./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:46:31,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:46:31,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:46:31,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:46:31,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:46:31,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:46:31,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:46:31,385 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:46:31,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:46:31,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:46:31,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:46:31,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:46:31,389 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:46:31,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:46:31,391 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:46:31,391 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:46:31,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:46:31,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:46:31,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:46:31,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:46:31,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:46:31,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:46:31,392 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:46:31,393 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:46:31,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:46:31,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:46:31,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:46:31,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:46:31,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:46:31,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:46:31,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:46:31,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:46:31,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:46:31,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:46:31,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:46:31,396 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fad6244fcf6eaf8307cc493ab8f193eacc838ad9166f53316e6259a46f1eed1 [2024-10-11 16:46:31,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:46:31,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:46:31,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:46:31,614 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:46:31,615 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:46:31,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i [2024-10-11 16:46:32,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:46:33,017 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:46:33,017 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc-pthread.i [2024-10-11 16:46:33,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a6d3d03a3/2e80e3b90bcd4f54bfa3cfd498b6b91d/FLAGf00e4c52a [2024-10-11 16:46:33,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a6d3d03a3/2e80e3b90bcd4f54bfa3cfd498b6b91d [2024-10-11 16:46:33,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:46:33,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:46:33,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:46:33,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:46:33,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:46:33,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3286cc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33, skipping insertion in model container [2024-10-11 16:46:33,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:46:33,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:46:33,391 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:46:33,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:46:33,462 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:46:33,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33 WrapperNode [2024-10-11 16:46:33,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:46:33,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:46:33,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:46:33,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:46:33,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,500 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2024-10-11 16:46:33,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:46:33,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:46:33,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:46:33,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:46:33,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,515 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:46:33,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:46:33,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:46:33,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:46:33,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (1/1) ... [2024-10-11 16:46:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:46:33,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:46:33,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:46:33,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:46:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 16:46:33,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:46:33,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:46:33,596 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 16:46:33,684 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:46:33,685 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:46:33,789 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:46:33,789 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:46:33,823 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:46:33,823 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 16:46:33,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:46:33 BoogieIcfgContainer [2024-10-11 16:46:33,823 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:46:33,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:46:33,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:46:33,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:46:33,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:46:33" (1/3) ... [2024-10-11 16:46:33,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f2f387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:46:33, skipping insertion in model container [2024-10-11 16:46:33,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:46:33" (2/3) ... [2024-10-11 16:46:33,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f2f387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:46:33, skipping insertion in model container [2024-10-11 16:46:33,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:46:33" (3/3) ... [2024-10-11 16:46:33,833 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2024-10-11 16:46:33,845 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:46:33,845 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-11 16:46:33,845 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:46:33,877 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:46:33,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 54 transitions, 112 flow [2024-10-11 16:46:33,932 INFO L124 PetriNetUnfolderBase]: 3/63 cut-off events. [2024-10-11 16:46:33,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:46:33,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 35. Up to 4 conditions per place. [2024-10-11 16:46:33,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 54 transitions, 112 flow [2024-10-11 16:46:33,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 54 transitions, 112 flow [2024-10-11 16:46:33,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:46:33,961 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;@2cbbd3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:46:33,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-11 16:46:33,975 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:46:33,975 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-10-11 16:46:33,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:46:33,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:33,976 INFO L204 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] [2024-10-11 16:46:33,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-11 16:46:33,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -71247770, now seen corresponding path program 1 times [2024-10-11 16:46:33,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:33,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799188581] [2024-10-11 16:46:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:33,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:46:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:46:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:46:34,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799188581] [2024-10-11 16:46:34,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799188581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:46:34,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:46:34,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:46:34,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868712744] [2024-10-11 16:46:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:46:34,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:46:34,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:46:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:46:34,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:46:34,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 54 [2024-10-11 16:46:34,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2024-10-11 16:46:34,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:46:34,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 54 [2024-10-11 16:46:34,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:46:34,259 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-11 16:46:34,259 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:46:34,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 49 events. 1/49 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 11/59 useless extension candidates. Maximal degree in co-relation 35. Up to 6 conditions per place. [2024-10-11 16:46:34,261 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 7 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-10-11 16:46:34,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 114 flow [2024-10-11 16:46:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:46:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:46:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-10-11 16:46:34,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8148148148148148 [2024-10-11 16:46:34,271 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 112 flow. Second operand 3 states and 132 transitions. [2024-10-11 16:46:34,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 114 flow [2024-10-11 16:46:34,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:46:34,275 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 100 flow [2024-10-11 16:46:34,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-11 16:46:34,280 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2024-10-11 16:46:34,280 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 100 flow [2024-10-11 16:46:34,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2024-10-11 16:46:34,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:34,280 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:46:34,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:46:34,281 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-11 16:46:34,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:34,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1075719631, now seen corresponding path program 1 times [2024-10-11 16:46:34,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:34,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490354505] [2024-10-11 16:46:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:34,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:34,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:46:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:34,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:46:34,336 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:46:34,339 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-11 16:46:34,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-11 16:46:34,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-11 16:46:34,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-11 16:46:34,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-11 16:46:34,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-11 16:46:34,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-11 16:46:34,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-11 16:46:34,343 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-11 16:46:34,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:46:34,343 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:46:34,345 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:46:34,346 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:46:34,367 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:46:34,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2024-10-11 16:46:34,384 INFO L124 PetriNetUnfolderBase]: 5/99 cut-off events. [2024-10-11 16:46:34,384 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:46:34,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 99 events. 5/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 184 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 64. Up to 6 conditions per place. [2024-10-11 16:46:34,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 168 flow [2024-10-11 16:46:34,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 168 flow [2024-10-11 16:46:34,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:46:34,388 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;@2cbbd3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:46:34,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-11 16:46:34,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:46:34,407 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-10-11 16:46:34,407 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:46:34,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:34,407 INFO L204 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] [2024-10-11 16:46:34,408 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-11 16:46:34,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash 284856766, now seen corresponding path program 1 times [2024-10-11 16:46:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840046310] [2024-10-11 16:46:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:46:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:46:34,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:46:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840046310] [2024-10-11 16:46:34,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840046310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:46:34,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:46:34,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:46:34,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769320279] [2024-10-11 16:46:34,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:46:34,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:46:34,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:46:34,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:46:34,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:46:34,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 79 [2024-10-11 16:46:34,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-10-11 16:46:34,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:46:34,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 79 [2024-10-11 16:46:34,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:46:34,584 INFO L124 PetriNetUnfolderBase]: 129/457 cut-off events. [2024-10-11 16:46:34,585 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-11 16:46:34,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 457 events. 129/457 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2437 event pairs, 48 based on Foata normal form. 146/577 useless extension candidates. Maximal degree in co-relation 499. Up to 184 conditions per place. [2024-10-11 16:46:34,589 INFO L140 encePairwiseOnDemand]: 57/79 looper letters, 31 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-10-11 16:46:34,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 279 flow [2024-10-11 16:46:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:46:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:46:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 206 transitions. [2024-10-11 16:46:34,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.869198312236287 [2024-10-11 16:46:34,592 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 168 flow. Second operand 3 states and 206 transitions. [2024-10-11 16:46:34,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 279 flow [2024-10-11 16:46:34,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 89 transitions, 279 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:46:34,596 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 254 flow [2024-10-11 16:46:34,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-10-11 16:46:34,597 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, -4 predicate places. [2024-10-11 16:46:34,597 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 254 flow [2024-10-11 16:46:34,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-10-11 16:46:34,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:34,598 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:46:34,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:46:34,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-11 16:46:34,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:34,599 INFO L85 PathProgramCache]: Analyzing trace with hash 517925977, now seen corresponding path program 1 times [2024-10-11 16:46:34,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265590231] [2024-10-11 16:46:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:34,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:46:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:34,645 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:46:34,648 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:46:34,648 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-11 16:46:34,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-11 16:46:34,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-11 16:46:34,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-11 16:46:34,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-11 16:46:34,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-11 16:46:34,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-11 16:46:34,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-11 16:46:34,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-11 16:46:34,650 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-11 16:46:34,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-11 16:46:34,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-11 16:46:34,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-11 16:46:34,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:46:34,653 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:46:34,654 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:46:34,654 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:46:34,681 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:46:34,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 104 transitions, 226 flow [2024-10-11 16:46:34,699 INFO L124 PetriNetUnfolderBase]: 7/135 cut-off events. [2024-10-11 16:46:34,700 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:46:34,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 7/135 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 304 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 103. Up to 8 conditions per place. [2024-10-11 16:46:34,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 104 transitions, 226 flow [2024-10-11 16:46:34,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 104 transitions, 226 flow [2024-10-11 16:46:34,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:46:34,705 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;@2cbbd3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:46:34,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-11 16:46:34,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:46:34,709 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-10-11 16:46:34,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:46:34,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:34,709 INFO L204 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] [2024-10-11 16:46:34,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-11 16:46:34,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:34,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1940198870, now seen corresponding path program 1 times [2024-10-11 16:46:34,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:34,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093294826] [2024-10-11 16:46:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:34,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:46:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:46:34,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:46:34,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093294826] [2024-10-11 16:46:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093294826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:46:34,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:46:34,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:46:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546808538] [2024-10-11 16:46:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:46:34,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:46:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:46:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:46:34,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:46:34,778 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 104 [2024-10-11 16:46:34,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2024-10-11 16:46:34,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:46:34,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 104 [2024-10-11 16:46:34,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:46:35,516 INFO L124 PetriNetUnfolderBase]: 3447/7483 cut-off events. [2024-10-11 16:46:35,516 INFO L125 PetriNetUnfolderBase]: For 859/859 co-relation queries the response was YES. [2024-10-11 16:46:35,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13392 conditions, 7483 events. 3447/7483 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 64624 event pairs, 1299 based on Foata normal form. 2061/9070 useless extension candidates. Maximal degree in co-relation 9585. Up to 3764 conditions per place. [2024-10-11 16:46:35,569 INFO L140 encePairwiseOnDemand]: 72/104 looper letters, 47 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-10-11 16:46:35,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 122 transitions, 404 flow [2024-10-11 16:46:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:46:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:46:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-10-11 16:46:35,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8557692307692307 [2024-10-11 16:46:35,573 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 226 flow. Second operand 3 states and 267 transitions. [2024-10-11 16:46:35,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 122 transitions, 404 flow [2024-10-11 16:46:35,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 122 transitions, 400 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-11 16:46:35,579 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 358 flow [2024-10-11 16:46:35,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2024-10-11 16:46:35,582 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -6 predicate places. [2024-10-11 16:46:35,582 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 358 flow [2024-10-11 16:46:35,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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) [2024-10-11 16:46:35,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:35,583 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:46:35,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:46:35,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-11 16:46:35,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1862017339, now seen corresponding path program 1 times [2024-10-11 16:46:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959354105] [2024-10-11 16:46:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:35,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:46:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:35,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:46:35,626 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:46:35,626 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-11 16:46:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-11 16:46:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-11 16:46:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-11 16:46:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-11 16:46:35,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:46:35,629 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 16:46:35,630 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:46:35,630 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 16:46:35,648 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:46:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 129 transitions, 286 flow [2024-10-11 16:46:35,661 INFO L124 PetriNetUnfolderBase]: 9/171 cut-off events. [2024-10-11 16:46:35,661 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 16:46:35,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 171 events. 9/171 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 432 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 143. Up to 10 conditions per place. [2024-10-11 16:46:35,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 129 transitions, 286 flow [2024-10-11 16:46:35,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 129 transitions, 286 flow [2024-10-11 16:46:35,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:46:35,665 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;@2cbbd3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:46:35,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-11 16:46:35,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:46:35,667 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-10-11 16:46:35,667 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:46:35,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:35,668 INFO L204 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] [2024-10-11 16:46:35,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 16:46:35,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2019817134, now seen corresponding path program 1 times [2024-10-11 16:46:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:35,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065333856] [2024-10-11 16:46:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:35,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:46:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:46:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:46:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065333856] [2024-10-11 16:46:35,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065333856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:46:35,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:46:35,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:46:35,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483185080] [2024-10-11 16:46:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:46:35,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:46:35,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:46:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:46:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:46:35,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 129 [2024-10-11 16:46:35,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 129 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2024-10-11 16:46:35,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:46:35,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 129 [2024-10-11 16:46:35,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:46:44,979 INFO L124 PetriNetUnfolderBase]: 69759/122186 cut-off events. [2024-10-11 16:46:44,980 INFO L125 PetriNetUnfolderBase]: For 20033/20033 co-relation queries the response was YES. [2024-10-11 16:46:45,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228092 conditions, 122186 events. 69759/122186 cut-off events. For 20033/20033 co-relation queries the response was YES. Maximal size of possible extension queue 4663. Compared 1274169 event pairs, 29205 based on Foata normal form. 28337/142057 useless extension candidates. Maximal degree in co-relation 201381. Up to 66562 conditions per place. [2024-10-11 16:46:46,151 INFO L140 encePairwiseOnDemand]: 87/129 looper letters, 63 selfloop transitions, 24 changer transitions 0/155 dead transitions. [2024-10-11 16:46:46,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 155 transitions, 533 flow [2024-10-11 16:46:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:46:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:46:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2024-10-11 16:46:46,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8475452196382429 [2024-10-11 16:46:46,153 INFO L175 Difference]: Start difference. First operand has 133 places, 129 transitions, 286 flow. Second operand 3 states and 328 transitions. [2024-10-11 16:46:46,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 155 transitions, 533 flow [2024-10-11 16:46:46,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 155 transitions, 521 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-11 16:46:46,164 INFO L231 Difference]: Finished difference. Result has 125 places, 140 transitions, 462 flow [2024-10-11 16:46:46,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=125, PETRI_TRANSITIONS=140} [2024-10-11 16:46:46,165 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, -8 predicate places. [2024-10-11 16:46:46,165 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 140 transitions, 462 flow [2024-10-11 16:46:46,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2024-10-11 16:46:46,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:46,166 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:46:46,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:46:46,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 16:46:46,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -68997869, now seen corresponding path program 1 times [2024-10-11 16:46:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923584314] [2024-10-11 16:46:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:46:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:46:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:46:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923584314] [2024-10-11 16:46:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923584314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:46:46,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:46:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:46:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080305501] [2024-10-11 16:46:46,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:46:46,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:46:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:46:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:46:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:46:46,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 129 [2024-10-11 16:46:46,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 140 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:46:46,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:46:46,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 129 [2024-10-11 16:46:46,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:46:47,116 INFO L124 PetriNetUnfolderBase]: 2794/8916 cut-off events. [2024-10-11 16:46:47,117 INFO L125 PetriNetUnfolderBase]: For 4524/4532 co-relation queries the response was YES. [2024-10-11 16:46:47,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19008 conditions, 8916 events. 2794/8916 cut-off events. For 4524/4532 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 92194 event pairs, 865 based on Foata normal form. 830/9536 useless extension candidates. Maximal degree in co-relation 18893. Up to 3487 conditions per place. [2024-10-11 16:46:47,173 INFO L140 encePairwiseOnDemand]: 117/129 looper letters, 28 selfloop transitions, 12 changer transitions 0/127 dead transitions. [2024-10-11 16:46:47,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 127 transitions, 483 flow [2024-10-11 16:46:47,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:46:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:46:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2024-10-11 16:46:47,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8217054263565892 [2024-10-11 16:46:47,175 INFO L175 Difference]: Start difference. First operand has 125 places, 140 transitions, 462 flow. Second operand 3 states and 318 transitions. [2024-10-11 16:46:47,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 127 transitions, 483 flow [2024-10-11 16:46:47,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 127 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 16:46:47,181 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 342 flow [2024-10-11 16:46:47,181 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-10-11 16:46:47,182 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, -16 predicate places. [2024-10-11 16:46:47,182 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 342 flow [2024-10-11 16:46:47,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:46:47,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:47,182 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:46:47,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:46:47,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-11 16:46:47,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -944418552, now seen corresponding path program 1 times [2024-10-11 16:46:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:47,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13521474] [2024-10-11 16:46:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:47,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:46:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:46:47,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:46:47,211 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:46:47,212 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-11 16:46:47,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-10-11 16:46:47,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-10-11 16:46:47,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-10-11 16:46:47,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-10-11 16:46:47,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-10-11 16:46:47,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-10-11 16:46:47,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-10-11 16:46:47,214 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-10-11 16:46:47,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-10-11 16:46:47,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-10-11 16:46:47,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-10-11 16:46:47,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-10-11 16:46:47,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-10-11 16:46:47,215 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-10-11 16:46:47,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 16:46:47,216 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 16:46:47,216 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:46:47,216 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 16:46:47,246 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:46:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 154 transitions, 348 flow [2024-10-11 16:46:47,264 INFO L124 PetriNetUnfolderBase]: 11/207 cut-off events. [2024-10-11 16:46:47,264 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 16:46:47,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 207 events. 11/207 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 554 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 184. Up to 12 conditions per place. [2024-10-11 16:46:47,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 154 transitions, 348 flow [2024-10-11 16:46:47,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 154 transitions, 348 flow [2024-10-11 16:46:47,267 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:46:47,268 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;@2cbbd3ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:46:47,268 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-11 16:46:47,270 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:46:47,270 INFO L124 PetriNetUnfolderBase]: 2/41 cut-off events. [2024-10-11 16:46:47,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:46:47,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:46:47,270 INFO L204 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] [2024-10-11 16:46:47,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-11 16:46:47,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:46:47,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1606297274, now seen corresponding path program 1 times [2024-10-11 16:46:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:46:47,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836012806] [2024-10-11 16:46:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:46:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:46:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:46:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:46:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:46:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836012806] [2024-10-11 16:46:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836012806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:46:47,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:46:47,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:46:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577724053] [2024-10-11 16:46:47,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:46:47,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:46:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:46:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:46:47,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:46:47,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 154 [2024-10-11 16:46:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 154 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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) [2024-10-11 16:46:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:46:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 154 [2024-10-11 16:46:47,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand