MB. Free memory was 275.2MB in the beginning and 273.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 365.09ms. Allocated memory is still 331.4MB. Free memory was 273.1MB in the beginning and 256.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5219.27ms. Allocated memory was 331.4MB in the beginning and 503.3MB in the end (delta: 172.0MB). Free memory was 255.6MB in the beginning and 297.7MB in the end (delta: -42.1MB). Peak memory consumption was 132.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 741]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [741] - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 101 PlacesBefore, 39 PlacesAfterwards, 101 TransitionsBefore, 36 TransitionsAfterwards, 2262 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 8906 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2718, independent: 2322, independent conditional: 0, independent unconditional: 2322, dependent: 396, dependent conditional: 0, dependent unconditional: 396, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1084, independent: 1033, independent conditional: 0, independent unconditional: 1033, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2718, independent: 1289, independent conditional: 0, independent unconditional: 1289, dependent: 345, dependent conditional: 0, dependent unconditional: 345, unknown: 1084, unknown conditional: 0, unknown unconditional: 1084] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 944]: Data race detected Data race detected The following path leads to a data race: [L922-L925] 0 struct s { int datum; pthread_mutex_t mutex; } a[10]; [L937] 0 int i = 0; VAL [a={1:0}, i=0] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=1] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=2] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=3] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=4] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=5] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=6] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=7] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=8] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=9] [L937] COND TRUE 0 i < 10 [L937] 0 i++ VAL [a={1:0}, i=10] [L937] COND FALSE 0 !(i < 10) [L939] 0 int i = __VERIFIER_nondet_int(); [L940] CALL 0 assume_abort_if_not(0 <= i && i < 10) [L11] COND FALSE 0 !(!cond) [L940] RET 0 assume_abort_if_not(0 <= i && i < 10) [L941] 0 pthread_t t1; [L942] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [a={1:0}, i=1, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, t1={2:0}] [L927] 1 int i = __VERIFIER_nondet_int(); [L928] CALL 1 assume_abort_if_not(0 <= i && i < 9) [L11] COND FALSE 1 !(!cond) [L928] RET 1 assume_abort_if_not(0 <= i && i < 9) [L929] 1 struct s *p = &a[i]; [L931] 1 i++ [L932] EXPR 1 a[i].datum VAL [a={1:0}, a[i].datum=0, arg={0:0}, arg={0:0}, i=1, p={1:0}] [L944] EXPR 0 a[i].datum VAL [a={1:0}, a[i].datum=0, i=1, t1={2:0}] [L932] 1 a[i].datum++ VAL [a={1:0}, a[i].datum=0, arg={0:0}, arg={0:0}, i=1, p={1:0}] [L944] 0 a[i].datum++ VAL [a={1:0}, a[i].datum=0, i=1, t1={2:0}] [L932] 1 a[i].datum++ VAL [a={1:0}, a[i].datum=0, arg={0:0}, arg={0:0}, i=1, p={1:0}] [L944] 0 a[i].datum++ VAL [a={1:0}, a[i].datum=0, i=1, t1={2:0}] [L932] 1 a[i].datum++ VAL [a={1:0}, a[i].datum=0, arg={0:0}, arg={0:0}, i=1, p={1:0}] [L944] 0 a[i].datum++ VAL [a={1:0}, a[i].datum=0, i=1, t1={2:0}] [L932] 1 a[i].datum++ VAL [a={1:0}, a[i].datum=0, arg={0:0}, arg={0:0}, i=1, p={1:0}] [L944] 0 a[i].datum++ VAL [a={1:0}, a[i].datum=0, i=1, t1={2:0}] [L932] 1 a[i].datum++ VAL [a={1:0}, a[i].datum++=0, a[i].datum++=281, a[i].datum=0, arg={0:0}, arg={0:0}, i=1, p={1:0}] [L944] 0 a[i].datum++ VAL [a={1:0}, a[i].datum=0, i=1, t1={2:0}] Now there is a data race (on the heap) between C: a[i].datum++ [932] and C: a[i].datum++ [944] - UnprovableResult [Line: 944]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 942]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 932]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 932]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 139 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 959 IncrementalHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 64 mSDtfsCounter, 959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1470occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 130/163 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-25 17:25:38,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...