./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_72-funloop_hard_racing.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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:54:31,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:54:31,264 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-19 05:54:31,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:54:31,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:54:31,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:54:31,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:54:31,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:54:31,297 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:54:31,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:54:31,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:54:31,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:54:31,298 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:54:31,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:54:31,299 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:54:31,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:54:31,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:54:31,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:54:31,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:54:31,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:54:31,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:54:31,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:54:31,302 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-19 05:54:31,302 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:54:31,302 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 05:54:31,302 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:54:31,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:54:31,302 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:54:31,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:54:31,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:54:31,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:54:31,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:54:31,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:54:31,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:54:31,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:54:31,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2024-11-19 05:54:31,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:54:31,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:54:31,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:54:31,557 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:54:31,557 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:54:31,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-19 05:54:32,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:54:33,193 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:54:33,194 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2024-11-19 05:54:33,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d47bf47/7bcffef3d6ed4bccaf5481eecd90de9b/FLAGfeb1b70ee [2024-11-19 05:54:33,539 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d47bf47/7bcffef3d6ed4bccaf5481eecd90de9b [2024-11-19 05:54:33,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:54:33,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:54:33,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:54:33,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:54:33,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:54:33,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:54:33" (1/1) ... [2024-11-19 05:54:33,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c325a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:33, skipping insertion in model container [2024-11-19 05:54:33,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:54:33" (1/1) ... [2024-11-19 05:54:33,606 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:54:33,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:54:34,029 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:54:34,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:54:34,167 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:54:34,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34 WrapperNode [2024-11-19 05:54:34,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:54:34,169 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:54:34,169 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:54:34,169 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:54:34,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,241 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 448 [2024-11-19 05:54:34,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:54:34,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:54:34,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:54:34,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:54:34,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,305 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:54:34,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:54:34,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:54:34,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:54:34,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (1/1) ... [2024-11-19 05:54:34,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:54:34,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:34,354 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) [2024-11-19 05:54:34,362 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 [2024-11-19 05:54:34,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 05:54:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 05:54:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 05:54:34,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 05:54:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 05:54:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 05:54:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:54:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 05:54:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 05:54:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 05:54:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:54:34,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:54:34,404 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 05:54:34,537 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:54:34,539 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:54:35,057 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 05:54:35,057 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:54:35,115 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:54:35,116 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-19 05:54:35,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:54:35 BoogieIcfgContainer [2024-11-19 05:54:35,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:54:35,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:54:35,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:54:35,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:54:35,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:54:33" (1/3) ... [2024-11-19 05:54:35,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f61fc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:54:35, skipping insertion in model container [2024-11-19 05:54:35,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:34" (2/3) ... [2024-11-19 05:54:35,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f61fc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:54:35, skipping insertion in model container [2024-11-19 05:54:35,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:54:35" (3/3) ... [2024-11-19 05:54:35,126 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2024-11-19 05:54:35,141 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:54:35,142 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-19 05:54:35,142 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 05:54:35,218 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 05:54:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 449 transitions, 905 flow [2024-11-19 05:54:35,453 INFO L124 PetriNetUnfolderBase]: 78/687 cut-off events. [2024-11-19 05:54:35,453 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 05:54:35,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 687 events. 78/687 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3411 event pairs, 0 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 354. Up to 8 conditions per place. [2024-11-19 05:54:35,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 449 transitions, 905 flow [2024-11-19 05:54:35,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 449 transitions, 905 flow [2024-11-19 05:54:35,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:54:35,490 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;@6b13dde0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:54:35,491 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-19 05:54:35,504 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:54:35,504 INFO L124 PetriNetUnfolderBase]: 4/119 cut-off events. [2024-11-19 05:54:35,504 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:54:35,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:35,505 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] [2024-11-19 05:54:35,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:35,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1892056923, now seen corresponding path program 1 times [2024-11-19 05:54:35,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:35,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604658363] [2024-11-19 05:54:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:35,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:35,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604658363] [2024-11-19 05:54:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604658363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:35,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:54:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81951668] [2024-11-19 05:54:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:35,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:54:35,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:54:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:54:35,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 449 [2024-11-19 05:54:35,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 449 transitions, 905 flow. Second operand has 3 states, 3 states have (on average 374.3333333333333) internal successors, (1123), 3 states have internal predecessors, (1123), 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) [2024-11-19 05:54:35,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:35,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 449 [2024-11-19 05:54:35,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:36,382 INFO L124 PetriNetUnfolderBase]: 181/2382 cut-off events. [2024-11-19 05:54:36,384 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-11-19 05:54:36,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 2382 events. 181/2382 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19868 event pairs, 136 based on Foata normal form. 404/2586 useless extension candidates. Maximal degree in co-relation 2390. Up to 340 conditions per place. [2024-11-19 05:54:36,401 INFO L140 encePairwiseOnDemand]: 405/449 looper letters, 31 selfloop transitions, 2 changer transitions 0/403 dead transitions. [2024-11-19 05:54:36,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 403 transitions, 879 flow [2024-11-19 05:54:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:54:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:54:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1195 transitions. [2024-11-19 05:54:36,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8871566443949518 [2024-11-19 05:54:36,424 INFO L175 Difference]: Start difference. First operand has 404 places, 449 transitions, 905 flow. Second operand 3 states and 1195 transitions. [2024-11-19 05:54:36,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 403 transitions, 879 flow [2024-11-19 05:54:36,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 403 transitions, 879 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 05:54:36,440 INFO L231 Difference]: Finished difference. Result has 401 places, 403 transitions, 823 flow [2024-11-19 05:54:36,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=823, PETRI_PLACES=401, PETRI_TRANSITIONS=403} [2024-11-19 05:54:36,445 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, -3 predicate places. [2024-11-19 05:54:36,446 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 403 transitions, 823 flow [2024-11-19 05:54:36,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.3333333333333) internal successors, (1123), 3 states have internal predecessors, (1123), 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) [2024-11-19 05:54:36,447 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:36,448 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] [2024-11-19 05:54:36,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:54:36,448 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:36,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -424746447, now seen corresponding path program 1 times [2024-11-19 05:54:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:36,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63726406] [2024-11-19 05:54:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:36,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:36,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63726406] [2024-11-19 05:54:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63726406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011023286] [2024-11-19 05:54:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:36,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:36,645 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) [2024-11-19 05:54:36,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 05:54:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:36,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 05:54:36,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:36,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011023286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:36,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 05:54:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029617336] [2024-11-19 05:54:36,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:36,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 05:54:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 05:54:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 05:54:36,926 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-19 05:54:36,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 403 transitions, 823 flow. Second operand has 10 states, 10 states have (on average 371.8) internal successors, (3718), 10 states have internal predecessors, (3718), 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) [2024-11-19 05:54:36,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:36,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-19 05:54:36,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:37,376 INFO L124 PetriNetUnfolderBase]: 181/2389 cut-off events. [2024-11-19 05:54:37,376 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-11-19 05:54:37,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 2389 events. 181/2389 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19833 event pairs, 136 based on Foata normal form. 2/2191 useless extension candidates. Maximal degree in co-relation 2660. Up to 340 conditions per place. [2024-11-19 05:54:37,392 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 35 selfloop transitions, 9 changer transitions 0/411 dead transitions. [2024-11-19 05:54:37,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 411 transitions, 929 flow [2024-11-19 05:54:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 05:54:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 05:54:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3376 transitions. [2024-11-19 05:54:37,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8354367730759713 [2024-11-19 05:54:37,402 INFO L175 Difference]: Start difference. First operand has 401 places, 403 transitions, 823 flow. Second operand 9 states and 3376 transitions. [2024-11-19 05:54:37,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 411 transitions, 929 flow [2024-11-19 05:54:37,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 411 transitions, 927 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 05:54:37,412 INFO L231 Difference]: Finished difference. Result has 411 places, 409 transitions, 871 flow [2024-11-19 05:54:37,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=411, PETRI_TRANSITIONS=409} [2024-11-19 05:54:37,414 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 7 predicate places. [2024-11-19 05:54:37,414 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 409 transitions, 871 flow [2024-11-19 05:54:37,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 371.8) internal successors, (3718), 10 states have internal predecessors, (3718), 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) [2024-11-19 05:54:37,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:37,418 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:54:37,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 05:54:37,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:37,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:37,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1050401679, now seen corresponding path program 2 times [2024-11-19 05:54:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435089663] [2024-11-19 05:54:37,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:37,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:37,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 05:54:37,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 05:54:38,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:38,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435089663] [2024-11-19 05:54:38,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435089663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:38,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:38,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 05:54:38,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211499284] [2024-11-19 05:54:38,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:38,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:54:38,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:38,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:54:38,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:54:38,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 449 [2024-11-19 05:54:38,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 409 transitions, 871 flow. Second operand has 6 states, 6 states have (on average 302.5) internal successors, (1815), 6 states have internal predecessors, (1815), 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) [2024-11-19 05:54:38,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:38,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 449 [2024-11-19 05:54:38,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:39,893 INFO L124 PetriNetUnfolderBase]: 2317/9352 cut-off events. [2024-11-19 05:54:39,894 INFO L125 PetriNetUnfolderBase]: For 11/14 co-relation queries the response was YES. [2024-11-19 05:54:39,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 9352 events. 2317/9352 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 96104 event pairs, 1820 based on Foata normal form. 0/8511 useless extension candidates. Maximal degree in co-relation 13809. Up to 4319 conditions per place. [2024-11-19 05:54:39,945 INFO L140 encePairwiseOnDemand]: 422/449 looper letters, 135 selfloop transitions, 86 changer transitions 0/526 dead transitions. [2024-11-19 05:54:39,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 526 transitions, 1547 flow [2024-11-19 05:54:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:54:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 05:54:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2028 transitions. [2024-11-19 05:54:39,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7527839643652561 [2024-11-19 05:54:39,953 INFO L175 Difference]: Start difference. First operand has 411 places, 409 transitions, 871 flow. Second operand 6 states and 2028 transitions. [2024-11-19 05:54:39,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 526 transitions, 1547 flow [2024-11-19 05:54:39,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 526 transitions, 1541 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 05:54:39,967 INFO L231 Difference]: Finished difference. Result has 420 places, 494 transitions, 1431 flow [2024-11-19 05:54:39,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1431, PETRI_PLACES=420, PETRI_TRANSITIONS=494} [2024-11-19 05:54:39,969 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 16 predicate places. [2024-11-19 05:54:39,970 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 494 transitions, 1431 flow [2024-11-19 05:54:39,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 302.5) internal successors, (1815), 6 states have internal predecessors, (1815), 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) [2024-11-19 05:54:39,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:39,971 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:54:39,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 05:54:39,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:39,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1124864307, now seen corresponding path program 1 times [2024-11-19 05:54:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284068789] [2024-11-19 05:54:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 05:54:40,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:40,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284068789] [2024-11-19 05:54:40,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284068789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:40,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:40,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:54:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385352839] [2024-11-19 05:54:40,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:40,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:54:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:40,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:54:40,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:54:40,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 449 [2024-11-19 05:54:40,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 494 transitions, 1431 flow. Second operand has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 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) [2024-11-19 05:54:40,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:40,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 449 [2024-11-19 05:54:40,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:40,603 INFO L124 PetriNetUnfolderBase]: 403/3112 cut-off events. [2024-11-19 05:54:40,603 INFO L125 PetriNetUnfolderBase]: For 159/175 co-relation queries the response was YES. [2024-11-19 05:54:40,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 3112 events. 403/3112 cut-off events. For 159/175 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 27594 event pairs, 95 based on Foata normal form. 1/2860 useless extension candidates. Maximal degree in co-relation 4135. Up to 410 conditions per place. [2024-11-19 05:54:40,622 INFO L140 encePairwiseOnDemand]: 446/449 looper letters, 38 selfloop transitions, 3 changer transitions 0/502 dead transitions. [2024-11-19 05:54:40,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 502 transitions, 1529 flow [2024-11-19 05:54:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:54:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:54:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1160 transitions. [2024-11-19 05:54:40,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8611729769858946 [2024-11-19 05:54:40,625 INFO L175 Difference]: Start difference. First operand has 420 places, 494 transitions, 1431 flow. Second operand 3 states and 1160 transitions. [2024-11-19 05:54:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 502 transitions, 1529 flow [2024-11-19 05:54:40,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 502 transitions, 1529 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 05:54:40,641 INFO L231 Difference]: Finished difference. Result has 423 places, 494 transitions, 1442 flow [2024-11-19 05:54:40,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1442, PETRI_PLACES=423, PETRI_TRANSITIONS=494} [2024-11-19 05:54:40,642 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 19 predicate places. [2024-11-19 05:54:40,643 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 494 transitions, 1442 flow [2024-11-19 05:54:40,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 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) [2024-11-19 05:54:40,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:40,644 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-19 05:54:40,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 05:54:40,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:40,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:40,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1444343778, now seen corresponding path program 1 times [2024-11-19 05:54:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019486304] [2024-11-19 05:54:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:40,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:40,808 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 05:54:40,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:40,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019486304] [2024-11-19 05:54:40,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019486304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:40,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147316213] [2024-11-19 05:54:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:40,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:40,811 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) [2024-11-19 05:54:40,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 05:54:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:40,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 05:54:40,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 05:54:40,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 05:54:41,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147316213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:41,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:41,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-19 05:54:41,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504527712] [2024-11-19 05:54:41,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:41,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 05:54:41,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:41,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 05:54:41,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-19 05:54:41,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-19 05:54:41,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 494 transitions, 1442 flow. Second operand has 18 states, 18 states have (on average 371.94444444444446) internal successors, (6695), 18 states have internal predecessors, (6695), 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) [2024-11-19 05:54:41,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:41,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-19 05:54:41,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:41,722 INFO L124 PetriNetUnfolderBase]: 348/3107 cut-off events. [2024-11-19 05:54:41,723 INFO L125 PetriNetUnfolderBase]: For 171/212 co-relation queries the response was YES. [2024-11-19 05:54:41,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4561 conditions, 3107 events. 348/3107 cut-off events. For 171/212 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 27899 event pairs, 136 based on Foata normal form. 4/2874 useless extension candidates. Maximal degree in co-relation 4359. Up to 596 conditions per place. [2024-11-19 05:54:41,743 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 39 selfloop transitions, 21 changer transitions 0/512 dead transitions. [2024-11-19 05:54:41,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 512 transitions, 1650 flow [2024-11-19 05:54:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 05:54:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 05:54:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7834 transitions. [2024-11-19 05:54:41,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8308410223777707 [2024-11-19 05:54:41,763 INFO L175 Difference]: Start difference. First operand has 423 places, 494 transitions, 1442 flow. Second operand 21 states and 7834 transitions. [2024-11-19 05:54:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 512 transitions, 1650 flow [2024-11-19 05:54:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 512 transitions, 1644 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 05:54:41,775 INFO L231 Difference]: Finished difference. Result has 446 places, 507 transitions, 1566 flow [2024-11-19 05:54:41,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1566, PETRI_PLACES=446, PETRI_TRANSITIONS=507} [2024-11-19 05:54:41,777 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 42 predicate places. [2024-11-19 05:54:41,779 INFO L471 AbstractCegarLoop]: Abstraction has has 446 places, 507 transitions, 1566 flow [2024-11-19 05:54:41,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 371.94444444444446) internal successors, (6695), 18 states have internal predecessors, (6695), 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) [2024-11-19 05:54:41,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:41,784 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 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] [2024-11-19 05:54:41,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 05:54:41,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:41,985 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:41,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash 474368866, now seen corresponding path program 2 times [2024-11-19 05:54:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:41,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446639155] [2024-11-19 05:54:41,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:42,025 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 05:54:42,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 05:54:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446639155] [2024-11-19 05:54:42,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446639155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:42,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110420381] [2024-11-19 05:54:42,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:42,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:42,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 05:54:42,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 05:54:42,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 05:54:42,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:42,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 05:54:42,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 05:54:42,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 05:54:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110420381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:42,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:42,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-19 05:54:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949490978] [2024-11-19 05:54:42,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:42,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 05:54:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 05:54:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-19 05:54:42,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-19 05:54:42,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 507 transitions, 1566 flow. Second operand has 23 states, 23 states have (on average 372.04347826086956) internal successors, (8557), 23 states have internal predecessors, (8557), 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) [2024-11-19 05:54:42,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:42,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-19 05:54:42,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:43,659 INFO L124 PetriNetUnfolderBase]: 348/3122 cut-off events. [2024-11-19 05:54:43,659 INFO L125 PetriNetUnfolderBase]: For 272/313 co-relation queries the response was YES. [2024-11-19 05:54:43,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 3122 events. 348/3122 cut-off events. For 272/313 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 27917 event pairs, 136 based on Foata normal form. 3/2888 useless extension candidates. Maximal degree in co-relation 4359. Up to 596 conditions per place. [2024-11-19 05:54:43,674 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 42 selfloop transitions, 30 changer transitions 0/524 dead transitions. [2024-11-19 05:54:43,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 524 transitions, 1838 flow [2024-11-19 05:54:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 05:54:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-19 05:54:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11175 transitions. [2024-11-19 05:54:43,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8296213808463252 [2024-11-19 05:54:43,692 INFO L175 Difference]: Start difference. First operand has 446 places, 507 transitions, 1566 flow. Second operand 30 states and 11175 transitions. [2024-11-19 05:54:43,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 524 transitions, 1838 flow [2024-11-19 05:54:43,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 524 transitions, 1808 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-19 05:54:43,702 INFO L231 Difference]: Finished difference. Result has 473 places, 517 transitions, 1694 flow [2024-11-19 05:54:43,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1694, PETRI_PLACES=473, PETRI_TRANSITIONS=517} [2024-11-19 05:54:43,703 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 69 predicate places. [2024-11-19 05:54:43,703 INFO L471 AbstractCegarLoop]: Abstraction has has 473 places, 517 transitions, 1694 flow [2024-11-19 05:54:43,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 372.04347826086956) internal successors, (8557), 23 states have internal predecessors, (8557), 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) [2024-11-19 05:54:43,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:43,708 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 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] [2024-11-19 05:54:43,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 05:54:43,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:43,913 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-19 05:54:43,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:43,913 INFO L85 PathProgramCache]: Analyzing trace with hash 600129272, now seen corresponding path program 3 times [2024-11-19 05:54:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:43,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537596743] [2024-11-19 05:54:43,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 05:54:43,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:43,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 05:54:43,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 05:54:43,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:54:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:54:44,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:54:44,062 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:54:44,063 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-19 05:54:44,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-19 05:54:44,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-19 05:54:44,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-19 05:54:44,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-19 05:54:44,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-19 05:54:44,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-19 05:54:44,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-19 05:54:44,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-19 05:54:44,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-19 05:54:44,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-19 05:54:44,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-19 05:54:44,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-19 05:54:44,068 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-19 05:54:44,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-19 05:54:44,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-19 05:54:44,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-19 05:54:44,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 05:54:44,070 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2024-11-19 05:54:44,076 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:54:44,076 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 05:54:44,127 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 05:54:44,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 564 transitions, 1144 flow [2024-11-19 05:54:44,242 INFO L124 PetriNetUnfolderBase]: 126/1068 cut-off events. [2024-11-19 05:54:44,243 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 05:54:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 1068 events. 126/1068 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6186 event pairs, 0 based on Foata normal form. 0/891 useless extension candidates. Maximal degree in co-relation 689. Up to 12 conditions per place. [2024-11-19 05:54:44,254 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 564 transitions, 1144 flow [2024-11-19 05:54:44,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 564 transitions, 1144 flow [2024-11-19 05:54:44,263 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:54:44,263 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;@6b13dde0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:54:44,263 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-19 05:54:44,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:54:44,269 INFO L124 PetriNetUnfolderBase]: 4/119 cut-off events. [2024-11-19 05:54:44,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:54:44,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:44,269 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] [2024-11-19 05:54:44,269 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-19 05:54:44,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1276581519, now seen corresponding path program 1 times [2024-11-19 05:54:44,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:44,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630805592] [2024-11-19 05:54:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:44,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:44,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630805592] [2024-11-19 05:54:44,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630805592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:44,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:44,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:54:44,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336672470] [2024-11-19 05:54:44,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:44,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:54:44,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:44,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:54:44,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:54:44,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 564 [2024-11-19 05:54:44,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 564 transitions, 1144 flow. Second operand has 3 states, 3 states have (on average 465.3333333333333) internal successors, (1396), 3 states have internal predecessors, (1396), 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) [2024-11-19 05:54:44,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:44,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 564 [2024-11-19 05:54:44,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:47,458 INFO L124 PetriNetUnfolderBase]: 3251/22887 cut-off events. [2024-11-19 05:54:47,458 INFO L125 PetriNetUnfolderBase]: For 149/153 co-relation queries the response was YES. [2024-11-19 05:54:47,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27667 conditions, 22887 events. 3251/22887 cut-off events. For 149/153 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 311246 event pairs, 2680 based on Foata normal form. 5658/26656 useless extension candidates. Maximal degree in co-relation 24734. Up to 4707 conditions per place. [2024-11-19 05:54:47,589 INFO L140 encePairwiseOnDemand]: 507/564 looper letters, 41 selfloop transitions, 2 changer transitions 0/503 dead transitions. [2024-11-19 05:54:47,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 503 transitions, 1108 flow [2024-11-19 05:54:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:54:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:54:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1491 transitions. [2024-11-19 05:54:47,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8812056737588653 [2024-11-19 05:54:47,592 INFO L175 Difference]: Start difference. First operand has 505 places, 564 transitions, 1144 flow. Second operand 3 states and 1491 transitions. [2024-11-19 05:54:47,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 503 transitions, 1108 flow [2024-11-19 05:54:47,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 503 transitions, 1108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 05:54:47,599 INFO L231 Difference]: Finished difference. Result has 500 places, 503 transitions, 1032 flow [2024-11-19 05:54:47,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1032, PETRI_PLACES=500, PETRI_TRANSITIONS=503} [2024-11-19 05:54:47,600 INFO L277 CegarLoopForPetriNet]: 505 programPoint places, -5 predicate places. [2024-11-19 05:54:47,600 INFO L471 AbstractCegarLoop]: Abstraction has has 500 places, 503 transitions, 1032 flow [2024-11-19 05:54:47,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 465.3333333333333) internal successors, (1396), 3 states have internal predecessors, (1396), 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) [2024-11-19 05:54:47,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:47,601 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] [2024-11-19 05:54:47,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 05:54:47,602 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-19 05:54:47,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1040883535, now seen corresponding path program 1 times [2024-11-19 05:54:47,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:47,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779582567] [2024-11-19 05:54:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:47,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779582567] [2024-11-19 05:54:47,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779582567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:47,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442751759] [2024-11-19 05:54:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:47,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:47,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 05:54:47,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 05:54:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:47,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 05:54:47,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:47,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442751759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:47,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:47,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 05:54:47,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162180728] [2024-11-19 05:54:47,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:47,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 05:54:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 05:54:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 05:54:47,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 564 [2024-11-19 05:54:47,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 503 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 462.8) internal successors, (4628), 10 states have internal predecessors, (4628), 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) [2024-11-19 05:54:47,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:47,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 564 [2024-11-19 05:54:47,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:51,065 INFO L124 PetriNetUnfolderBase]: 3251/22894 cut-off events. [2024-11-19 05:54:51,065 INFO L125 PetriNetUnfolderBase]: For 150/154 co-relation queries the response was YES. [2024-11-19 05:54:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27693 conditions, 22894 events. 3251/22894 cut-off events. For 150/154 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 311010 event pairs, 2680 based on Foata normal form. 2/21007 useless extension candidates. Maximal degree in co-relation 27597. Up to 4707 conditions per place. [2024-11-19 05:54:51,212 INFO L140 encePairwiseOnDemand]: 558/564 looper letters, 45 selfloop transitions, 9 changer transitions 0/511 dead transitions. [2024-11-19 05:54:51,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 511 transitions, 1158 flow [2024-11-19 05:54:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 05:54:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 05:54:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4205 transitions. [2024-11-19 05:54:51,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.828408195429472 [2024-11-19 05:54:51,219 INFO L175 Difference]: Start difference. First operand has 500 places, 503 transitions, 1032 flow. Second operand 9 states and 4205 transitions. [2024-11-19 05:54:51,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 511 transitions, 1158 flow [2024-11-19 05:54:51,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 511 transitions, 1156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 05:54:51,227 INFO L231 Difference]: Finished difference. Result has 510 places, 509 transitions, 1080 flow [2024-11-19 05:54:51,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=564, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1080, PETRI_PLACES=510, PETRI_TRANSITIONS=509} [2024-11-19 05:54:51,229 INFO L277 CegarLoopForPetriNet]: 505 programPoint places, 5 predicate places. [2024-11-19 05:54:51,229 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 509 transitions, 1080 flow [2024-11-19 05:54:51,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 462.8) internal successors, (4628), 10 states have internal predecessors, (4628), 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) [2024-11-19 05:54:51,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:51,232 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:54:51,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 05:54:51,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:51,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-19 05:54:51,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash -505175183, now seen corresponding path program 2 times [2024-11-19 05:54:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:51,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916609758] [2024-11-19 05:54:51,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:51,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:51,453 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 05:54:51,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 05:54:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916609758] [2024-11-19 05:54:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916609758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:51,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 05:54:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982497298] [2024-11-19 05:54:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:51,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:54:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:51,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:54:51,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:54:52,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 564 [2024-11-19 05:54:52,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 509 transitions, 1080 flow. Second operand has 6 states, 6 states have (on average 373.5) internal successors, (2241), 6 states have internal predecessors, (2241), 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) [2024-11-19 05:54:52,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:52,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 564 [2024-11-19 05:54:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand