/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:17:45,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:17:45,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 21:17:45,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:17:45,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:17:45,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:17:45,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:17:46,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:17:46,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:17:46,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:17:46,004 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:17:46,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:17:46,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:17:46,006 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:17:46,006 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:17:46,006 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:17:46,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:17:46,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:17:46,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:17:46,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:17:46,007 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:17:46,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:17:46,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:17:46,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:17:46,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:17:46,009 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:17:46,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:17:46,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:17:46,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:17:46,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:17:46,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:17:46,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:17:46,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:17:46,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:17:46,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:17:46,012 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:17:46,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:17:46,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:17:46,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:17:46,346 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:17:46,347 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:17:46,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-08-25 21:17:47,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:17:47,810 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:17:47,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-08-25 21:17:47,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420b5123e/c28b06158dbf4fa69bd5be3fe8adb63a/FLAG5fb96dbe1 [2023-08-25 21:17:47,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/420b5123e/c28b06158dbf4fa69bd5be3fe8adb63a [2023-08-25 21:17:47,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:17:47,832 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:17:47,833 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:17:47,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:17:47,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:17:47,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:17:47" (1/1) ... [2023-08-25 21:17:47,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da0bca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:47, skipping insertion in model container [2023-08-25 21:17:47,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:17:47" (1/1) ... [2023-08-25 21:17:47,855 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:17:48,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:17:48,060 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:17:48,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:17:48,116 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:17:48,116 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:17:48,122 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:17:48,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48 WrapperNode [2023-08-25 21:17:48,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:17:48,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:17:48,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:17:48,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:17:48,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,181 INFO L138 Inliner]: procedures = 22, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-08-25 21:17:48,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:17:48,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:17:48,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:17:48,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:17:48,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,210 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:17:48,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:17:48,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:17:48,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:17:48,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (1/1) ... [2023-08-25 21:17:48,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:17:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:48,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 21:17:48,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 21:17:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:17:48,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:17:48,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:17:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:17:48,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:17:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 21:17:48,305 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 21:17:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:17:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:17:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:17:48,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 21:17:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 21:17:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:17:48,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:17:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:17:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:17:48,307 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:17:48,399 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:17:48,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:17:48,845 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:17:49,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:17:49,010 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 21:17:49,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:17:49 BoogieIcfgContainer [2023-08-25 21:17:49,012 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:17:49,015 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:17:49,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:17:49,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:17:49,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:17:47" (1/3) ... [2023-08-25 21:17:49,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252da82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:17:49, skipping insertion in model container [2023-08-25 21:17:49,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:48" (2/3) ... [2023-08-25 21:17:49,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1252da82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:17:49, skipping insertion in model container [2023-08-25 21:17:49,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:17:49" (3/3) ... [2023-08-25 21:17:49,022 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-08-25 21:17:49,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:17:49,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-08-25 21:17:49,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:17:49,151 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 21:17:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 226 transitions, 476 flow [2023-08-25 21:17:49,289 INFO L124 PetriNetUnfolderBase]: 10/223 cut-off events. [2023-08-25 21:17:49,289 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 21:17:49,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 10/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-08-25 21:17:49,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 226 transitions, 476 flow [2023-08-25 21:17:49,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 212 transitions, 442 flow [2023-08-25 21:17:49,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:17:49,321 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 212 transitions, 442 flow [2023-08-25 21:17:49,323 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 212 transitions, 442 flow [2023-08-25 21:17:49,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 212 transitions, 442 flow [2023-08-25 21:17:49,388 INFO L124 PetriNetUnfolderBase]: 10/212 cut-off events. [2023-08-25 21:17:49,388 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 21:17:49,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 212 events. 10/212 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-08-25 21:17:49,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 4150 [2023-08-25 21:17:54,923 INFO L134 LiptonReduction]: Checked pairs total: 12136 [2023-08-25 21:17:54,923 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-25 21:17:54,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:17:54,942 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1d9965e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:17:54,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-08-25 21:17:54,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:17:54,944 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:17:54,944 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:17:54,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:54,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:17:54,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:17:54,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1107, now seen corresponding path program 1 times [2023-08-25 21:17:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494325712] [2023-08-25 21:17:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:54,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494325712] [2023-08-25 21:17:55,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494325712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:55,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:55,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:17:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346801638] [2023-08-25 21:17:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:55,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:17:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:17:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:17:55,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 457 [2023-08-25 21:17:55,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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) [2023-08-25 21:17:55,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:55,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 457 [2023-08-25 21:17:55,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:55,253 INFO L124 PetriNetUnfolderBase]: 563/816 cut-off events. [2023-08-25 21:17:55,253 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 21:17:55,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 816 events. 563/816 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2601 event pairs, 413 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 1384. Up to 817 conditions per place. [2023-08-25 21:17:55,260 INFO L140 encePairwiseOnDemand]: 412/457 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-25 21:17:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 122 flow [2023-08-25 21:17:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:17:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:17:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-25 21:17:55,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671772428884026 [2023-08-25 21:17:55,273 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-25 21:17:55,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-25 21:17:55,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:55,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-25 21:17:55,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 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) [2023-08-25 21:17:55,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 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) [2023-08-25 21:17:55,285 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 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) [2023-08-25 21:17:55,287 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 160 flow. Second operand 2 states and 427 transitions. [2023-08-25 21:17:55,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 122 flow [2023-08-25 21:17:55,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 21:17:55,291 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 58 flow [2023-08-25 21:17:55,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-08-25 21:17:55,296 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -50 predicate places. [2023-08-25 21:17:55,296 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 58 flow [2023-08-25 21:17:55,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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) [2023-08-25 21:17:55,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:55,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:55,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:17:55,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:17:55,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 33614235, now seen corresponding path program 1 times [2023-08-25 21:17:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164777317] [2023-08-25 21:17:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:55,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:55,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164777317] [2023-08-25 21:17:55,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164777317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:55,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:17:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826677838] [2023-08-25 21:17:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:55,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:17:55,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:17:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:17:55,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 457 [2023-08-25 21:17:55,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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) [2023-08-25 21:17:55,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:55,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 457 [2023-08-25 21:17:55,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:56,209 INFO L124 PetriNetUnfolderBase]: 931/1340 cut-off events. [2023-08-25 21:17:56,210 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-25 21:17:56,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 1340 events. 931/1340 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5040 event pairs, 71 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2709. Up to 809 conditions per place. [2023-08-25 21:17:56,218 INFO L140 encePairwiseOnDemand]: 451/457 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-25 21:17:56,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 68 transitions, 284 flow [2023-08-25 21:17:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:17:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:17:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 920 transitions. [2023-08-25 21:17:56,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026258205689278 [2023-08-25 21:17:56,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 920 transitions. [2023-08-25 21:17:56,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 920 transitions. [2023-08-25 21:17:56,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:56,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 920 transitions. [2023-08-25 21:17:56,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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) [2023-08-25 21:17:56,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 21:17:56,236 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 21:17:56,237 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 58 flow. Second operand 5 states and 920 transitions. [2023-08-25 21:17:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 68 transitions, 284 flow [2023-08-25 21:17:56,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 68 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:17:56,239 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 103 flow [2023-08-25 21:17:56,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-25 21:17:56,240 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -43 predicate places. [2023-08-25 21:17:56,241 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 103 flow [2023-08-25 21:17:56,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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) [2023-08-25 21:17:56,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:56,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:56,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:17:56,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:17:56,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1469115707, now seen corresponding path program 1 times [2023-08-25 21:17:56,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730876081] [2023-08-25 21:17:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:17:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730876081] [2023-08-25 21:17:56,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730876081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:56,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:56,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:17:56,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452122213] [2023-08-25 21:17:56,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:56,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:17:56,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:56,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:17:56,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:17:56,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 457 [2023-08-25 21:17:56,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 21:17:56,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:56,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 457 [2023-08-25 21:17:56,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:56,934 INFO L124 PetriNetUnfolderBase]: 1403/2008 cut-off events. [2023-08-25 21:17:56,934 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2023-08-25 21:17:56,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 2008 events. 1403/2008 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8491 event pairs, 173 based on Foata normal form. 0/1926 useless extension candidates. Maximal degree in co-relation 5172. Up to 1331 conditions per place. [2023-08-25 21:17:56,946 INFO L140 encePairwiseOnDemand]: 451/457 looper letters, 80 selfloop transitions, 8 changer transitions 0/88 dead transitions. [2023-08-25 21:17:56,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 88 transitions, 485 flow [2023-08-25 21:17:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:17:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:17:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 922 transitions. [2023-08-25 21:17:56,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035010940919037 [2023-08-25 21:17:56,950 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 922 transitions. [2023-08-25 21:17:56,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 922 transitions. [2023-08-25 21:17:56,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:56,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 922 transitions. [2023-08-25 21:17:56,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.4) internal successors, (922), 5 states have internal predecessors, (922), 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) [2023-08-25 21:17:56,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 21:17:56,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 21:17:56,980 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 103 flow. Second operand 5 states and 922 transitions. [2023-08-25 21:17:56,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 88 transitions, 485 flow [2023-08-25 21:17:56,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 88 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:17:56,987 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 172 flow [2023-08-25 21:17:56,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-25 21:17:56,988 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -37 predicate places. [2023-08-25 21:17:56,988 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 172 flow [2023-08-25 21:17:56,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 21:17:56,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:56,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:56,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:17:56,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:17:56,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1944025503, now seen corresponding path program 2 times [2023-08-25 21:17:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:56,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703634549] [2023-08-25 21:17:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703634549] [2023-08-25 21:17:57,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703634549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:57,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:57,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:17:57,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333117179] [2023-08-25 21:17:57,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:57,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:17:57,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:57,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:17:57,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:17:57,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 457 [2023-08-25 21:17:57,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 21:17:57,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:57,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 457 [2023-08-25 21:17:57,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:57,691 INFO L124 PetriNetUnfolderBase]: 2175/3080 cut-off events. [2023-08-25 21:17:57,691 INFO L125 PetriNetUnfolderBase]: For 3429/3429 co-relation queries the response was YES. [2023-08-25 21:17:57,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9548 conditions, 3080 events. 2175/3080 cut-off events. For 3429/3429 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13068 event pairs, 273 based on Foata normal form. 110/3190 useless extension candidates. Maximal degree in co-relation 9538. Up to 1395 conditions per place. [2023-08-25 21:17:57,709 INFO L140 encePairwiseOnDemand]: 452/457 looper letters, 78 selfloop transitions, 7 changer transitions 2/87 dead transitions. [2023-08-25 21:17:57,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 87 transitions, 561 flow [2023-08-25 21:17:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:17:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:17:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2023-08-25 21:17:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399562363238512 [2023-08-25 21:17:57,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2023-08-25 21:17:57,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2023-08-25 21:17:57,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:57,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2023-08-25 21:17:57,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 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) [2023-08-25 21:17:57,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 21:17:57,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 21:17:57,720 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 172 flow. Second operand 5 states and 913 transitions. [2023-08-25 21:17:57,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 87 transitions, 561 flow [2023-08-25 21:17:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:17:57,732 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 230 flow [2023-08-25 21:17:57,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-25 21:17:57,733 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -31 predicate places. [2023-08-25 21:17:57,734 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 230 flow [2023-08-25 21:17:57,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 21:17:57,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:57,734 INFO L208 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] [2023-08-25 21:17:57,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:17:57,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:17:57,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1449542271, now seen corresponding path program 1 times [2023-08-25 21:17:57,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:57,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174195133] [2023-08-25 21:17:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:57,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:17:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174195133] [2023-08-25 21:17:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174195133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:17:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968586635] [2023-08-25 21:17:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:58,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:17:58,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:17:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:17:58,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 457 [2023-08-25 21:17:58,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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) [2023-08-25 21:17:58,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:58,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 457 [2023-08-25 21:17:58,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:58,764 INFO L124 PetriNetUnfolderBase]: 2412/3413 cut-off events. [2023-08-25 21:17:58,764 INFO L125 PetriNetUnfolderBase]: For 5964/5964 co-relation queries the response was YES. [2023-08-25 21:17:58,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 3413 events. 2412/3413 cut-off events. For 5964/5964 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 15177 event pairs, 62 based on Foata normal form. 206/3619 useless extension candidates. Maximal degree in co-relation 11674. Up to 817 conditions per place. [2023-08-25 21:17:58,789 INFO L140 encePairwiseOnDemand]: 448/457 looper letters, 144 selfloop transitions, 21 changer transitions 0/165 dead transitions. [2023-08-25 21:17:58,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 165 transitions, 1239 flow [2023-08-25 21:17:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:17:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:17:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1653 transitions. [2023-08-25 21:17:58,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40189642596644787 [2023-08-25 21:17:58,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1653 transitions. [2023-08-25 21:17:58,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1653 transitions. [2023-08-25 21:17:58,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:58,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1653 transitions. [2023-08-25 21:17:58,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 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) [2023-08-25 21:17:58,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-25 21:17:58,809 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-25 21:17:58,810 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 230 flow. Second operand 9 states and 1653 transitions. [2023-08-25 21:17:58,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 165 transitions, 1239 flow [2023-08-25 21:17:58,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 165 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:17:58,824 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 384 flow [2023-08-25 21:17:58,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=384, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-25 21:17:58,826 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -19 predicate places. [2023-08-25 21:17:58,826 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 384 flow [2023-08-25 21:17:58,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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) [2023-08-25 21:17:58,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:58,827 INFO L208 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] [2023-08-25 21:17:58,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 21:17:58,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:17:58,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1447382229, now seen corresponding path program 2 times [2023-08-25 21:17:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527155316] [2023-08-25 21:17:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527155316] [2023-08-25 21:18:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527155316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057564766] [2023-08-25 21:18:01,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:18:01,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:01,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:01,441 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) [2023-08-25 21:18:01,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 21:18:01,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:18:01,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:01,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-25 21:18:01,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:02,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057564766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:04,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:04,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 23 [2023-08-25 21:18:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555928521] [2023-08-25 21:18:04,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:18:04,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:04,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:18:04,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:18:04,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 457 [2023-08-25 21:18:04,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 384 flow. Second operand has 25 states, 25 states have (on average 154.56) internal successors, (3864), 25 states have internal predecessors, (3864), 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) [2023-08-25 21:18:04,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:04,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 457 [2023-08-25 21:18:04,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:27,874 INFO L124 PetriNetUnfolderBase]: 10649/15262 cut-off events. [2023-08-25 21:18:27,875 INFO L125 PetriNetUnfolderBase]: For 48047/48047 co-relation queries the response was YES. [2023-08-25 21:18:27,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64449 conditions, 15262 events. 10649/15262 cut-off events. For 48047/48047 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 86761 event pairs, 159 based on Foata normal form. 32/15294 useless extension candidates. Maximal degree in co-relation 64431. Up to 4001 conditions per place. [2023-08-25 21:18:28,004 INFO L140 encePairwiseOnDemand]: 442/457 looper letters, 514 selfloop transitions, 379 changer transitions 224/1117 dead transitions. [2023-08-25 21:18:28,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 1117 transitions, 9245 flow [2023-08-25 21:18:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-08-25 21:18:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-08-25 21:18:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 15881 transitions. [2023-08-25 21:18:28,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510156267267865 [2023-08-25 21:18:28,045 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 15881 transitions. [2023-08-25 21:18:28,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 15881 transitions. [2023-08-25 21:18:28,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:28,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 15881 transitions. [2023-08-25 21:18:28,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 160.41414141414143) internal successors, (15881), 99 states have internal predecessors, (15881), 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) [2023-08-25 21:18:28,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 457.0) internal successors, (45700), 100 states have internal predecessors, (45700), 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) [2023-08-25 21:18:28,171 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 457.0) internal successors, (45700), 100 states have internal predecessors, (45700), 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) [2023-08-25 21:18:28,171 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 384 flow. Second operand 99 states and 15881 transitions. [2023-08-25 21:18:28,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 1117 transitions, 9245 flow [2023-08-25 21:18:28,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1117 transitions, 9167 flow, removed 39 selfloop flow, removed 0 redundant places. [2023-08-25 21:18:28,267 INFO L231 Difference]: Finished difference. Result has 221 places, 454 transitions, 4766 flow [2023-08-25 21:18:28,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=4766, PETRI_PLACES=221, PETRI_TRANSITIONS=454} [2023-08-25 21:18:28,269 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 143 predicate places. [2023-08-25 21:18:28,269 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 454 transitions, 4766 flow [2023-08-25 21:18:28,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 154.56) internal successors, (3864), 25 states have internal predecessors, (3864), 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) [2023-08-25 21:18:28,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:28,271 INFO L208 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] [2023-08-25 21:18:28,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 21:18:28,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 21:18:28,483 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:18:28,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash 377941625, now seen corresponding path program 3 times [2023-08-25 21:18:28,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:28,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322616183] [2023-08-25 21:18:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:30,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:30,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322616183] [2023-08-25 21:18:30,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322616183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:30,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735091832] [2023-08-25 21:18:30,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:18:30,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:30,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:30,071 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) [2023-08-25 21:18:30,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 21:18:30,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:18:30,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:30,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 21:18:30,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:31,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:33,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735091832] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:33,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:33,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 30 [2023-08-25 21:18:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887640513] [2023-08-25 21:18:33,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:33,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 21:18:33,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 21:18:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2023-08-25 21:18:33,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 457 [2023-08-25 21:18:33,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 454 transitions, 4766 flow. Second operand has 32 states, 32 states have (on average 157.25) internal successors, (5032), 32 states have internal predecessors, (5032), 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) [2023-08-25 21:18:33,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:33,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 457 [2023-08-25 21:18:33,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:19:03,154 INFO L124 PetriNetUnfolderBase]: 21652/31075 cut-off events. [2023-08-25 21:19:03,155 INFO L125 PetriNetUnfolderBase]: For 783564/783564 co-relation queries the response was YES. [2023-08-25 21:19:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217298 conditions, 31075 events. 21652/31075 cut-off events. For 783564/783564 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 196573 event pairs, 151 based on Foata normal form. 34/31109 useless extension candidates. Maximal degree in co-relation 217216. Up to 8149 conditions per place. [2023-08-25 21:19:03,865 INFO L140 encePairwiseOnDemand]: 441/457 looper letters, 746 selfloop transitions, 1288 changer transitions 252/2286 dead transitions. [2023-08-25 21:19:03,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 2286 transitions, 30335 flow [2023-08-25 21:19:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-08-25 21:19:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2023-08-25 21:19:03,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 19460 transitions. [2023-08-25 21:19:03,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357832410863689 [2023-08-25 21:19:03,899 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 19460 transitions. [2023-08-25 21:19:03,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 19460 transitions. [2023-08-25 21:19:03,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:19:03,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 19460 transitions. [2023-08-25 21:19:04,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 163.52941176470588) internal successors, (19460), 119 states have internal predecessors, (19460), 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) [2023-08-25 21:19:04,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 457.0) internal successors, (54840), 120 states have internal predecessors, (54840), 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) [2023-08-25 21:19:04,173 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 457.0) internal successors, (54840), 120 states have internal predecessors, (54840), 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) [2023-08-25 21:19:04,173 INFO L175 Difference]: Start difference. First operand has 221 places, 454 transitions, 4766 flow. Second operand 119 states and 19460 transitions. [2023-08-25 21:19:04,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 2286 transitions, 30335 flow [2023-08-25 21:19:10,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 2286 transitions, 28073 flow, removed 1131 selfloop flow, removed 14 redundant places. [2023-08-25 21:19:10,511 INFO L231 Difference]: Finished difference. Result has 378 places, 1487 transitions, 19558 flow [2023-08-25 21:19:10,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=119, PETRI_FLOW=19558, PETRI_PLACES=378, PETRI_TRANSITIONS=1487} [2023-08-25 21:19:10,513 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 300 predicate places. [2023-08-25 21:19:10,513 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 1487 transitions, 19558 flow [2023-08-25 21:19:10,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.25) internal successors, (5032), 32 states have internal predecessors, (5032), 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) [2023-08-25 21:19:10,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:19:10,514 INFO L208 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] [2023-08-25 21:19:10,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 21:19:10,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-25 21:19:10,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:19:10,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:19:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash -422577395, now seen corresponding path program 4 times [2023-08-25 21:19:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:19:10,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61272421] [2023-08-25 21:19:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:19:10,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:19:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:19:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:19:12,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:19:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61272421] [2023-08-25 21:19:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61272421] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:19:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355194698] [2023-08-25 21:19:12,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:19:12,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:19:12,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:19:12,805 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) [2023-08-25 21:19:12,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 21:19:13,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:19:13,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:19:13,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 21:19:13,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:19:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:19:13,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:19:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:19:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355194698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:19:15,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:19:15,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-25 21:19:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707606458] [2023-08-25 21:19:15,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:19:15,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:19:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:19:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:19:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:19:15,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 457 [2023-08-25 21:19:15,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 1487 transitions, 19558 flow. Second operand has 25 states, 25 states have (on average 157.76) internal successors, (3944), 25 states have internal predecessors, (3944), 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) [2023-08-25 21:19:15,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:19:15,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 457 [2023-08-25 21:19:15,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:20:32,417 INFO L124 PetriNetUnfolderBase]: 41342/59720 cut-off events. [2023-08-25 21:20:32,418 INFO L125 PetriNetUnfolderBase]: For 3904724/3904724 co-relation queries the response was YES. [2023-08-25 21:20:34,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551174 conditions, 59720 events. 41342/59720 cut-off events. For 3904724/3904724 co-relation queries the response was YES. Maximal size of possible extension queue 2823. Compared 412762 event pairs, 1074 based on Foata normal form. 33/59753 useless extension candidates. Maximal degree in co-relation 551034. Up to 12751 conditions per place. [2023-08-25 21:20:34,768 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 1690 selfloop transitions, 2490 changer transitions 758/4938 dead transitions. [2023-08-25 21:20:34,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 4938 transitions, 81210 flow [2023-08-25 21:20:34,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-08-25 21:20:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2023-08-25 21:20:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 24087 transitions. [2023-08-25 21:20:34,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35854954673335415 [2023-08-25 21:20:34,817 INFO L72 ComplementDD]: Start complementDD. Operand 147 states and 24087 transitions. [2023-08-25 21:20:34,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 147 states and 24087 transitions. [2023-08-25 21:20:34,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:20:34,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 147 states and 24087 transitions. [2023-08-25 21:20:34,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 148 states, 147 states have (on average 163.85714285714286) internal successors, (24087), 147 states have internal predecessors, (24087), 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) [2023-08-25 21:20:34,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 148 states, 148 states have (on average 457.0) internal successors, (67636), 148 states have internal predecessors, (67636), 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) [2023-08-25 21:20:34,959 INFO L81 ComplementDD]: Finished complementDD. Result has 148 states, 148 states have (on average 457.0) internal successors, (67636), 148 states have internal predecessors, (67636), 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) [2023-08-25 21:20:34,959 INFO L175 Difference]: Start difference. First operand has 378 places, 1487 transitions, 19558 flow. Second operand 147 states and 24087 transitions. [2023-08-25 21:20:34,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 4938 transitions, 81210 flow [2023-08-25 21:21:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 4938 transitions, 76678 flow, removed 2234 selfloop flow, removed 20 redundant places. [2023-08-25 21:21:42,991 INFO L231 Difference]: Finished difference. Result has 581 places, 3140 transitions, 50495 flow [2023-08-25 21:21:42,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=18007, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=947, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=147, PETRI_FLOW=50495, PETRI_PLACES=581, PETRI_TRANSITIONS=3140} [2023-08-25 21:21:42,994 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 503 predicate places. [2023-08-25 21:21:42,994 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 3140 transitions, 50495 flow [2023-08-25 21:21:42,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 157.76) internal successors, (3944), 25 states have internal predecessors, (3944), 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) [2023-08-25 21:21:42,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:21:42,995 INFO L208 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] [2023-08-25 21:21:43,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 21:21:43,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:21:43,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:21:43,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:21:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1426920799, now seen corresponding path program 1 times [2023-08-25 21:21:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:21:43,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851064969] [2023-08-25 21:21:43,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:21:43,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:21:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:21:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:21:43,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:21:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851064969] [2023-08-25 21:21:43,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851064969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:21:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542464854] [2023-08-25 21:21:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:21:43,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:21:43,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:21:43,777 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) [2023-08-25 21:21:43,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 21:21:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:21:43,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-25 21:21:43,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:21:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:21:44,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:21:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:21:44,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542464854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:21:44,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:21:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-25 21:21:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852747754] [2023-08-25 21:21:44,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:21:44,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 21:21:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:21:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 21:21:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-08-25 21:21:44,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 457 [2023-08-25 21:21:44,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 3140 transitions, 50495 flow. Second operand has 18 states, 18 states have (on average 166.33333333333334) internal successors, (2994), 18 states have internal predecessors, (2994), 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) [2023-08-25 21:21:44,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:21:44,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 457 [2023-08-25 21:21:44,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:22:42,236 INFO L124 PetriNetUnfolderBase]: 51455/74862 cut-off events. [2023-08-25 21:22:42,236 INFO L125 PetriNetUnfolderBase]: For 7960700/7960700 co-relation queries the response was YES. [2023-08-25 21:22:46,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825081 conditions, 74862 events. 51455/74862 cut-off events. For 7960700/7960700 co-relation queries the response was YES. Maximal size of possible extension queue 3402. Compared 539467 event pairs, 1601 based on Foata normal form. 548/75410 useless extension candidates. Maximal degree in co-relation 824859. Up to 25382 conditions per place. [2023-08-25 21:22:47,114 INFO L140 encePairwiseOnDemand]: 446/457 looper letters, 3511 selfloop transitions, 3291 changer transitions 0/6802 dead transitions. [2023-08-25 21:22:47,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 6802 transitions, 124582 flow [2023-08-25 21:22:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-25 21:22:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-25 21:22:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8783 transitions. [2023-08-25 21:22:47,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683957609301927 [2023-08-25 21:22:47,123 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8783 transitions. [2023-08-25 21:22:47,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8783 transitions. [2023-08-25 21:22:47,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:22:47,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8783 transitions. [2023-08-25 21:22:47,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 172.2156862745098) internal successors, (8783), 51 states have internal predecessors, (8783), 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) [2023-08-25 21:22:47,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 457.0) internal successors, (23764), 52 states have internal predecessors, (23764), 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) [2023-08-25 21:22:47,153 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 457.0) internal successors, (23764), 52 states have internal predecessors, (23764), 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) [2023-08-25 21:22:47,153 INFO L175 Difference]: Start difference. First operand has 581 places, 3140 transitions, 50495 flow. Second operand 51 states and 8783 transitions. [2023-08-25 21:22:47,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 6802 transitions, 124582 flow [2023-08-25 21:26:31,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 6802 transitions, 115000 flow, removed 4754 selfloop flow, removed 35 redundant places. [2023-08-25 21:26:31,436 INFO L231 Difference]: Finished difference. Result has 588 places, 5433 transitions, 93972 flow [2023-08-25 21:26:31,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=45291, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=93972, PETRI_PLACES=588, PETRI_TRANSITIONS=5433} [2023-08-25 21:26:31,439 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 510 predicate places. [2023-08-25 21:26:31,440 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 5433 transitions, 93972 flow [2023-08-25 21:26:31,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 166.33333333333334) internal successors, (2994), 18 states have internal predecessors, (2994), 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) [2023-08-25 21:26:31,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:26:31,440 INFO L208 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] [2023-08-25 21:26:31,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 21:26:31,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:26:31,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 21:26:31,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:26:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1878556247, now seen corresponding path program 1 times [2023-08-25 21:26:31,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:26:31,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282999866] [2023-08-25 21:26:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:26:31,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:26:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:26:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:26:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:26:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282999866] [2023-08-25 21:26:32,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282999866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:26:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966717020] [2023-08-25 21:26:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:26:32,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:26:32,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:26:32,045 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) [2023-08-25 21:26:32,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 21:26:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:26:32,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 21:26:32,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:26:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:26:32,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:26:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:26:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966717020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:26:32,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:26:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 14 [2023-08-25 21:26:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718802551] [2023-08-25 21:26:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:26:32,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 21:26:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:26:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 21:26:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-25 21:26:32,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 457 [2023-08-25 21:26:32,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 5433 transitions, 93972 flow. Second operand has 14 states, 14 states have (on average 172.42857142857142) internal successors, (2414), 14 states have internal predecessors, (2414), 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) [2023-08-25 21:26:32,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:26:32,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 457 [2023-08-25 21:26:32,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:29:05,324 INFO L124 PetriNetUnfolderBase]: 106296/154143 cut-off events. [2023-08-25 21:29:05,325 INFO L125 PetriNetUnfolderBase]: For 14838739/14838739 co-relation queries the response was YES. [2023-08-25 21:29:13,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775428 conditions, 154143 events. 106296/154143 cut-off events. For 14838739/14838739 co-relation queries the response was YES. Maximal size of possible extension queue 6278. Compared 1193378 event pairs, 4995 based on Foata normal form. 1068/155211 useless extension candidates. Maximal degree in co-relation 1775213. Up to 31327 conditions per place. [2023-08-25 21:29:15,118 INFO L140 encePairwiseOnDemand]: 450/457 looper letters, 4709 selfloop transitions, 6464 changer transitions 356/11529 dead transitions. [2023-08-25 21:29:15,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 11529 transitions, 230880 flow [2023-08-25 21:29:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 21:29:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 21:29:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3797 transitions. [2023-08-25 21:29:15,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956444722309055 [2023-08-25 21:29:15,122 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3797 transitions. [2023-08-25 21:29:15,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3797 transitions. [2023-08-25 21:29:15,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:29:15,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3797 transitions. [2023-08-25 21:29:15,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.8095238095238) internal successors, (3797), 21 states have internal predecessors, (3797), 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) [2023-08-25 21:29:15,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 457.0) internal successors, (10054), 22 states have internal predecessors, (10054), 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) [2023-08-25 21:29:15,133 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 457.0) internal successors, (10054), 22 states have internal predecessors, (10054), 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) [2023-08-25 21:29:15,133 INFO L175 Difference]: Start difference. First operand has 588 places, 5433 transitions, 93972 flow. Second operand 21 states and 3797 transitions. [2023-08-25 21:29:15,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 11529 transitions, 230880 flow Received shutdown request... [2023-08-25 21:30:58,166 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 21:30:58,166 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 21:30:59,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 21:30:59,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown