./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.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_73-funloop_hard_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:54:44,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:54:45,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-19 05:54:45,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:54:45,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:54:45,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:54:45,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:54:45,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:54:45,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:54:45,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:54:45,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:54:45,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:54:45,095 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:54:45,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:54:45,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:54:45,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:54:45,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:54:45,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:54:45,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:54:45,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:54:45,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:54:45,103 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:54:45,103 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-19 05:54:45,103 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:54:45,103 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 05:54:45,104 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:54:45,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:54:45,104 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:54:45,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:54:45,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:54:45,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:54:45,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:54:45,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:54:45,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:54:45,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:54:45,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:54:45,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:54:45,108 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:54:45,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:54:45,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:54:45,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:54:45,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-11-19 05:54:45,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:54:45,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:54:45,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:54:45,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:54:45,392 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:54:45,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-19 05:54:46,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:54:47,162 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:54:47,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-11-19 05:54:47,186 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240faef0d/99dea98417ff45f983fd58ac11e4f115/FLAG703b6b84b [2024-11-19 05:54:47,199 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/240faef0d/99dea98417ff45f983fd58ac11e4f115 [2024-11-19 05:54:47,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:54:47,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:54:47,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:54:47,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:54:47,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:54:47,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:54:47" (1/1) ... [2024-11-19 05:54:47,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a08520b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:47, skipping insertion in model container [2024-11-19 05:54:47,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:54:47" (1/1) ... [2024-11-19 05:54:47,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:54:47,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:54:47,849 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:54:47,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:54:48,014 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:54:48,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48 WrapperNode [2024-11-19 05:54:48,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:54:48,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:54:48,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:54:48,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:54:48,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,103 INFO L138 Inliner]: procedures = 272, calls = 110, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 448 [2024-11-19 05:54:48,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:54:48,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:54:48,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:54:48,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:54:48,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:54:48,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:54:48,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:54:48,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:54:48,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (1/1) ... [2024-11-19 05:54:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:54:48,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:48,216 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 05:54:48,219 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 05:54:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 05:54:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 05:54:48,269 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 05:54:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 05:54:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 05:54:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 05:54:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:54:48,270 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-19 05:54:48,270 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-19 05:54:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 05:54:48,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:54:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:54:48,273 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 05:54:48,464 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:54:48,468 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:54:49,224 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 05:54:49,225 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:54:49,291 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:54:49,292 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-19 05:54:49,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:54:49 BoogieIcfgContainer [2024-11-19 05:54:49,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:54:49,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:54:49,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:54:49,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:54:49,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:54:47" (1/3) ... [2024-11-19 05:54:49,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6faae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:54:49, skipping insertion in model container [2024-11-19 05:54:49,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:54:48" (2/3) ... [2024-11-19 05:54:49,300 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6faae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:54:49, skipping insertion in model container [2024-11-19 05:54:49,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:54:49" (3/3) ... [2024-11-19 05:54:49,302 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-11-19 05:54:49,320 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:54:49,321 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-19 05:54:49,321 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 05:54:49,413 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 05:54:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 449 transitions, 905 flow [2024-11-19 05:54:49,726 INFO L124 PetriNetUnfolderBase]: 78/687 cut-off events. [2024-11-19 05:54:49,726 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 05:54:49,738 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 05:54:49,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 449 transitions, 905 flow [2024-11-19 05:54:49,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 404 places, 449 transitions, 905 flow [2024-11-19 05:54:49,762 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:54:49,769 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;@74131ae9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:54:49,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-19 05:54:49,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:54:49,786 INFO L124 PetriNetUnfolderBase]: 4/119 cut-off events. [2024-11-19 05:54:49,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:54:49,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:49,787 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 05:54:49,788 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 05:54:49,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:49,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1892056923, now seen corresponding path program 1 times [2024-11-19 05:54:49,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789894706] [2024-11-19 05:54:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:49,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:54:50,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:50,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789894706] [2024-11-19 05:54:50,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789894706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:50,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:50,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:54:50,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199744671] [2024-11-19 05:54:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:50,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:54:50,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:50,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:54:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:54:50,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 449 [2024-11-19 05:54:50,334 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 05:54:50,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:50,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 449 [2024-11-19 05:54:50,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:50,888 INFO L124 PetriNetUnfolderBase]: 181/2382 cut-off events. [2024-11-19 05:54:50,888 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2024-11-19 05:54:50,899 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 05:54:50,910 INFO L140 encePairwiseOnDemand]: 405/449 looper letters, 31 selfloop transitions, 2 changer transitions 0/403 dead transitions. [2024-11-19 05:54:50,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 403 transitions, 879 flow [2024-11-19 05:54:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:54:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:54:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1195 transitions. [2024-11-19 05:54:50,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8871566443949518 [2024-11-19 05:54:50,938 INFO L175 Difference]: Start difference. First operand has 404 places, 449 transitions, 905 flow. Second operand 3 states and 1195 transitions. [2024-11-19 05:54:50,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 403 transitions, 879 flow [2024-11-19 05:54:50,947 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 05:54:50,958 INFO L231 Difference]: Finished difference. Result has 401 places, 403 transitions, 823 flow [2024-11-19 05:54:50,963 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 05:54:50,967 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, -3 predicate places. [2024-11-19 05:54:50,967 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 403 transitions, 823 flow [2024-11-19 05:54:50,969 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 05:54:50,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:50,970 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 05:54:50,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:54:50,971 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 05:54:50,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash -424746447, now seen corresponding path program 1 times [2024-11-19 05:54:50,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468101892] [2024-11-19 05:54:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:50,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:51,236 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 05:54:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:51,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468101892] [2024-11-19 05:54:51,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468101892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:51,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531491782] [2024-11-19 05:54:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:51,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:51,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:51,242 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 05:54:51,243 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 05:54:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:51,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 05:54:51,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:51,449 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 05:54:51,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:51,501 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 05:54:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531491782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:51,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 05:54:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350712098] [2024-11-19 05:54:51,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:51,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 05:54:51,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 05:54:51,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 05:54:51,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-19 05:54:51,551 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 05:54:51,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:51,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-19 05:54:51,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:52,106 INFO L124 PetriNetUnfolderBase]: 181/2389 cut-off events. [2024-11-19 05:54:52,107 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-11-19 05:54:52,116 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 05:54:52,125 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 35 selfloop transitions, 9 changer transitions 0/411 dead transitions. [2024-11-19 05:54:52,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 411 transitions, 929 flow [2024-11-19 05:54:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 05:54:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 05:54:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3376 transitions. [2024-11-19 05:54:52,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8354367730759713 [2024-11-19 05:54:52,134 INFO L175 Difference]: Start difference. First operand has 401 places, 403 transitions, 823 flow. Second operand 9 states and 3376 transitions. [2024-11-19 05:54:52,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 411 transitions, 929 flow [2024-11-19 05:54:52,139 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 05:54:52,144 INFO L231 Difference]: Finished difference. Result has 411 places, 409 transitions, 871 flow [2024-11-19 05:54:52,145 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 05:54:52,146 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 7 predicate places. [2024-11-19 05:54:52,146 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 409 transitions, 871 flow [2024-11-19 05:54:52,149 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 05:54:52,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:52,150 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 05:54:52,169 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 05:54:52,350 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 05:54:52,351 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 05:54:52,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1050401679, now seen corresponding path program 2 times [2024-11-19 05:54:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368191285] [2024-11-19 05:54:52,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:52,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 05:54:52,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:53,100 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 05:54:53,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368191285] [2024-11-19 05:54:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368191285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:53,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:53,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 05:54:53,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052410113] [2024-11-19 05:54:53,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:53,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:54:53,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:53,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:54:53,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:54:53,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 449 [2024-11-19 05:54:53,554 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 05:54:53,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:53,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 449 [2024-11-19 05:54:53,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:55,381 INFO L124 PetriNetUnfolderBase]: 2317/9352 cut-off events. [2024-11-19 05:54:55,382 INFO L125 PetriNetUnfolderBase]: For 11/14 co-relation queries the response was YES. [2024-11-19 05:54:55,404 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 05:54:55,445 INFO L140 encePairwiseOnDemand]: 422/449 looper letters, 135 selfloop transitions, 86 changer transitions 0/526 dead transitions. [2024-11-19 05:54:55,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 526 transitions, 1547 flow [2024-11-19 05:54:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:54:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 05:54:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2028 transitions. [2024-11-19 05:54:55,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7527839643652561 [2024-11-19 05:54:55,452 INFO L175 Difference]: Start difference. First operand has 411 places, 409 transitions, 871 flow. Second operand 6 states and 2028 transitions. [2024-11-19 05:54:55,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 526 transitions, 1547 flow [2024-11-19 05:54:55,462 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 05:54:55,471 INFO L231 Difference]: Finished difference. Result has 420 places, 494 transitions, 1431 flow [2024-11-19 05:54:55,472 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 05:54:55,473 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 16 predicate places. [2024-11-19 05:54:55,473 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 494 transitions, 1431 flow [2024-11-19 05:54:55,475 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 05:54:55,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:55,475 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 05:54:55,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 05:54:55,476 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 05:54:55,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:55,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1124864307, now seen corresponding path program 1 times [2024-11-19 05:54:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921366697] [2024-11-19 05:54:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:55,599 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 05:54:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:55,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921366697] [2024-11-19 05:54:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921366697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:54:55,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:54:55,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:54:55,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758952946] [2024-11-19 05:54:55,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:54:55,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:54:55,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:54:55,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:54:55,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 449 [2024-11-19 05:54:55,626 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 05:54:55,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:55,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 449 [2024-11-19 05:54:55,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:56,262 INFO L124 PetriNetUnfolderBase]: 403/3112 cut-off events. [2024-11-19 05:54:56,262 INFO L125 PetriNetUnfolderBase]: For 159/175 co-relation queries the response was YES. [2024-11-19 05:54:56,275 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 05:54:56,289 INFO L140 encePairwiseOnDemand]: 446/449 looper letters, 38 selfloop transitions, 3 changer transitions 0/502 dead transitions. [2024-11-19 05:54:56,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 502 transitions, 1529 flow [2024-11-19 05:54:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:54:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:54:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1160 transitions. [2024-11-19 05:54:56,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8611729769858946 [2024-11-19 05:54:56,294 INFO L175 Difference]: Start difference. First operand has 420 places, 494 transitions, 1431 flow. Second operand 3 states and 1160 transitions. [2024-11-19 05:54:56,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 502 transitions, 1529 flow [2024-11-19 05:54:56,305 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 05:54:56,311 INFO L231 Difference]: Finished difference. Result has 423 places, 494 transitions, 1442 flow [2024-11-19 05:54:56,312 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 05:54:56,314 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 19 predicate places. [2024-11-19 05:54:56,314 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 494 transitions, 1442 flow [2024-11-19 05:54:56,315 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 05:54:56,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:56,316 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 05:54:56,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 05:54:56,317 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 05:54:56,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1444343778, now seen corresponding path program 1 times [2024-11-19 05:54:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101852088] [2024-11-19 05:54:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:56,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:56,557 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 05:54:56,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101852088] [2024-11-19 05:54:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101852088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831010414] [2024-11-19 05:54:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:54:56,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:56,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:56,562 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 05:54:56,564 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 05:54:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:54:56,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 05:54:56,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:56,733 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 05:54:56,734 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:56,862 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 05:54:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831010414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:56,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-19 05:54:56,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427618320] [2024-11-19 05:54:56,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:56,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 05:54:56,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:56,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 05:54:56,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-19 05:54:56,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-19 05:54:56,903 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 05:54:56,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:56,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-19 05:54:56,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:57,635 INFO L124 PetriNetUnfolderBase]: 348/3107 cut-off events. [2024-11-19 05:54:57,636 INFO L125 PetriNetUnfolderBase]: For 171/212 co-relation queries the response was YES. [2024-11-19 05:54:57,651 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 05:54:57,659 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 39 selfloop transitions, 21 changer transitions 0/512 dead transitions. [2024-11-19 05:54:57,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 512 transitions, 1650 flow [2024-11-19 05:54:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 05:54:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 05:54:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7834 transitions. [2024-11-19 05:54:57,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8308410223777707 [2024-11-19 05:54:57,681 INFO L175 Difference]: Start difference. First operand has 423 places, 494 transitions, 1442 flow. Second operand 21 states and 7834 transitions. [2024-11-19 05:54:57,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 512 transitions, 1650 flow [2024-11-19 05:54:57,690 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 05:54:57,698 INFO L231 Difference]: Finished difference. Result has 446 places, 507 transitions, 1566 flow [2024-11-19 05:54:57,699 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 05:54:57,700 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 42 predicate places. [2024-11-19 05:54:57,701 INFO L471 AbstractCegarLoop]: Abstraction has has 446 places, 507 transitions, 1566 flow [2024-11-19 05:54:57,705 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 05:54:57,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:57,706 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 05:54:57,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 05:54:57,906 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 05:54:57,907 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 05:54:57,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:54:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 474368866, now seen corresponding path program 2 times [2024-11-19 05:54:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:54:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910903963] [2024-11-19 05:54:57,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:54:57,957 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 05:54:57,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:58,304 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 05:54:58,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:54:58,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910903963] [2024-11-19 05:54:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910903963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:54:58,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690884548] [2024-11-19 05:54:58,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:54:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:54:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:54:58,308 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 05:54:58,311 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 05:54:58,453 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 05:54:58,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:54:58,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 05:54:58,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:54:58,585 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 05:54:58,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:54:58,815 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 05:54:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690884548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:54:58,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:54:58,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-19 05:54:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259557283] [2024-11-19 05:54:58,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:54:58,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 05:54:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:54:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 05:54:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-19 05:54:58,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 449 [2024-11-19 05:54:58,872 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 05:54:58,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:54:58,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 449 [2024-11-19 05:54:58,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:54:59,872 INFO L124 PetriNetUnfolderBase]: 348/3122 cut-off events. [2024-11-19 05:54:59,872 INFO L125 PetriNetUnfolderBase]: For 272/313 co-relation queries the response was YES. [2024-11-19 05:54:59,892 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 05:54:59,905 INFO L140 encePairwiseOnDemand]: 443/449 looper letters, 42 selfloop transitions, 30 changer transitions 0/524 dead transitions. [2024-11-19 05:54:59,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 524 transitions, 1838 flow [2024-11-19 05:54:59,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-19 05:54:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-19 05:54:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11175 transitions. [2024-11-19 05:54:59,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8296213808463252 [2024-11-19 05:54:59,932 INFO L175 Difference]: Start difference. First operand has 446 places, 507 transitions, 1566 flow. Second operand 30 states and 11175 transitions. [2024-11-19 05:54:59,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 524 transitions, 1838 flow [2024-11-19 05:54:59,942 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 05:54:59,950 INFO L231 Difference]: Finished difference. Result has 473 places, 517 transitions, 1694 flow [2024-11-19 05:54:59,951 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 05:54:59,954 INFO L277 CegarLoopForPetriNet]: 404 programPoint places, 69 predicate places. [2024-11-19 05:54:59,954 INFO L471 AbstractCegarLoop]: Abstraction has has 473 places, 517 transitions, 1694 flow [2024-11-19 05:54:59,960 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 05:54:59,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:54:59,960 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 05:54:59,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 05:55:00,161 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 05:55:00,162 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 05:55:00,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:55:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash 600129272, now seen corresponding path program 3 times [2024-11-19 05:55:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:55:00,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788562943] [2024-11-19 05:55:00,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 05:55:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:55:00,265 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 05:55:00,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 05:55:00,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 05:55:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 05:55:00,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 05:55:00,348 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 05:55:00,349 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-19 05:55:00,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-11-19 05:55:00,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-11-19 05:55:00,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-11-19 05:55:00,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-11-19 05:55:00,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-11-19 05:55:00,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-11-19 05:55:00,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-11-19 05:55:00,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-11-19 05:55:00,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-11-19 05:55:00,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-11-19 05:55:00,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-11-19 05:55:00,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-11-19 05:55:00,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-11-19 05:55:00,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-11-19 05:55:00,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-11-19 05:55:00,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-11-19 05:55:00,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-11-19 05:55:00,355 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-11-19 05:55:00,356 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-11-19 05:55:00,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-11-19 05:55:00,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-11-19 05:55:00,358 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-11-19 05:55:00,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 05:55:00,361 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2024-11-19 05:55:00,364 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 05:55:00,365 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 05:55:00,443 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 05:55:00,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 564 transitions, 1144 flow [2024-11-19 05:55:00,634 INFO L124 PetriNetUnfolderBase]: 126/1068 cut-off events. [2024-11-19 05:55:00,634 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 05:55:00,655 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 05:55:00,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 564 transitions, 1144 flow [2024-11-19 05:55:00,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 564 transitions, 1144 flow [2024-11-19 05:55:00,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:55:00,671 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;@74131ae9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:55:00,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-11-19 05:55:00,681 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:55:00,681 INFO L124 PetriNetUnfolderBase]: 4/119 cut-off events. [2024-11-19 05:55:00,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:55:00,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:55:00,682 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 05:55:00,683 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 05:55:00,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:55:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1276581519, now seen corresponding path program 1 times [2024-11-19 05:55:00,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:55:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820002059] [2024-11-19 05:55:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:55:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:55:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:55:00,741 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 05:55:00,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:55:00,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820002059] [2024-11-19 05:55:00,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820002059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:55:00,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:55:00,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:55:00,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894388969] [2024-11-19 05:55:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:55:00,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:55:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:55:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:55:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:55:00,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 564 [2024-11-19 05:55:00,755 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 05:55:00,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:55:00,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 564 [2024-11-19 05:55:00,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:55:04,147 INFO L124 PetriNetUnfolderBase]: 3251/22887 cut-off events. [2024-11-19 05:55:04,147 INFO L125 PetriNetUnfolderBase]: For 153/157 co-relation queries the response was YES. [2024-11-19 05:55:04,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27667 conditions, 22887 events. 3251/22887 cut-off events. For 153/157 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 05:55:04,326 INFO L140 encePairwiseOnDemand]: 507/564 looper letters, 41 selfloop transitions, 2 changer transitions 0/503 dead transitions. [2024-11-19 05:55:04,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 503 transitions, 1108 flow [2024-11-19 05:55:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:55:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:55:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1491 transitions. [2024-11-19 05:55:04,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8812056737588653 [2024-11-19 05:55:04,332 INFO L175 Difference]: Start difference. First operand has 505 places, 564 transitions, 1144 flow. Second operand 3 states and 1491 transitions. [2024-11-19 05:55:04,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 503 transitions, 1108 flow [2024-11-19 05:55:04,338 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 05:55:04,345 INFO L231 Difference]: Finished difference. Result has 500 places, 503 transitions, 1032 flow [2024-11-19 05:55:04,346 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 05:55:04,348 INFO L277 CegarLoopForPetriNet]: 505 programPoint places, -5 predicate places. [2024-11-19 05:55:04,348 INFO L471 AbstractCegarLoop]: Abstraction has has 500 places, 503 transitions, 1032 flow [2024-11-19 05:55:04,349 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 05:55:04,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:55:04,349 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 05:55:04,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 05:55:04,349 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 05:55:04,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:55:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1040883535, now seen corresponding path program 1 times [2024-11-19 05:55:04,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:55:04,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823026097] [2024-11-19 05:55:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:55:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:55:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:55:04,437 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 05:55:04,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:55:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823026097] [2024-11-19 05:55:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823026097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:55:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380939159] [2024-11-19 05:55:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:55:04,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:55:04,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:55:04,441 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 05:55:04,442 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 05:55:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:55:04,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 05:55:04,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:55:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:55:04,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 05:55:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:55:04,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380939159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 05:55:04,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 05:55:04,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-19 05:55:04,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576511202] [2024-11-19 05:55:04,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 05:55:04,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 05:55:04,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:55:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 05:55:04,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 05:55:04,652 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 461 out of 564 [2024-11-19 05:55:04,656 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 05:55:04,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:55:04,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 461 of 564 [2024-11-19 05:55:04,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:55:08,398 INFO L124 PetriNetUnfolderBase]: 3251/22894 cut-off events. [2024-11-19 05:55:08,398 INFO L125 PetriNetUnfolderBase]: For 150/154 co-relation queries the response was YES. [2024-11-19 05:55:08,481 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 05:55:08,559 INFO L140 encePairwiseOnDemand]: 558/564 looper letters, 45 selfloop transitions, 9 changer transitions 0/511 dead transitions. [2024-11-19 05:55:08,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 511 transitions, 1158 flow [2024-11-19 05:55:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 05:55:08,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 05:55:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4205 transitions. [2024-11-19 05:55:08,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.828408195429472 [2024-11-19 05:55:08,573 INFO L175 Difference]: Start difference. First operand has 500 places, 503 transitions, 1032 flow. Second operand 9 states and 4205 transitions. [2024-11-19 05:55:08,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 511 transitions, 1158 flow [2024-11-19 05:55:08,577 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 05:55:08,582 INFO L231 Difference]: Finished difference. Result has 510 places, 509 transitions, 1080 flow [2024-11-19 05:55:08,584 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 05:55:08,586 INFO L277 CegarLoopForPetriNet]: 505 programPoint places, 5 predicate places. [2024-11-19 05:55:08,586 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 509 transitions, 1080 flow [2024-11-19 05:55:08,588 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 05:55:08,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:55:08,589 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 05:55:08,609 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 05:55:08,790 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 05:55:08,791 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 05:55:08,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:55:08,792 INFO L85 PathProgramCache]: Analyzing trace with hash -505175183, now seen corresponding path program 2 times [2024-11-19 05:55:08,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:55:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466267847] [2024-11-19 05:55:08,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 05:55:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:55:08,816 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 05:55:08,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 05:55:09,220 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 05:55:09,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:55:09,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466267847] [2024-11-19 05:55:09,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466267847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:55:09,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:55:09,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 05:55:09,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571449013] [2024-11-19 05:55:09,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:55:09,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:55:09,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:55:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:55:09,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:55:09,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 564 [2024-11-19 05:55:09,702 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 05:55:09,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:55:09,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 564 [2024-11-19 05:55:09,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand