./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/40_barrier_vf.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/40_barrier_vf.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 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:51:10,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:51:10,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:51:10,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:51:10,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:51:10,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:51:10,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:51:10,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:51:10,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:51:10,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:51:10,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:51:10,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:51:10,587 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:51:10,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:51:10,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:51:10,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:51:10,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:51:10,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:51:10,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:51:10,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:51:10,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:51:10,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:51:10,591 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:51:10,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:51:10,591 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:51:10,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:51:10,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:51:10,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:51:10,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:51:10,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:51:10,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:51:10,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:51:10,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:51:10,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:51:10,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:51:10,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:51:10,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:51:10,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:51:10,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:51:10,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:51:10,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:51:10,597 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef73b6b2655059556d731e3a5babc181132142f2417a2cf863165dd8efda84 [2024-10-11 16:51:10,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:51:10,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:51:10,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:51:10,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:51:10,893 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:51:10,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-10-11 16:51:12,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:51:12,609 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:51:12,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-10-11 16:51:12,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1eda1f0eb/da73a6854dbe46d9aebd7d40cd773dc8/FLAG547bc02ef [2024-10-11 16:51:12,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1eda1f0eb/da73a6854dbe46d9aebd7d40cd773dc8 [2024-10-11 16:51:12,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:51:12,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:51:12,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:51:12,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:51:12,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:51:12,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:51:12" (1/1) ... [2024-10-11 16:51:12,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16eea99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:12, skipping insertion in model container [2024-10-11 16:51:12,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:51:12" (1/1) ... [2024-10-11 16:51:12,701 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:51:13,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:51:13,131 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:51:13,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:51:13,226 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:51:13,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13 WrapperNode [2024-10-11 16:51:13,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:51:13,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:51:13,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:51:13,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:51:13,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,272 INFO L138 Inliner]: procedures = 172, calls = 22, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 123 [2024-10-11 16:51:13,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:51:13,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:51:13,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:51:13,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:51:13,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:51:13,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:51:13,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:51:13,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:51:13,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (1/1) ... [2024-10-11 16:51:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:51:13,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:51:13,333 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 16:51:13,335 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 16:51:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:51:13,376 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:51:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 16:51:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:51:13,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:51:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 16:51:13,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:51:13,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:51:13,378 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 16:51:13,483 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:51:13,485 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:51:13,660 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:51:13,660 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:51:13,781 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:51:13,782 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 16:51:13,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:51:13 BoogieIcfgContainer [2024-10-11 16:51:13,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:51:13,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:51:13,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:51:13,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:51:13,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:51:12" (1/3) ... [2024-10-11 16:51:13,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d253cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:51:13, skipping insertion in model container [2024-10-11 16:51:13,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:51:13" (2/3) ... [2024-10-11 16:51:13,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d253cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:51:13, skipping insertion in model container [2024-10-11 16:51:13,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:51:13" (3/3) ... [2024-10-11 16:51:13,794 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2024-10-11 16:51:13,811 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:51:13,811 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-10-11 16:51:13,811 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:51:13,867 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:13,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 77 transitions, 158 flow [2024-10-11 16:51:13,945 INFO L124 PetriNetUnfolderBase]: 5/86 cut-off events. [2024-10-11 16:51:13,947 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:13,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 5/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-10-11 16:51:13,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 77 transitions, 158 flow [2024-10-11 16:51:13,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 77 transitions, 158 flow [2024-10-11 16:51:13,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:13,972 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;@7f068381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:13,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-10-11 16:51:13,981 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:13,982 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-10-11 16:51:13,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:13,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:13,983 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] [2024-10-11 16:51:13,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-11 16:51:13,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 543607268, now seen corresponding path program 1 times [2024-10-11 16:51:14,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:14,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911078168] [2024-10-11 16:51:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:14,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:14,166 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 16:51:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911078168] [2024-10-11 16:51:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911078168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405460102] [2024-10-11 16:51:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:14,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:14,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:14,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:14,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 77 [2024-10-11 16:51:14,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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 16:51:14,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:14,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 77 [2024-10-11 16:51:14,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:14,248 INFO L124 PetriNetUnfolderBase]: 1/58 cut-off events. [2024-10-11 16:51:14,248 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:14,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 58 events. 1/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 12/65 useless extension candidates. Maximal degree in co-relation 47. Up to 9 conditions per place. [2024-10-11 16:51:14,250 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 8 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-10-11 16:51:14,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 128 flow [2024-10-11 16:51:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 128 transitions. [2024-10-11 16:51:14,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8311688311688312 [2024-10-11 16:51:14,262 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 158 flow. Second operand 2 states and 128 transitions. [2024-10-11 16:51:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 128 flow [2024-10-11 16:51:14,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:14,267 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 112 flow [2024-10-11 16:51:14,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-10-11 16:51:14,272 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2024-10-11 16:51:14,273 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 112 flow [2024-10-11 16:51:14,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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 16:51:14,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:14,273 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] [2024-10-11 16:51:14,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:51:14,274 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-11 16:51:14,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1579411417, now seen corresponding path program 1 times [2024-10-11 16:51:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554673858] [2024-10-11 16:51:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:14,356 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 16:51:14,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554673858] [2024-10-11 16:51:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554673858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:14,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:14,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:14,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523689782] [2024-10-11 16:51:14,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:14,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:14,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:14,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:14,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 77 [2024-10-11 16:51:14,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 16:51:14,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:14,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 77 [2024-10-11 16:51:14,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:14,422 INFO L124 PetriNetUnfolderBase]: 0/60 cut-off events. [2024-10-11 16:51:14,422 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:51:14,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 60 events. 0/60 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2024-10-11 16:51:14,423 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 11 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-10-11 16:51:14,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 140 flow [2024-10-11 16:51:14,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-10-11 16:51:14,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.645021645021645 [2024-10-11 16:51:14,425 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 112 flow. Second operand 3 states and 149 transitions. [2024-10-11 16:51:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 140 flow [2024-10-11 16:51:14,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:14,428 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 116 flow [2024-10-11 16:51:14,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-10-11 16:51:14,429 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -19 predicate places. [2024-10-11 16:51:14,429 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 116 flow [2024-10-11 16:51:14,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 16:51:14,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:14,430 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] [2024-10-11 16:51:14,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:51:14,431 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-10-11 16:51:14,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash -10738278, now seen corresponding path program 1 times [2024-10-11 16:51:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:14,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517676714] [2024-10-11 16:51:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:14,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:14,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:14,512 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:14,513 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-10-11 16:51:14,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-10-11 16:51:14,516 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-10-11 16:51:14,516 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-10-11 16:51:14,517 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-10-11 16:51:14,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-10-11 16:51:14,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-10-11 16:51:14,518 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-10-11 16:51:14,519 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-10-11 16:51:14,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-10-11 16:51:14,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-10-11 16:51:14,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-10-11 16:51:14,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-10-11 16:51:14,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-10-11 16:51:14,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-10-11 16:51:14,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-10-11 16:51:14,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-10-11 16:51:14,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-10-11 16:51:14,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-10-11 16:51:14,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-10-11 16:51:14,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-10-11 16:51:14,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-10-11 16:51:14,524 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-10-11 16:51:14,524 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-10-11 16:51:14,526 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-10-11 16:51:14,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-10-11 16:51:14,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-10-11 16:51:14,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-10-11 16:51:14,527 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-10-11 16:51:14,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-10-11 16:51:14,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-10-11 16:51:14,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:51:14,528 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-11 16:51:14,532 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:14,532 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:51:14,568 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:14,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 130 transitions, 270 flow [2024-10-11 16:51:14,621 INFO L124 PetriNetUnfolderBase]: 9/150 cut-off events. [2024-10-11 16:51:14,621 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:51:14,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 150 events. 9/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 368 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 115. Up to 6 conditions per place. [2024-10-11 16:51:14,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 130 transitions, 270 flow [2024-10-11 16:51:14,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 130 transitions, 270 flow [2024-10-11 16:51:14,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:14,629 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;@7f068381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:14,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-11 16:51:14,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:14,658 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-10-11 16:51:14,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:14,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:14,658 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] [2024-10-11 16:51:14,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-10-11 16:51:14,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1461061988, now seen corresponding path program 1 times [2024-10-11 16:51:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017757874] [2024-10-11 16:51:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:14,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:14,714 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 16:51:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017757874] [2024-10-11 16:51:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017757874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128912207] [2024-10-11 16:51:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:14,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:14,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:14,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:14,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:14,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 130 [2024-10-11 16:51:14,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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 16:51:14,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:14,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 130 [2024-10-11 16:51:14,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:14,834 INFO L124 PetriNetUnfolderBase]: 62/332 cut-off events. [2024-10-11 16:51:14,834 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 16:51:14,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 332 events. 62/332 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1623 event pairs, 56 based on Foata normal form. 121/412 useless extension candidates. Maximal degree in co-relation 380. Up to 129 conditions per place. [2024-10-11 16:51:14,838 INFO L140 encePairwiseOnDemand]: 100/130 looper letters, 16 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2024-10-11 16:51:14,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 220 flow [2024-10-11 16:51:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:14,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2024-10-11 16:51:14,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2024-10-11 16:51:14,841 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 270 flow. Second operand 2 states and 210 transitions. [2024-10-11 16:51:14,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 220 flow [2024-10-11 16:51:14,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 89 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:14,843 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 188 flow [2024-10-11 16:51:14,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=188, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2024-10-11 16:51:14,845 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -35 predicate places. [2024-10-11 16:51:14,845 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 188 flow [2024-10-11 16:51:14,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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 16:51:14,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:14,845 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] [2024-10-11 16:51:14,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:51:14,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-10-11 16:51:14,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:14,847 INFO L85 PathProgramCache]: Analyzing trace with hash -373715353, now seen corresponding path program 1 times [2024-10-11 16:51:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:14,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405481766] [2024-10-11 16:51:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:14,918 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 16:51:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:14,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405481766] [2024-10-11 16:51:14,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405481766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:14,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:14,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:14,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067198320] [2024-10-11 16:51:14,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:14,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:14,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:14,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:14,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:14,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 130 [2024-10-11 16:51:14,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 16:51:14,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:14,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 130 [2024-10-11 16:51:14,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:15,138 INFO L124 PetriNetUnfolderBase]: 252/1073 cut-off events. [2024-10-11 16:51:15,138 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-11 16:51:15,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 1073 events. 252/1073 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7480 event pairs, 98 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 1685. Up to 398 conditions per place. [2024-10-11 16:51:15,149 INFO L140 encePairwiseOnDemand]: 114/130 looper letters, 47 selfloop transitions, 12 changer transitions 0/116 dead transitions. [2024-10-11 16:51:15,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 365 flow [2024-10-11 16:51:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2024-10-11 16:51:15,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6692307692307692 [2024-10-11 16:51:15,151 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 188 flow. Second operand 3 states and 261 transitions. [2024-10-11 16:51:15,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 365 flow [2024-10-11 16:51:15,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 116 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:15,155 INFO L231 Difference]: Finished difference. Result has 97 places, 101 transitions, 292 flow [2024-10-11 16:51:15,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=97, PETRI_TRANSITIONS=101} [2024-10-11 16:51:15,156 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -31 predicate places. [2024-10-11 16:51:15,156 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 101 transitions, 292 flow [2024-10-11 16:51:15,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 16:51:15,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:15,156 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] [2024-10-11 16:51:15,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:51:15,156 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-10-11 16:51:15,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1674056529, now seen corresponding path program 1 times [2024-10-11 16:51:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:15,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665139381] [2024-10-11 16:51:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:15,193 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 16:51:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665139381] [2024-10-11 16:51:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665139381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:15,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:15,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056737518] [2024-10-11 16:51:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:15,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:15,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:15,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:15,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:15,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 130 [2024-10-11 16:51:15,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 101 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 16:51:15,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:15,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 130 [2024-10-11 16:51:15,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:15,427 INFO L124 PetriNetUnfolderBase]: 334/1258 cut-off events. [2024-10-11 16:51:15,428 INFO L125 PetriNetUnfolderBase]: For 451/466 co-relation queries the response was YES. [2024-10-11 16:51:15,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 1258 events. 334/1258 cut-off events. For 451/466 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9104 event pairs, 191 based on Foata normal form. 4/1152 useless extension candidates. Maximal degree in co-relation 2447. Up to 644 conditions per place. [2024-10-11 16:51:15,439 INFO L140 encePairwiseOnDemand]: 122/130 looper letters, 44 selfloop transitions, 10 changer transitions 0/117 dead transitions. [2024-10-11 16:51:15,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 117 transitions, 457 flow [2024-10-11 16:51:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2024-10-11 16:51:15,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2024-10-11 16:51:15,441 INFO L175 Difference]: Start difference. First operand has 97 places, 101 transitions, 292 flow. Second operand 3 states and 249 transitions. [2024-10-11 16:51:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 117 transitions, 457 flow [2024-10-11 16:51:15,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 425 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 16:51:15,448 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 354 flow [2024-10-11 16:51:15,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2024-10-11 16:51:15,449 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -29 predicate places. [2024-10-11 16:51:15,450 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 354 flow [2024-10-11 16:51:15,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 16:51:15,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:15,450 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] [2024-10-11 16:51:15,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:51:15,451 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2024-10-11 16:51:15,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:15,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1390293386, now seen corresponding path program 1 times [2024-10-11 16:51:15,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:15,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529964771] [2024-10-11 16:51:15,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:15,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:15,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:15,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:15,480 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:15,480 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-10-11 16:51:15,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2024-10-11 16:51:15,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2024-10-11 16:51:15,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2024-10-11 16:51:15,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2024-10-11 16:51:15,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2024-10-11 16:51:15,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2024-10-11 16:51:15,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2024-10-11 16:51:15,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2024-10-11 16:51:15,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2024-10-11 16:51:15,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2024-10-11 16:51:15,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2024-10-11 16:51:15,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2024-10-11 16:51:15,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2024-10-11 16:51:15,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2024-10-11 16:51:15,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2024-10-11 16:51:15,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2024-10-11 16:51:15,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2024-10-11 16:51:15,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2024-10-11 16:51:15,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2024-10-11 16:51:15,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2024-10-11 16:51:15,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2024-10-11 16:51:15,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2024-10-11 16:51:15,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2024-10-11 16:51:15,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2024-10-11 16:51:15,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2024-10-11 16:51:15,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2024-10-11 16:51:15,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2024-10-11 16:51:15,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2024-10-11 16:51:15,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2024-10-11 16:51:15,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2024-10-11 16:51:15,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2024-10-11 16:51:15,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2024-10-11 16:51:15,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2024-10-11 16:51:15,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2024-10-11 16:51:15,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2024-10-11 16:51:15,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2024-10-11 16:51:15,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2024-10-11 16:51:15,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2024-10-11 16:51:15,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2024-10-11 16:51:15,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2024-10-11 16:51:15,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2024-10-11 16:51:15,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2024-10-11 16:51:15,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2024-10-11 16:51:15,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2024-10-11 16:51:15,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2024-10-11 16:51:15,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:51:15,488 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-11 16:51:15,489 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:15,489 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:51:15,528 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:15,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 183 transitions, 384 flow [2024-10-11 16:51:15,561 INFO L124 PetriNetUnfolderBase]: 13/214 cut-off events. [2024-10-11 16:51:15,561 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:51:15,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 214 events. 13/214 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 684 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 167. Up to 8 conditions per place. [2024-10-11 16:51:15,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 183 transitions, 384 flow [2024-10-11 16:51:15,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 183 transitions, 384 flow [2024-10-11 16:51:15,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:15,571 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;@7f068381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:15,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-10-11 16:51:15,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:15,573 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-10-11 16:51:15,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:15,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:15,574 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] [2024-10-11 16:51:15,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:51:15,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1892858224, now seen corresponding path program 1 times [2024-10-11 16:51:15,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:15,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030002401] [2024-10-11 16:51:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:15,606 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 16:51:15,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:15,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030002401] [2024-10-11 16:51:15,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030002401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:15,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:15,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:15,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380937144] [2024-10-11 16:51:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:15,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:15,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 183 [2024-10-11 16:51:15,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 183 transitions, 384 flow. Second operand has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 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 16:51:15,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:15,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 183 [2024-10-11 16:51:15,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:15,977 INFO L124 PetriNetUnfolderBase]: 979/2546 cut-off events. [2024-10-11 16:51:15,978 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-10-11 16:51:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 2546 events. 979/2546 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20579 event pairs, 952 based on Foata normal form. 1160/3432 useless extension candidates. Maximal degree in co-relation 3498. Up to 1537 conditions per place. [2024-10-11 16:51:16,007 INFO L140 encePairwiseOnDemand]: 139/183 looper letters, 24 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2024-10-11 16:51:16,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 124 transitions, 314 flow [2024-10-11 16:51:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 292 transitions. [2024-10-11 16:51:16,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7978142076502732 [2024-10-11 16:51:16,009 INFO L175 Difference]: Start difference. First operand has 180 places, 183 transitions, 384 flow. Second operand 2 states and 292 transitions. [2024-10-11 16:51:16,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 124 transitions, 314 flow [2024-10-11 16:51:16,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 312 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:16,012 INFO L231 Difference]: Finished difference. Result has 129 places, 124 transitions, 264 flow [2024-10-11 16:51:16,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=264, PETRI_PLACES=129, PETRI_TRANSITIONS=124} [2024-10-11 16:51:16,013 INFO L277 CegarLoopForPetriNet]: 180 programPoint places, -51 predicate places. [2024-10-11 16:51:16,013 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 124 transitions, 264 flow [2024-10-11 16:51:16,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 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 16:51:16,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:16,014 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] [2024-10-11 16:51:16,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 16:51:16,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:51:16,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:16,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2029354413, now seen corresponding path program 1 times [2024-10-11 16:51:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:16,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369838992] [2024-10-11 16:51:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:16,074 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 16:51:16,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:16,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369838992] [2024-10-11 16:51:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369838992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:16,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393245391] [2024-10-11 16:51:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:16,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:16,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 183 [2024-10-11 16:51:16,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 16:51:16,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:16,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 183 [2024-10-11 16:51:16,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:19,144 INFO L124 PetriNetUnfolderBase]: 9813/24595 cut-off events. [2024-10-11 16:51:19,146 INFO L125 PetriNetUnfolderBase]: For 955/955 co-relation queries the response was YES. [2024-10-11 16:51:19,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41194 conditions, 24595 events. 9813/24595 cut-off events. For 955/955 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 269293 event pairs, 4399 based on Foata normal form. 0/21996 useless extension candidates. Maximal degree in co-relation 41188. Up to 10504 conditions per place. [2024-10-11 16:51:19,381 INFO L140 encePairwiseOnDemand]: 159/183 looper letters, 71 selfloop transitions, 18 changer transitions 0/165 dead transitions. [2024-10-11 16:51:19,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 165 transitions, 534 flow [2024-10-11 16:51:19,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2024-10-11 16:51:19,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6539162112932605 [2024-10-11 16:51:19,384 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 264 flow. Second operand 3 states and 359 transitions. [2024-10-11 16:51:19,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 165 transitions, 534 flow [2024-10-11 16:51:19,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 165 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:19,388 INFO L231 Difference]: Finished difference. Result has 133 places, 142 transitions, 420 flow [2024-10-11 16:51:19,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=420, PETRI_PLACES=133, PETRI_TRANSITIONS=142} [2024-10-11 16:51:19,391 INFO L277 CegarLoopForPetriNet]: 180 programPoint places, -47 predicate places. [2024-10-11 16:51:19,391 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 142 transitions, 420 flow [2024-10-11 16:51:19,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 16:51:19,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:19,392 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] [2024-10-11 16:51:19,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 16:51:19,392 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:51:19,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -550013476, now seen corresponding path program 1 times [2024-10-11 16:51:19,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:19,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555013535] [2024-10-11 16:51:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:19,421 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 16:51:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:19,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555013535] [2024-10-11 16:51:19,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555013535] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:19,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701644927] [2024-10-11 16:51:19,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:19,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:19,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:19,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 183 [2024-10-11 16:51:19,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 142 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 16:51:19,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:19,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 183 [2024-10-11 16:51:19,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:22,796 INFO L124 PetriNetUnfolderBase]: 12917/30356 cut-off events. [2024-10-11 16:51:22,797 INFO L125 PetriNetUnfolderBase]: For 13607/14216 co-relation queries the response was YES. [2024-10-11 16:51:22,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63466 conditions, 30356 events. 12917/30356 cut-off events. For 13607/14216 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 333656 event pairs, 7730 based on Foata normal form. 62/27724 useless extension candidates. Maximal degree in co-relation 63458. Up to 18033 conditions per place. [2024-10-11 16:51:23,091 INFO L140 encePairwiseOnDemand]: 171/183 looper letters, 68 selfloop transitions, 20 changer transitions 0/176 dead transitions. [2024-10-11 16:51:23,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 176 transitions, 722 flow [2024-10-11 16:51:23,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2024-10-11 16:51:23,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2024-10-11 16:51:23,094 INFO L175 Difference]: Start difference. First operand has 133 places, 142 transitions, 420 flow. Second operand 3 states and 351 transitions. [2024-10-11 16:51:23,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 176 transitions, 722 flow [2024-10-11 16:51:23,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 176 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 16:51:23,122 INFO L231 Difference]: Finished difference. Result has 135 places, 160 transitions, 570 flow [2024-10-11 16:51:23,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=570, PETRI_PLACES=135, PETRI_TRANSITIONS=160} [2024-10-11 16:51:23,123 INFO L277 CegarLoopForPetriNet]: 180 programPoint places, -45 predicate places. [2024-10-11 16:51:23,125 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 160 transitions, 570 flow [2024-10-11 16:51:23,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 16:51:23,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:23,126 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] [2024-10-11 16:51:23,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:51:23,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:51:23,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -929909567, now seen corresponding path program 1 times [2024-10-11 16:51:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:23,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004505910] [2024-10-11 16:51:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:23,173 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 16:51:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:23,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004505910] [2024-10-11 16:51:23,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004505910] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:23,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:23,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453606678] [2024-10-11 16:51:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:23,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:23,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:23,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:23,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 183 [2024-10-11 16:51:23,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 160 transitions, 570 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 16:51:23,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:23,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 183 [2024-10-11 16:51:23,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:26,210 INFO L124 PetriNetUnfolderBase]: 15412/36113 cut-off events. [2024-10-11 16:51:26,210 INFO L125 PetriNetUnfolderBase]: For 21622/22404 co-relation queries the response was YES. [2024-10-11 16:51:26,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78777 conditions, 36113 events. 15412/36113 cut-off events. For 21622/22404 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 403944 event pairs, 8223 based on Foata normal form. 62/32470 useless extension candidates. Maximal degree in co-relation 78768. Up to 21156 conditions per place. [2024-10-11 16:51:26,715 INFO L140 encePairwiseOnDemand]: 171/183 looper letters, 81 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2024-10-11 16:51:26,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 199 transitions, 963 flow [2024-10-11 16:51:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2024-10-11 16:51:26,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375227686703097 [2024-10-11 16:51:26,721 INFO L175 Difference]: Start difference. First operand has 135 places, 160 transitions, 570 flow. Second operand 3 states and 350 transitions. [2024-10-11 16:51:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 199 transitions, 963 flow [2024-10-11 16:51:26,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 199 transitions, 907 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 16:51:26,790 INFO L231 Difference]: Finished difference. Result has 137 places, 184 transitions, 816 flow [2024-10-11 16:51:26,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=816, PETRI_PLACES=137, PETRI_TRANSITIONS=184} [2024-10-11 16:51:26,792 INFO L277 CegarLoopForPetriNet]: 180 programPoint places, -43 predicate places. [2024-10-11 16:51:26,793 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 184 transitions, 816 flow [2024-10-11 16:51:26,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 16:51:26,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:26,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:51:26,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 16:51:26,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:51:26,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1260354058, now seen corresponding path program 1 times [2024-10-11 16:51:26,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273516986] [2024-10-11 16:51:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:26,837 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 16:51:26,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:26,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273516986] [2024-10-11 16:51:26,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273516986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169277190] [2024-10-11 16:51:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:26,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:26,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 183 [2024-10-11 16:51:26,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 184 transitions, 816 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 16:51:26,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:26,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 183 [2024-10-11 16:51:26,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:30,435 INFO L124 PetriNetUnfolderBase]: 17528/39703 cut-off events. [2024-10-11 16:51:30,435 INFO L125 PetriNetUnfolderBase]: For 46498/47646 co-relation queries the response was YES. [2024-10-11 16:51:30,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96680 conditions, 39703 events. 17528/39703 cut-off events. For 46498/47646 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 440826 event pairs, 8696 based on Foata normal form. 64/35337 useless extension candidates. Maximal degree in co-relation 96670. Up to 23728 conditions per place. [2024-10-11 16:51:30,831 INFO L140 encePairwiseOnDemand]: 171/183 looper letters, 104 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2024-10-11 16:51:30,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 224 transitions, 1306 flow [2024-10-11 16:51:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:51:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:51:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2024-10-11 16:51:30,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.639344262295082 [2024-10-11 16:51:30,833 INFO L175 Difference]: Start difference. First operand has 137 places, 184 transitions, 816 flow. Second operand 3 states and 351 transitions. [2024-10-11 16:51:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 224 transitions, 1306 flow [2024-10-11 16:51:30,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 224 transitions, 1234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 16:51:30,908 INFO L231 Difference]: Finished difference. Result has 139 places, 208 transitions, 1090 flow [2024-10-11 16:51:30,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1090, PETRI_PLACES=139, PETRI_TRANSITIONS=208} [2024-10-11 16:51:30,909 INFO L277 CegarLoopForPetriNet]: 180 programPoint places, -41 predicate places. [2024-10-11 16:51:30,909 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 208 transitions, 1090 flow [2024-10-11 16:51:30,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 16:51:30,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:30,910 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] [2024-10-11 16:51:30,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:51:30,910 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2024-10-11 16:51:30,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:30,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1804649831, now seen corresponding path program 1 times [2024-10-11 16:51:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:30,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505644048] [2024-10-11 16:51:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:30,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:51:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:51:30,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:51:30,940 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:51:30,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-10-11 16:51:30,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2024-10-11 16:51:30,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2024-10-11 16:51:30,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2024-10-11 16:51:30,943 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2024-10-11 16:51:30,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2024-10-11 16:51:30,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2024-10-11 16:51:30,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2024-10-11 16:51:30,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2024-10-11 16:51:30,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2024-10-11 16:51:30,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2024-10-11 16:51:30,945 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2024-10-11 16:51:30,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2024-10-11 16:51:30,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2024-10-11 16:51:30,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2024-10-11 16:51:30,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2024-10-11 16:51:30,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2024-10-11 16:51:30,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2024-10-11 16:51:30,947 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2024-10-11 16:51:30,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2024-10-11 16:51:30,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2024-10-11 16:51:30,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2024-10-11 16:51:30,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2024-10-11 16:51:30,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2024-10-11 16:51:30,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 16:51:30,948 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-11 16:51:30,949 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:51:30,949 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 16:51:30,993 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:51:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 236 transitions, 500 flow [2024-10-11 16:51:31,223 INFO L124 PetriNetUnfolderBase]: 17/278 cut-off events. [2024-10-11 16:51:31,223 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 16:51:31,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 278 events. 17/278 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1000 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 222. Up to 10 conditions per place. [2024-10-11 16:51:31,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 236 transitions, 500 flow [2024-10-11 16:51:31,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 236 transitions, 500 flow [2024-10-11 16:51:31,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:51:31,231 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;@7f068381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:51:31,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-10-11 16:51:31,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:51:31,232 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-10-11 16:51:31,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:51:31,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:31,233 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] [2024-10-11 16:51:31,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2024-10-11 16:51:31,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1839099248, now seen corresponding path program 1 times [2024-10-11 16:51:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063370613] [2024-10-11 16:51:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:31,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:31,254 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 16:51:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063370613] [2024-10-11 16:51:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063370613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:31,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 16:51:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935943600] [2024-10-11 16:51:31,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:31,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:51:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:51:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:51:31,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 236 [2024-10-11 16:51:31,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 236 transitions, 500 flow. Second operand has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 16:51:31,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:31,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 236 [2024-10-11 16:51:31,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:51:33,490 INFO L124 PetriNetUnfolderBase]: 11816/22152 cut-off events. [2024-10-11 16:51:33,491 INFO L125 PetriNetUnfolderBase]: For 5535/5535 co-relation queries the response was YES. [2024-10-11 16:51:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41384 conditions, 22152 events. 11816/22152 cut-off events. For 5535/5535 co-relation queries the response was YES. Maximal size of possible extension queue 1221. Compared 212327 event pairs, 11704 based on Foata normal form. 10852/31112 useless extension candidates. Maximal degree in co-relation 33436. Up to 16385 conditions per place. [2024-10-11 16:51:33,649 INFO L140 encePairwiseOnDemand]: 178/236 looper letters, 32 selfloop transitions, 0 changer transitions 0/159 dead transitions. [2024-10-11 16:51:33,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 410 flow [2024-10-11 16:51:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:51:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 16:51:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 374 transitions. [2024-10-11 16:51:33,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7923728813559322 [2024-10-11 16:51:33,650 INFO L175 Difference]: Start difference. First operand has 232 places, 236 transitions, 500 flow. Second operand 2 states and 374 transitions. [2024-10-11 16:51:33,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 410 flow [2024-10-11 16:51:33,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 159 transitions, 404 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 16:51:33,653 INFO L231 Difference]: Finished difference. Result has 165 places, 159 transitions, 340 flow [2024-10-11 16:51:33,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=340, PETRI_PLACES=165, PETRI_TRANSITIONS=159} [2024-10-11 16:51:33,654 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, -67 predicate places. [2024-10-11 16:51:33,654 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 159 transitions, 340 flow [2024-10-11 16:51:33,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 16:51:33,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:51:33,655 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] [2024-10-11 16:51:33,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 16:51:33,655 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2024-10-11 16:51:33,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:51:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2142853715, now seen corresponding path program 1 times [2024-10-11 16:51:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:51:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557219267] [2024-10-11 16:51:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:51:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:51:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:51:33,679 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 16:51:33,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:51:33,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557219267] [2024-10-11 16:51:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557219267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:51:33,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:51:33,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:51:33,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566402681] [2024-10-11 16:51:33,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:51:33,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:51:33,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:51:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:51:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:51:33,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 236 [2024-10-11 16:51:33,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 159 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 16:51:33,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:51:33,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 236 [2024-10-11 16:51:33,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand