./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 17:52:30,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:52:30,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-22 17:52:31,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:52:31,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:52:31,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:52:31,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:52:31,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:52:31,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:52:31,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:52:31,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:52:31,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:52:31,032 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:52:31,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:52:31,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:52:31,033 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:52:31,033 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:52:31,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:52:31,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:52:31,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:52:31,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:52:31,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:52:31,038 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-22 17:52:31,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:52:31,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 17:52:31,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:52:31,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:52:31,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:52:31,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:52:31,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:52:31,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:52:31,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:52:31,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:52:31,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:52:31,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:52:31,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:52:31,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:52:31,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:52:31,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:52:31,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:52:31,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:52:31,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2024-11-22 17:52:31,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:52:31,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:52:31,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:52:31,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:52:31,246 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:52:31,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-22 17:52:32,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:52:32,880 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:52:32,881 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-22 17:52:32,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8417b78/770b87be2266465d86871e1e4a696f48/FLAG90e67cb6e [2024-11-22 17:52:32,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8417b78/770b87be2266465d86871e1e4a696f48 [2024-11-22 17:52:32,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:52:32,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:52:32,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:52:32,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:52:32,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:52:32,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:52:32" (1/1) ... [2024-11-22 17:52:32,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4598a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:32, skipping insertion in model container [2024-11-22 17:52:32,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:52:32" (1/1) ... [2024-11-22 17:52:32,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:52:33,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:52:33,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:52:33,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:52:33,603 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:52:33,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33 WrapperNode [2024-11-22 17:52:33,604 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:52:33,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:52:33,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:52:33,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:52:33,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,702 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 153 [2024-11-22 17:52:33,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:52:33,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:52:33,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:52:33,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:52:33,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:52:33,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:52:33,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:52:33,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:52:33,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (1/1) ... [2024-11-22 17:52:33,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:52:33,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:52:33,803 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) [2024-11-22 17:52:33,804 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 [2024-11-22 17:52:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 17:52:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 17:52:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 17:52:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:52:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 17:52:33,852 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-22 17:52:33,852 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-22 17:52:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 17:52:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 17:52:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 17:52:33,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:52:33,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:52:33,857 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 17:52:34,038 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:52:34,043 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:52:34,373 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 17:52:34,373 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:52:34,396 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:52:34,396 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-22 17:52:34,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:52:34 BoogieIcfgContainer [2024-11-22 17:52:34,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:52:34,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:52:34,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:52:34,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:52:34,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:52:32" (1/3) ... [2024-11-22 17:52:34,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e4fc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:52:34, skipping insertion in model container [2024-11-22 17:52:34,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:52:33" (2/3) ... [2024-11-22 17:52:34,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e4fc23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:52:34, skipping insertion in model container [2024-11-22 17:52:34,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:52:34" (3/3) ... [2024-11-22 17:52:34,403 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2024-11-22 17:52:34,415 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:52:34,416 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-22 17:52:34,416 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 17:52:34,472 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 17:52:34,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 221 transitions, 449 flow [2024-11-22 17:52:34,573 INFO L124 PetriNetUnfolderBase]: 19/285 cut-off events. [2024-11-22 17:52:34,573 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 17:52:34,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 285 events. 19/285 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 720 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 148. Up to 4 conditions per place. [2024-11-22 17:52:34,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 221 transitions, 449 flow [2024-11-22 17:52:34,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 221 transitions, 449 flow [2024-11-22 17:52:34,595 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:52:34,604 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;@69d12390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:52:34,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-22 17:52:34,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:52:34,620 INFO L124 PetriNetUnfolderBase]: 2/110 cut-off events. [2024-11-22 17:52:34,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:52:34,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:34,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:52:34,622 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 17:52:34,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:34,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1190862045, now seen corresponding path program 1 times [2024-11-22 17:52:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093266073] [2024-11-22 17:52:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:34,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:35,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093266073] [2024-11-22 17:52:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093266073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:52:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:52:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:52:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716686367] [2024-11-22 17:52:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:52:35,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:52:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:35,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:52:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:52:35,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 221 [2024-11-22 17:52:35,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 221 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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) [2024-11-22 17:52:35,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:35,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 221 [2024-11-22 17:52:35,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:52:36,305 INFO L124 PetriNetUnfolderBase]: 579/2204 cut-off events. [2024-11-22 17:52:36,306 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 17:52:36,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 2204 events. 579/2204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14977 event pairs, 357 based on Foata normal form. 225/2274 useless extension candidates. Maximal degree in co-relation 3263. Up to 1080 conditions per place. [2024-11-22 17:52:36,316 INFO L140 encePairwiseOnDemand]: 186/221 looper letters, 73 selfloop transitions, 70 changer transitions 0/300 dead transitions. [2024-11-22 17:52:36,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 300 transitions, 893 flow [2024-11-22 17:52:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:52:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:52:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2024-11-22 17:52:36,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8506787330316742 [2024-11-22 17:52:36,336 INFO L175 Difference]: Start difference. First operand has 211 places, 221 transitions, 449 flow. Second operand 6 states and 1128 transitions. [2024-11-22 17:52:36,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 300 transitions, 893 flow [2024-11-22 17:52:36,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 300 transitions, 893 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:52:36,348 INFO L231 Difference]: Finished difference. Result has 219 places, 276 transitions, 883 flow [2024-11-22 17:52:36,350 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=883, PETRI_PLACES=219, PETRI_TRANSITIONS=276} [2024-11-22 17:52:36,355 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, 8 predicate places. [2024-11-22 17:52:36,356 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 276 transitions, 883 flow [2024-11-22 17:52:36,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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) [2024-11-22 17:52:36,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:36,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:52:36,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:52:36,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 17:52:36,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash -196153078, now seen corresponding path program 1 times [2024-11-22 17:52:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473290678] [2024-11-22 17:52:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:36,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473290678] [2024-11-22 17:52:36,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473290678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:52:36,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:52:36,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:52:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570774837] [2024-11-22 17:52:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:52:36,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:52:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:36,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:52:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:52:36,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 221 [2024-11-22 17:52:36,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 276 transitions, 883 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2024-11-22 17:52:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:36,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 221 [2024-11-22 17:52:36,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:52:36,647 INFO L124 PetriNetUnfolderBase]: 185/1196 cut-off events. [2024-11-22 17:52:36,647 INFO L125 PetriNetUnfolderBase]: For 118/132 co-relation queries the response was YES. [2024-11-22 17:52:36,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 1196 events. 185/1196 cut-off events. For 118/132 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6937 event pairs, 35 based on Foata normal form. 1/1122 useless extension candidates. Maximal degree in co-relation 1745. Up to 223 conditions per place. [2024-11-22 17:52:36,658 INFO L140 encePairwiseOnDemand]: 218/221 looper letters, 22 selfloop transitions, 3 changer transitions 0/282 dead transitions. [2024-11-22 17:52:36,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 282 transitions, 945 flow [2024-11-22 17:52:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:52:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:52:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2024-11-22 17:52:36,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8974358974358975 [2024-11-22 17:52:36,661 INFO L175 Difference]: Start difference. First operand has 219 places, 276 transitions, 883 flow. Second operand 3 states and 595 transitions. [2024-11-22 17:52:36,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 282 transitions, 945 flow [2024-11-22 17:52:36,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 282 transitions, 945 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:52:36,673 INFO L231 Difference]: Finished difference. Result has 222 places, 276 transitions, 894 flow [2024-11-22 17:52:36,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=894, PETRI_PLACES=222, PETRI_TRANSITIONS=276} [2024-11-22 17:52:36,674 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, 11 predicate places. [2024-11-22 17:52:36,674 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 276 transitions, 894 flow [2024-11-22 17:52:36,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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) [2024-11-22 17:52:36,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:36,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 17:52:36,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 17:52:36,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 17:52:36,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash 770082283, now seen corresponding path program 1 times [2024-11-22 17:52:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:36,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414730320] [2024-11-22 17:52:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414730320] [2024-11-22 17:52:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414730320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:52:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:52:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:52:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004222564] [2024-11-22 17:52:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:52:37,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:52:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:52:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:52:37,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 221 [2024-11-22 17:52:37,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 276 transitions, 894 flow. Second operand has 6 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 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) [2024-11-22 17:52:37,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:37,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 221 [2024-11-22 17:52:37,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:52:37,461 INFO L124 PetriNetUnfolderBase]: 370/1611 cut-off events. [2024-11-22 17:52:37,461 INFO L125 PetriNetUnfolderBase]: For 462/474 co-relation queries the response was YES. [2024-11-22 17:52:37,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1611 events. 370/1611 cut-off events. For 462/474 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10518 event pairs, 96 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 3125. Up to 642 conditions per place. [2024-11-22 17:52:37,470 INFO L140 encePairwiseOnDemand]: 203/221 looper letters, 112 selfloop transitions, 53 changer transitions 0/335 dead transitions. [2024-11-22 17:52:37,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 335 transitions, 1466 flow [2024-11-22 17:52:37,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:52:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:52:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2024-11-22 17:52:37,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8273001508295625 [2024-11-22 17:52:37,473 INFO L175 Difference]: Start difference. First operand has 222 places, 276 transitions, 894 flow. Second operand 6 states and 1097 transitions. [2024-11-22 17:52:37,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 335 transitions, 1466 flow [2024-11-22 17:52:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 335 transitions, 1460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 17:52:37,481 INFO L231 Difference]: Finished difference. Result has 230 places, 319 transitions, 1376 flow [2024-11-22 17:52:37,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1376, PETRI_PLACES=230, PETRI_TRANSITIONS=319} [2024-11-22 17:52:37,482 INFO L277 CegarLoopForPetriNet]: 211 programPoint places, 19 predicate places. [2024-11-22 17:52:37,482 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 319 transitions, 1376 flow [2024-11-22 17:52:37,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 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) [2024-11-22 17:52:37,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:37,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 17:52:37,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 17:52:37,484 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-22 17:52:37,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1722305356, now seen corresponding path program 1 times [2024-11-22 17:52:37,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:37,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384381066] [2024-11-22 17:52:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:52:37,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 17:52:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 17:52:37,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 17:52:37,555 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 17:52:37,556 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-22 17:52:37,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-22 17:52:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-22 17:52:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-22 17:52:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-22 17:52:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-22 17:52:37,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-22 17:52:37,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-22 17:52:37,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-22 17:52:37,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-22 17:52:37,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-22 17:52:37,559 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-22 17:52:37,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 17:52:37,560 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-22 17:52:37,561 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 17:52:37,562 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 17:52:37,603 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 17:52:37,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 287 transitions, 590 flow [2024-11-22 17:52:37,644 INFO L124 PetriNetUnfolderBase]: 34/443 cut-off events. [2024-11-22 17:52:37,644 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 17:52:37,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 443 events. 34/443 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1466 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 287. Up to 8 conditions per place. [2024-11-22 17:52:37,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 287 transitions, 590 flow [2024-11-22 17:52:37,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 287 transitions, 590 flow [2024-11-22 17:52:37,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:52:37,655 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;@69d12390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:52:37,655 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-22 17:52:37,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 17:52:37,663 INFO L124 PetriNetUnfolderBase]: 2/110 cut-off events. [2024-11-22 17:52:37,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 17:52:37,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:37,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:52:37,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-22 17:52:37,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1785199357, now seen corresponding path program 1 times [2024-11-22 17:52:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:37,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473805923] [2024-11-22 17:52:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:37,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:37,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:37,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473805923] [2024-11-22 17:52:37,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473805923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:52:37,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:52:37,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:52:37,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144875986] [2024-11-22 17:52:37,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:52:37,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:52:37,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:37,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:52:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:52:38,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 287 [2024-11-22 17:52:38,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 287 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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) [2024-11-22 17:52:38,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:38,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 287 [2024-11-22 17:52:38,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:52:45,452 INFO L124 PetriNetUnfolderBase]: 29150/68169 cut-off events. [2024-11-22 17:52:45,452 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2024-11-22 17:52:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113703 conditions, 68169 events. 29150/68169 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 757617 event pairs, 19147 based on Foata normal form. 8132/72324 useless extension candidates. Maximal degree in co-relation 99472. Up to 40547 conditions per place. [2024-11-22 17:52:45,779 INFO L140 encePairwiseOnDemand]: 230/287 looper letters, 122 selfloop transitions, 134 changer transitions 0/449 dead transitions. [2024-11-22 17:52:45,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 449 transitions, 1431 flow [2024-11-22 17:52:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:52:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:52:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1487 transitions. [2024-11-22 17:52:45,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8635307781649245 [2024-11-22 17:52:45,783 INFO L175 Difference]: Start difference. First operand has 272 places, 287 transitions, 590 flow. Second operand 6 states and 1487 transitions. [2024-11-22 17:52:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 449 transitions, 1431 flow [2024-11-22 17:52:45,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 449 transitions, 1431 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:52:45,799 INFO L231 Difference]: Finished difference. Result has 280 places, 400 transitions, 1428 flow [2024-11-22 17:52:45,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1428, PETRI_PLACES=280, PETRI_TRANSITIONS=400} [2024-11-22 17:52:45,800 INFO L277 CegarLoopForPetriNet]: 272 programPoint places, 8 predicate places. [2024-11-22 17:52:45,801 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 400 transitions, 1428 flow [2024-11-22 17:52:45,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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) [2024-11-22 17:52:45,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:45,802 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:52:45,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 17:52:45,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-22 17:52:45,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash -268637430, now seen corresponding path program 1 times [2024-11-22 17:52:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:45,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679508422] [2024-11-22 17:52:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:45,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679508422] [2024-11-22 17:52:45,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679508422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:52:45,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:52:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:52:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777451245] [2024-11-22 17:52:45,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:52:45,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:52:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:45,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:52:45,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:52:45,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 287 [2024-11-22 17:52:45,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 400 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2024-11-22 17:52:45,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:45,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 287 [2024-11-22 17:52:45,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:52:49,082 INFO L124 PetriNetUnfolderBase]: 9617/30373 cut-off events. [2024-11-22 17:52:49,083 INFO L125 PetriNetUnfolderBase]: For 5314/5716 co-relation queries the response was YES. [2024-11-22 17:52:49,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54618 conditions, 30373 events. 9617/30373 cut-off events. For 5314/5716 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 342076 event pairs, 3405 based on Foata normal form. 1/27872 useless extension candidates. Maximal degree in co-relation 28177. Up to 8560 conditions per place. [2024-11-22 17:52:49,250 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 32 selfloop transitions, 3 changer transitions 0/408 dead transitions. [2024-11-22 17:52:49,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 408 transitions, 1520 flow [2024-11-22 17:52:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:52:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 17:52:49,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2024-11-22 17:52:49,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8826945412311266 [2024-11-22 17:52:49,252 INFO L175 Difference]: Start difference. First operand has 280 places, 400 transitions, 1428 flow. Second operand 3 states and 760 transitions. [2024-11-22 17:52:49,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 408 transitions, 1520 flow [2024-11-22 17:52:49,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 408 transitions, 1520 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 17:52:49,338 INFO L231 Difference]: Finished difference. Result has 283 places, 402 transitions, 1453 flow [2024-11-22 17:52:49,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1453, PETRI_PLACES=283, PETRI_TRANSITIONS=402} [2024-11-22 17:52:49,341 INFO L277 CegarLoopForPetriNet]: 272 programPoint places, 11 predicate places. [2024-11-22 17:52:49,341 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 402 transitions, 1453 flow [2024-11-22 17:52:49,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2024-11-22 17:52:49,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:49,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 17:52:49,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 17:52:49,342 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-22 17:52:49,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash -619006229, now seen corresponding path program 1 times [2024-11-22 17:52:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:49,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339368873] [2024-11-22 17:52:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:49,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:49,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339368873] [2024-11-22 17:52:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339368873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:52:49,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:52:49,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:52:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300635439] [2024-11-22 17:52:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:52:49,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:52:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:52:49,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:52:50,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 287 [2024-11-22 17:52:50,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 402 transitions, 1453 flow. Second operand has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 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) [2024-11-22 17:52:50,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:50,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 287 [2024-11-22 17:52:50,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:52:56,317 INFO L124 PetriNetUnfolderBase]: 22789/55945 cut-off events. [2024-11-22 17:52:56,318 INFO L125 PetriNetUnfolderBase]: For 20607/22116 co-relation queries the response was YES. [2024-11-22 17:52:56,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123377 conditions, 55945 events. 22789/55945 cut-off events. For 20607/22116 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 624226 event pairs, 7775 based on Foata normal form. 55/52787 useless extension candidates. Maximal degree in co-relation 123155. Up to 26561 conditions per place. [2024-11-22 17:52:56,712 INFO L140 encePairwiseOnDemand]: 261/287 looper letters, 192 selfloop transitions, 141 changer transitions 0/581 dead transitions. [2024-11-22 17:52:56,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 581 transitions, 2921 flow [2024-11-22 17:52:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:52:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:52:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1441 transitions. [2024-11-22 17:52:56,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8368176538908246 [2024-11-22 17:52:56,716 INFO L175 Difference]: Start difference. First operand has 283 places, 402 transitions, 1453 flow. Second operand 6 states and 1441 transitions. [2024-11-22 17:52:56,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 581 transitions, 2921 flow [2024-11-22 17:52:57,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 581 transitions, 2918 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 17:52:57,026 INFO L231 Difference]: Finished difference. Result has 292 places, 533 transitions, 2834 flow [2024-11-22 17:52:57,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2834, PETRI_PLACES=292, PETRI_TRANSITIONS=533} [2024-11-22 17:52:57,027 INFO L277 CegarLoopForPetriNet]: 272 programPoint places, 20 predicate places. [2024-11-22 17:52:57,027 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 533 transitions, 2834 flow [2024-11-22 17:52:57,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 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) [2024-11-22 17:52:57,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:52:57,029 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-22 17:52:57,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 17:52:57,029 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-22 17:52:57,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:52:57,029 INFO L85 PathProgramCache]: Analyzing trace with hash 519339482, now seen corresponding path program 1 times [2024-11-22 17:52:57,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:52:57,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425851245] [2024-11-22 17:52:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:57,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:52:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:57,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:52:57,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425851245] [2024-11-22 17:52:57,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425851245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:52:57,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175552187] [2024-11-22 17:52:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:52:57,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:52:57,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:52:57,112 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) [2024-11-22 17:52:57,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:52:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:52:57,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 17:52:57,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:52:57,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:57,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:52:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:52:57,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175552187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:52:57,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:52:57,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:52:57,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506712134] [2024-11-22 17:52:57,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:52:57,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:52:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:52:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:52:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:52:57,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 287 [2024-11-22 17:52:57,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 533 transitions, 2834 flow. Second operand has 10 states, 10 states have (on average 241.3) internal successors, (2413), 10 states have internal predecessors, (2413), 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) [2024-11-22 17:52:57,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:52:57,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 287 [2024-11-22 17:52:57,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:01,540 INFO L124 PetriNetUnfolderBase]: 12683/33928 cut-off events. [2024-11-22 17:53:01,540 INFO L125 PetriNetUnfolderBase]: For 24315/26215 co-relation queries the response was YES. [2024-11-22 17:53:01,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84276 conditions, 33928 events. 12683/33928 cut-off events. For 24315/26215 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 354595 event pairs, 1715 based on Foata normal form. 240/32448 useless extension candidates. Maximal degree in co-relation 37946. Up to 13115 conditions per place. [2024-11-22 17:53:01,803 INFO L140 encePairwiseOnDemand]: 282/287 looper letters, 72 selfloop transitions, 9 changer transitions 0/541 dead transitions. [2024-11-22 17:53:01,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 541 transitions, 3004 flow [2024-11-22 17:53:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 17:53:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 17:53:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2232 transitions. [2024-11-22 17:53:01,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8641114982578397 [2024-11-22 17:53:01,809 INFO L175 Difference]: Start difference. First operand has 292 places, 533 transitions, 2834 flow. Second operand 9 states and 2232 transitions. [2024-11-22 17:53:01,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 541 transitions, 3004 flow [2024-11-22 17:53:02,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 541 transitions, 2986 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-22 17:53:02,132 INFO L231 Difference]: Finished difference. Result has 252 places, 485 transitions, 2730 flow [2024-11-22 17:53:02,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2730, PETRI_PLACES=252, PETRI_TRANSITIONS=485} [2024-11-22 17:53:02,133 INFO L277 CegarLoopForPetriNet]: 272 programPoint places, -20 predicate places. [2024-11-22 17:53:02,134 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 485 transitions, 2730 flow [2024-11-22 17:53:02,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 241.3) internal successors, (2413), 10 states have internal predecessors, (2413), 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) [2024-11-22 17:53:02,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:02,135 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:02,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 17:53:02,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:53:02,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-22 17:53:02,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1496893580, now seen corresponding path program 1 times [2024-11-22 17:53:02,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:02,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208273578] [2024-11-22 17:53:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:53:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208273578] [2024-11-22 17:53:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208273578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:53:02,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:53:02,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:53:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741781041] [2024-11-22 17:53:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:53:02,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:53:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:53:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:53:02,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 287 [2024-11-22 17:53:02,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 485 transitions, 2730 flow. Second operand has 6 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 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) [2024-11-22 17:53:02,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:02,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 287 [2024-11-22 17:53:02,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 17:53:09,001 INFO L124 PetriNetUnfolderBase]: 20252/44503 cut-off events. [2024-11-22 17:53:09,001 INFO L125 PetriNetUnfolderBase]: For 47058/50762 co-relation queries the response was YES. [2024-11-22 17:53:09,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134357 conditions, 44503 events. 20252/44503 cut-off events. For 47058/50762 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 438439 event pairs, 5324 based on Foata normal form. 64/42780 useless extension candidates. Maximal degree in co-relation 116467. Up to 29019 conditions per place. [2024-11-22 17:53:09,244 INFO L140 encePairwiseOnDemand]: 260/287 looper letters, 338 selfloop transitions, 213 changer transitions 0/716 dead transitions. [2024-11-22 17:53:09,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 716 transitions, 5174 flow [2024-11-22 17:53:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:53:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 17:53:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1348 transitions. [2024-11-22 17:53:09,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7828106852497096 [2024-11-22 17:53:09,247 INFO L175 Difference]: Start difference. First operand has 252 places, 485 transitions, 2730 flow. Second operand 6 states and 1348 transitions. [2024-11-22 17:53:09,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 716 transitions, 5174 flow [2024-11-22 17:53:09,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 716 transitions, 5151 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-22 17:53:09,520 INFO L231 Difference]: Finished difference. Result has 257 places, 688 transitions, 5017 flow [2024-11-22 17:53:09,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5017, PETRI_PLACES=257, PETRI_TRANSITIONS=688} [2024-11-22 17:53:09,523 INFO L277 CegarLoopForPetriNet]: 272 programPoint places, -15 predicate places. [2024-11-22 17:53:09,523 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 688 transitions, 5017 flow [2024-11-22 17:53:09,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.16666666666666) internal successors, (1195), 6 states have internal predecessors, (1195), 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) [2024-11-22 17:53:09,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 17:53:09,526 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:53:09,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 17:53:09,526 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-22 17:53:09,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:53:09,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1958461570, now seen corresponding path program 1 times [2024-11-22 17:53:09,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:53:09,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161911249] [2024-11-22 17:53:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:09,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:53:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 17:53:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:53:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161911249] [2024-11-22 17:53:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161911249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:53:09,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166903818] [2024-11-22 17:53:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:53:09,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:53:09,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:53:09,904 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) [2024-11-22 17:53:09,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:53:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:53:09,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 17:53:09,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:53:10,395 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 17:53:10,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 17:53:10,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-22 17:53:10,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-22 17:53:10,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 17:53:10,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-22 17:53:10,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 17:53:10,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-22 17:53:10,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 45 [2024-11-22 17:53:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 17:53:10,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:53:10,693 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_555 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)))) (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 3 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_555 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset| 1)))) (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store |c_#race| c_t_funThread1of2ForFork0_~p~0.base v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 2 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)))) is different from false [2024-11-22 17:53:10,772 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset| 1)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_555 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 2 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)))) (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_555 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~nondet16#1| (select (select (store |c_#race| |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse0 3 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)))))) is different from false [2024-11-22 17:53:10,791 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (+ .cse1 3 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_ULTIMATE.start_main_~#t_ids~0#1.base| (store (select |c_#race| |c_ULTIMATE.start_main_~#t_ids~0#1.base|) .cse2 |c_ULTIMATE.start_main_#t~nondet16#1|)))) (and (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse1 2 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) .cse2) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#t_ids~0#1.offset| 1)) |c_ULTIMATE.start_main_#t~nondet16#1|)) (forall ((v_ArrVal_555 (Array Int Int))) (= (select (select (store .cse0 |c_~#global~0.base| v_ArrVal_555) |c_ULTIMATE.start_main_~#t_ids~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#t_ids~0#1.offset|)) |c_ULTIMATE.start_main_#t~nondet16#1|)))))) is different from false [2024-11-22 17:53:10,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 17:53:10,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 67 [2024-11-22 17:53:10,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 17:53:10,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 35 [2024-11-22 17:53:10,913 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-22 17:53:10,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 1 [2024-11-22 17:53:10,918 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-22 17:53:10,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-22 17:53:10,923 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2024-11-22 17:53:10,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 1 [2024-11-22 17:53:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 6 trivial. 1 not checked. [2024-11-22 17:53:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166903818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:53:14,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:53:14,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-22 17:53:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676187628] [2024-11-22 17:53:14,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:53:14,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 17:53:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:53:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 17:53:14,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=227, Unknown=19, NotChecked=102, Total=420 [2024-11-22 17:53:14,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 287 [2024-11-22 17:53:14,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 688 transitions, 5017 flow. Second operand has 21 states, 21 states have (on average 156.0952380952381) internal successors, (3278), 21 states have internal predecessors, (3278), 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) [2024-11-22 17:53:14,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 17:53:14,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 287 [2024-11-22 17:53:14,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand