./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version c7c6ca5d 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/pthread-ext/09_fmaxsym.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 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:30:42,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:30:42,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-09 06:30:42,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:30:42,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:30:42,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:30:42,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:30:42,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:30:42,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:30:42,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:30:42,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:30:42,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:30:42,279 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:30:42,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:30:42,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:30:42,280 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:30:42,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:30:42,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:30:42,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:30:42,281 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:30:42,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:30:42,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:30:42,285 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-09 06:30:42,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:30:42,290 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:30:42,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:30:42,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:30:42,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:30:42,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:30:42,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:30:42,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:30:42,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:30:42,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:30:42,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:30:42,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:30:42,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:30:42,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:30:42,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:30:42,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:30:42,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:30:42,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:30:42,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ce2a912f26c96a7a9e9698d6a341c03f1dcacccb179d06c2396dd9f137bcbd1 [2024-11-09 06:30:42,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:30:42,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:30:42,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:30:42,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:30:42,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:30:42,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-09 06:30:44,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:30:44,557 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:30:44,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2024-11-09 06:30:44,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11327af5/264be42c4bcc4e348a56bbea1b33a588/FLAG2666e3584 [2024-11-09 06:30:44,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11327af5/264be42c4bcc4e348a56bbea1b33a588 [2024-11-09 06:30:44,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:30:44,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:30:44,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:30:44,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:30:44,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:30:44,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:30:44" (1/1) ... [2024-11-09 06:30:44,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f319975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:44, skipping insertion in model container [2024-11-09 06:30:44,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:30:44" (1/1) ... [2024-11-09 06:30:44,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:30:45,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:30:45,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:30:45,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:30:45,199 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:30:45,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45 WrapperNode [2024-11-09 06:30:45,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:30:45,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:30:45,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:30:45,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:30:45,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,264 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 112 [2024-11-09 06:30:45,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:30:45,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:30:45,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:30:45,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:30:45,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:30:45,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:30:45,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:30:45,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:30:45,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (1/1) ... [2024-11-09 06:30:45,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:30:45,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:45,369 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) [2024-11-09 06:30:45,373 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 [2024-11-09 06:30:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:30:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 06:30:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 06:30:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:30:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 06:30:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:30:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:30:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 06:30:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:30:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:30:45,431 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 06:30:45,567 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:30:45,569 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:30:45,835 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 06:30:45,836 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:30:45,873 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:30:45,873 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 06:30:45,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:30:45 BoogieIcfgContainer [2024-11-09 06:30:45,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:30:45,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:30:45,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:30:45,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:30:45,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:30:44" (1/3) ... [2024-11-09 06:30:45,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:30:45, skipping insertion in model container [2024-11-09 06:30:45,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:30:45" (2/3) ... [2024-11-09 06:30:45,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:30:45, skipping insertion in model container [2024-11-09 06:30:45,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:30:45" (3/3) ... [2024-11-09 06:30:45,884 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2024-11-09 06:30:45,903 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:30:45,903 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-09 06:30:45,905 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 06:30:46,008 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:46,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 124 transitions, 252 flow [2024-11-09 06:30:46,148 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2024-11-09 06:30:46,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:46,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 133 events. 10/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2024-11-09 06:30:46,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 124 transitions, 252 flow [2024-11-09 06:30:46,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 124 transitions, 252 flow [2024-11-09 06:30:46,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:46,193 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;@651b56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:46,195 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-09 06:30:46,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:46,218 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:46,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:46,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:46,239 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] [2024-11-09 06:30:46,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -240468847, now seen corresponding path program 1 times [2024-11-09 06:30:46,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:46,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118429403] [2024-11-09 06:30:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:47,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:47,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118429403] [2024-11-09 06:30:47,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118429403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:47,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:47,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201120303] [2024-11-09 06:30:47,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:47,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:47,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:47,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:47,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2024-11-09 06:30:47,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:30:47,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:47,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2024-11-09 06:30:47,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:47,653 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-11-09 06:30:47,653 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 06:30:47,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 115 events. 3/115 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 15/121 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2024-11-09 06:30:47,657 INFO L140 encePairwiseOnDemand]: 111/124 looper letters, 15 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-11-09 06:30:47,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 266 flow [2024-11-09 06:30:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 592 transitions. [2024-11-09 06:30:47,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2024-11-09 06:30:47,681 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 252 flow. Second operand 6 states and 592 transitions. [2024-11-09 06:30:47,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 266 flow [2024-11-09 06:30:47,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:47,693 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 236 flow [2024-11-09 06:30:47,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2024-11-09 06:30:47,706 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-11-09 06:30:47,706 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 236 flow [2024-11-09 06:30:47,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:30:47,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:47,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:47,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:30:47,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:47,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash -587319925, now seen corresponding path program 1 times [2024-11-09 06:30:47,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:47,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569005496] [2024-11-09 06:30:47,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569005496] [2024-11-09 06:30:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569005496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484931314] [2024-11-09 06:30:47,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:47,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:47,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:47,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 124 [2024-11-09 06:30:47,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-11-09 06:30:47,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:47,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 124 [2024-11-09 06:30:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:47,906 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2024-11-09 06:30:47,907 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 06:30:47,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 127 events. 3/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2024-11-09 06:30:47,909 INFO L140 encePairwiseOnDemand]: 121/124 looper letters, 9 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-09 06:30:47,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 262 flow [2024-11-09 06:30:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-11-09 06:30:47,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2024-11-09 06:30:47,912 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 236 flow. Second operand 3 states and 327 transitions. [2024-11-09 06:30:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 262 flow [2024-11-09 06:30:47,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:47,917 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 238 flow [2024-11-09 06:30:47,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-11-09 06:30:47,918 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-11-09 06:30:47,918 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 238 flow [2024-11-09 06:30:47,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-11-09 06:30:47,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:47,919 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:47,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:30:47,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:47,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1497332229, now seen corresponding path program 1 times [2024-11-09 06:30:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724701939] [2024-11-09 06:30:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:48,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724701939] [2024-11-09 06:30:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724701939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507065433] [2024-11-09 06:30:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:48,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:48,051 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) [2024-11-09 06:30:48,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:30:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:48,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:48,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:48,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:48,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507065433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:48,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393613446] [2024-11-09 06:30:48,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:48,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:48,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:48,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:48,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:48,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-11-09 06:30:48,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 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) [2024-11-09 06:30:48,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:48,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-11-09 06:30:48,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:48,505 INFO L124 PetriNetUnfolderBase]: 3/142 cut-off events. [2024-11-09 06:30:48,506 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 06:30:48,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 142 events. 3/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 11 conditions per place. [2024-11-09 06:30:48,509 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 13 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-11-09 06:30:48,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 300 flow [2024-11-09 06:30:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:48,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 942 transitions. [2024-11-09 06:30:48,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8440860215053764 [2024-11-09 06:30:48,516 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 238 flow. Second operand 9 states and 942 transitions. [2024-11-09 06:30:48,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 300 flow [2024-11-09 06:30:48,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:48,522 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 286 flow [2024-11-09 06:30:48,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-11-09 06:30:48,524 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-11-09 06:30:48,525 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 286 flow [2024-11-09 06:30:48,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 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) [2024-11-09 06:30:48,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:48,526 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:30:48,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:48,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:48,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:48,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1309340731, now seen corresponding path program 2 times [2024-11-09 06:30:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644189346] [2024-11-09 06:30:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644189346] [2024-11-09 06:30:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644189346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677441869] [2024-11-09 06:30:48,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:48,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:48,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:48,979 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) [2024-11-09 06:30:48,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:30:49,091 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:30:49,091 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:49,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:30:49,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:49,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 06:30:49,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677441869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:49,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:30:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088672595] [2024-11-09 06:30:49,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:49,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:30:49,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:49,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:30:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:30:49,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-11-09 06:30:49,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 286 flow. Second operand has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 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) [2024-11-09 06:30:49,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:49,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-11-09 06:30:49,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:49,679 INFO L124 PetriNetUnfolderBase]: 3/181 cut-off events. [2024-11-09 06:30:49,679 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-09 06:30:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 181 events. 3/181 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-11-09 06:30:49,681 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 16 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-11-09 06:30:49,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 428 flow [2024-11-09 06:30:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:30:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1873 transitions. [2024-11-09 06:30:49,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.83915770609319 [2024-11-09 06:30:49,688 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 286 flow. Second operand 18 states and 1873 transitions. [2024-11-09 06:30:49,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 428 flow [2024-11-09 06:30:49,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:49,693 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 386 flow [2024-11-09 06:30:49,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=386, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-11-09 06:30:49,695 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-11-09 06:30:49,695 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 386 flow [2024-11-09 06:30:49,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 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) [2024-11-09 06:30:49,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:49,697 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-11-09 06:30:49,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:49,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 06:30:49,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-09 06:30:49,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1738405813, now seen corresponding path program 3 times [2024-11-09 06:30:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783202993] [2024-11-09 06:30:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:49,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:49,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:30:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:50,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:30:50,044 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:30:50,046 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-09 06:30:50,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-09 06:30:50,067 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-09 06:30:50,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-09 06:30:50,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-09 06:30:50,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-09 06:30:50,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-09 06:30:50,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-09 06:30:50,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-09 06:30:50,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-09 06:30:50,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:30:50,070 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:30:50,074 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:30:50,074 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 06:30:50,113 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:50,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 193 transitions, 396 flow [2024-11-09 06:30:50,140 INFO L124 PetriNetUnfolderBase]: 17/213 cut-off events. [2024-11-09 06:30:50,140 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 06:30:50,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 213 events. 17/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 390 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2024-11-09 06:30:50,143 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 193 transitions, 396 flow [2024-11-09 06:30:50,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 193 transitions, 396 flow [2024-11-09 06:30:50,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:50,148 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;@651b56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:50,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-09 06:30:50,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:50,153 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:50,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:50,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:50,154 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] [2024-11-09 06:30:50,154 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:50,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713394, now seen corresponding path program 1 times [2024-11-09 06:30:50,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:50,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364779116] [2024-11-09 06:30:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:50,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364779116] [2024-11-09 06:30:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364779116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:50,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:50,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288640928] [2024-11-09 06:30:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:50,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:50,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:50,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:50,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 193 [2024-11-09 06:30:50,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 193 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 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) [2024-11-09 06:30:50,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:50,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 193 [2024-11-09 06:30:50,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:50,727 INFO L124 PetriNetUnfolderBase]: 104/729 cut-off events. [2024-11-09 06:30:50,727 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 06:30:50,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 729 events. 104/729 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3762 event pairs, 72 based on Foata normal form. 162/784 useless extension candidates. Maximal degree in co-relation 670. Up to 185 conditions per place. [2024-11-09 06:30:50,736 INFO L140 encePairwiseOnDemand]: 176/193 looper letters, 24 selfloop transitions, 5 changer transitions 0/174 dead transitions. [2024-11-09 06:30:50,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 416 flow [2024-11-09 06:30:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:50,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2024-11-09 06:30:50,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8074265975820379 [2024-11-09 06:30:50,739 INFO L175 Difference]: Start difference. First operand has 183 places, 193 transitions, 396 flow. Second operand 6 states and 935 transitions. [2024-11-09 06:30:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 416 flow [2024-11-09 06:30:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:50,743 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 368 flow [2024-11-09 06:30:50,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-11-09 06:30:50,744 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-11-09 06:30:50,744 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 368 flow [2024-11-09 06:30:50,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 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) [2024-11-09 06:30:50,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:50,745 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:50,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:30:50,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:50,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1555781261, now seen corresponding path program 1 times [2024-11-09 06:30:50,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:50,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31236355] [2024-11-09 06:30:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:50,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31236355] [2024-11-09 06:30:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31236355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:50,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980266565] [2024-11-09 06:30:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:50,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:50,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:50,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 193 [2024-11-09 06:30:50,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2024-11-09 06:30:50,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:50,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 193 [2024-11-09 06:30:50,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:50,893 INFO L124 PetriNetUnfolderBase]: 33/496 cut-off events. [2024-11-09 06:30:50,894 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-09 06:30:50,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 496 events. 33/496 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2022 event pairs, 20 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 521. Up to 56 conditions per place. [2024-11-09 06:30:50,899 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2024-11-09 06:30:50,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 404 flow [2024-11-09 06:30:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-11-09 06:30:50,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791018998272885 [2024-11-09 06:30:50,901 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 368 flow. Second operand 3 states and 509 transitions. [2024-11-09 06:30:50,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 404 flow [2024-11-09 06:30:50,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:50,905 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 370 flow [2024-11-09 06:30:50,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2024-11-09 06:30:50,906 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-11-09 06:30:50,907 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 370 flow [2024-11-09 06:30:50,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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) [2024-11-09 06:30:50,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:50,907 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:50,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:30:50,908 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:50,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash 846948760, now seen corresponding path program 1 times [2024-11-09 06:30:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:50,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96260646] [2024-11-09 06:30:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:50,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:50,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:50,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96260646] [2024-11-09 06:30:50,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96260646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:50,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030893580] [2024-11-09 06:30:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:50,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:50,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:50,981 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) [2024-11-09 06:30:50,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:30:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:51,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:51,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:51,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030893580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:51,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375322571] [2024-11-09 06:30:51,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:51,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:51,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-11-09 06:30:51,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 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) [2024-11-09 06:30:51,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:51,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-11-09 06:30:51,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:51,447 INFO L124 PetriNetUnfolderBase]: 33/511 cut-off events. [2024-11-09 06:30:51,447 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 06:30:51,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 511 events. 33/511 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 556. Up to 56 conditions per place. [2024-11-09 06:30:51,451 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 18 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2024-11-09 06:30:51,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 442 flow [2024-11-09 06:30:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2024-11-09 06:30:51,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8508923431203224 [2024-11-09 06:30:51,456 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 370 flow. Second operand 9 states and 1478 transitions. [2024-11-09 06:30:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 442 flow [2024-11-09 06:30:51,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:51,460 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 418 flow [2024-11-09 06:30:51,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-11-09 06:30:51,461 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-11-09 06:30:51,462 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 418 flow [2024-11-09 06:30:51,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 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) [2024-11-09 06:30:51,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:51,464 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 06:30:51,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:30:51,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:51,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:51,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -196544136, now seen corresponding path program 2 times [2024-11-09 06:30:51,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992912889] [2024-11-09 06:30:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:51,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:51,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992912889] [2024-11-09 06:30:51,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992912889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:51,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623820536] [2024-11-09 06:30:51,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:51,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:51,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:51,842 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) [2024-11-09 06:30:51,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:30:51,947 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:30:51,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:51,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:30:51,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:52,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 06:30:52,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623820536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:52,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:52,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:30:52,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566172776] [2024-11-09 06:30:52,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:52,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:30:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:30:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:30:52,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-11-09 06:30:52,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 418 flow. Second operand has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 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) [2024-11-09 06:30:52,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:52,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-11-09 06:30:52,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:52,531 INFO L124 PetriNetUnfolderBase]: 33/550 cut-off events. [2024-11-09 06:30:52,532 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-11-09 06:30:52,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 550 events. 33/550 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 3/504 useless extension candidates. Maximal degree in co-relation 518. Up to 56 conditions per place. [2024-11-09 06:30:52,538 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 21 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2024-11-09 06:30:52,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 195 transitions, 570 flow [2024-11-09 06:30:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:30:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2940 transitions. [2024-11-09 06:30:52,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.846286701208981 [2024-11-09 06:30:52,545 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 418 flow. Second operand 18 states and 2940 transitions. [2024-11-09 06:30:52,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 195 transitions, 570 flow [2024-11-09 06:30:52,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:52,550 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 518 flow [2024-11-09 06:30:52,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=518, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-11-09 06:30:52,551 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-11-09 06:30:52,551 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 518 flow [2024-11-09 06:30:52,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 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) [2024-11-09 06:30:52,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:52,553 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2024-11-09 06:30:52,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:52,754 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 [2024-11-09 06:30:52,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-09 06:30:52,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:52,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1436573139, now seen corresponding path program 3 times [2024-11-09 06:30:52,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:52,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333086390] [2024-11-09 06:30:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:52,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:52,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:30:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:52,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:30:52,858 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:30:52,858 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-09 06:30:52,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-09 06:30:52,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-09 06:30:52,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-09 06:30:52,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-09 06:30:52,859 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-09 06:30:52,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-09 06:30:52,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-09 06:30:52,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-09 06:30:52,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-09 06:30:52,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-09 06:30:52,860 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-09 06:30:52,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-09 06:30:52,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-09 06:30:52,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 06:30:52,861 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:30:52,862 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:30:52,862 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 06:30:52,907 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:52,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 542 flow [2024-11-09 06:30:52,947 INFO L124 PetriNetUnfolderBase]: 24/293 cut-off events. [2024-11-09 06:30:52,947 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 06:30:52,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 293 events. 24/293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 753 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2024-11-09 06:30:52,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 542 flow [2024-11-09 06:30:52,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 262 transitions, 542 flow [2024-11-09 06:30:52,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:52,956 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;@651b56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:52,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-09 06:30:52,960 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:52,960 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:52,960 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:52,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:52,960 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] [2024-11-09 06:30:52,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:52,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash -9858184, now seen corresponding path program 1 times [2024-11-09 06:30:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:52,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550390763] [2024-11-09 06:30:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550390763] [2024-11-09 06:30:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550390763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604201707] [2024-11-09 06:30:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:53,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:53,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:53,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2024-11-09 06:30:53,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 262 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 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) [2024-11-09 06:30:53,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:53,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2024-11-09 06:30:53,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:54,555 INFO L124 PetriNetUnfolderBase]: 1746/6799 cut-off events. [2024-11-09 06:30:54,555 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-11-09 06:30:54,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 6799 events. 1746/6799 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 66614 event pairs, 1368 based on Foata normal form. 1870/7599 useless extension candidates. Maximal degree in co-relation 6430. Up to 2449 conditions per place. [2024-11-09 06:30:54,651 INFO L140 encePairwiseOnDemand]: 241/262 looper letters, 33 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-11-09 06:30:54,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 568 flow [2024-11-09 06:30:54,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:30:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:30:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2024-11-09 06:30:54,655 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8129770992366412 [2024-11-09 06:30:54,655 INFO L175 Difference]: Start difference. First operand has 248 places, 262 transitions, 542 flow. Second operand 6 states and 1278 transitions. [2024-11-09 06:30:54,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 568 flow [2024-11-09 06:30:54,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 06:30:54,661 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 500 flow [2024-11-09 06:30:54,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2024-11-09 06:30:54,663 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-11-09 06:30:54,663 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 500 flow [2024-11-09 06:30:54,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 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) [2024-11-09 06:30:54,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:54,665 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:54,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 06:30:54,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:54,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1070750038, now seen corresponding path program 1 times [2024-11-09 06:30:54,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:54,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537022038] [2024-11-09 06:30:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:54,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537022038] [2024-11-09 06:30:54,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537022038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:54,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:54,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:30:54,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261695127] [2024-11-09 06:30:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:54,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:30:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:30:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:30:54,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 262 [2024-11-09 06:30:54,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2024-11-09 06:30:54,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:54,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 262 [2024-11-09 06:30:54,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:55,171 INFO L124 PetriNetUnfolderBase]: 283/2441 cut-off events. [2024-11-09 06:30:55,172 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-09 06:30:55,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 2441 events. 283/2441 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20042 event pairs, 220 based on Foata normal form. 1/2187 useless extension candidates. Maximal degree in co-relation 2866. Up to 381 conditions per place. [2024-11-09 06:30:55,214 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 19 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-11-09 06:30:55,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 238 transitions, 546 flow [2024-11-09 06:30:55,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:30:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:30:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2024-11-09 06:30:55,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791348600508906 [2024-11-09 06:30:55,218 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 500 flow. Second operand 3 states and 691 transitions. [2024-11-09 06:30:55,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 238 transitions, 546 flow [2024-11-09 06:30:55,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:30:55,223 INFO L231 Difference]: Finished difference. Result has 240 places, 238 transitions, 502 flow [2024-11-09 06:30:55,224 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=240, PETRI_TRANSITIONS=238} [2024-11-09 06:30:55,224 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-11-09 06:30:55,225 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 238 transitions, 502 flow [2024-11-09 06:30:55,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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) [2024-11-09 06:30:55,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:55,226 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:55,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:30:55,226 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:55,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2021498603, now seen corresponding path program 1 times [2024-11-09 06:30:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713513893] [2024-11-09 06:30:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713513893] [2024-11-09 06:30:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713513893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778756755] [2024-11-09 06:30:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:55,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:55,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:55,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:30:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:55,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:30:55,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:55,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778756755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:55,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:55,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:30:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893883330] [2024-11-09 06:30:55,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:55,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:30:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:30:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:30:55,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-11-09 06:30:55,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 238 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 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) [2024-11-09 06:30:55,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:55,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-11-09 06:30:55,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:56,030 INFO L124 PetriNetUnfolderBase]: 283/2456 cut-off events. [2024-11-09 06:30:56,030 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-09 06:30:56,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 2456 events. 283/2456 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19940 event pairs, 220 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 2901. Up to 381 conditions per place. [2024-11-09 06:30:56,056 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 23 selfloop transitions, 9 changer transitions 0/246 dead transitions. [2024-11-09 06:30:56,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 584 flow [2024-11-09 06:30:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:30:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:30:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2014 transitions. [2024-11-09 06:30:56,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8541136556403732 [2024-11-09 06:30:56,062 INFO L175 Difference]: Start difference. First operand has 240 places, 238 transitions, 502 flow. Second operand 9 states and 2014 transitions. [2024-11-09 06:30:56,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 584 flow [2024-11-09 06:30:56,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:56,067 INFO L231 Difference]: Finished difference. Result has 250 places, 244 transitions, 550 flow [2024-11-09 06:30:56,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=250, PETRI_TRANSITIONS=244} [2024-11-09 06:30:56,068 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-11-09 06:30:56,069 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 244 transitions, 550 flow [2024-11-09 06:30:56,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 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) [2024-11-09 06:30:56,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:56,070 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:30:56,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 06:30:56,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 06:30:56,275 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:56,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash 646975819, now seen corresponding path program 2 times [2024-11-09 06:30:56,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:56,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752572521] [2024-11-09 06:30:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:56,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:56,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:56,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752572521] [2024-11-09 06:30:56,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752572521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:30:56,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514484470] [2024-11-09 06:30:56,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:30:56,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:56,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:30:56,440 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:30:56,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:30:56,560 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 06:30:56,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:30:56,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:30:56,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:30:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:56,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:30:56,768 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 06:30:56,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514484470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:30:56,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:30:56,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:30:56,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915532519] [2024-11-09 06:30:56,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:30:56,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:30:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:30:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:30:56,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-11-09 06:30:56,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 244 transitions, 550 flow. Second operand has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 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) [2024-11-09 06:30:56,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:56,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-11-09 06:30:56,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:30:57,647 INFO L124 PetriNetUnfolderBase]: 283/2495 cut-off events. [2024-11-09 06:30:57,647 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-11-09 06:30:57,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2495 events. 283/2495 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19938 event pairs, 220 based on Foata normal form. 3/2243 useless extension candidates. Maximal degree in co-relation 2863. Up to 381 conditions per place. [2024-11-09 06:30:57,689 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 26 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-11-09 06:30:57,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 258 transitions, 712 flow [2024-11-09 06:30:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:30:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:30:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4007 transitions. [2024-11-09 06:30:57,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496607294317218 [2024-11-09 06:30:57,704 INFO L175 Difference]: Start difference. First operand has 250 places, 244 transitions, 550 flow. Second operand 18 states and 4007 transitions. [2024-11-09 06:30:57,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 258 transitions, 712 flow [2024-11-09 06:30:57,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 258 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 06:30:57,712 INFO L231 Difference]: Finished difference. Result has 270 places, 254 transitions, 650 flow [2024-11-09 06:30:57,712 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=650, PETRI_PLACES=270, PETRI_TRANSITIONS=254} [2024-11-09 06:30:57,714 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-11-09 06:30:57,714 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 254 transitions, 650 flow [2024-11-09 06:30:57,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 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) [2024-11-09 06:30:57,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:57,717 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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] [2024-11-09 06:30:57,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:30:57,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:30:57,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-09 06:30:57,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1702814602, now seen corresponding path program 3 times [2024-11-09 06:30:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:57,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529247145] [2024-11-09 06:30:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:57,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:57,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:30:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:30:58,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:30:58,037 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:30:58,037 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-09 06:30:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-09 06:30:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-09 06:30:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-09 06:30:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-09 06:30:58,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-09 06:30:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-09 06:30:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-09 06:30:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-09 06:30:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-09 06:30:58,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-09 06:30:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-09 06:30:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-09 06:30:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-09 06:30:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-09 06:30:58,040 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-09 06:30:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-09 06:30:58,041 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-09 06:30:58,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 06:30:58,041 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-09 06:30:58,042 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:30:58,042 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 06:30:58,091 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:30:58,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 331 transitions, 690 flow [2024-11-09 06:30:58,168 INFO L124 PetriNetUnfolderBase]: 31/373 cut-off events. [2024-11-09 06:30:58,169 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 06:30:58,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 373 events. 31/373 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1155 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 301. Up to 10 conditions per place. [2024-11-09 06:30:58,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 331 transitions, 690 flow [2024-11-09 06:30:58,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 331 transitions, 690 flow [2024-11-09 06:30:58,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:30:58,181 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;@651b56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:30:58,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-09 06:30:58,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:30:58,184 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:30:58,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:30:58,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:30:58,185 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] [2024-11-09 06:30:58,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:30:58,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:30:58,185 INFO L85 PathProgramCache]: Analyzing trace with hash 176783715, now seen corresponding path program 1 times [2024-11-09 06:30:58,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:30:58,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860344876] [2024-11-09 06:30:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:30:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:30:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:30:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:30:58,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:30:58,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860344876] [2024-11-09 06:30:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860344876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:30:58,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:30:58,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:30:58,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181929244] [2024-11-09 06:30:58,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:30:58,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:30:58,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:30:58,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:30:58,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:30:58,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 331 [2024-11-09 06:30:58,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 331 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2024-11-09 06:30:58,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:30:58,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 331 [2024-11-09 06:30:58,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:10,151 INFO L124 PetriNetUnfolderBase]: 23093/67620 cut-off events. [2024-11-09 06:31:10,152 INFO L125 PetriNetUnfolderBase]: For 7852/7852 co-relation queries the response was YES. [2024-11-09 06:31:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101042 conditions, 67620 events. 23093/67620 cut-off events. For 7852/7852 co-relation queries the response was YES. Maximal size of possible extension queue 1858. Compared 896187 event pairs, 18864 based on Foata normal form. 20917/78635 useless extension candidates. Maximal degree in co-relation 60574. Up to 29414 conditions per place. [2024-11-09 06:31:11,621 INFO L140 encePairwiseOnDemand]: 306/331 looper letters, 42 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2024-11-09 06:31:11,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 300 transitions, 722 flow [2024-11-09 06:31:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2024-11-09 06:31:11,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8162134944612286 [2024-11-09 06:31:11,627 INFO L175 Difference]: Start difference. First operand has 313 places, 331 transitions, 690 flow. Second operand 6 states and 1621 transitions. [2024-11-09 06:31:11,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 300 transitions, 722 flow [2024-11-09 06:31:11,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 300 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 06:31:11,635 INFO L231 Difference]: Finished difference. Result has 305 places, 300 transitions, 632 flow [2024-11-09 06:31:11,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=305, PETRI_TRANSITIONS=300} [2024-11-09 06:31:11,637 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-11-09 06:31:11,639 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 300 transitions, 632 flow [2024-11-09 06:31:11,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2024-11-09 06:31:11,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:11,640 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] [2024-11-09 06:31:11,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 06:31:11,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:11,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash 388618173, now seen corresponding path program 1 times [2024-11-09 06:31:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072961780] [2024-11-09 06:31:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:11,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:11,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:11,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072961780] [2024-11-09 06:31:11,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072961780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:11,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:11,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:31:11,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014703613] [2024-11-09 06:31:11,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:11,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:31:11,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:31:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:31:11,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 331 [2024-11-09 06:31:11,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 300 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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) [2024-11-09 06:31:11,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:11,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 331 [2024-11-09 06:31:11,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:14,063 INFO L124 PetriNetUnfolderBase]: 2033/12666 cut-off events. [2024-11-09 06:31:14,063 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-11-09 06:31:14,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15656 conditions, 12666 events. 2033/12666 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149755 event pairs, 1720 based on Foata normal form. 1/11381 useless extension candidates. Maximal degree in co-relation 15591. Up to 2506 conditions per place. [2024-11-09 06:31:14,264 INFO L140 encePairwiseOnDemand]: 328/331 looper letters, 24 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2024-11-09 06:31:14,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 301 transitions, 688 flow [2024-11-09 06:31:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:31:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 06:31:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2024-11-09 06:31:14,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.879154078549849 [2024-11-09 06:31:14,267 INFO L175 Difference]: Start difference. First operand has 305 places, 300 transitions, 632 flow. Second operand 3 states and 873 transitions. [2024-11-09 06:31:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 301 transitions, 688 flow [2024-11-09 06:31:14,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 301 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:14,277 INFO L231 Difference]: Finished difference. Result has 303 places, 301 transitions, 634 flow [2024-11-09 06:31:14,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=303, PETRI_TRANSITIONS=301} [2024-11-09 06:31:14,279 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-11-09 06:31:14,279 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 301 transitions, 634 flow [2024-11-09 06:31:14,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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) [2024-11-09 06:31:14,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:14,280 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] [2024-11-09 06:31:14,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 06:31:14,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:14,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash 748736817, now seen corresponding path program 1 times [2024-11-09 06:31:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:14,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118671745] [2024-11-09 06:31:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118671745] [2024-11-09 06:31:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118671745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268912416] [2024-11-09 06:31:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:14,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:14,369 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:14,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:31:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:14,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:31:14,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:14,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:14,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:14,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268912416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:14,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:14,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-09 06:31:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534450614] [2024-11-09 06:31:14,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:14,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:31:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:14,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:31:14,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:31:14,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-11-09 06:31:14,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 301 transitions, 634 flow. Second operand has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 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) [2024-11-09 06:31:14,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:14,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-11-09 06:31:14,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:16,631 INFO L124 PetriNetUnfolderBase]: 2033/12681 cut-off events. [2024-11-09 06:31:16,631 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-11-09 06:31:16,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15679 conditions, 12681 events. 2033/12681 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149708 event pairs, 1720 based on Foata normal form. 2/11397 useless extension candidates. Maximal degree in co-relation 15626. Up to 2506 conditions per place. [2024-11-09 06:31:16,820 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 28 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2024-11-09 06:31:16,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 309 transitions, 726 flow [2024-11-09 06:31:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:31:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 06:31:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2550 transitions. [2024-11-09 06:31:16,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8559919436052367 [2024-11-09 06:31:16,825 INFO L175 Difference]: Start difference. First operand has 303 places, 301 transitions, 634 flow. Second operand 9 states and 2550 transitions. [2024-11-09 06:31:16,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 309 transitions, 726 flow [2024-11-09 06:31:16,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:16,839 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 682 flow [2024-11-09 06:31:16,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2024-11-09 06:31:16,840 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 0 predicate places. [2024-11-09 06:31:16,840 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 682 flow [2024-11-09 06:31:16,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 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) [2024-11-09 06:31:16,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:16,844 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:16,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:31:17,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:17,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:17,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1736235855, now seen corresponding path program 2 times [2024-11-09 06:31:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354390127] [2024-11-09 06:31:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354390127] [2024-11-09 06:31:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354390127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609136397] [2024-11-09 06:31:17,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:31:17,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:17,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:17,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:17,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:31:17,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:31:17,348 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:31:17,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:31:17,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:17,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 06:31:17,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-09 06:31:17,445 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:31:17,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-09 06:31:17,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:31:17,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-09 06:31:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-09 06:31:17,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:31:17,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609136397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:17,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:31:17,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-09 06:31:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519227203] [2024-11-09 06:31:17,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:17,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:17,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:17,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:31:17,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2024-11-09 06:31:17,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 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) [2024-11-09 06:31:17,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:17,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2024-11-09 06:31:17,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:22,279 INFO L124 PetriNetUnfolderBase]: 6000/23864 cut-off events. [2024-11-09 06:31:22,279 INFO L125 PetriNetUnfolderBase]: For 2301/2301 co-relation queries the response was YES. [2024-11-09 06:31:22,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33119 conditions, 23864 events. 6000/23864 cut-off events. For 2301/2301 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 297495 event pairs, 2095 based on Foata normal form. 0/21342 useless extension candidates. Maximal degree in co-relation 33009. Up to 3186 conditions per place. [2024-11-09 06:31:22,545 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 90 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2024-11-09 06:31:22,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 366 transitions, 1050 flow [2024-11-09 06:31:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:31:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 06:31:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1728 transitions. [2024-11-09 06:31:22,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8700906344410876 [2024-11-09 06:31:22,548 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 682 flow. Second operand 6 states and 1728 transitions. [2024-11-09 06:31:22,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 366 transitions, 1050 flow [2024-11-09 06:31:22,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 366 transitions, 1044 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 06:31:22,558 INFO L231 Difference]: Finished difference. Result has 316 places, 306 transitions, 684 flow [2024-11-09 06:31:22,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=316, PETRI_TRANSITIONS=306} [2024-11-09 06:31:22,559 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 3 predicate places. [2024-11-09 06:31:22,560 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 306 transitions, 684 flow [2024-11-09 06:31:22,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 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) [2024-11-09 06:31:22,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:22,561 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:22,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:31:22,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:22,762 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:22,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1461545599, now seen corresponding path program 1 times [2024-11-09 06:31:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:22,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768625525] [2024-11-09 06:31:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:22,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:22,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768625525] [2024-11-09 06:31:22,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768625525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:31:22,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097524331] [2024-11-09 06:31:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:22,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:22,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:31:22,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:31:22,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:31:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:23,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 06:31:23,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:31:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:23,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:31:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-09 06:31:23,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097524331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:31:23,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:31:23,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-09 06:31:23,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203277887] [2024-11-09 06:31:23,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:31:23,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:31:23,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:23,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:31:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:31:23,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-11-09 06:31:23,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 306 transitions, 684 flow. Second operand has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 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) [2024-11-09 06:31:23,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:23,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-11-09 06:31:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 06:31:25,931 INFO L124 PetriNetUnfolderBase]: 2033/12719 cut-off events. [2024-11-09 06:31:25,931 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2024-11-09 06:31:26,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15771 conditions, 12719 events. 2033/12719 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149693 event pairs, 1720 based on Foata normal form. 3/11437 useless extension candidates. Maximal degree in co-relation 15592. Up to 2506 conditions per place. [2024-11-09 06:31:26,077 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 31 selfloop transitions, 18 changer transitions 0/320 dead transitions. [2024-11-09 06:31:26,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 320 transitions, 850 flow [2024-11-09 06:31:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 06:31:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 06:31:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5074 transitions. [2024-11-09 06:31:26,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8516280631084256 [2024-11-09 06:31:26,086 INFO L175 Difference]: Start difference. First operand has 316 places, 306 transitions, 684 flow. Second operand 18 states and 5074 transitions. [2024-11-09 06:31:26,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 320 transitions, 850 flow [2024-11-09 06:31:26,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 840 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 06:31:26,098 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 780 flow [2024-11-09 06:31:26,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2024-11-09 06:31:26,100 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 19 predicate places. [2024-11-09 06:31:26,100 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 780 flow [2024-11-09 06:31:26,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 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) [2024-11-09 06:31:26,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:26,103 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:31:26,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:31:26,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:31:26,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-09 06:31:26,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -792654581, now seen corresponding path program 2 times [2024-11-09 06:31:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183742226] [2024-11-09 06:31:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:26,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:31:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:31:26,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 06:31:26,407 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:31:26,407 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-09 06:31:26,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-09 06:31:26,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-09 06:31:26,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-09 06:31:26,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-09 06:31:26,408 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-09 06:31:26,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-09 06:31:26,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-09 06:31:26,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-09 06:31:26,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-09 06:31:26,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-09 06:31:26,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-09 06:31:26,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-09 06:31:26,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-09 06:31:26,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-09 06:31:26,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-09 06:31:26,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-09 06:31:26,411 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-09 06:31:26,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-09 06:31:26,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-09 06:31:26,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-09 06:31:26,412 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-09 06:31:26,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 06:31:26,413 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-09 06:31:26,414 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 06:31:26,414 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 06:31:26,485 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 06:31:26,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 400 transitions, 840 flow [2024-11-09 06:31:26,590 INFO L124 PetriNetUnfolderBase]: 38/453 cut-off events. [2024-11-09 06:31:26,590 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 06:31:26,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 453 events. 38/453 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1560 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 386. Up to 12 conditions per place. [2024-11-09 06:31:26,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 400 transitions, 840 flow [2024-11-09 06:31:26,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 400 transitions, 840 flow [2024-11-09 06:31:26,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:31:26,611 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;@651b56c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:31:26,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-09 06:31:26,615 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 06:31:26,615 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-11-09 06:31:26,615 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 06:31:26,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 06:31:26,616 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] [2024-11-09 06:31:26,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-09 06:31:26,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:31:26,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1842639091, now seen corresponding path program 1 times [2024-11-09 06:31:26,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:31:26,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580433552] [2024-11-09 06:31:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:31:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:31:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:31:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:31:26,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:31:26,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580433552] [2024-11-09 06:31:26,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580433552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:31:26,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:31:26,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:31:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298791052] [2024-11-09 06:31:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:31:26,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:31:26,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:31:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:31:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:31:27,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 400 [2024-11-09 06:31:27,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 400 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 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) [2024-11-09 06:31:27,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 06:31:27,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 400 [2024-11-09 06:31:27,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand