./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:43:44,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:43:44,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 10:43:44,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:43:44,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:43:44,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:43:44,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:43:44,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:43:44,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:43:44,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:43:44,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:43:44,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:43:44,866 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:43:44,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:43:44,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:43:44,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:43:44,868 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:43:44,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:43:44,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:43:44,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:43:44,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:43:44,869 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2025-03-17 10:43:45,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:43:45,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:43:45,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:43:45,097 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:43:45,097 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:43:45,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-03-17 10:43:46,203 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/490c1ae77/7411e42d42f441ddab15dd2ee4c74f8c/FLAG4f20411b2 [2025-03-17 10:43:46,466 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:43:46,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-03-17 10:43:46,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/490c1ae77/7411e42d42f441ddab15dd2ee4c74f8c/FLAG4f20411b2 [2025-03-17 10:43:46,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/490c1ae77/7411e42d42f441ddab15dd2ee4c74f8c [2025-03-17 10:43:46,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:43:46,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:43:46,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:43:46,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:43:46,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:43:46,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:43:46" (1/1) ... [2025-03-17 10:43:46,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d1b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:46, skipping insertion in model container [2025-03-17 10:43:46,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:43:46" (1/1) ... [2025-03-17 10:43:46,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:43:46,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:43:47,000 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:43:47,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:43:47,077 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:43:47,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47 WrapperNode [2025-03-17 10:43:47,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:43:47,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:43:47,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:43:47,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:43:47,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,106 INFO L138 Inliner]: procedures = 178, calls = 38, calls flagged for inlining = 16, calls inlined = 17, statements flattened = 214 [2025-03-17 10:43:47,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:43:47,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:43:47,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:43:47,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:43:47,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,122 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,123 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:43:47,127 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:43:47,127 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:43:47,127 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:43:47,128 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (1/1) ... [2025-03-17 10:43:47,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:43:47,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:43:47,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 10:43:47,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:43:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 10:43:47,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:43:47,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:43:47,170 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 10:43:47,258 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:43:47,259 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:43:47,539 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2025-03-17 10:43:47,540 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset); srcloc: null [2025-03-17 10:43:47,561 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:43:47,561 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:43:47,706 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:43:47,706 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 10:43:47,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:43:47 BoogieIcfgContainer [2025-03-17 10:43:47,706 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:43:47,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:43:47,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:43:47,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:43:47,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:43:46" (1/3) ... [2025-03-17 10:43:47,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228c5055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:43:47, skipping insertion in model container [2025-03-17 10:43:47,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:47" (2/3) ... [2025-03-17 10:43:47,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228c5055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:43:47, skipping insertion in model container [2025-03-17 10:43:47,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:43:47" (3/3) ... [2025-03-17 10:43:47,714 INFO L128 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2025-03-17 10:43:47,726 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:43:47,728 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 08_rand_cas.i that has 2 procedures, 145 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2025-03-17 10:43:47,729 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 10:43:47,803 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:47,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 158 transitions, 320 flow [2025-03-17 10:43:47,914 INFO L124 PetriNetUnfolderBase]: 13/165 cut-off events. [2025-03-17 10:43:47,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:43:47,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 165 events. 13/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 329 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2025-03-17 10:43:47,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 158 transitions, 320 flow [2025-03-17 10:43:47,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 158 transitions, 320 flow [2025-03-17 10:43:47,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:47,945 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a530ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:47,946 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-03-17 10:43:47,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:47,954 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2025-03-17 10:43:47,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:43:47,955 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:47,956 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:47,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-17 10:43:47,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:47,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2127301646, now seen corresponding path program 1 times [2025-03-17 10:43:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:47,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046427261] [2025-03-17 10:43:47,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:47,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:48,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 10:43:48,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 10:43:48,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:48,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046427261] [2025-03-17 10:43:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046427261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:48,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:43:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962670777] [2025-03-17 10:43:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:48,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:43:48,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:48,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:43:48,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:43:48,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2025-03-17 10:43:48,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 158 transitions, 320 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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) [2025-03-17 10:43:48,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:48,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2025-03-17 10:43:48,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:48,217 INFO L124 PetriNetUnfolderBase]: 4/129 cut-off events. [2025-03-17 10:43:48,218 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 10:43:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 129 events. 4/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 119 event pairs, 0 based on Foata normal form. 14/132 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2025-03-17 10:43:48,219 INFO L140 encePairwiseOnDemand]: 136/158 looper letters, 7 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2025-03-17 10:43:48,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 126 transitions, 270 flow [2025-03-17 10:43:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:43:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:43:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2025-03-17 10:43:48,231 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8892405063291139 [2025-03-17 10:43:48,233 INFO L175 Difference]: Start difference. First operand has 148 places, 158 transitions, 320 flow. Second operand 2 states and 281 transitions. [2025-03-17 10:43:48,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 126 transitions, 270 flow [2025-03-17 10:43:48,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:48,239 INFO L231 Difference]: Finished difference. Result has 126 places, 126 transitions, 256 flow [2025-03-17 10:43:48,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=256, PETRI_PLACES=126, PETRI_TRANSITIONS=126} [2025-03-17 10:43:48,245 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -22 predicate places. [2025-03-17 10:43:48,245 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 126 transitions, 256 flow [2025-03-17 10:43:48,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 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) [2025-03-17 10:43:48,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:48,246 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:48,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:43:48,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-17 10:43:48,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -67531150, now seen corresponding path program 1 times [2025-03-17 10:43:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102531631] [2025-03-17 10:43:48,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:48,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:48,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 10:43:48,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 10:43:48,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:48,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:48,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:48,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102531631] [2025-03-17 10:43:48,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102531631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:48,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:48,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:43:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658013771] [2025-03-17 10:43:48,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:48,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:43:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:48,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:43:48,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:43:48,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 158 [2025-03-17 10:43:48,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 126 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2025-03-17 10:43:48,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:48,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 158 [2025-03-17 10:43:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:48,351 INFO L124 PetriNetUnfolderBase]: 4/128 cut-off events. [2025-03-17 10:43:48,351 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 10:43:48,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 128 events. 4/128 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2025-03-17 10:43:48,352 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 8 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2025-03-17 10:43:48,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 274 flow [2025-03-17 10:43:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:43:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:43:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2025-03-17 10:43:48,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7953586497890295 [2025-03-17 10:43:48,355 INFO L175 Difference]: Start difference. First operand has 126 places, 126 transitions, 256 flow. Second operand 3 states and 377 transitions. [2025-03-17 10:43:48,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 274 flow [2025-03-17 10:43:48,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:48,359 INFO L231 Difference]: Finished difference. Result has 127 places, 125 transitions, 258 flow [2025-03-17 10:43:48,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=125} [2025-03-17 10:43:48,360 INFO L279 CegarLoopForPetriNet]: 148 programPoint places, -21 predicate places. [2025-03-17 10:43:48,360 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 125 transitions, 258 flow [2025-03-17 10:43:48,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2025-03-17 10:43:48,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:48,360 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:48,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:43:48,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-17 10:43:48,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2121320030, now seen corresponding path program 1 times [2025-03-17 10:43:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:48,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062850104] [2025-03-17 10:43:48,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:48,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 10:43:48,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 10:43:48,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:48,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:48,391 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:43:48,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-17 10:43:48,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-17 10:43:48,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:48,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:48,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:43:48,421 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:43:48,422 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-03-17 10:43:48,423 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-03-17 10:43:48,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-03-17 10:43:48,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-03-17 10:43:48,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-03-17 10:43:48,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-03-17 10:43:48,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-03-17 10:43:48,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-03-17 10:43:48,427 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-03-17 10:43:48,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-03-17 10:43:48,428 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-03-17 10:43:48,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:43:48,428 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-17 10:43:48,430 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:43:48,431 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 10:43:48,497 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:48,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 292 transitions, 594 flow [2025-03-17 10:43:48,581 INFO L124 PetriNetUnfolderBase]: 26/308 cut-off events. [2025-03-17 10:43:48,582 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:43:48,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 308 events. 26/308 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1109 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 275. Up to 3 conditions per place. [2025-03-17 10:43:48,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 292 transitions, 594 flow [2025-03-17 10:43:48,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 292 transitions, 594 flow [2025-03-17 10:43:48,594 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:48,594 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a530ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:48,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2025-03-17 10:43:48,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:48,600 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-17 10:43:48,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:43:48,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:48,600 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:48,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-03-17 10:43:48,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 748608755, now seen corresponding path program 1 times [2025-03-17 10:43:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693208502] [2025-03-17 10:43:48,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:48,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 10:43:48,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 10:43:48,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:48,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693208502] [2025-03-17 10:43:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693208502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:48,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:48,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:43:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21360594] [2025-03-17 10:43:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:48,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:43:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:48,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:43:48,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:43:48,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 292 [2025-03-17 10:43:48,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 292 transitions, 594 flow. Second operand has 2 states, 2 states have (on average 230.0) internal successors, (460), 2 states have internal predecessors, (460), 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) [2025-03-17 10:43:48,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:48,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 292 [2025-03-17 10:43:48,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:48,800 INFO L124 PetriNetUnfolderBase]: 78/1010 cut-off events. [2025-03-17 10:43:48,800 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-17 10:43:48,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 1010 events. 78/1010 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6409 event pairs, 42 based on Foata normal form. 146/1048 useless extension candidates. Maximal degree in co-relation 959. Up to 99 conditions per place. [2025-03-17 10:43:48,808 INFO L140 encePairwiseOnDemand]: 249/292 looper letters, 14 selfloop transitions, 0 changer transitions 0/232 dead transitions. [2025-03-17 10:43:48,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 232 transitions, 502 flow [2025-03-17 10:43:48,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:43:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:43:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 515 transitions. [2025-03-17 10:43:48,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8818493150684932 [2025-03-17 10:43:48,812 INFO L175 Difference]: Start difference. First operand has 271 places, 292 transitions, 594 flow. Second operand 2 states and 515 transitions. [2025-03-17 10:43:48,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 232 transitions, 502 flow [2025-03-17 10:43:48,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 232 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:48,817 INFO L231 Difference]: Finished difference. Result has 230 places, 232 transitions, 474 flow [2025-03-17 10:43:48,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=474, PETRI_PLACES=230, PETRI_TRANSITIONS=232} [2025-03-17 10:43:48,820 INFO L279 CegarLoopForPetriNet]: 271 programPoint places, -41 predicate places. [2025-03-17 10:43:48,820 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 232 transitions, 474 flow [2025-03-17 10:43:48,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 230.0) internal successors, (460), 2 states have internal predecessors, (460), 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) [2025-03-17 10:43:48,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:48,820 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:48,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:43:48,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-03-17 10:43:48,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:48,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2141458633, now seen corresponding path program 1 times [2025-03-17 10:43:48,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122847667] [2025-03-17 10:43:48,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:48,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 10:43:48,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 10:43:48,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:48,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:48,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122847667] [2025-03-17 10:43:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122847667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:43:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982462540] [2025-03-17 10:43:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:48,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:43:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:48,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:43:48,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:43:48,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 292 [2025-03-17 10:43:48,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 232 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2025-03-17 10:43:48,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:48,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 292 [2025-03-17 10:43:48,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:49,203 INFO L124 PetriNetUnfolderBase]: 179/1809 cut-off events. [2025-03-17 10:43:49,203 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-03-17 10:43:49,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 1809 events. 179/1809 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14016 event pairs, 45 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 2101. Up to 146 conditions per place. [2025-03-17 10:43:49,218 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 35 selfloop transitions, 6 changer transitions 0/251 dead transitions. [2025-03-17 10:43:49,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 251 transitions, 599 flow [2025-03-17 10:43:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:43:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:43:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2025-03-17 10:43:49,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8059360730593608 [2025-03-17 10:43:49,222 INFO L175 Difference]: Start difference. First operand has 230 places, 232 transitions, 474 flow. Second operand 3 states and 706 transitions. [2025-03-17 10:43:49,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 251 transitions, 599 flow [2025-03-17 10:43:49,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 251 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:49,226 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 526 flow [2025-03-17 10:43:49,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=234, PETRI_TRANSITIONS=238} [2025-03-17 10:43:49,228 INFO L279 CegarLoopForPetriNet]: 271 programPoint places, -37 predicate places. [2025-03-17 10:43:49,228 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 526 flow [2025-03-17 10:43:49,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 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) [2025-03-17 10:43:49,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:49,229 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:49,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:43:49,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2025-03-17 10:43:49,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 300255968, now seen corresponding path program 1 times [2025-03-17 10:43:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358956038] [2025-03-17 10:43:49,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:49,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 10:43:49,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 10:43:49,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:49,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:49,252 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:43:49,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 10:43:49,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 10:43:49,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:49,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:49,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:43:49,271 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2025-03-17 10:43:49,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2025-03-17 10:43:49,273 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2025-03-17 10:43:49,274 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2025-03-17 10:43:49,275 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2025-03-17 10:43:49,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:43:49,275 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-17 10:43:49,275 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:43:49,277 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 10:43:49,366 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:49,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 394 places, 426 transitions, 870 flow [2025-03-17 10:43:49,420 INFO L124 PetriNetUnfolderBase]: 39/451 cut-off events. [2025-03-17 10:43:49,421 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 10:43:49,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 451 events. 39/451 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2034 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 408. Up to 4 conditions per place. [2025-03-17 10:43:49,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 394 places, 426 transitions, 870 flow [2025-03-17 10:43:49,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 394 places, 426 transitions, 870 flow [2025-03-17 10:43:49,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:49,439 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a530ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:49,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2025-03-17 10:43:49,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:49,441 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-17 10:43:49,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:43:49,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:49,442 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:49,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-17 10:43:49,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2031932600, now seen corresponding path program 1 times [2025-03-17 10:43:49,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:49,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602748128] [2025-03-17 10:43:49,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:49,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:49,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 10:43:49,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 10:43:49,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:49,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602748128] [2025-03-17 10:43:49,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602748128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:49,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:49,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:43:49,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28058075] [2025-03-17 10:43:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:49,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:43:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:49,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:43:49,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:43:49,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 426 [2025-03-17 10:43:49,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 426 transitions, 870 flow. Second operand has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2025-03-17 10:43:49,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:49,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 426 [2025-03-17 10:43:49,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:50,461 INFO L124 PetriNetUnfolderBase]: 894/7533 cut-off events. [2025-03-17 10:43:50,461 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2025-03-17 10:43:50,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 7533 events. 894/7533 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 83800 event pairs, 630 based on Foata normal form. 1377/8090 useless extension candidates. Maximal degree in co-relation 7358. Up to 1030 conditions per place. [2025-03-17 10:43:50,516 INFO L140 encePairwiseOnDemand]: 362/426 looper letters, 21 selfloop transitions, 0 changer transitions 0/338 dead transitions. [2025-03-17 10:43:50,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 338 transitions, 736 flow [2025-03-17 10:43:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:43:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:43:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 749 transitions. [2025-03-17 10:43:50,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8791079812206573 [2025-03-17 10:43:50,523 INFO L175 Difference]: Start difference. First operand has 394 places, 426 transitions, 870 flow. Second operand 2 states and 749 transitions. [2025-03-17 10:43:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 338 transitions, 736 flow [2025-03-17 10:43:50,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 338 transitions, 734 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:50,529 INFO L231 Difference]: Finished difference. Result has 334 places, 338 transitions, 692 flow [2025-03-17 10:43:50,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=692, PETRI_PLACES=334, PETRI_TRANSITIONS=338} [2025-03-17 10:43:50,532 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -60 predicate places. [2025-03-17 10:43:50,532 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 338 transitions, 692 flow [2025-03-17 10:43:50,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 333.0) internal successors, (666), 2 states have internal predecessors, (666), 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) [2025-03-17 10:43:50,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:50,533 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:50,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:43:50,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-17 10:43:50,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:50,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1522843908, now seen corresponding path program 1 times [2025-03-17 10:43:50,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:50,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639759856] [2025-03-17 10:43:50,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:50,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:50,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 10:43:50,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 10:43:50,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:50,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:50,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:50,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639759856] [2025-03-17 10:43:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639759856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:50,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:43:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406288441] [2025-03-17 10:43:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:50,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:43:50,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:50,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:43:50,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:43:50,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 426 [2025-03-17 10:43:50,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 338 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 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) [2025-03-17 10:43:50,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:50,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 426 [2025-03-17 10:43:50,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:52,833 INFO L124 PetriNetUnfolderBase]: 3978/24874 cut-off events. [2025-03-17 10:43:52,833 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2025-03-17 10:43:52,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30384 conditions, 24874 events. 3978/24874 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 339008 event pairs, 1240 based on Foata normal form. 0/22285 useless extension candidates. Maximal degree in co-relation 30378. Up to 2807 conditions per place. [2025-03-17 10:43:53,072 INFO L140 encePairwiseOnDemand]: 414/426 looper letters, 53 selfloop transitions, 9 changer transitions 0/367 dead transitions. [2025-03-17 10:43:53,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 367 transitions, 884 flow [2025-03-17 10:43:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:43:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 10:43:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2025-03-17 10:43:53,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8020344287949922 [2025-03-17 10:43:53,076 INFO L175 Difference]: Start difference. First operand has 334 places, 338 transitions, 692 flow. Second operand 3 states and 1025 transitions. [2025-03-17 10:43:53,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 367 transitions, 884 flow [2025-03-17 10:43:53,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 367 transitions, 884 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:53,080 INFO L231 Difference]: Finished difference. Result has 338 places, 347 transitions, 770 flow [2025-03-17 10:43:53,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=770, PETRI_PLACES=338, PETRI_TRANSITIONS=347} [2025-03-17 10:43:53,081 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -56 predicate places. [2025-03-17 10:43:53,081 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 347 transitions, 770 flow [2025-03-17 10:43:53,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.3333333333333) internal successors, (964), 3 states have internal predecessors, (964), 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) [2025-03-17 10:43:53,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:53,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:43:53,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 10:43:53,082 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err12ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-17 10:43:53,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:53,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1059958356, now seen corresponding path program 1 times [2025-03-17 10:43:53,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:53,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123270494] [2025-03-17 10:43:53,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:53,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 10:43:53,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 10:43:53,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:53,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:53,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:53,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123270494] [2025-03-17 10:43:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123270494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:53,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:43:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922203384] [2025-03-17 10:43:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:53,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:43:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:53,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:43:53,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:43:53,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 426 [2025-03-17 10:43:53,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 347 transitions, 770 flow. Second operand has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 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) [2025-03-17 10:43:53,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:53,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 426 [2025-03-17 10:43:53,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:44:01,874 INFO L124 PetriNetUnfolderBase]: 26035/96970 cut-off events. [2025-03-17 10:44:01,874 INFO L125 PetriNetUnfolderBase]: For 2551/2556 co-relation queries the response was YES. [2025-03-17 10:44:02,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138386 conditions, 96970 events. 26035/96970 cut-off events. For 2551/2556 co-relation queries the response was YES. Maximal size of possible extension queue 1655. Compared 1407580 event pairs, 14368 based on Foata normal form. 0/86546 useless extension candidates. Maximal degree in co-relation 138378. Up to 30134 conditions per place. [2025-03-17 10:44:02,629 INFO L140 encePairwiseOnDemand]: 395/426 looper letters, 111 selfloop transitions, 94 changer transitions 0/498 dead transitions. [2025-03-17 10:44:02,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 498 transitions, 1522 flow [2025-03-17 10:44:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:44:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:44:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2000 transitions. [2025-03-17 10:44:02,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7824726134585289 [2025-03-17 10:44:02,633 INFO L175 Difference]: Start difference. First operand has 338 places, 347 transitions, 770 flow. Second operand 6 states and 2000 transitions. [2025-03-17 10:44:02,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 498 transitions, 1522 flow [2025-03-17 10:44:02,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 498 transitions, 1504 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 10:44:02,653 INFO L231 Difference]: Finished difference. Result has 345 places, 444 transitions, 1324 flow [2025-03-17 10:44:02,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=345, PETRI_TRANSITIONS=444} [2025-03-17 10:44:02,657 INFO L279 CegarLoopForPetriNet]: 394 programPoint places, -49 predicate places. [2025-03-17 10:44:02,657 INFO L471 AbstractCegarLoop]: Abstraction has has 345 places, 444 transitions, 1324 flow [2025-03-17 10:44:02,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 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) [2025-03-17 10:44:02,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:02,658 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:44:02,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 10:44:02,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2025-03-17 10:44:02,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash 602760045, now seen corresponding path program 1 times [2025-03-17 10:44:02,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:02,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476462053] [2025-03-17 10:44:02,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:02,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 10:44:02,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 10:44:02,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:02,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:44:02,676 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:44:02,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 10:44:02,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 10:44:02,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:02,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:44:02,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:44:02,689 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:44:02,689 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (64 of 65 remaining) [2025-03-17 10:44:02,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (63 of 65 remaining) [2025-03-17 10:44:02,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (62 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (61 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (60 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (59 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (58 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (57 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (56 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (55 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (54 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (52 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (51 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (50 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (49 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (48 of 65 remaining) [2025-03-17 10:44:02,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (47 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (46 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (45 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (44 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (43 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (42 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (41 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (39 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 65 remaining) [2025-03-17 10:44:02,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (31 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (29 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (25 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (23 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (22 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (21 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 65 remaining) [2025-03-17 10:44:02,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (15 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (13 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (12 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (11 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (10 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (8 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (7 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (5 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 65 remaining) [2025-03-17 10:44:02,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 65 remaining) [2025-03-17 10:44:02,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 10:44:02,694 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 10:44:02,694 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:44:02,694 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 10:44:02,783 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:44:02,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 517 places, 560 transitions, 1148 flow [2025-03-17 10:44:02,853 INFO L124 PetriNetUnfolderBase]: 52/594 cut-off events. [2025-03-17 10:44:02,854 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 10:44:02,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 594 events. 52/594 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3017 event pairs, 0 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 541. Up to 5 conditions per place. [2025-03-17 10:44:02,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 517 places, 560 transitions, 1148 flow [2025-03-17 10:44:02,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 517 places, 560 transitions, 1148 flow [2025-03-17 10:44:02,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:44:02,871 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a530ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:44:02,871 INFO L334 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2025-03-17 10:44:02,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:44:02,872 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2025-03-17 10:44:02,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:44:02,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:02,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:44:02,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err15ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2025-03-17 10:44:02,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1682314397, now seen corresponding path program 1 times [2025-03-17 10:44:02,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441918071] [2025-03-17 10:44:02,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:02,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 10:44:02,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 10:44:02,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:02,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:44:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:44:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:44:02,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441918071] [2025-03-17 10:44:02,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441918071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:44:02,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:44:02,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:44:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890783082] [2025-03-17 10:44:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:44:02,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:44:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:44:02,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:44:02,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:44:02,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 560 [2025-03-17 10:44:02,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 560 transitions, 1148 flow. Second operand has 2 states, 2 states have (on average 436.0) internal successors, (872), 2 states have internal predecessors, (872), 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) [2025-03-17 10:44:02,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:44:02,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 560 [2025-03-17 10:44:02,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:44:09,991 INFO L124 PetriNetUnfolderBase]: 8668/55314 cut-off events. [2025-03-17 10:44:09,991 INFO L125 PetriNetUnfolderBase]: For 3752/3752 co-relation queries the response was YES. [2025-03-17 10:44:10,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66858 conditions, 55314 events. 8668/55314 cut-off events. For 3752/3752 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 854166 event pairs, 6804 based on Foata normal form. 12259/61706 useless extension candidates. Maximal degree in co-relation 55673. Up to 9605 conditions per place. [2025-03-17 10:44:10,609 INFO L140 encePairwiseOnDemand]: 475/560 looper letters, 28 selfloop transitions, 0 changer transitions 0/444 dead transitions. [2025-03-17 10:44:10,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 444 transitions, 972 flow [2025-03-17 10:44:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:44:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:44:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 983 transitions. [2025-03-17 10:44:10,612 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8776785714285714 [2025-03-17 10:44:10,612 INFO L175 Difference]: Start difference. First operand has 517 places, 560 transitions, 1148 flow. Second operand 2 states and 983 transitions. [2025-03-17 10:44:10,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 444 transitions, 972 flow [2025-03-17 10:44:10,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 444 transitions, 966 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-17 10:44:10,618 INFO L231 Difference]: Finished difference. Result has 438 places, 444 transitions, 910 flow [2025-03-17 10:44:10,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=560, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=910, PETRI_PLACES=438, PETRI_TRANSITIONS=444} [2025-03-17 10:44:10,619 INFO L279 CegarLoopForPetriNet]: 517 programPoint places, -79 predicate places. [2025-03-17 10:44:10,619 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 444 transitions, 910 flow [2025-03-17 10:44:10,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 436.0) internal successors, (872), 2 states have internal predecessors, (872), 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) [2025-03-17 10:44:10,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:10,620 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:44:10,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 10:44:10,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err13ASSERT_VIOLATIONDATA_RACE === [thr1Err15ASSERT_VIOLATIONDATA_RACE, thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE (and 77 more)] === [2025-03-17 10:44:10,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1796501569, now seen corresponding path program 1 times [2025-03-17 10:44:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:10,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385846564] [2025-03-17 10:44:10,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:10,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:10,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 10:44:10,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 10:44:10,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:10,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:44:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:44:10,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:44:10,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385846564] [2025-03-17 10:44:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385846564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:44:10,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:44:10,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:44:10,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423000168] [2025-03-17 10:44:10,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:44:10,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:44:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:44:10,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:44:10,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:44:10,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 560 [2025-03-17 10:44:10,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 444 transitions, 910 flow. Second operand has 3 states, 3 states have (on average 420.3333333333333) internal successors, (1261), 3 states have internal predecessors, (1261), 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) [2025-03-17 10:44:10,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:44:10,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 560 [2025-03-17 10:44:10,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand