./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-deagle/floating_read-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/floating_read-25.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 778e3ae04d32637f959b85d1a08971a3e61432e093e04b2798423806241a3f5a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 10:01:40,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 10:01:40,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 10:01:40,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 10:01:40,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 10:01:40,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 10:01:40,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 10:01:40,659 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 10:01:40,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 10:01:40,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 10:01:40,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 10:01:40,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 10:01:40,662 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 10:01:40,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 10:01:40,664 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 10:01:40,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 10:01:40,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 10:01:40,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 10:01:40,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 10:01:40,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 10:01:40,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 10:01:40,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 10:01:40,668 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 10:01:40,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 10:01:40,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 10:01:40,669 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 10:01:40,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 10:01:40,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 10:01:40,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 10:01:40,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 10:01:40,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 10:01:40,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:01:40,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 10:01:40,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 10:01:40,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 10:01:40,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 10:01:40,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 10:01:40,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 10:01:40,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 10:01:40,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 10:01:40,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 10:01:40,673 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 778e3ae04d32637f959b85d1a08971a3e61432e093e04b2798423806241a3f5a [2024-10-13 10:01:40,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 10:01:40,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 10:01:40,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 10:01:40,972 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 10:01:40,973 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 10:01:40,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/floating_read-25.i [2024-10-13 10:01:42,512 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 10:01:42,756 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 10:01:42,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/floating_read-25.i [2024-10-13 10:01:42,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9284be745/f51340b6d5204e9fb96b98ae56efa5da/FLAGfb13fb96a [2024-10-13 10:01:43,083 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9284be745/f51340b6d5204e9fb96b98ae56efa5da [2024-10-13 10:01:43,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 10:01:43,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 10:01:43,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 10:01:43,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 10:01:43,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 10:01:43,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12633a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43, skipping insertion in model container [2024-10-13 10:01:43,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,148 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 10:01:43,482 WARN L1659 CHandler]: Possible shadowing of function thread [2024-10-13 10:01:43,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:01:43,512 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 10:01:43,551 WARN L1659 CHandler]: Possible shadowing of function thread [2024-10-13 10:01:43,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:01:43,598 INFO L204 MainTranslator]: Completed translation [2024-10-13 10:01:43,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43 WrapperNode [2024-10-13 10:01:43,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 10:01:43,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 10:01:43,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 10:01:43,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 10:01:43,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,647 INFO L138 Inliner]: procedures = 162, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2024-10-13 10:01:43,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 10:01:43,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 10:01:43,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 10:01:43,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 10:01:43,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 10:01:43,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 10:01:43,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 10:01:43,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 10:01:43,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (1/1) ... [2024-10-13 10:01:43,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:01:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:43,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 10:01:43,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 10:01:43,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 10:01:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 10:01:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 10:01:43,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 10:01:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 10:01:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 10:01:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 10:01:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-13 10:01:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-13 10:01:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 10:01:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 10:01:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 10:01:43,857 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 10:01:44,006 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 10:01:44,009 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 10:01:44,214 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 10:01:44,214 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 10:01:44,255 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 10:01:44,256 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 10:01:44,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:01:44 BoogieIcfgContainer [2024-10-13 10:01:44,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 10:01:44,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 10:01:44,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 10:01:44,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 10:01:44,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:01:43" (1/3) ... [2024-10-13 10:01:44,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2250d670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:01:44, skipping insertion in model container [2024-10-13 10:01:44,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:01:43" (2/3) ... [2024-10-13 10:01:44,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2250d670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:01:44, skipping insertion in model container [2024-10-13 10:01:44,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:01:44" (3/3) ... [2024-10-13 10:01:44,268 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-25.i [2024-10-13 10:01:44,282 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 10:01:44,283 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-13 10:01:44,283 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 10:01:44,330 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 10:01:44,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 75 transitions, 157 flow [2024-10-13 10:01:44,416 INFO L124 PetriNetUnfolderBase]: 9/119 cut-off events. [2024-10-13 10:01:44,417 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 10:01:44,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 9/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 230 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2024-10-13 10:01:44,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 75 transitions, 157 flow [2024-10-13 10:01:44,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 157 flow [2024-10-13 10:01:44,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:01:44,447 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:01:44,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 10:01:44,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:01:44,453 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:01:44,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:01:44,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:44,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:44,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:01:44,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1413199819, now seen corresponding path program 1 times [2024-10-13 10:01:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:44,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534823565] [2024-10-13 10:01:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:44,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:44,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534823565] [2024-10-13 10:01:44,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534823565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:44,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:44,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:01:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369311759] [2024-10-13 10:01:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:44,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:01:44,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:01:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:01:44,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 75 [2024-10-13 10:01:44,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 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) [2024-10-13 10:01:44,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:44,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 75 [2024-10-13 10:01:44,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:44,748 INFO L124 PetriNetUnfolderBase]: 1/105 cut-off events. [2024-10-13 10:01:44,748 INFO L125 PetriNetUnfolderBase]: For 4/5 co-relation queries the response was YES. [2024-10-13 10:01:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 105 events. 1/105 cut-off events. For 4/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 190 event pairs, 0 based on Foata normal form. 8/101 useless extension candidates. Maximal degree in co-relation 3. Up to 5 conditions per place. [2024-10-13 10:01:44,750 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 4 selfloop transitions, 0 changer transitions 12/67 dead transitions. [2024-10-13 10:01:44,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 149 flow [2024-10-13 10:01:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:01:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:01:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2024-10-13 10:01:44,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.92 [2024-10-13 10:01:44,767 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 157 flow. Second operand 2 states and 138 transitions. [2024-10-13 10:01:44,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 149 flow [2024-10-13 10:01:44,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:44,775 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 117 flow [2024-10-13 10:01:44,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=117, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-10-13 10:01:44,781 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -3 predicate places. [2024-10-13 10:01:44,783 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 117 flow [2024-10-13 10:01:44,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 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) [2024-10-13 10:01:44,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:44,784 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:44,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 10:01:44,785 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:01:44,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash -968080929, now seen corresponding path program 1 times [2024-10-13 10:01:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103780598] [2024-10-13 10:01:44,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:44,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:44,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:44,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:44,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103780598] [2024-10-13 10:01:44,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103780598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:01:44,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346435333] [2024-10-13 10:01:44,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:44,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:44,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:01:44,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2024-10-13 10:01:44,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-10-13 10:01:44,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:44,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2024-10-13 10:01:44,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:45,012 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2024-10-13 10:01:45,012 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 10:01:45,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 106 events. 3/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 0 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 124. Up to 13 conditions per place. [2024-10-13 10:01:45,013 INFO L140 encePairwiseOnDemand]: 72/75 looper letters, 8 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-13 10:01:45,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 139 flow [2024-10-13 10:01:45,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-10-13 10:01:45,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2024-10-13 10:01:45,016 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 117 flow. Second operand 3 states and 185 transitions. [2024-10-13 10:01:45,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 139 flow [2024-10-13 10:01:45,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:45,020 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 125 flow [2024-10-13 10:01:45,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-10-13 10:01:45,022 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2024-10-13 10:01:45,022 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 125 flow [2024-10-13 10:01:45,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-10-13 10:01:45,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:45,023 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] [2024-10-13 10:01:45,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 10:01:45,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:01:45,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 305169799, now seen corresponding path program 1 times [2024-10-13 10:01:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:45,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579641542] [2024-10-13 10:01:45,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:45,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:45,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579641542] [2024-10-13 10:01:45,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579641542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:45,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:45,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:01:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475577889] [2024-10-13 10:01:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:45,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:01:45,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:01:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:45,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 75 [2024-10-13 10:01:45,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 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) [2024-10-13 10:01:45,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:45,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 75 [2024-10-13 10:01:45,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:45,814 INFO L124 PetriNetUnfolderBase]: 12/112 cut-off events. [2024-10-13 10:01:45,814 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 10:01:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 112 events. 12/112 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 255 event pairs, 2 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 175. Up to 32 conditions per place. [2024-10-13 10:01:45,816 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 18 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-10-13 10:01:45,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 177 flow [2024-10-13 10:01:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:01:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:01:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-10-13 10:01:45,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 10:01:45,820 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 125 flow. Second operand 6 states and 300 transitions. [2024-10-13 10:01:45,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 177 flow [2024-10-13 10:01:45,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:01:45,825 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 129 flow [2024-10-13 10:01:45,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-10-13 10:01:45,826 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2024-10-13 10:01:45,826 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 129 flow [2024-10-13 10:01:45,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 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) [2024-10-13 10:01:45,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:45,827 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] [2024-10-13 10:01:45,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 10:01:45,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:01:45,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1477123848, now seen corresponding path program 1 times [2024-10-13 10:01:45,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:45,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926221099] [2024-10-13 10:01:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:45,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:45,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:45,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926221099] [2024-10-13 10:01:45,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926221099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:45,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794210170] [2024-10-13 10:01:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:45,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:45,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:45,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:45,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 10:01:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:46,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 10:01:46,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:01:46,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:01:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794210170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:46,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:01:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 10:01:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873223951] [2024-10-13 10:01:46,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:46,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:46,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:46,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:46,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2024-10-13 10:01:46,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-13 10:01:46,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:46,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2024-10-13 10:01:46,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:46,066 INFO L124 PetriNetUnfolderBase]: 1/103 cut-off events. [2024-10-13 10:01:46,067 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-10-13 10:01:46,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 103 events. 1/103 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2024-10-13 10:01:46,069 INFO L140 encePairwiseOnDemand]: 71/75 looper letters, 7 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2024-10-13 10:01:46,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 158 flow [2024-10-13 10:01:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-10-13 10:01:46,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8622222222222222 [2024-10-13 10:01:46,072 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 129 flow. Second operand 3 states and 194 transitions. [2024-10-13 10:01:46,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 158 flow [2024-10-13 10:01:46,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 148 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:01:46,076 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 141 flow [2024-10-13 10:01:46,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-10-13 10:01:46,077 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2024-10-13 10:01:46,077 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 141 flow [2024-10-13 10:01:46,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2024-10-13 10:01:46,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:46,078 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] [2024-10-13 10:01:46,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 10:01:46,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:46,279 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:01:46,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:46,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1236436539, now seen corresponding path program 1 times [2024-10-13 10:01:46,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:46,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641673370] [2024-10-13 10:01:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:46,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:46,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641673370] [2024-10-13 10:01:46,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641673370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:46,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628156267] [2024-10-13 10:01:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:46,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:46,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:46,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:46,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 10:01:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:46,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:01:46,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:46,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:01:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628156267] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:01:46,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:01:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:01:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599692724] [2024-10-13 10:01:46,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:01:46,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:01:46,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:01:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:01:46,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 75 [2024-10-13 10:01:46,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 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) [2024-10-13 10:01:46,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:46,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 75 [2024-10-13 10:01:46,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:46,720 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-10-13 10:01:46,720 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 10:01:46,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 63 events. 4/63 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 0 based on Foata normal form. 2/65 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2024-10-13 10:01:46,722 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 9 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2024-10-13 10:01:46,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 118 flow [2024-10-13 10:01:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:01:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:01:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2024-10-13 10:01:46,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2024-10-13 10:01:46,724 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 141 flow. Second operand 6 states and 344 transitions. [2024-10-13 10:01:46,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 118 flow [2024-10-13 10:01:46,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 108 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 10:01:46,726 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 82 flow [2024-10-13 10:01:46,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-10-13 10:01:46,728 INFO L277 CegarLoopForPetriNet]: 73 programPoint places, -28 predicate places. [2024-10-13 10:01:46,728 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 82 flow [2024-10-13 10:01:46,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 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) [2024-10-13 10:01:46,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:46,729 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:46,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 10:01:46,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:46,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-10-13 10:01:46,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash -684794120, now seen corresponding path program 1 times [2024-10-13 10:01:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793781731] [2024-10-13 10:01:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:46,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:01:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:46,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:01:46,986 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:01:46,987 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-13 10:01:46,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-10-13 10:01:46,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-10-13 10:01:46,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-10-13 10:01:46,990 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-10-13 10:01:46,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-10-13 10:01:46,991 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-10-13 10:01:46,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 10:01:46,992 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-13 10:01:46,997 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:01:46,998 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 10:01:47,018 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 10:01:47,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 83 transitions, 182 flow [2024-10-13 10:01:47,038 INFO L124 PetriNetUnfolderBase]: 16/200 cut-off events. [2024-10-13 10:01:47,039 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 10:01:47,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 200 events. 16/200 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 443 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2024-10-13 10:01:47,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 83 transitions, 182 flow [2024-10-13 10:01:47,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 83 transitions, 182 flow [2024-10-13 10:01:47,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:01:47,042 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:01:47,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-13 10:01:47,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:01:47,044 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:01:47,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:01:47,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:47,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:47,044 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:01:47,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:47,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1432291435, now seen corresponding path program 1 times [2024-10-13 10:01:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369465079] [2024-10-13 10:01:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369465079] [2024-10-13 10:01:47,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369465079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:47,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:01:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624603064] [2024-10-13 10:01:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:47,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:01:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:01:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:01:47,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2024-10-13 10:01:47,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2024-10-13 10:01:47,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:47,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2024-10-13 10:01:47,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:47,112 INFO L124 PetriNetUnfolderBase]: 7/212 cut-off events. [2024-10-13 10:01:47,112 INFO L125 PetriNetUnfolderBase]: For 28/37 co-relation queries the response was YES. [2024-10-13 10:01:47,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 212 events. 7/212 cut-off events. For 28/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 541 event pairs, 4 based on Foata normal form. 16/203 useless extension candidates. Maximal degree in co-relation 111. Up to 18 conditions per place. [2024-10-13 10:01:47,115 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 7 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2024-10-13 10:01:47,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 178 flow [2024-10-13 10:01:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:01:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:01:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2024-10-13 10:01:47,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9036144578313253 [2024-10-13 10:01:47,117 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 182 flow. Second operand 2 states and 150 transitions. [2024-10-13 10:01:47,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 178 flow [2024-10-13 10:01:47,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:47,122 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 164 flow [2024-10-13 10:01:47,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-10-13 10:01:47,124 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-10-13 10:01:47,125 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 164 flow [2024-10-13 10:01:47,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2024-10-13 10:01:47,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:47,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:47,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 10:01:47,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:01:47,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1669664558, now seen corresponding path program 1 times [2024-10-13 10:01:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:47,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350726721] [2024-10-13 10:01:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:47,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:47,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:47,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350726721] [2024-10-13 10:01:47,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350726721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:47,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:47,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:01:47,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956217689] [2024-10-13 10:01:47,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:47,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:01:47,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 83 [2024-10-13 10:01:47,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-10-13 10:01:47,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:47,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 83 [2024-10-13 10:01:47,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:47,256 INFO L124 PetriNetUnfolderBase]: 28/388 cut-off events. [2024-10-13 10:01:47,257 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-13 10:01:47,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 388 events. 28/388 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1856 event pairs, 10 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 469. Up to 65 conditions per place. [2024-10-13 10:01:47,259 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 12 selfloop transitions, 2 changer transitions 3/76 dead transitions. [2024-10-13 10:01:47,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 198 flow [2024-10-13 10:01:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-10-13 10:01:47,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8112449799196787 [2024-10-13 10:01:47,261 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 164 flow. Second operand 3 states and 202 transitions. [2024-10-13 10:01:47,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 198 flow [2024-10-13 10:01:47,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 76 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:47,263 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 170 flow [2024-10-13 10:01:47,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-10-13 10:01:47,264 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2024-10-13 10:01:47,265 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 170 flow [2024-10-13 10:01:47,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2024-10-13 10:01:47,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:47,265 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] [2024-10-13 10:01:47,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 10:01:47,265 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:01:47,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:47,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1393150298, now seen corresponding path program 1 times [2024-10-13 10:01:47,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:47,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637876003] [2024-10-13 10:01:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:47,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:47,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:47,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637876003] [2024-10-13 10:01:47,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637876003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:47,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:47,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:01:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610665427] [2024-10-13 10:01:47,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:47,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:01:47,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:01:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:47,586 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 83 [2024-10-13 10:01:47,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2024-10-13 10:01:47,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:47,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 83 [2024-10-13 10:01:47,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:47,695 INFO L124 PetriNetUnfolderBase]: 77/403 cut-off events. [2024-10-13 10:01:47,698 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-13 10:01:47,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 403 events. 77/403 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2009 event pairs, 12 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 621. Up to 122 conditions per place. [2024-10-13 10:01:47,701 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 25 selfloop transitions, 6 changer transitions 2/79 dead transitions. [2024-10-13 10:01:47,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 248 flow [2024-10-13 10:01:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:01:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:01:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2024-10-13 10:01:47,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 10:01:47,704 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 170 flow. Second operand 6 states and 332 transitions. [2024-10-13 10:01:47,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 248 flow [2024-10-13 10:01:47,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:01:47,706 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 174 flow [2024-10-13 10:01:47,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-10-13 10:01:47,708 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2024-10-13 10:01:47,708 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 174 flow [2024-10-13 10:01:47,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2024-10-13 10:01:47,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:47,708 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] [2024-10-13 10:01:47,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 10:01:47,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:01:47,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1549695339, now seen corresponding path program 1 times [2024-10-13 10:01:47,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:47,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438329598] [2024-10-13 10:01:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:47,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:47,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438329598] [2024-10-13 10:01:47,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438329598] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845792012] [2024-10-13 10:01:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:47,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:47,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:47,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 10:01:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:47,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 10:01:47,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:01:47,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:01:47,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845792012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:47,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:01:47,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 10:01:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573723974] [2024-10-13 10:01:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:47,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:47,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:47,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2024-10-13 10:01:47,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-10-13 10:01:47,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:47,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2024-10-13 10:01:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:47,928 INFO L124 PetriNetUnfolderBase]: 23/360 cut-off events. [2024-10-13 10:01:47,928 INFO L125 PetriNetUnfolderBase]: For 55/65 co-relation queries the response was YES. [2024-10-13 10:01:47,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 360 events. 23/360 cut-off events. For 55/65 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1717 event pairs, 6 based on Foata normal form. 3/321 useless extension candidates. Maximal degree in co-relation 462. Up to 41 conditions per place. [2024-10-13 10:01:47,930 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 11 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-10-13 10:01:47,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 220 flow [2024-10-13 10:01:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2024-10-13 10:01:47,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8473895582329317 [2024-10-13 10:01:47,932 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 174 flow. Second operand 3 states and 211 transitions. [2024-10-13 10:01:47,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 220 flow [2024-10-13 10:01:47,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 208 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:01:47,937 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 192 flow [2024-10-13 10:01:47,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-10-13 10:01:47,940 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-10-13 10:01:47,940 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 192 flow [2024-10-13 10:01:47,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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) [2024-10-13 10:01:47,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:47,941 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] [2024-10-13 10:01:47,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 10:01:48,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:48,147 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:01:48,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:48,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1302135797, now seen corresponding path program 1 times [2024-10-13 10:01:48,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:48,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752491616] [2024-10-13 10:01:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:48,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:48,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752491616] [2024-10-13 10:01:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752491616] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:48,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106065157] [2024-10-13 10:01:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:48,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:48,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:48,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:48,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 10:01:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:48,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:01:48,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:48,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:01:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:48,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106065157] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:01:48,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:01:48,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:01:48,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381574621] [2024-10-13 10:01:48,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:01:48,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:01:48,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:48,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:01:48,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:01:48,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 83 [2024-10-13 10:01:48,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 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) [2024-10-13 10:01:48,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:48,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 83 [2024-10-13 10:01:48,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:48,540 INFO L124 PetriNetUnfolderBase]: 22/149 cut-off events. [2024-10-13 10:01:48,541 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-13 10:01:48,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 149 events. 22/149 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 388 event pairs, 0 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 245. Up to 26 conditions per place. [2024-10-13 10:01:48,543 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 18 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-10-13 10:01:48,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 198 flow [2024-10-13 10:01:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:01:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 10:01:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2024-10-13 10:01:48,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7469879518072289 [2024-10-13 10:01:48,546 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 192 flow. Second operand 9 states and 558 transitions. [2024-10-13 10:01:48,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 198 flow [2024-10-13 10:01:48,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:48,548 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 122 flow [2024-10-13 10:01:48,548 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-10-13 10:01:48,549 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -23 predicate places. [2024-10-13 10:01:48,549 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 122 flow [2024-10-13 10:01:48,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.3) internal successors, (613), 10 states have internal predecessors, (613), 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) [2024-10-13 10:01:48,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:48,550 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:48,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 10:01:48,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:48,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-13 10:01:48,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:48,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1277331358, now seen corresponding path program 1 times [2024-10-13 10:01:48,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368093516] [2024-10-13 10:01:48,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:48,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:48,780 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:01:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:48,797 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:01:48,797 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:01:48,798 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-10-13 10:01:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2024-10-13 10:01:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2024-10-13 10:01:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2024-10-13 10:01:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2024-10-13 10:01:48,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2024-10-13 10:01:48,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2024-10-13 10:01:48,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2024-10-13 10:01:48,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 10:01:48,799 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-13 10:01:48,800 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:01:48,800 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 10:01:48,813 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 10:01:48,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 209 flow [2024-10-13 10:01:48,839 INFO L124 PetriNetUnfolderBase]: 28/328 cut-off events. [2024-10-13 10:01:48,839 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 10:01:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 328 events. 28/328 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 872 event pairs, 1 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 208. Up to 16 conditions per place. [2024-10-13 10:01:48,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 91 transitions, 209 flow [2024-10-13 10:01:48,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 209 flow [2024-10-13 10:01:48,843 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:01:48,843 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:01:48,843 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 10:01:48,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:01:48,844 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:01:48,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:01:48,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:48,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:48,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:48,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -150921205, now seen corresponding path program 1 times [2024-10-13 10:01:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995315300] [2024-10-13 10:01:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:48,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:48,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995315300] [2024-10-13 10:01:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995315300] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:48,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:48,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:01:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460274702] [2024-10-13 10:01:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:48,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:01:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:01:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:01:48,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2024-10-13 10:01:48,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 209 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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) [2024-10-13 10:01:48,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:48,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2024-10-13 10:01:48,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:48,912 INFO L124 PetriNetUnfolderBase]: 36/492 cut-off events. [2024-10-13 10:01:48,912 INFO L125 PetriNetUnfolderBase]: For 122/177 co-relation queries the response was YES. [2024-10-13 10:01:48,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 492 events. 36/492 cut-off events. For 122/177 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2098 event pairs, 27 based on Foata normal form. 39/471 useless extension candidates. Maximal degree in co-relation 303. Up to 68 conditions per place. [2024-10-13 10:01:48,916 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 10 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2024-10-13 10:01:48,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 81 transitions, 209 flow [2024-10-13 10:01:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:01:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:01:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2024-10-13 10:01:48,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8901098901098901 [2024-10-13 10:01:48,917 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 209 flow. Second operand 2 states and 162 transitions. [2024-10-13 10:01:48,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 81 transitions, 209 flow [2024-10-13 10:01:48,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:48,919 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 189 flow [2024-10-13 10:01:48,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=189, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-10-13 10:01:48,920 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-10-13 10:01:48,921 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 189 flow [2024-10-13 10:01:48,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 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) [2024-10-13 10:01:48,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:48,921 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:48,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 10:01:48,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:48,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash 96712397, now seen corresponding path program 1 times [2024-10-13 10:01:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:48,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707969069] [2024-10-13 10:01:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:48,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707969069] [2024-10-13 10:01:48,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707969069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:01:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129373045] [2024-10-13 10:01:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:48,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:01:48,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 91 [2024-10-13 10:01:48,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-10-13 10:01:48,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:48,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 91 [2024-10-13 10:01:48,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:49,065 INFO L124 PetriNetUnfolderBase]: 117/1024 cut-off events. [2024-10-13 10:01:49,065 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-10-13 10:01:49,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 1024 events. 117/1024 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6565 event pairs, 104 based on Foata normal form. 1/925 useless extension candidates. Maximal degree in co-relation 1291. Up to 214 conditions per place. [2024-10-13 10:01:49,073 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 15 selfloop transitions, 2 changer transitions 3/83 dead transitions. [2024-10-13 10:01:49,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 229 flow [2024-10-13 10:01:49,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-10-13 10:01:49,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2024-10-13 10:01:49,075 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 189 flow. Second operand 3 states and 217 transitions. [2024-10-13 10:01:49,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 229 flow [2024-10-13 10:01:49,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:49,077 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 195 flow [2024-10-13 10:01:49,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-10-13 10:01:49,078 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2024-10-13 10:01:49,078 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 195 flow [2024-10-13 10:01:49,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2024-10-13 10:01:49,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:49,079 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] [2024-10-13 10:01:49,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 10:01:49,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:49,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1344078133, now seen corresponding path program 1 times [2024-10-13 10:01:49,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:49,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167610320] [2024-10-13 10:01:49,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:49,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167610320] [2024-10-13 10:01:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167610320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:01:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789634893] [2024-10-13 10:01:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:49,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:01:49,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:01:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:49,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 91 [2024-10-13 10:01:49,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 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) [2024-10-13 10:01:49,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:49,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 91 [2024-10-13 10:01:49,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:49,542 INFO L124 PetriNetUnfolderBase]: 314/1091 cut-off events. [2024-10-13 10:01:49,543 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-13 10:01:49,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 1091 events. 314/1091 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6431 event pairs, 196 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 1764. Up to 419 conditions per place. [2024-10-13 10:01:49,548 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 32 selfloop transitions, 6 changer transitions 2/90 dead transitions. [2024-10-13 10:01:49,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 295 flow [2024-10-13 10:01:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:01:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:01:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 363 transitions. [2024-10-13 10:01:49,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6648351648351648 [2024-10-13 10:01:49,551 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 195 flow. Second operand 6 states and 363 transitions. [2024-10-13 10:01:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 295 flow [2024-10-13 10:01:49,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:01:49,554 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 199 flow [2024-10-13 10:01:49,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-10-13 10:01:49,556 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2024-10-13 10:01:49,556 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 199 flow [2024-10-13 10:01:49,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.666666666666664) internal successors, (334), 6 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) [2024-10-13 10:01:49,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:49,556 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] [2024-10-13 10:01:49,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 10:01:49,557 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:49,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash 850910762, now seen corresponding path program 1 times [2024-10-13 10:01:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:49,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340304015] [2024-10-13 10:01:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:49,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340304015] [2024-10-13 10:01:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340304015] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007738755] [2024-10-13 10:01:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:49,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:49,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:49,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:49,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 10:01:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:49,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 10:01:49,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:01:49,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:01:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007738755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:49,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:01:49,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 10:01:49,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156012856] [2024-10-13 10:01:49,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:49,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:49,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:49,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:49,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 91 [2024-10-13 10:01:49,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 199 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) [2024-10-13 10:01:49,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:49,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 91 [2024-10-13 10:01:49,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:49,834 INFO L124 PetriNetUnfolderBase]: 123/1035 cut-off events. [2024-10-13 10:01:49,834 INFO L125 PetriNetUnfolderBase]: For 228/285 co-relation queries the response was YES. [2024-10-13 10:01:49,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 1035 events. 123/1035 cut-off events. For 228/285 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6894 event pairs, 40 based on Foata normal form. 6/913 useless extension candidates. Maximal degree in co-relation 1375. Up to 166 conditions per place. [2024-10-13 10:01:49,841 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 15 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-10-13 10:01:49,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 262 flow [2024-10-13 10:01:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2024-10-13 10:01:49,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8351648351648352 [2024-10-13 10:01:49,843 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 199 flow. Second operand 3 states and 228 transitions. [2024-10-13 10:01:49,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 262 flow [2024-10-13 10:01:49,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:01:49,845 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 225 flow [2024-10-13 10:01:49,845 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-13 10:01:49,846 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2024-10-13 10:01:49,846 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 225 flow [2024-10-13 10:01:49,846 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) [2024-10-13 10:01:49,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:49,847 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] [2024-10-13 10:01:49,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 10:01:50,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 10:01:50,050 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:50,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1376052293, now seen corresponding path program 1 times [2024-10-13 10:01:50,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229165718] [2024-10-13 10:01:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229165718] [2024-10-13 10:01:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229165718] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957947314] [2024-10-13 10:01:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:50,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:50,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:50,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 10:01:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:50,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:01:50,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:50,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:01:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957947314] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:01:50,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:01:50,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:01:50,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501206885] [2024-10-13 10:01:50,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:01:50,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:01:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:50,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:01:50,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:01:50,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2024-10-13 10:01:50,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2024-10-13 10:01:50,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:50,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2024-10-13 10:01:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:50,560 INFO L124 PetriNetUnfolderBase]: 192/1204 cut-off events. [2024-10-13 10:01:50,560 INFO L125 PetriNetUnfolderBase]: For 463/486 co-relation queries the response was YES. [2024-10-13 10:01:50,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1204 events. 192/1204 cut-off events. For 463/486 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7863 event pairs, 30 based on Foata normal form. 6/1111 useless extension candidates. Maximal degree in co-relation 1906. Up to 218 conditions per place. [2024-10-13 10:01:50,568 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 33 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2024-10-13 10:01:50,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 100 transitions, 375 flow [2024-10-13 10:01:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:01:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 10:01:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 608 transitions. [2024-10-13 10:01:50,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7423687423687424 [2024-10-13 10:01:50,570 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 225 flow. Second operand 9 states and 608 transitions. [2024-10-13 10:01:50,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 100 transitions, 375 flow [2024-10-13 10:01:50,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 100 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:01:50,573 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 265 flow [2024-10-13 10:01:50,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=265, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-10-13 10:01:50,574 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2024-10-13 10:01:50,574 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 265 flow [2024-10-13 10:01:50,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 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) [2024-10-13 10:01:50,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:50,575 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 10:01:50,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 10:01:50,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 10:01:50,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:50,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1423037198, now seen corresponding path program 1 times [2024-10-13 10:01:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758391620] [2024-10-13 10:01:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:50,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758391620] [2024-10-13 10:01:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758391620] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25322831] [2024-10-13 10:01:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:50,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:50,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:50,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 10:01:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:51,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 10:01:51,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:51,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:01:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25322831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:01:51,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:01:51,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-13 10:01:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960332367] [2024-10-13 10:01:51,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:01:51,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 10:01:51,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 10:01:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 10:01:51,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 91 [2024-10-13 10:01:51,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 265 flow. Second operand has 18 states, 18 states have (on average 65.38888888888889) internal successors, (1177), 18 states have internal predecessors, (1177), 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) [2024-10-13 10:01:51,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:51,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 91 [2024-10-13 10:01:51,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:51,477 INFO L124 PetriNetUnfolderBase]: 78/359 cut-off events. [2024-10-13 10:01:51,478 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-10-13 10:01:51,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 359 events. 78/359 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1496 event pairs, 0 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 714. Up to 86 conditions per place. [2024-10-13 10:01:51,480 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 30 selfloop transitions, 10 changer transitions 0/74 dead transitions. [2024-10-13 10:01:51,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 332 flow [2024-10-13 10:01:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 10:01:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 10:01:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 797 transitions. [2024-10-13 10:01:51,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7298534798534798 [2024-10-13 10:01:51,483 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 265 flow. Second operand 12 states and 797 transitions. [2024-10-13 10:01:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 332 flow [2024-10-13 10:01:51,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 317 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-13 10:01:51,485 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 177 flow [2024-10-13 10:01:51,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2024-10-13 10:01:51,486 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -15 predicate places. [2024-10-13 10:01:51,486 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 177 flow [2024-10-13 10:01:51,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.38888888888889) internal successors, (1177), 18 states have internal predecessors, (1177), 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) [2024-10-13 10:01:51,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:51,487 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:51,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 10:01:51,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:51,688 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 10:01:51,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 274865753, now seen corresponding path program 1 times [2024-10-13 10:01:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:51,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925621778] [2024-10-13 10:01:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:51,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:51,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:01:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:51,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:01:51,730 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:01:51,730 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-13 10:01:51,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-13 10:01:51,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-13 10:01:51,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-13 10:01:51,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-13 10:01:51,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-13 10:01:51,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-13 10:01:51,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-13 10:01:51,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-13 10:01:51,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 10:01:51,731 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:51,732 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:01:51,732 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 10:01:51,748 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 10:01:51,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 238 flow [2024-10-13 10:01:51,797 INFO L124 PetriNetUnfolderBase]: 52/552 cut-off events. [2024-10-13 10:01:51,798 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-13 10:01:51,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 552 events. 52/552 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1935 event pairs, 6 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 348. Up to 32 conditions per place. [2024-10-13 10:01:51,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 238 flow [2024-10-13 10:01:51,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 238 flow [2024-10-13 10:01:51,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:01:51,802 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:01:51,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-13 10:01:51,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:01:51,803 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:01:51,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:01:51,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:51,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:51,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:51,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash 958529195, now seen corresponding path program 1 times [2024-10-13 10:01:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:51,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531495553] [2024-10-13 10:01:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531495553] [2024-10-13 10:01:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531495553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:01:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817241488] [2024-10-13 10:01:51,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:51,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:01:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:01:51,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:01:51,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 99 [2024-10-13 10:01:51,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-10-13 10:01:51,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:51,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 99 [2024-10-13 10:01:51,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:51,934 INFO L124 PetriNetUnfolderBase]: 157/1308 cut-off events. [2024-10-13 10:01:51,934 INFO L125 PetriNetUnfolderBase]: For 469/754 co-relation queries the response was YES. [2024-10-13 10:01:51,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 1308 events. 157/1308 cut-off events. For 469/754 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8586 event pairs, 128 based on Foata normal form. 105/1248 useless extension candidates. Maximal degree in co-relation 947. Up to 250 conditions per place. [2024-10-13 10:01:51,942 INFO L140 encePairwiseOnDemand]: 90/99 looper letters, 13 selfloop transitions, 0 changer transitions 0/88 dead transitions. [2024-10-13 10:01:51,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 242 flow [2024-10-13 10:01:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:01:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:01:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2024-10-13 10:01:51,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2024-10-13 10:01:51,944 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 238 flow. Second operand 2 states and 174 transitions. [2024-10-13 10:01:51,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 242 flow [2024-10-13 10:01:51,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:51,946 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 216 flow [2024-10-13 10:01:51,946 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-10-13 10:01:51,947 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2024-10-13 10:01:51,947 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 216 flow [2024-10-13 10:01:51,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-10-13 10:01:51,947 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:51,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:51,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 10:01:51,947 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:51,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash 36082640, now seen corresponding path program 1 times [2024-10-13 10:01:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570145270] [2024-10-13 10:01:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570145270] [2024-10-13 10:01:51,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570145270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:51,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:51,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:01:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291507501] [2024-10-13 10:01:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:51,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:01:51,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2024-10-13 10:01:51,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-10-13 10:01:51,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:51,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2024-10-13 10:01:51,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:52,248 INFO L124 PetriNetUnfolderBase]: 422/2882 cut-off events. [2024-10-13 10:01:52,249 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2024-10-13 10:01:52,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 2882 events. 422/2882 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 23758 event pairs, 278 based on Foata normal form. 1/2616 useless extension candidates. Maximal degree in co-relation 3731. Up to 675 conditions per place. [2024-10-13 10:01:52,266 INFO L140 encePairwiseOnDemand]: 96/99 looper letters, 18 selfloop transitions, 2 changer transitions 3/90 dead transitions. [2024-10-13 10:01:52,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 90 transitions, 262 flow [2024-10-13 10:01:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2024-10-13 10:01:52,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811447811447811 [2024-10-13 10:01:52,268 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 216 flow. Second operand 3 states and 232 transitions. [2024-10-13 10:01:52,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 90 transitions, 262 flow [2024-10-13 10:01:52,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:52,270 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 222 flow [2024-10-13 10:01:52,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2024-10-13 10:01:52,270 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-10-13 10:01:52,271 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 222 flow [2024-10-13 10:01:52,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2024-10-13 10:01:52,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:52,271 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] [2024-10-13 10:01:52,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 10:01:52,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:52,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash 157953304, now seen corresponding path program 1 times [2024-10-13 10:01:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:52,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808832921] [2024-10-13 10:01:52,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:52,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:52,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:52,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808832921] [2024-10-13 10:01:52,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808832921] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:52,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:52,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:01:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454363614] [2024-10-13 10:01:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:52,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:01:52,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:01:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:52,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 99 [2024-10-13 10:01:52,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 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) [2024-10-13 10:01:52,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:52,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 99 [2024-10-13 10:01:52,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:52,889 INFO L124 PetriNetUnfolderBase]: 1099/3285 cut-off events. [2024-10-13 10:01:52,889 INFO L125 PetriNetUnfolderBase]: For 513/513 co-relation queries the response was YES. [2024-10-13 10:01:52,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5364 conditions, 3285 events. 1099/3285 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24274 event pairs, 150 based on Foata normal form. 0/3063 useless extension candidates. Maximal degree in co-relation 5355. Up to 1372 conditions per place. [2024-10-13 10:01:52,910 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 39 selfloop transitions, 6 changer transitions 2/101 dead transitions. [2024-10-13 10:01:52,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 344 flow [2024-10-13 10:01:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:01:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:01:52,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 394 transitions. [2024-10-13 10:01:52,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632996632996633 [2024-10-13 10:01:52,912 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 222 flow. Second operand 6 states and 394 transitions. [2024-10-13 10:01:52,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 344 flow [2024-10-13 10:01:52,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:01:52,915 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 226 flow [2024-10-13 10:01:52,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-10-13 10:01:52,915 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -3 predicate places. [2024-10-13 10:01:52,916 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 226 flow [2024-10-13 10:01:52,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 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) [2024-10-13 10:01:52,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:52,916 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] [2024-10-13 10:01:52,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-13 10:01:52,916 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash 89007559, now seen corresponding path program 1 times [2024-10-13 10:01:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356649138] [2024-10-13 10:01:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:52,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:52,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:52,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356649138] [2024-10-13 10:01:52,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356649138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:52,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107848550] [2024-10-13 10:01:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:52,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:52,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:52,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 10:01:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:53,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 10:01:53,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:01:53,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:01:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107848550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:53,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:01:53,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 10:01:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568188960] [2024-10-13 10:01:53,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:53,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:53,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:53,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:53,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:53,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2024-10-13 10:01:53,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-10-13 10:01:53,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:53,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2024-10-13 10:01:53,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:53,348 INFO L124 PetriNetUnfolderBase]: 492/3013 cut-off events. [2024-10-13 10:01:53,348 INFO L125 PetriNetUnfolderBase]: For 883/1117 co-relation queries the response was YES. [2024-10-13 10:01:53,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 3013 events. 492/3013 cut-off events. For 883/1117 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25680 event pairs, 183 based on Foata normal form. 10/2653 useless extension candidates. Maximal degree in co-relation 4120. Up to 584 conditions per place. [2024-10-13 10:01:53,368 INFO L140 encePairwiseOnDemand]: 92/99 looper letters, 19 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-10-13 10:01:53,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 306 flow [2024-10-13 10:01:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2024-10-13 10:01:53,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8249158249158249 [2024-10-13 10:01:53,370 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 226 flow. Second operand 3 states and 245 transitions. [2024-10-13 10:01:53,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 306 flow [2024-10-13 10:01:53,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 294 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:01:53,373 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 260 flow [2024-10-13 10:01:53,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-10-13 10:01:53,373 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -6 predicate places. [2024-10-13 10:01:53,373 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 260 flow [2024-10-13 10:01:53,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2024-10-13 10:01:53,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:53,374 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] [2024-10-13 10:01:53,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 10:01:53,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 10:01:53,578 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:53,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1631746833, now seen corresponding path program 1 times [2024-10-13 10:01:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:53,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615601811] [2024-10-13 10:01:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:53,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:53,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:53,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615601811] [2024-10-13 10:01:53,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615601811] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:53,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011875997] [2024-10-13 10:01:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:53,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:53,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:53,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 10:01:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:53,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:01:53,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:53,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:01:53,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:53,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011875997] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:01:53,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:01:53,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:01:53,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112483456] [2024-10-13 10:01:53,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:01:53,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:01:53,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:01:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:01:53,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2024-10-13 10:01:53,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 69.3) internal successors, (693), 10 states have internal predecessors, (693), 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) [2024-10-13 10:01:53,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:53,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2024-10-13 10:01:53,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:54,323 INFO L124 PetriNetUnfolderBase]: 753/3511 cut-off events. [2024-10-13 10:01:54,324 INFO L125 PetriNetUnfolderBase]: For 1787/1886 co-relation queries the response was YES. [2024-10-13 10:01:54,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 3511 events. 753/3511 cut-off events. For 1787/1886 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 30257 event pairs, 127 based on Foata normal form. 6/3210 useless extension candidates. Maximal degree in co-relation 5943. Up to 854 conditions per place. [2024-10-13 10:01:54,348 INFO L140 encePairwiseOnDemand]: 93/99 looper letters, 38 selfloop transitions, 9 changer transitions 0/109 dead transitions. [2024-10-13 10:01:54,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 424 flow [2024-10-13 10:01:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:01:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 10:01:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 648 transitions. [2024-10-13 10:01:54,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-10-13 10:01:54,351 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 260 flow. Second operand 9 states and 648 transitions. [2024-10-13 10:01:54,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 424 flow [2024-10-13 10:01:54,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:01:54,355 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 298 flow [2024-10-13 10:01:54,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-10-13 10:01:54,356 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 3 predicate places. [2024-10-13 10:01:54,356 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 298 flow [2024-10-13 10:01:54,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 69.3) internal successors, (693), 10 states have internal predecessors, (693), 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) [2024-10-13 10:01:54,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:54,357 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 10:01:54,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 10:01:54,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 10:01:54,558 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:54,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash 46783590, now seen corresponding path program 1 times [2024-10-13 10:01:54,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:54,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236037972] [2024-10-13 10:01:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236037972] [2024-10-13 10:01:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236037972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729653558] [2024-10-13 10:01:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:54,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:54,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:54,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 10:01:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:54,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 10:01:54,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:54,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:01:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729653558] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:01:55,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:01:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-13 10:01:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318229882] [2024-10-13 10:01:55,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:01:55,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 10:01:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 10:01:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 10:01:55,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2024-10-13 10:01:55,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 298 flow. Second operand has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 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) [2024-10-13 10:01:55,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:55,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2024-10-13 10:01:55,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:55,434 INFO L124 PetriNetUnfolderBase]: 230/771 cut-off events. [2024-10-13 10:01:55,435 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2024-10-13 10:01:55,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1682 conditions, 771 events. 230/771 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4060 event pairs, 0 based on Foata normal form. 24/795 useless extension candidates. Maximal degree in co-relation 1670. Up to 246 conditions per place. [2024-10-13 10:01:55,440 INFO L140 encePairwiseOnDemand]: 94/99 looper letters, 45 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-10-13 10:01:55,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 462 flow [2024-10-13 10:01:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 10:01:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 10:01:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1065 transitions. [2024-10-13 10:01:55,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2024-10-13 10:01:55,445 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 298 flow. Second operand 15 states and 1065 transitions. [2024-10-13 10:01:55,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 462 flow [2024-10-13 10:01:55,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 96 transitions, 439 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-13 10:01:55,450 INFO L231 Difference]: Finished difference. Result has 87 places, 63 transitions, 216 flow [2024-10-13 10:01:55,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=216, PETRI_PLACES=87, PETRI_TRANSITIONS=63} [2024-10-13 10:01:55,451 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2024-10-13 10:01:55,451 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 63 transitions, 216 flow [2024-10-13 10:01:55,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.38888888888889) internal successors, (1249), 18 states have internal predecessors, (1249), 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) [2024-10-13 10:01:55,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:55,452 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:55,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 10:01:55,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 10:01:55,653 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 10:01:55,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 248426653, now seen corresponding path program 1 times [2024-10-13 10:01:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476148175] [2024-10-13 10:01:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:55,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:55,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:01:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:01:55,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:01:55,730 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:01:55,730 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-13 10:01:55,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-13 10:01:55,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-13 10:01:55,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-13 10:01:55,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-13 10:01:55,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-13 10:01:55,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-13 10:01:55,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-13 10:01:55,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-13 10:01:55,731 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-13 10:01:55,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-13 10:01:55,732 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:55,733 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:01:55,733 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 10:01:55,755 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-13 10:01:55,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 269 flow [2024-10-13 10:01:55,835 INFO L124 PetriNetUnfolderBase]: 104/972 cut-off events. [2024-10-13 10:01:55,835 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-10-13 10:01:55,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 972 events. 104/972 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4453 event pairs, 23 based on Foata normal form. 0/834 useless extension candidates. Maximal degree in co-relation 597. Up to 80 conditions per place. [2024-10-13 10:01:55,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 269 flow [2024-10-13 10:01:55,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 107 transitions, 269 flow [2024-10-13 10:01:55,843 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:01:55,844 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:01:55,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-13 10:01:55,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:01:55,845 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:01:55,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:01:55,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:55,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:55,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:01:55,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:55,846 INFO L85 PathProgramCache]: Analyzing trace with hash 465675339, now seen corresponding path program 1 times [2024-10-13 10:01:55,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:55,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341429727] [2024-10-13 10:01:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:55,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:55,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341429727] [2024-10-13 10:01:55,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341429727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:55,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:55,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:01:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181368603] [2024-10-13 10:01:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:55,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:01:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:01:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:01:55,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2024-10-13 10:01:55,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 269 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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) [2024-10-13 10:01:55,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:55,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2024-10-13 10:01:55,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:56,232 INFO L124 PetriNetUnfolderBase]: 622/3788 cut-off events. [2024-10-13 10:01:56,232 INFO L125 PetriNetUnfolderBase]: For 1725/3031 co-relation queries the response was YES. [2024-10-13 10:01:56,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 3788 events. 622/3788 cut-off events. For 1725/3031 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 33590 event pairs, 527 based on Foata normal form. 306/3603 useless extension candidates. Maximal degree in co-relation 3055. Up to 892 conditions per place. [2024-10-13 10:01:56,255 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 16 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2024-10-13 10:01:56,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 277 flow [2024-10-13 10:01:56,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:01:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:01:56,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions. [2024-10-13 10:01:56,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8691588785046729 [2024-10-13 10:01:56,257 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 269 flow. Second operand 2 states and 186 transitions. [2024-10-13 10:01:56,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 277 flow [2024-10-13 10:01:56,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 277 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:56,259 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 245 flow [2024-10-13 10:01:56,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=245, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-10-13 10:01:56,260 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-10-13 10:01:56,260 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 245 flow [2024-10-13 10:01:56,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 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) [2024-10-13 10:01:56,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:56,260 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:01:56,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-13 10:01:56,261 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:01:56,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1851553829, now seen corresponding path program 1 times [2024-10-13 10:01:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825300625] [2024-10-13 10:01:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:56,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825300625] [2024-10-13 10:01:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825300625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:56,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:56,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:01:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022528511] [2024-10-13 10:01:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:56,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:01:56,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 107 [2024-10-13 10:01:56,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-10-13 10:01:56,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:56,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 107 [2024-10-13 10:01:56,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:57,256 INFO L124 PetriNetUnfolderBase]: 1439/8085 cut-off events. [2024-10-13 10:01:57,257 INFO L125 PetriNetUnfolderBase]: For 1886/1886 co-relation queries the response was YES. [2024-10-13 10:01:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10772 conditions, 8085 events. 1439/8085 cut-off events. For 1886/1886 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 81608 event pairs, 1050 based on Foata normal form. 1/7383 useless extension candidates. Maximal degree in co-relation 10764. Up to 2112 conditions per place. [2024-10-13 10:01:57,301 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 21 selfloop transitions, 2 changer transitions 3/97 dead transitions. [2024-10-13 10:01:57,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 97 transitions, 297 flow [2024-10-13 10:01:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:01:57,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:01:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2024-10-13 10:01:57,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7694704049844237 [2024-10-13 10:01:57,303 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 245 flow. Second operand 3 states and 247 transitions. [2024-10-13 10:01:57,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 97 transitions, 297 flow [2024-10-13 10:01:57,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 297 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:01:57,306 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 251 flow [2024-10-13 10:01:57,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-10-13 10:01:57,307 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-10-13 10:01:57,307 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 251 flow [2024-10-13 10:01:57,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-10-13 10:01:57,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:57,307 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] [2024-10-13 10:01:57,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-13 10:01:57,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:01:57,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2129743107, now seen corresponding path program 1 times [2024-10-13 10:01:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:57,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197629848] [2024-10-13 10:01:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:57,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:57,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197629848] [2024-10-13 10:01:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197629848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:57,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:01:57,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:01:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406060910] [2024-10-13 10:01:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:57,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:01:57,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:57,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:01:57,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:57,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 107 [2024-10-13 10:01:57,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 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) [2024-10-13 10:01:57,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:57,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 107 [2024-10-13 10:01:57,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:58,629 INFO L124 PetriNetUnfolderBase]: 3704/9558 cut-off events. [2024-10-13 10:01:58,629 INFO L125 PetriNetUnfolderBase]: For 1820/1820 co-relation queries the response was YES. [2024-10-13 10:01:58,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15928 conditions, 9558 events. 3704/9558 cut-off events. For 1820/1820 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 81162 event pairs, 460 based on Foata normal form. 0/8948 useless extension candidates. Maximal degree in co-relation 15918. Up to 4549 conditions per place. [2024-10-13 10:01:58,690 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 46 selfloop transitions, 6 changer transitions 2/112 dead transitions. [2024-10-13 10:01:58,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 112 transitions, 395 flow [2024-10-13 10:01:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:01:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:01:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 425 transitions. [2024-10-13 10:01:58,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.661993769470405 [2024-10-13 10:01:58,695 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 251 flow. Second operand 6 states and 425 transitions. [2024-10-13 10:01:58,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 112 transitions, 395 flow [2024-10-13 10:01:58,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 112 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:01:58,698 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 255 flow [2024-10-13 10:01:58,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-10-13 10:01:58,699 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -4 predicate places. [2024-10-13 10:01:58,699 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 255 flow [2024-10-13 10:01:58,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 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) [2024-10-13 10:01:58,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:01:58,700 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] [2024-10-13 10:01:58,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-13 10:01:58,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:01:58,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:01:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 459562348, now seen corresponding path program 1 times [2024-10-13 10:01:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:01:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004837847] [2024-10-13 10:01:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:01:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:01:58,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:01:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004837847] [2024-10-13 10:01:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004837847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:01:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297759125] [2024-10-13 10:01:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:01:58,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:01:58,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:01:58,742 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:01:58,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 10:01:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:01:58,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 10:01:58,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:01:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:01:58,900 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:01:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297759125] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:01:58,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:01:58,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 10:01:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096672325] [2024-10-13 10:01:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:01:58,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:01:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:01:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:01:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:01:58,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2024-10-13 10:01:58,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2024-10-13 10:01:58,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:01:58,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2024-10-13 10:01:58,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:01:59,973 INFO L124 PetriNetUnfolderBase]: 1758/8878 cut-off events. [2024-10-13 10:01:59,973 INFO L125 PetriNetUnfolderBase]: For 3119/3912 co-relation queries the response was YES. [2024-10-13 10:01:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12455 conditions, 8878 events. 1758/8878 cut-off events. For 3119/3912 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 92637 event pairs, 725 based on Foata normal form. 15/7831 useless extension candidates. Maximal degree in co-relation 12445. Up to 1923 conditions per place. [2024-10-13 10:02:00,008 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 23 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2024-10-13 10:02:00,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 352 flow [2024-10-13 10:02:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:02:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:02:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-10-13 10:02:00,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8161993769470405 [2024-10-13 10:02:00,010 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 255 flow. Second operand 3 states and 262 transitions. [2024-10-13 10:02:00,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 352 flow [2024-10-13 10:02:00,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 340 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:02:00,013 INFO L231 Difference]: Finished difference. Result has 102 places, 96 transitions, 297 flow [2024-10-13 10:02:00,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=102, PETRI_TRANSITIONS=96} [2024-10-13 10:02:00,014 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2024-10-13 10:02:00,014 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 96 transitions, 297 flow [2024-10-13 10:02:00,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2024-10-13 10:02:00,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:00,015 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] [2024-10-13 10:02:00,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 10:02:00,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:00,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:02:00,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1531530531, now seen corresponding path program 1 times [2024-10-13 10:02:00,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179771792] [2024-10-13 10:02:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:00,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179771792] [2024-10-13 10:02:00,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179771792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:02:00,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145434620] [2024-10-13 10:02:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:00,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:02:00,272 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:02:00,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 10:02:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:00,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:02:00,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:02:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:00,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:02:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:00,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145434620] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:02:00,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:02:00,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:02:00,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616011897] [2024-10-13 10:02:00,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:02:00,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:02:00,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:00,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:02:00,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:02:00,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2024-10-13 10:02:00,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 96 transitions, 297 flow. Second operand has 10 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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) [2024-10-13 10:02:00,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:00,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2024-10-13 10:02:00,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:01,437 INFO L124 PetriNetUnfolderBase]: 2499/9970 cut-off events. [2024-10-13 10:02:01,437 INFO L125 PetriNetUnfolderBase]: For 6038/6374 co-relation queries the response was YES. [2024-10-13 10:02:01,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17517 conditions, 9970 events. 2499/9970 cut-off events. For 6038/6374 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 100525 event pairs, 517 based on Foata normal form. 6/9043 useless extension candidates. Maximal degree in co-relation 17506. Up to 2811 conditions per place. [2024-10-13 10:02:01,503 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 43 selfloop transitions, 9 changer transitions 0/118 dead transitions. [2024-10-13 10:02:01,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 475 flow [2024-10-13 10:02:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:02:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 10:02:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2024-10-13 10:02:01,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7144340602284528 [2024-10-13 10:02:01,506 INFO L175 Difference]: Start difference. First operand has 102 places, 96 transitions, 297 flow. Second operand 9 states and 688 transitions. [2024-10-13 10:02:01,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 475 flow [2024-10-13 10:02:01,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 118 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:02:01,516 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 333 flow [2024-10-13 10:02:01,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2024-10-13 10:02:01,517 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2024-10-13 10:02:01,517 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 333 flow [2024-10-13 10:02:01,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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) [2024-10-13 10:02:01,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:01,518 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 10:02:01,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 10:02:01,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:01,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:02:01,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1763992574, now seen corresponding path program 1 times [2024-10-13 10:02:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:01,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069486661] [2024-10-13 10:02:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:01,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:01,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:01,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069486661] [2024-10-13 10:02:01,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069486661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:02:01,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890372551] [2024-10-13 10:02:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:01,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:01,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:02:01,860 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:02:01,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 10:02:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:01,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 10:02:01,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:02:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:02,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:02:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:02,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890372551] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:02:02,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:02:02,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-13 10:02:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184531143] [2024-10-13 10:02:02,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:02:02,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 10:02:02,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:02,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 10:02:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 10:02:02,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 107 [2024-10-13 10:02:02,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 333 flow. Second operand has 18 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 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) [2024-10-13 10:02:02,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:02,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 107 [2024-10-13 10:02:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:02,739 INFO L124 PetriNetUnfolderBase]: 614/1679 cut-off events. [2024-10-13 10:02:02,739 INFO L125 PetriNetUnfolderBase]: For 1551/1551 co-relation queries the response was YES. [2024-10-13 10:02:02,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3855 conditions, 1679 events. 614/1679 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10274 event pairs, 0 based on Foata normal form. 56/1735 useless extension candidates. Maximal degree in co-relation 3842. Up to 646 conditions per place. [2024-10-13 10:02:02,755 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 63 selfloop transitions, 16 changer transitions 0/121 dead transitions. [2024-10-13 10:02:02,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 121 transitions, 612 flow [2024-10-13 10:02:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 10:02:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 10:02:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1360 transitions. [2024-10-13 10:02:02,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7061266874350987 [2024-10-13 10:02:02,759 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 333 flow. Second operand 18 states and 1360 transitions. [2024-10-13 10:02:02,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 121 transitions, 612 flow [2024-10-13 10:02:02,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 121 transitions, 579 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-10-13 10:02:02,766 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 255 flow [2024-10-13 10:02:02,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=255, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2024-10-13 10:02:02,770 INFO L277 CegarLoopForPetriNet]: 109 programPoint places, -11 predicate places. [2024-10-13 10:02:02,770 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 255 flow [2024-10-13 10:02:02,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 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) [2024-10-13 10:02:02,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:02,772 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:02,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 10:02:02,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-13 10:02:02,973 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 10:02:02,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:02,973 INFO L85 PathProgramCache]: Analyzing trace with hash 939663086, now seen corresponding path program 1 times [2024-10-13 10:02:02,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307454880] [2024-10-13 10:02:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:02,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:02:03,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:02:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:02:03,048 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:02:03,048 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:02:03,048 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-10-13 10:02:03,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2024-10-13 10:02:03,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2024-10-13 10:02:03,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2024-10-13 10:02:03,049 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2024-10-13 10:02:03,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2024-10-13 10:02:03,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2024-10-13 10:02:03,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2024-10-13 10:02:03,050 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2024-10-13 10:02:03,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2024-10-13 10:02:03,051 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2024-10-13 10:02:03,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-10-13 10:02:03,051 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:03,052 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:02:03,053 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-13 10:02:03,076 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-10-13 10:02:03,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 115 transitions, 302 flow [2024-10-13 10:02:03,288 INFO L124 PetriNetUnfolderBase]: 220/1792 cut-off events. [2024-10-13 10:02:03,288 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-10-13 10:02:03,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1792 events. 220/1792 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10548 event pairs, 72 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 1071. Up to 192 conditions per place. [2024-10-13 10:02:03,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 115 transitions, 302 flow [2024-10-13 10:02:03,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 115 transitions, 302 flow [2024-10-13 10:02:03,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:02:03,299 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:02:03,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-13 10:02:03,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:02:03,301 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:02:03,301 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:02:03,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:03,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:03,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:03,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1629482773, now seen corresponding path program 1 times [2024-10-13 10:02:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:03,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861941394] [2024-10-13 10:02:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:03,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:03,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:03,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861941394] [2024-10-13 10:02:03,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861941394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:03,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:02:03,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:02:03,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840087342] [2024-10-13 10:02:03,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:03,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:02:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:02:03,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:02:03,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 115 [2024-10-13 10:02:03,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 115 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 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) [2024-10-13 10:02:03,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:03,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 115 [2024-10-13 10:02:03,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:04,617 INFO L124 PetriNetUnfolderBase]: 2323/11440 cut-off events. [2024-10-13 10:02:04,618 INFO L125 PetriNetUnfolderBase]: For 5810/11136 co-relation queries the response was YES. [2024-10-13 10:02:04,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16399 conditions, 11440 events. 2323/11440 cut-off events. For 5810/11136 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 126010 event pairs, 2016 based on Foata normal form. 899/10837 useless extension candidates. Maximal degree in co-relation 9915. Up to 3110 conditions per place. [2024-10-13 10:02:04,705 INFO L140 encePairwiseOnDemand]: 104/115 looper letters, 19 selfloop transitions, 0 changer transitions 0/102 dead transitions. [2024-10-13 10:02:04,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 314 flow [2024-10-13 10:02:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:02:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:02:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2024-10-13 10:02:04,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8608695652173913 [2024-10-13 10:02:04,707 INFO L175 Difference]: Start difference. First operand has 118 places, 115 transitions, 302 flow. Second operand 2 states and 198 transitions. [2024-10-13 10:02:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 314 flow [2024-10-13 10:02:04,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 102 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:02:04,713 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 276 flow [2024-10-13 10:02:04,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=276, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-10-13 10:02:04,714 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -8 predicate places. [2024-10-13 10:02:04,714 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 276 flow [2024-10-13 10:02:04,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 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) [2024-10-13 10:02:04,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:04,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:04,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-10-13 10:02:04,715 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:04,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1271229714, now seen corresponding path program 1 times [2024-10-13 10:02:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320722521] [2024-10-13 10:02:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:04,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320722521] [2024-10-13 10:02:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320722521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:02:04,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:02:04,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127515848] [2024-10-13 10:02:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:04,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:02:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:02:04,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:02:04,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 115 [2024-10-13 10:02:04,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2024-10-13 10:02:04,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:04,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 115 [2024-10-13 10:02:04,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:07,275 INFO L124 PetriNetUnfolderBase]: 4800/23166 cut-off events. [2024-10-13 10:02:07,276 INFO L125 PetriNetUnfolderBase]: For 6342/6342 co-relation queries the response was YES. [2024-10-13 10:02:07,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31656 conditions, 23166 events. 4800/23166 cut-off events. For 6342/6342 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 277363 event pairs, 4436 based on Foata normal form. 1/21274 useless extension candidates. Maximal degree in co-relation 31647. Up to 6637 conditions per place. [2024-10-13 10:02:07,361 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 24 selfloop transitions, 2 changer transitions 3/104 dead transitions. [2024-10-13 10:02:07,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 104 transitions, 334 flow [2024-10-13 10:02:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:02:07,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:02:07,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-10-13 10:02:07,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7594202898550725 [2024-10-13 10:02:07,362 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 276 flow. Second operand 3 states and 262 transitions. [2024-10-13 10:02:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 104 transitions, 334 flow [2024-10-13 10:02:07,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:02:07,364 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 282 flow [2024-10-13 10:02:07,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-10-13 10:02:07,365 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -5 predicate places. [2024-10-13 10:02:07,365 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 282 flow [2024-10-13 10:02:07,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2024-10-13 10:02:07,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:07,365 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] [2024-10-13 10:02:07,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-13 10:02:07,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:07,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1330487050, now seen corresponding path program 1 times [2024-10-13 10:02:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483299834] [2024-10-13 10:02:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:07,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483299834] [2024-10-13 10:02:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483299834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:07,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:02:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:02:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111532174] [2024-10-13 10:02:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:07,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:02:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:02:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:02:07,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 115 [2024-10-13 10:02:07,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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) [2024-10-13 10:02:07,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:07,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 115 [2024-10-13 10:02:07,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:10,684 INFO L124 PetriNetUnfolderBase]: 12237/28343 cut-off events. [2024-10-13 10:02:10,685 INFO L125 PetriNetUnfolderBase]: For 6163/6163 co-relation queries the response was YES. [2024-10-13 10:02:10,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48080 conditions, 28343 events. 12237/28343 cut-off events. For 6163/6163 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 269037 event pairs, 1392 based on Foata normal form. 0/26633 useless extension candidates. Maximal degree in co-relation 48069. Up to 15006 conditions per place. [2024-10-13 10:02:10,829 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 53 selfloop transitions, 6 changer transitions 2/123 dead transitions. [2024-10-13 10:02:10,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 123 transitions, 448 flow [2024-10-13 10:02:10,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:02:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 10:02:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2024-10-13 10:02:10,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-10-13 10:02:10,831 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 282 flow. Second operand 6 states and 456 transitions. [2024-10-13 10:02:10,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 123 transitions, 448 flow [2024-10-13 10:02:10,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 123 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 10:02:10,835 INFO L231 Difference]: Finished difference. Result has 113 places, 97 transitions, 286 flow [2024-10-13 10:02:10,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=113, PETRI_TRANSITIONS=97} [2024-10-13 10:02:10,836 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -5 predicate places. [2024-10-13 10:02:10,836 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 97 transitions, 286 flow [2024-10-13 10:02:10,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 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) [2024-10-13 10:02:10,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:10,836 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] [2024-10-13 10:02:10,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-13 10:02:10,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:10,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1962575129, now seen corresponding path program 1 times [2024-10-13 10:02:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:10,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676278870] [2024-10-13 10:02:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:10,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:10,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676278870] [2024-10-13 10:02:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676278870] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:02:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383106787] [2024-10-13 10:02:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:10,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:02:10,879 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:02:10,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 10:02:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:10,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 10:02:10,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:02:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:02:11,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 10:02:11,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383106787] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:11,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 10:02:11,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 10:02:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901672206] [2024-10-13 10:02:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:11,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:02:11,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:11,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:02:11,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:02:11,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 115 [2024-10-13 10:02:11,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 97 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2024-10-13 10:02:11,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:11,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 115 [2024-10-13 10:02:11,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:13,854 INFO L124 PetriNetUnfolderBase]: 5989/26446 cut-off events. [2024-10-13 10:02:13,854 INFO L125 PetriNetUnfolderBase]: For 10330/12756 co-relation queries the response was YES. [2024-10-13 10:02:13,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37929 conditions, 26446 events. 5989/26446 cut-off events. For 10330/12756 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 324422 event pairs, 2688 based on Foata normal form. 21/23377 useless extension candidates. Maximal degree in co-relation 37918. Up to 6167 conditions per place. [2024-10-13 10:02:14,018 INFO L140 encePairwiseOnDemand]: 106/115 looper letters, 27 selfloop transitions, 8 changer transitions 0/110 dead transitions. [2024-10-13 10:02:14,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 400 flow [2024-10-13 10:02:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:02:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:02:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2024-10-13 10:02:14,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.808695652173913 [2024-10-13 10:02:14,019 INFO L175 Difference]: Start difference. First operand has 113 places, 97 transitions, 286 flow. Second operand 3 states and 279 transitions. [2024-10-13 10:02:14,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 400 flow [2024-10-13 10:02:14,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 110 transitions, 388 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 10:02:14,026 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 336 flow [2024-10-13 10:02:14,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2024-10-13 10:02:14,026 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -8 predicate places. [2024-10-13 10:02:14,027 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 336 flow [2024-10-13 10:02:14,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2024-10-13 10:02:14,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:14,027 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] [2024-10-13 10:02:14,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 10:02:14,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:14,228 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:14,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -310794875, now seen corresponding path program 1 times [2024-10-13 10:02:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880757568] [2024-10-13 10:02:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:14,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:14,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:14,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880757568] [2024-10-13 10:02:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880757568] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:02:14,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698305817] [2024-10-13 10:02:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:14,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:14,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:02:14,278 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:02:14,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 10:02:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:14,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 10:02:14,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:02:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:14,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:02:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698305817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:02:14,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:02:14,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 10:02:14,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135862855] [2024-10-13 10:02:14,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:02:14,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 10:02:14,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 10:02:14,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 10:02:14,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2024-10-13 10:02:14,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 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) [2024-10-13 10:02:14,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:14,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2024-10-13 10:02:14,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:17,705 INFO L124 PetriNetUnfolderBase]: 7882/28393 cut-off events. [2024-10-13 10:02:17,706 INFO L125 PetriNetUnfolderBase]: For 19954/21012 co-relation queries the response was YES. [2024-10-13 10:02:17,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51123 conditions, 28393 events. 7882/28393 cut-off events. For 19954/21012 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 327694 event pairs, 1946 based on Foata normal form. 6/25545 useless extension candidates. Maximal degree in co-relation 51111. Up to 8845 conditions per place. [2024-10-13 10:02:17,885 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 48 selfloop transitions, 9 changer transitions 0/127 dead transitions. [2024-10-13 10:02:17,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 528 flow [2024-10-13 10:02:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 10:02:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 10:02:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 728 transitions. [2024-10-13 10:02:17,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7033816425120772 [2024-10-13 10:02:17,888 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 336 flow. Second operand 9 states and 728 transitions. [2024-10-13 10:02:17,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 528 flow [2024-10-13 10:02:17,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 10:02:17,901 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 370 flow [2024-10-13 10:02:17,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2024-10-13 10:02:17,902 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2024-10-13 10:02:17,902 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 370 flow [2024-10-13 10:02:17,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.3) internal successors, (773), 10 states have internal predecessors, (773), 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) [2024-10-13 10:02:17,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:17,903 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 10:02:17,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 10:02:18,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-13 10:02:18,103 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:18,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -525129294, now seen corresponding path program 1 times [2024-10-13 10:02:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217599899] [2024-10-13 10:02:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:18,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:18,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217599899] [2024-10-13 10:02:18,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217599899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:02:18,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283175406] [2024-10-13 10:02:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:18,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:02:18,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:02:18,232 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 10:02:18,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 10:02:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:18,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 10:02:18,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:02:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:18,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 10:02:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283175406] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 10:02:18,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 10:02:18,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-13 10:02:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378571614] [2024-10-13 10:02:18,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 10:02:18,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 10:02:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 10:02:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 10:02:18,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2024-10-13 10:02:18,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 370 flow. Second operand has 18 states, 18 states have (on average 77.38888888888889) internal successors, (1393), 18 states have internal predecessors, (1393), 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) [2024-10-13 10:02:18,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:18,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2024-10-13 10:02:18,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:19,481 INFO L124 PetriNetUnfolderBase]: 1542/3669 cut-off events. [2024-10-13 10:02:19,481 INFO L125 PetriNetUnfolderBase]: For 4039/4039 co-relation queries the response was YES. [2024-10-13 10:02:19,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8726 conditions, 3669 events. 1542/3669 cut-off events. For 4039/4039 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 24873 event pairs, 0 based on Foata normal form. 120/3789 useless extension candidates. Maximal degree in co-relation 8712. Up to 1606 conditions per place. [2024-10-13 10:02:19,497 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 84 selfloop transitions, 19 changer transitions 0/149 dead transitions. [2024-10-13 10:02:19,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 149 transitions, 782 flow [2024-10-13 10:02:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 10:02:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 10:02:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1682 transitions. [2024-10-13 10:02:19,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.69648033126294 [2024-10-13 10:02:19,501 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 370 flow. Second operand 21 states and 1682 transitions. [2024-10-13 10:02:19,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 149 transitions, 782 flow [2024-10-13 10:02:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 149 transitions, 737 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-10-13 10:02:19,509 INFO L231 Difference]: Finished difference. Result has 109 places, 81 transitions, 294 flow [2024-10-13 10:02:19,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=294, PETRI_PLACES=109, PETRI_TRANSITIONS=81} [2024-10-13 10:02:19,509 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -9 predicate places. [2024-10-13 10:02:19,509 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 81 transitions, 294 flow [2024-10-13 10:02:19,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 77.38888888888889) internal successors, (1393), 18 states have internal predecessors, (1393), 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) [2024-10-13 10:02:19,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:19,510 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:19,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 10:02:19,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-13 10:02:19,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-13 10:02:19,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1625003764, now seen corresponding path program 1 times [2024-10-13 10:02:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:19,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386154589] [2024-10-13 10:02:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:02:19,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 10:02:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 10:02:19,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 10:02:19,787 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 10:02:19,788 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-10-13 10:02:19,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-10-13 10:02:19,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-10-13 10:02:19,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-10-13 10:02:19,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-10-13 10:02:19,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-10-13 10:02:19,790 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:19,790 WARN L239 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 10:02:19,793 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-10-13 10:02:19,819 INFO L143 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2024-10-13 10:02:19,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 123 transitions, 337 flow [2024-10-13 10:02:20,067 INFO L124 PetriNetUnfolderBase]: 480/3428 cut-off events. [2024-10-13 10:02:20,067 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2024-10-13 10:02:20,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 3428 events. 480/3428 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25187 event pairs, 201 based on Foata normal form. 0/2988 useless extension candidates. Maximal degree in co-relation 2010. Up to 448 conditions per place. [2024-10-13 10:02:20,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 123 transitions, 337 flow [2024-10-13 10:02:20,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 123 transitions, 337 flow [2024-10-13 10:02:20,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:02:20,087 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;@611f0980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:02:20,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-13 10:02:20,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 10:02:20,089 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-10-13 10:02:20,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 10:02:20,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:20,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:20,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 10:02:20,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1031977845, now seen corresponding path program 1 times [2024-10-13 10:02:20,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:20,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789702667] [2024-10-13 10:02:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:20,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:20,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789702667] [2024-10-13 10:02:20,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789702667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:20,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:02:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:02:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37693376] [2024-10-13 10:02:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:20,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:02:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:02:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:02:20,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 123 [2024-10-13 10:02:20,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 337 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2024-10-13 10:02:20,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:20,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 123 [2024-10-13 10:02:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:24,252 INFO L124 PetriNetUnfolderBase]: 8348/35176 cut-off events. [2024-10-13 10:02:24,252 INFO L125 PetriNetUnfolderBase]: For 19242/38656 co-relation queries the response was YES. [2024-10-13 10:02:24,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51839 conditions, 35176 events. 8348/35176 cut-off events. For 19242/38656 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 457378 event pairs, 7375 based on Foata normal form. 2620/33171 useless extension candidates. Maximal degree in co-relation 32111. Up to 10656 conditions per place. [2024-10-13 10:02:24,460 INFO L140 encePairwiseOnDemand]: 111/123 looper letters, 22 selfloop transitions, 0 changer transitions 0/109 dead transitions. [2024-10-13 10:02:24,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 109 transitions, 353 flow [2024-10-13 10:02:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:02:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 10:02:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2024-10-13 10:02:24,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8536585365853658 [2024-10-13 10:02:24,462 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 337 flow. Second operand 2 states and 210 transitions. [2024-10-13 10:02:24,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 109 transitions, 353 flow [2024-10-13 10:02:24,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 109 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:02:24,471 INFO L231 Difference]: Finished difference. Result has 118 places, 109 transitions, 309 flow [2024-10-13 10:02:24,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=309, PETRI_PLACES=118, PETRI_TRANSITIONS=109} [2024-10-13 10:02:24,472 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -9 predicate places. [2024-10-13 10:02:24,472 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 109 transitions, 309 flow [2024-10-13 10:02:24,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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) [2024-10-13 10:02:24,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:24,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:24,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-10-13 10:02:24,473 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 10:02:24,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1777054985, now seen corresponding path program 1 times [2024-10-13 10:02:24,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:24,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110155122] [2024-10-13 10:02:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:24,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:24,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110155122] [2024-10-13 10:02:24,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110155122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:24,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:02:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:02:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912470575] [2024-10-13 10:02:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:24,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:02:24,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:02:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:02:24,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 123 [2024-10-13 10:02:24,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 109 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2024-10-13 10:02:24,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:24,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 123 [2024-10-13 10:02:24,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 10:02:33,004 INFO L124 PetriNetUnfolderBase]: 15877/67988 cut-off events. [2024-10-13 10:02:33,004 INFO L125 PetriNetUnfolderBase]: For 20791/20791 co-relation queries the response was YES. [2024-10-13 10:02:33,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95013 conditions, 67988 events. 15877/67988 cut-off events. For 20791/20791 co-relation queries the response was YES. Maximal size of possible extension queue 1186. Compared 936795 event pairs, 14784 based on Foata normal form. 1/62733 useless extension candidates. Maximal degree in co-relation 95003. Up to 21014 conditions per place. [2024-10-13 10:02:33,400 INFO L140 encePairwiseOnDemand]: 120/123 looper letters, 27 selfloop transitions, 2 changer transitions 3/111 dead transitions. [2024-10-13 10:02:33,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 373 flow [2024-10-13 10:02:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:02:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 10:02:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-10-13 10:02:33,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7506775067750677 [2024-10-13 10:02:33,402 INFO L175 Difference]: Start difference. First operand has 118 places, 109 transitions, 309 flow. Second operand 3 states and 277 transitions. [2024-10-13 10:02:33,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 373 flow [2024-10-13 10:02:33,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 111 transitions, 373 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 10:02:33,406 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 315 flow [2024-10-13 10:02:33,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2024-10-13 10:02:33,406 INFO L277 CegarLoopForPetriNet]: 127 programPoint places, -6 predicate places. [2024-10-13 10:02:33,406 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 315 flow [2024-10-13 10:02:33,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2024-10-13 10:02:33,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 10:02:33,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:02:33,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-10-13 10:02:33,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 10:02:33,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:02:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1632802575, now seen corresponding path program 1 times [2024-10-13 10:02:33,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:02:33,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077241551] [2024-10-13 10:02:33,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:02:33,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:02:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:02:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:02:33,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:02:33,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077241551] [2024-10-13 10:02:33,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077241551] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:02:33,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:02:33,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:02:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472155563] [2024-10-13 10:02:33,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:02:33,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:02:33,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:02:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:02:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:02:33,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 123 [2024-10-13 10:02:33,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 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) [2024-10-13 10:02:33,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 10:02:33,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 123 [2024-10-13 10:02:33,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand