/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 PROGRAM_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-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:39:46,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:39:46,943 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 [2023-08-26 10:39:46,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:39:46,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:39:46,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:39:46,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:39:46,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:39:46,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:39:46,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:39:46,981 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:39:46,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:39:46,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:39:46,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:39:46,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:39:46,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:39:46,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:39:46,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:39:46,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:39:46,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:39:46,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:39:46,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:39:46,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:39:46,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:39:46,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:39:46,986 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:39:46,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:39:46,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:39:46,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:39:46,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:39:46,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:39:46,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:39:46,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:39:46,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:39:46,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:39:46,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:39:47,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:39:47,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:39:47,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:39:47,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:39:47,350 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:39:47,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-26 10:39:48,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:39:48,755 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:39:48,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-26 10:39:48,761 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174a14652/b57872423beb4d1583128228e7f495cf/FLAGde36dd3d4 [2023-08-26 10:39:48,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174a14652/b57872423beb4d1583128228e7f495cf [2023-08-26 10:39:48,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:39:48,773 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:39:48,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:39:48,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:39:48,777 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:39:48,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:48,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1369a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48, skipping insertion in model container [2023-08-26 10:39:48,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:48,797 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:39:48,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:39:48,946 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:39:48,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:39:48,980 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:39:48,980 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:39:48,986 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:39:48,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48 WrapperNode [2023-08-26 10:39:48,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:39:48,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:39:48,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:39:48,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:39:48,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,024 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 233 [2023-08-26 10:39:49,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:39:49,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:39:49,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:39:49,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:39:49,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,051 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:39:49,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:39:49,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:39:49,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:39:49,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (1/1) ... [2023-08-26 10:39:49,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:39:49,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:39:49,090 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) [2023-08-26 10:39:49,119 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 [2023-08-26 10:39:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:39:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:39:49,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:39:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:39:49,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:39:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 10:39:49,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 10:39:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-26 10:39:49,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-26 10:39:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:39:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:39:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:39:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 10:39:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 10:39:49,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:39:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:39:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:39:49,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:39:49,140 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 10:39:49,275 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:39:49,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:39:49,650 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:39:49,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:39:49,785 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 10:39:49,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:39:49 BoogieIcfgContainer [2023-08-26 10:39:49,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:39:49,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:39:49,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:39:49,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:39:49,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:39:48" (1/3) ... [2023-08-26 10:39:49,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e31caef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:39:49, skipping insertion in model container [2023-08-26 10:39:49,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:39:48" (2/3) ... [2023-08-26 10:39:49,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e31caef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:39:49, skipping insertion in model container [2023-08-26 10:39:49,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:39:49" (3/3) ... [2023-08-26 10:39:49,795 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-26 10:39:49,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:39:49,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-08-26 10:39:49,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:39:49,888 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 10:39:49,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 246 transitions, 524 flow [2023-08-26 10:39:50,011 INFO L124 PetriNetUnfolderBase]: 12/242 cut-off events. [2023-08-26 10:39:50,011 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 10:39:50,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 242 events. 12/242 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 262 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-26 10:39:50,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 246 transitions, 524 flow [2023-08-26 10:39:50,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 229 transitions, 482 flow [2023-08-26 10:39:50,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:39:50,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 229 transitions, 482 flow [2023-08-26 10:39:50,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 229 transitions, 482 flow [2023-08-26 10:39:50,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 229 transitions, 482 flow [2023-08-26 10:39:50,110 INFO L124 PetriNetUnfolderBase]: 12/229 cut-off events. [2023-08-26 10:39:50,110 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 10:39:50,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 229 events. 12/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 259 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-26 10:39:50,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 7430 [2023-08-26 10:39:57,715 INFO L134 LiptonReduction]: Checked pairs total: 10345 [2023-08-26 10:39:57,715 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-26 10:39:57,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:39:57,747 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;@5e36ff44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:39:57,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-08-26 10:39:57,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:39:57,748 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:39:57,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:39:57,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:39:57,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:39:57,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:39:57,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:39:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1131, now seen corresponding path program 1 times [2023-08-26 10:39:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:39:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827518934] [2023-08-26 10:39:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:39:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:39:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:39:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:39:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:39:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827518934] [2023-08-26 10:39:57,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827518934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:39:57,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:39:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:39:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847175075] [2023-08-26 10:39:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:39:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:39:57,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:39:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:39:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:39:57,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 547 [2023-08-26 10:39:57,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 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) [2023-08-26 10:39:57,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:39:57,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 547 [2023-08-26 10:39:57,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:39:57,972 INFO L124 PetriNetUnfolderBase]: 249/340 cut-off events. [2023-08-26 10:39:57,973 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-26 10:39:57,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 340 events. 249/340 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 641 event pairs, 117 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 508. Up to 341 conditions per place. [2023-08-26 10:39:57,976 INFO L140 encePairwiseOnDemand]: 506/547 looper letters, 25 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-26 10:39:57,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 124 flow [2023-08-26 10:39:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:39:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:39:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 484 transitions. [2023-08-26 10:39:57,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4424131627056673 [2023-08-26 10:39:57,990 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 484 transitions. [2023-08-26 10:39:57,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 484 transitions. [2023-08-26 10:39:57,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:39:57,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 484 transitions. [2023-08-26 10:39:57,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 242.0) internal successors, (484), 2 states have internal predecessors, (484), 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) [2023-08-26 10:39:58,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 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) [2023-08-26 10:39:58,003 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 547.0) internal successors, (1641), 3 states have internal predecessors, (1641), 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) [2023-08-26 10:39:58,005 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 156 flow. Second operand 2 states and 484 transitions. [2023-08-26 10:39:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 124 flow [2023-08-26 10:39:58,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-26 10:39:58,009 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 58 flow [2023-08-26 10:39:58,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-26 10:39:58,013 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -48 predicate places. [2023-08-26 10:39:58,014 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 58 flow [2023-08-26 10:39:58,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 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) [2023-08-26 10:39:58,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:39:58,014 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] [2023-08-26 10:39:58,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:39:58,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:39:58,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:39:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1631969889, now seen corresponding path program 1 times [2023-08-26 10:39:58,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:39:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404258893] [2023-08-26 10:39:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:39:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:39:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:39:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:39:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:39:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404258893] [2023-08-26 10:39:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404258893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:39:58,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:39:58,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 10:39:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835627348] [2023-08-26 10:39:58,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:39:58,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:39:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:39:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:39:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:39:58,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 547 [2023-08-26 10:39:58,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2023-08-26 10:39:58,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:39:58,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 547 [2023-08-26 10:39:58,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:39:58,541 INFO L124 PetriNetUnfolderBase]: 431/611 cut-off events. [2023-08-26 10:39:58,542 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 10:39:58,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 611 events. 431/611 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1718 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1251. Up to 405 conditions per place. [2023-08-26 10:39:58,545 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 39 selfloop transitions, 3 changer transitions 3/45 dead transitions. [2023-08-26 10:39:58,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 45 transitions, 195 flow [2023-08-26 10:39:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:39:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:39:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 669 transitions. [2023-08-26 10:39:58,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076782449725777 [2023-08-26 10:39:58,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 669 transitions. [2023-08-26 10:39:58,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 669 transitions. [2023-08-26 10:39:58,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:39:58,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 669 transitions. [2023-08-26 10:39:58,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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) [2023-08-26 10:39:58,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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) [2023-08-26 10:39:58,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 547.0) internal successors, (2188), 4 states have internal predecessors, (2188), 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) [2023-08-26 10:39:58,558 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 58 flow. Second operand 3 states and 669 transitions. [2023-08-26 10:39:58,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 45 transitions, 195 flow [2023-08-26 10:39:58,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 45 transitions, 195 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:39:58,560 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 81 flow [2023-08-26 10:39:58,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-08-26 10:39:58,562 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -45 predicate places. [2023-08-26 10:39:58,564 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 81 flow [2023-08-26 10:39:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2023-08-26 10:39:58,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:39:58,566 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] [2023-08-26 10:39:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:39:58,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:39:58,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:39:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash 164483541, now seen corresponding path program 1 times [2023-08-26 10:39:58,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:39:58,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755688704] [2023-08-26 10:39:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:39:58,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:39:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:39:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:39:58,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:39:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755688704] [2023-08-26 10:39:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755688704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:39:58,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:39:58,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:39:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662731610] [2023-08-26 10:39:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:39:58,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:39:58,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:39:58,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:39:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:39:58,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:39:58,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:39:58,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:39:58,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:39:58,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:39:58,862 INFO L124 PetriNetUnfolderBase]: 395/575 cut-off events. [2023-08-26 10:39:58,862 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-08-26 10:39:58,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378 conditions, 575 events. 395/575 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1737 event pairs, 45 based on Foata normal form. 36/611 useless extension candidates. Maximal degree in co-relation 1373. Up to 369 conditions per place. [2023-08-26 10:39:58,865 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 33 selfloop transitions, 3 changer transitions 20/56 dead transitions. [2023-08-26 10:39:58,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 56 transitions, 261 flow [2023-08-26 10:39:58,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:39:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:39:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 842 transitions. [2023-08-26 10:39:58,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482632541133455 [2023-08-26 10:39:58,868 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 842 transitions. [2023-08-26 10:39:58,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 842 transitions. [2023-08-26 10:39:58,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:39:58,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 842 transitions. [2023-08-26 10:39:58,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.5) internal successors, (842), 4 states have internal predecessors, (842), 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) [2023-08-26 10:39:58,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:39:58,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:39:58,875 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 81 flow. Second operand 4 states and 842 transitions. [2023-08-26 10:39:58,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 56 transitions, 261 flow [2023-08-26 10:39:58,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:39:58,878 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 91 flow [2023-08-26 10:39:58,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-26 10:39:58,879 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -42 predicate places. [2023-08-26 10:39:58,880 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 91 flow [2023-08-26 10:39:58,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:39:58,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:39:58,881 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] [2023-08-26 10:39:58,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:39:58,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:39:58,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:39:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1307953268, now seen corresponding path program 1 times [2023-08-26 10:39:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:39:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639433823] [2023-08-26 10:39:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:39:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:39:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:39:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:39:59,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:39:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639433823] [2023-08-26 10:39:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639433823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:39:59,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:39:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:39:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498140976] [2023-08-26 10:39:59,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:39:59,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:39:59,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:39:59,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:39:59,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:39:59,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 547 [2023-08-26 10:39:59,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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) [2023-08-26 10:39:59,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:39:59,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 547 [2023-08-26 10:39:59,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:39:59,299 INFO L124 PetriNetUnfolderBase]: 475/662 cut-off events. [2023-08-26 10:39:59,299 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-08-26 10:39:59,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 662 events. 475/662 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1845 event pairs, 65 based on Foata normal form. 40/702 useless extension candidates. Maximal degree in co-relation 1770. Up to 373 conditions per place. [2023-08-26 10:39:59,304 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-08-26 10:39:59,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 62 transitions, 321 flow [2023-08-26 10:39:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:39:59,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:39:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 829 transitions. [2023-08-26 10:39:59,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3788848263254113 [2023-08-26 10:39:59,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 829 transitions. [2023-08-26 10:39:59,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 829 transitions. [2023-08-26 10:39:59,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:39:59,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 829 transitions. [2023-08-26 10:39:59,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 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) [2023-08-26 10:39:59,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:39:59,315 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:39:59,315 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 91 flow. Second operand 4 states and 829 transitions. [2023-08-26 10:39:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 62 transitions, 321 flow [2023-08-26 10:39:59,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 62 transitions, 309 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 10:39:59,319 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 129 flow [2023-08-26 10:39:59,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-26 10:39:59,321 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -40 predicate places. [2023-08-26 10:39:59,321 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 129 flow [2023-08-26 10:39:59,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 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) [2023-08-26 10:39:59,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:39:59,322 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] [2023-08-26 10:39:59,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 10:39:59,323 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:39:59,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:39:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1704050576, now seen corresponding path program 2 times [2023-08-26 10:39:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:39:59,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779613002] [2023-08-26 10:39:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:39:59,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:39:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:39:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:39:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:39:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779613002] [2023-08-26 10:39:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779613002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:39:59,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:39:59,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:39:59,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076251760] [2023-08-26 10:39:59,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:39:59,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:39:59,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:39:59,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:39:59,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:39:59,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:39:59,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:39:59,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:39:59,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:39:59,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:39:59,602 INFO L124 PetriNetUnfolderBase]: 801/1128 cut-off events. [2023-08-26 10:39:59,602 INFO L125 PetriNetUnfolderBase]: For 1447/1447 co-relation queries the response was YES. [2023-08-26 10:39:59,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1128 events. 801/1128 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3558 event pairs, 199 based on Foata normal form. 58/1186 useless extension candidates. Maximal degree in co-relation 3516. Up to 605 conditions per place. [2023-08-26 10:39:59,609 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 63 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-26 10:39:59,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 437 flow [2023-08-26 10:39:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:39:59,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:39:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 843 transitions. [2023-08-26 10:39:59,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852833638025594 [2023-08-26 10:39:59,612 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 843 transitions. [2023-08-26 10:39:59,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 843 transitions. [2023-08-26 10:39:59,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:39:59,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 843 transitions. [2023-08-26 10:39:59,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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) [2023-08-26 10:39:59,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:39:59,619 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:39:59,620 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 129 flow. Second operand 4 states and 843 transitions. [2023-08-26 10:39:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 437 flow [2023-08-26 10:39:59,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:39:59,625 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 204 flow [2023-08-26 10:39:59,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-26 10:39:59,627 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -36 predicate places. [2023-08-26 10:39:59,627 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 204 flow [2023-08-26 10:39:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:39:59,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:39:59,628 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] [2023-08-26 10:39:59,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 10:39:59,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:39:59,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:39:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 214245052, now seen corresponding path program 3 times [2023-08-26 10:39:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:39:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657942956] [2023-08-26 10:39:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:39:59,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:39:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:39:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:39:59,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:39:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657942956] [2023-08-26 10:39:59,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657942956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:39:59,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306532344] [2023-08-26 10:39:59,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:39:59,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:39:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:39:59,757 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) [2023-08-26 10:39:59,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 10:39:59,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:39:59,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:39:59,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:39:59,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:00,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306532344] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:00,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:40:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-08-26 10:40:00,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311980462] [2023-08-26 10:40:00,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:40:00,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:40:00,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:40:00,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:40:00,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:40:00,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:40:00,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:00,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:40:00,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:00,338 INFO L124 PetriNetUnfolderBase]: 1143/1618 cut-off events. [2023-08-26 10:40:00,338 INFO L125 PetriNetUnfolderBase]: For 2615/2615 co-relation queries the response was YES. [2023-08-26 10:40:00,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 1618 events. 1143/1618 cut-off events. For 2615/2615 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5798 event pairs, 253 based on Foata normal form. 36/1654 useless extension candidates. Maximal degree in co-relation 5705. Up to 822 conditions per place. [2023-08-26 10:40:00,351 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 67 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-08-26 10:40:00,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 521 flow [2023-08-26 10:40:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:40:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:40:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 847 transitions. [2023-08-26 10:40:00,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38711151736745886 [2023-08-26 10:40:00,354 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 847 transitions. [2023-08-26 10:40:00,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 847 transitions. [2023-08-26 10:40:00,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:00,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 847 transitions. [2023-08-26 10:40:00,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 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) [2023-08-26 10:40:00,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:00,360 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:00,360 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 204 flow. Second operand 4 states and 847 transitions. [2023-08-26 10:40:00,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 521 flow [2023-08-26 10:40:00,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 76 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:40:00,364 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 269 flow [2023-08-26 10:40:00,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=269, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-26 10:40:00,365 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -32 predicate places. [2023-08-26 10:40:00,365 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 269 flow [2023-08-26 10:40:00,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:40:00,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:00,366 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] [2023-08-26 10:40:00,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 10:40:00,572 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 [2023-08-26 10:40:00,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:00,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:00,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2120497561, now seen corresponding path program 2 times [2023-08-26 10:40:00,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:00,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99940688] [2023-08-26 10:40:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:00,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:00,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99940688] [2023-08-26 10:40:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99940688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:40:00,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:40:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:40:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101889017] [2023-08-26 10:40:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:40:00,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:40:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:40:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:40:00,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 547 [2023-08-26 10:40:00,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 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) [2023-08-26 10:40:00,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:00,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 547 [2023-08-26 10:40:00,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:01,006 INFO L124 PetriNetUnfolderBase]: 1225/1732 cut-off events. [2023-08-26 10:40:01,006 INFO L125 PetriNetUnfolderBase]: For 5242/5242 co-relation queries the response was YES. [2023-08-26 10:40:01,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 1732 events. 1225/1732 cut-off events. For 5242/5242 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6339 event pairs, 305 based on Foata normal form. 22/1754 useless extension candidates. Maximal degree in co-relation 6659. Up to 1593 conditions per place. [2023-08-26 10:40:01,019 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 51 selfloop transitions, 4 changer transitions 14/69 dead transitions. [2023-08-26 10:40:01,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 547 flow [2023-08-26 10:40:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:40:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:40:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 821 transitions. [2023-08-26 10:40:01,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37522851919561245 [2023-08-26 10:40:01,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 821 transitions. [2023-08-26 10:40:01,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 821 transitions. [2023-08-26 10:40:01,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:01,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 821 transitions. [2023-08-26 10:40:01,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 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) [2023-08-26 10:40:01,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:01,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:01,029 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 269 flow. Second operand 4 states and 821 transitions. [2023-08-26 10:40:01,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 547 flow [2023-08-26 10:40:01,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:40:01,035 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 307 flow [2023-08-26 10:40:01,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-26 10:40:01,036 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2023-08-26 10:40:01,036 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 307 flow [2023-08-26 10:40:01,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.5) internal successors, (790), 4 states have internal predecessors, (790), 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) [2023-08-26 10:40:01,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:01,036 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] [2023-08-26 10:40:01,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 10:40:01,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:01,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:01,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1440095181, now seen corresponding path program 3 times [2023-08-26 10:40:01,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:01,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058891115] [2023-08-26 10:40:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:01,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:01,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058891115] [2023-08-26 10:40:01,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058891115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:40:01,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:40:01,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:40:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366189387] [2023-08-26 10:40:01,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:40:01,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:40:01,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:40:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:40:01,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:40:01,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:40:01,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:01,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:40:01,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:01,313 INFO L124 PetriNetUnfolderBase]: 795/1086 cut-off events. [2023-08-26 10:40:01,314 INFO L125 PetriNetUnfolderBase]: For 4960/4960 co-relation queries the response was YES. [2023-08-26 10:40:01,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 1086 events. 795/1086 cut-off events. For 4960/4960 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3278 event pairs, 229 based on Foata normal form. 80/1166 useless extension candidates. Maximal degree in co-relation 4852. Up to 797 conditions per place. [2023-08-26 10:40:01,322 INFO L140 encePairwiseOnDemand]: 543/547 looper letters, 47 selfloop transitions, 7 changer transitions 3/57 dead transitions. [2023-08-26 10:40:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 456 flow [2023-08-26 10:40:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:40:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:40:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 830 transitions. [2023-08-26 10:40:01,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793418647166362 [2023-08-26 10:40:01,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 830 transitions. [2023-08-26 10:40:01,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 830 transitions. [2023-08-26 10:40:01,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:01,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 830 transitions. [2023-08-26 10:40:01,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 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) [2023-08-26 10:40:01,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:01,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:01,330 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 307 flow. Second operand 4 states and 830 transitions. [2023-08-26 10:40:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 456 flow [2023-08-26 10:40:01,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 450 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 10:40:01,341 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 277 flow [2023-08-26 10:40:01,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-08-26 10:40:01,342 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -26 predicate places. [2023-08-26 10:40:01,342 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 277 flow [2023-08-26 10:40:01,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.5) internal successors, (806), 4 states have internal predecessors, (806), 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) [2023-08-26 10:40:01,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:01,343 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] [2023-08-26 10:40:01,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 10:40:01,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:01,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1894704771, now seen corresponding path program 1 times [2023-08-26 10:40:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:01,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997741469] [2023-08-26 10:40:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:01,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:01,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997741469] [2023-08-26 10:40:01,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997741469] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:01,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858360137] [2023-08-26 10:40:01,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:01,448 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) [2023-08-26 10:40:01,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 10:40:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:01,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:40:01,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:01,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:01,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858360137] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:01,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:40:01,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-08-26 10:40:01,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992548840] [2023-08-26 10:40:01,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:40:01,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:40:01,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:40:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:40:01,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:40:01,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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) [2023-08-26 10:40:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:40:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:01,950 INFO L124 PetriNetUnfolderBase]: 1186/1631 cut-off events. [2023-08-26 10:40:01,950 INFO L125 PetriNetUnfolderBase]: For 6615/6615 co-relation queries the response was YES. [2023-08-26 10:40:01,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 1631 events. 1186/1631 cut-off events. For 6615/6615 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5549 event pairs, 140 based on Foata normal form. 60/1691 useless extension candidates. Maximal degree in co-relation 7181. Up to 933 conditions per place. [2023-08-26 10:40:01,964 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 69 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2023-08-26 10:40:01,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 634 flow [2023-08-26 10:40:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:40:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:40:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-26 10:40:01,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386654478976234 [2023-08-26 10:40:01,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-26 10:40:01,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-26 10:40:01,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:01,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-26 10:40:01,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 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) [2023-08-26 10:40:01,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:01,979 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:01,979 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 277 flow. Second operand 4 states and 846 transitions. [2023-08-26 10:40:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 634 flow [2023-08-26 10:40:01,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 577 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-26 10:40:01,993 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 309 flow [2023-08-26 10:40:01,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-08-26 10:40:01,994 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2023-08-26 10:40:01,994 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 309 flow [2023-08-26 10:40:01,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 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) [2023-08-26 10:40:01,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:01,995 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] [2023-08-26 10:40:02,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 10:40:02,201 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,SelfDestructingSolverStorable8 [2023-08-26 10:40:02,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:02,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:02,202 INFO L85 PathProgramCache]: Analyzing trace with hash 590938487, now seen corresponding path program 1 times [2023-08-26 10:40:02,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:02,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802141426] [2023-08-26 10:40:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:02,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:02,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802141426] [2023-08-26 10:40:02,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802141426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:02,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483298416] [2023-08-26 10:40:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:02,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:02,318 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) [2023-08-26 10:40:02,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 10:40:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:02,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 10:40:02,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:02,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483298416] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:02,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:40:02,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-08-26 10:40:02,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226005680] [2023-08-26 10:40:02,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:40:02,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:40:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:40:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:40:02,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:40:02,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 309 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-08-26 10:40:02,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:02,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:40:02,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:02,886 INFO L124 PetriNetUnfolderBase]: 2236/3091 cut-off events. [2023-08-26 10:40:02,886 INFO L125 PetriNetUnfolderBase]: For 11300/11300 co-relation queries the response was YES. [2023-08-26 10:40:02,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13091 conditions, 3091 events. 2236/3091 cut-off events. For 11300/11300 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12001 event pairs, 330 based on Foata normal form. 146/3237 useless extension candidates. Maximal degree in co-relation 13078. Up to 1467 conditions per place. [2023-08-26 10:40:02,938 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 82 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-26 10:40:02,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 93 transitions, 828 flow [2023-08-26 10:40:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:40:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:40:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-26 10:40:02,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386654478976234 [2023-08-26 10:40:02,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-26 10:40:02,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-26 10:40:02,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:02,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-26 10:40:02,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 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) [2023-08-26 10:40:02,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:02,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:02,951 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 309 flow. Second operand 4 states and 846 transitions. [2023-08-26 10:40:02,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 93 transitions, 828 flow [2023-08-26 10:40:02,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 93 transitions, 828 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:40:02,958 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 427 flow [2023-08-26 10:40:02,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-26 10:40:02,959 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-08-26 10:40:02,959 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 427 flow [2023-08-26 10:40:02,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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) [2023-08-26 10:40:02,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:02,959 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] [2023-08-26 10:40:02,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 10:40:03,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:03,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:03,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1262250185, now seen corresponding path program 1 times [2023-08-26 10:40:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:03,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455119933] [2023-08-26 10:40:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:03,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:03,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455119933] [2023-08-26 10:40:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455119933] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:03,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861113837] [2023-08-26 10:40:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:03,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:03,365 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) [2023-08-26 10:40:03,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 10:40:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:03,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-26 10:40:03,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:03,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:40:03,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861113837] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:40:03,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:40:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-26 10:40:03,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372668534] [2023-08-26 10:40:03,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:40:03,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:40:03,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:40:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:40:03,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 547 [2023-08-26 10:40:03,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 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) [2023-08-26 10:40:03,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:03,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 547 [2023-08-26 10:40:03,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:04,301 INFO L124 PetriNetUnfolderBase]: 4762/6785 cut-off events. [2023-08-26 10:40:04,301 INFO L125 PetriNetUnfolderBase]: For 33185/33185 co-relation queries the response was YES. [2023-08-26 10:40:04,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30561 conditions, 6785 events. 4762/6785 cut-off events. For 33185/33185 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 32817 event pairs, 1456 based on Foata normal form. 634/7419 useless extension candidates. Maximal degree in co-relation 30546. Up to 3473 conditions per place. [2023-08-26 10:40:04,344 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 90 selfloop transitions, 29 changer transitions 3/122 dead transitions. [2023-08-26 10:40:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 122 transitions, 1267 flow [2023-08-26 10:40:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:40:04,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:40:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 899 transitions. [2023-08-26 10:40:04,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108775137111517 [2023-08-26 10:40:04,347 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 899 transitions. [2023-08-26 10:40:04,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 899 transitions. [2023-08-26 10:40:04,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:04,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 899 transitions. [2023-08-26 10:40:04,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.75) internal successors, (899), 4 states have internal predecessors, (899), 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) [2023-08-26 10:40:04,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:04,352 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 547.0) internal successors, (2735), 5 states have internal predecessors, (2735), 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) [2023-08-26 10:40:04,352 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 427 flow. Second operand 4 states and 899 transitions. [2023-08-26 10:40:04,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 122 transitions, 1267 flow [2023-08-26 10:40:04,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 1267 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:40:04,362 INFO L231 Difference]: Finished difference. Result has 58 places, 74 transitions, 843 flow [2023-08-26 10:40:04,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=843, PETRI_PLACES=58, PETRI_TRANSITIONS=74} [2023-08-26 10:40:04,363 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-08-26 10:40:04,363 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 74 transitions, 843 flow [2023-08-26 10:40:04,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 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) [2023-08-26 10:40:04,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:04,364 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] [2023-08-26 10:40:04,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 10:40:04,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:04,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:04,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1257042805, now seen corresponding path program 2 times [2023-08-26 10:40:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644843323] [2023-08-26 10:40:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:04,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644843323] [2023-08-26 10:40:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644843323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:04,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243397700] [2023-08-26 10:40:04,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:40:04,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:04,748 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) [2023-08-26 10:40:04,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 10:40:04,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:40:04,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:40:04,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-26 10:40:04,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:05,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243397700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:40:05,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:40:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-26 10:40:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672432080] [2023-08-26 10:40:05,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:40:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:40:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:40:05,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:40:05,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 547 [2023-08-26 10:40:05,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 74 transitions, 843 flow. Second operand has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 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) [2023-08-26 10:40:05,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:05,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 547 [2023-08-26 10:40:05,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:06,499 INFO L124 PetriNetUnfolderBase]: 9386/13396 cut-off events. [2023-08-26 10:40:06,499 INFO L125 PetriNetUnfolderBase]: For 97976/97976 co-relation queries the response was YES. [2023-08-26 10:40:06,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69446 conditions, 13396 events. 9386/13396 cut-off events. For 97976/97976 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 73378 event pairs, 2230 based on Foata normal form. 691/14087 useless extension candidates. Maximal degree in co-relation 69428. Up to 5627 conditions per place. [2023-08-26 10:40:06,596 INFO L140 encePairwiseOnDemand]: 541/547 looper letters, 116 selfloop transitions, 72 changer transitions 3/191 dead transitions. [2023-08-26 10:40:06,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 191 transitions, 2307 flow [2023-08-26 10:40:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:40:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:40:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1129 transitions. [2023-08-26 10:40:06,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127970749542962 [2023-08-26 10:40:06,601 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1129 transitions. [2023-08-26 10:40:06,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1129 transitions. [2023-08-26 10:40:06,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:06,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1129 transitions. [2023-08-26 10:40:06,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 225.8) internal successors, (1129), 5 states have internal predecessors, (1129), 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) [2023-08-26 10:40:06,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 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) [2023-08-26 10:40:06,608 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 547.0) internal successors, (3282), 6 states have internal predecessors, (3282), 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) [2023-08-26 10:40:06,608 INFO L175 Difference]: Start difference. First operand has 58 places, 74 transitions, 843 flow. Second operand 5 states and 1129 transitions. [2023-08-26 10:40:06,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 191 transitions, 2307 flow [2023-08-26 10:40:06,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 191 transitions, 2271 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-26 10:40:06,630 INFO L231 Difference]: Finished difference. Result has 64 places, 117 transitions, 1600 flow [2023-08-26 10:40:06,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1600, PETRI_PLACES=64, PETRI_TRANSITIONS=117} [2023-08-26 10:40:06,631 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-08-26 10:40:06,631 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 117 transitions, 1600 flow [2023-08-26 10:40:06,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.0) internal successors, (1060), 5 states have internal predecessors, (1060), 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) [2023-08-26 10:40:06,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:06,632 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:40:06,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 10:40:06,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 10:40:06,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:06,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1209869744, now seen corresponding path program 3 times [2023-08-26 10:40:06,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:06,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373173004] [2023-08-26 10:40:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:06,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:06,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373173004] [2023-08-26 10:40:06,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373173004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:06,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123235268] [2023-08-26 10:40:06,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:40:06,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:06,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:06,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:40:06,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 10:40:07,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:40:07,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:40:07,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:40:07,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:07,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:07,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123235268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:40:07,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:40:07,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-08-26 10:40:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219845152] [2023-08-26 10:40:07,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:40:07,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 10:40:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 10:40:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-08-26 10:40:07,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 547 [2023-08-26 10:40:07,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 117 transitions, 1600 flow. Second operand has 15 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 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) [2023-08-26 10:40:07,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:07,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 547 [2023-08-26 10:40:07,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:12,177 INFO L124 PetriNetUnfolderBase]: 29067/41354 cut-off events. [2023-08-26 10:40:12,177 INFO L125 PetriNetUnfolderBase]: For 347137/347137 co-relation queries the response was YES. [2023-08-26 10:40:12,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246070 conditions, 41354 events. 29067/41354 cut-off events. For 347137/347137 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 264274 event pairs, 2372 based on Foata normal form. 7318/48672 useless extension candidates. Maximal degree in co-relation 246049. Up to 16685 conditions per place. [2023-08-26 10:40:12,535 INFO L140 encePairwiseOnDemand]: 540/547 looper letters, 819 selfloop transitions, 458 changer transitions 3/1280 dead transitions. [2023-08-26 10:40:12,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 1280 transitions, 18427 flow [2023-08-26 10:40:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 10:40:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 10:40:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7347 transitions. [2023-08-26 10:40:12,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3730956733698964 [2023-08-26 10:40:12,557 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7347 transitions. [2023-08-26 10:40:12,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7347 transitions. [2023-08-26 10:40:12,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:12,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7347 transitions. [2023-08-26 10:40:12,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 204.08333333333334) internal successors, (7347), 36 states have internal predecessors, (7347), 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) [2023-08-26 10:40:12,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 547.0) internal successors, (20239), 37 states have internal predecessors, (20239), 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) [2023-08-26 10:40:12,608 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 547.0) internal successors, (20239), 37 states have internal predecessors, (20239), 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) [2023-08-26 10:40:12,609 INFO L175 Difference]: Start difference. First operand has 64 places, 117 transitions, 1600 flow. Second operand 36 states and 7347 transitions. [2023-08-26 10:40:12,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 1280 transitions, 18427 flow [2023-08-26 10:40:13,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 1280 transitions, 17143 flow, removed 642 selfloop flow, removed 0 redundant places. [2023-08-26 10:40:13,113 INFO L231 Difference]: Finished difference. Result has 128 places, 563 transitions, 9618 flow [2023-08-26 10:40:13,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9618, PETRI_PLACES=128, PETRI_TRANSITIONS=563} [2023-08-26 10:40:13,114 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 53 predicate places. [2023-08-26 10:40:13,114 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 563 transitions, 9618 flow [2023-08-26 10:40:13,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 195.66666666666666) internal successors, (2935), 15 states have internal predecessors, (2935), 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) [2023-08-26 10:40:13,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:13,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:40:13,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 10:40:13,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:13,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:13,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:13,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1683187617, now seen corresponding path program 4 times [2023-08-26 10:40:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560435293] [2023-08-26 10:40:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560435293] [2023-08-26 10:40:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560435293] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063094129] [2023-08-26 10:40:13,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:40:13,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:13,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:13,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:40:13,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 10:40:13,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:40:13,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:40:13,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:40:13,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:13,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:40:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063094129] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:40:13,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:40:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-26 10:40:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723229272] [2023-08-26 10:40:13,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:40:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 10:40:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 10:40:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:40:13,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 547 [2023-08-26 10:40:13,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 563 transitions, 9618 flow. Second operand has 13 states, 13 states have (on average 200.84615384615384) internal successors, (2611), 13 states have internal predecessors, (2611), 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) [2023-08-26 10:40:13,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:13,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 547 [2023-08-26 10:40:13,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:24,125 INFO L124 PetriNetUnfolderBase]: 39004/55486 cut-off events. [2023-08-26 10:40:24,126 INFO L125 PetriNetUnfolderBase]: For 2200829/2200829 co-relation queries the response was YES. [2023-08-26 10:40:24,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518928 conditions, 55486 events. 39004/55486 cut-off events. For 2200829/2200829 co-relation queries the response was YES. Maximal size of possible extension queue 2212. Compared 366570 event pairs, 7828 based on Foata normal form. 1620/57106 useless extension candidates. Maximal degree in co-relation 518878. Up to 27345 conditions per place. [2023-08-26 10:40:25,044 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 856 selfloop transitions, 194 changer transitions 70/1120 dead transitions. [2023-08-26 10:40:25,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 1120 transitions, 21493 flow [2023-08-26 10:40:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 10:40:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 10:40:25,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3333 transitions. [2023-08-26 10:40:25,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.380827239488117 [2023-08-26 10:40:25,052 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3333 transitions. [2023-08-26 10:40:25,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3333 transitions. [2023-08-26 10:40:25,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:40:25,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3333 transitions. [2023-08-26 10:40:25,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 208.3125) internal successors, (3333), 16 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:40:25,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 547.0) internal successors, (9299), 17 states have internal predecessors, (9299), 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) [2023-08-26 10:40:25,070 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 547.0) internal successors, (9299), 17 states have internal predecessors, (9299), 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) [2023-08-26 10:40:25,070 INFO L175 Difference]: Start difference. First operand has 128 places, 563 transitions, 9618 flow. Second operand 16 states and 3333 transitions. [2023-08-26 10:40:25,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 1120 transitions, 21493 flow [2023-08-26 10:40:34,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 1120 transitions, 19371 flow, removed 967 selfloop flow, removed 5 redundant places. [2023-08-26 10:40:34,036 INFO L231 Difference]: Finished difference. Result has 144 places, 709 transitions, 12037 flow [2023-08-26 10:40:34,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=8081, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=12037, PETRI_PLACES=144, PETRI_TRANSITIONS=709} [2023-08-26 10:40:34,037 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 69 predicate places. [2023-08-26 10:40:34,037 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 709 transitions, 12037 flow [2023-08-26 10:40:34,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 200.84615384615384) internal successors, (2611), 13 states have internal predecessors, (2611), 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) [2023-08-26 10:40:34,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:40:34,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:40:34,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 10:40:34,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:34,245 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:40:34,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:40:34,246 INFO L85 PathProgramCache]: Analyzing trace with hash -159228145, now seen corresponding path program 5 times [2023-08-26 10:40:34,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:40:34,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544423066] [2023-08-26 10:40:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:40:34,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:40:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:40:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:40:34,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544423066] [2023-08-26 10:40:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544423066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:40:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652645708] [2023-08-26 10:40:34,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:40:34,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:40:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:40:34,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:40:34,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 10:40:34,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 10:40:34,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:40:34,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:40:34,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:40:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:34,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:40:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:40:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652645708] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:40:34,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:40:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-26 10:40:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429499429] [2023-08-26 10:40:34,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:40:34,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 10:40:34,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:40:34,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 10:40:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-08-26 10:40:34,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 547 [2023-08-26 10:40:34,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 709 transitions, 12037 flow. Second operand has 14 states, 14 states have (on average 195.85714285714286) internal successors, (2742), 14 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) [2023-08-26 10:40:34,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:40:34,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 547 [2023-08-26 10:40:34,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:40:59,270 INFO L124 PetriNetUnfolderBase]: 80158/114191 cut-off events. [2023-08-26 10:40:59,271 INFO L125 PetriNetUnfolderBase]: For 5202007/5202007 co-relation queries the response was YES. [2023-08-26 10:41:00,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101491 conditions, 114191 events. 80158/114191 cut-off events. For 5202007/5202007 co-relation queries the response was YES. Maximal size of possible extension queue 4732. Compared 838993 event pairs, 8871 based on Foata normal form. 3000/117191 useless extension candidates. Maximal degree in co-relation 1101434. Up to 35761 conditions per place. [2023-08-26 10:41:01,039 INFO L140 encePairwiseOnDemand]: 542/547 looper letters, 1605 selfloop transitions, 577 changer transitions 160/2342 dead transitions. [2023-08-26 10:41:01,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 2342 transitions, 50673 flow [2023-08-26 10:41:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 10:41:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 10:41:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3492 transitions. [2023-08-26 10:41:01,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755242499193462 [2023-08-26 10:41:01,046 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3492 transitions. [2023-08-26 10:41:01,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3492 transitions. [2023-08-26 10:41:01,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:01,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3492 transitions. [2023-08-26 10:41:01,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 205.41176470588235) internal successors, (3492), 17 states have internal predecessors, (3492), 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) [2023-08-26 10:41:01,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 547.0) internal successors, (9846), 18 states have internal predecessors, (9846), 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) [2023-08-26 10:41:01,064 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 547.0) internal successors, (9846), 18 states have internal predecessors, (9846), 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) [2023-08-26 10:41:01,065 INFO L175 Difference]: Start difference. First operand has 144 places, 709 transitions, 12037 flow. Second operand 17 states and 3492 transitions. [2023-08-26 10:41:01,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 2342 transitions, 50673 flow [2023-08-26 10:45:05,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 2342 transitions, 43595 flow, removed 3457 selfloop flow, removed 5 redundant places. [2023-08-26 10:45:05,737 INFO L231 Difference]: Finished difference. Result has 162 places, 1153 transitions, 21425 flow [2023-08-26 10:45:05,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=547, PETRI_DIFFERENCE_MINUEND_FLOW=10915, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21425, PETRI_PLACES=162, PETRI_TRANSITIONS=1153} [2023-08-26 10:45:05,738 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 87 predicate places. [2023-08-26 10:45:05,738 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 1153 transitions, 21425 flow [2023-08-26 10:45:05,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 195.85714285714286) internal successors, (2742), 14 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) [2023-08-26 10:45:05,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:45:05,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:45:05,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 10:45:05,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 10:45:05,947 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-26 10:45:05,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:45:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -602035450, now seen corresponding path program 6 times [2023-08-26 10:45:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:45:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133897544] [2023-08-26 10:45:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:45:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:45:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:45:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:45:06,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:45:06,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133897544] [2023-08-26 10:45:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133897544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:45:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418596852] [2023-08-26 10:45:06,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:45:06,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:45:06,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:45:06,071 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:45:06,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 10:45:06,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:45:06,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:45:06,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:45:06,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:45:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:45:06,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:45:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:45:06,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418596852] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:45:06,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:45:06,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-26 10:45:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551043017] [2023-08-26 10:45:06,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:45:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 10:45:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:45:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 10:45:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-26 10:45:06,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 547 [2023-08-26 10:45:06,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 1153 transitions, 21425 flow. Second operand has 14 states, 14 states have (on average 195.42857142857142) internal successors, (2736), 14 states have internal predecessors, (2736), 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) [2023-08-26 10:45:06,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:45:06,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 547 [2023-08-26 10:45:06,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:46:07,040 INFO L124 PetriNetUnfolderBase]: 155451/221904 cut-off events. [2023-08-26 10:46:07,040 INFO L125 PetriNetUnfolderBase]: For 9070112/9070112 co-relation queries the response was YES. [2023-08-26 10:46:09,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147086 conditions, 221904 events. 155451/221904 cut-off events. For 9070112/9070112 co-relation queries the response was YES. Maximal size of possible extension queue 9129. Compared 1744152 event pairs, 16688 based on Foata normal form. 20642/242546 useless extension candidates. Maximal degree in co-relation 2147022. Up to 71195 conditions per place. [2023-08-26 10:46:10,800 INFO L140 encePairwiseOnDemand]: 540/547 looper letters, 4636 selfloop transitions, 1301 changer transitions 162/6099 dead transitions. [2023-08-26 10:46:10,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 6099 transitions, 139177 flow [2023-08-26 10:46:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-26 10:46:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-26 10:46:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 11095 transitions. [2023-08-26 10:46:10,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687884327738076 [2023-08-26 10:46:10,810 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 11095 transitions. [2023-08-26 10:46:10,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 11095 transitions. [2023-08-26 10:46:10,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:46:10,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 11095 transitions. [2023-08-26 10:46:10,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 201.72727272727272) internal successors, (11095), 55 states have internal predecessors, (11095), 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) [2023-08-26 10:46:10,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 547.0) internal successors, (30632), 56 states have internal predecessors, (30632), 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) [2023-08-26 10:46:10,855 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 547.0) internal successors, (30632), 56 states have internal predecessors, (30632), 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) [2023-08-26 10:46:10,855 INFO L175 Difference]: Start difference. First operand has 162 places, 1153 transitions, 21425 flow. Second operand 55 states and 11095 transitions. [2023-08-26 10:46:10,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 6099 transitions, 139177 flow Received shutdown request... [2023-08-26 10:53:51,334 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 10:53:51,334 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 [2023-08-26 10:53:52,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-26 10:53:52,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown