/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 20:23:03,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 20:23:03,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 20:23:03,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 20:23:03,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 20:23:03,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 20:23:03,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 20:23:03,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 20:23:03,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 20:23:03,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 20:23:03,290 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 20:23:03,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 20:23:03,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 20:23:03,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 20:23:03,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 20:23:03,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 20:23:03,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 20:23:03,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 20:23:03,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 20:23:03,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 20:23:03,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 20:23:03,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 20:23:03,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 20:23:03,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 20:23:03,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 20:23:03,295 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 20:23:03,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 20:23:03,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:23:03,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 20:23:03,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 20:23:03,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 20:23:03,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 20:23:03,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 20:23:03,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 20:23:03,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 20:23:03,297 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 20:23:03,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 20:23:03,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 20:23:03,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 20:23:03,597 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 20:23:03,597 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 20:23:03,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-25 20:23:04,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 20:23:04,910 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 20:23:04,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2023-08-25 20:23:04,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11e281f1/95eb147f96d6431e935e4c5c429f1f87/FLAG47886ec8a [2023-08-25 20:23:04,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f11e281f1/95eb147f96d6431e935e4c5c429f1f87 [2023-08-25 20:23:04,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 20:23:04,934 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 20:23:04,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 20:23:04,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 20:23:04,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 20:23:04,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:23:04" (1/1) ... [2023-08-25 20:23:04,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f394dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:04, skipping insertion in model container [2023-08-25 20:23:04,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:23:04" (1/1) ... [2023-08-25 20:23:04,959 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 20:23:05,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:23:05,120 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 20:23:05,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:23:05,161 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:23:05,161 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:23:05,167 INFO L206 MainTranslator]: Completed translation [2023-08-25 20:23:05,167 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05 WrapperNode [2023-08-25 20:23:05,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 20:23:05,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 20:23:05,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 20:23:05,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 20:23:05,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,238 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 207 [2023-08-25 20:23:05,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 20:23:05,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 20:23:05,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 20:23:05,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 20:23:05,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 20:23:05,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 20:23:05,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 20:23:05,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 20:23:05,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (1/1) ... [2023-08-25 20:23:05,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:23:05,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:23:05,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 20:23:05,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 20:23:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 20:23:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 20:23:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 20:23:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 20:23:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 20:23:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 20:23:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 20:23:05,391 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 20:23:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 20:23:05,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 20:23:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-25 20:23:05,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-25 20:23:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 20:23:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 20:23:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 20:23:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 20:23:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 20:23:05,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 20:23:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 20:23:05,396 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 20:23:05,528 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 20:23:05,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 20:23:06,130 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 20:23:06,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 20:23:06,405 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-25 20:23:06,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:23:06 BoogieIcfgContainer [2023-08-25 20:23:06,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 20:23:06,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 20:23:06,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 20:23:06,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 20:23:06,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:23:04" (1/3) ... [2023-08-25 20:23:06,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64134a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:23:06, skipping insertion in model container [2023-08-25 20:23:06,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:23:05" (2/3) ... [2023-08-25 20:23:06,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b64134a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:23:06, skipping insertion in model container [2023-08-25 20:23:06,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:23:06" (3/3) ... [2023-08-25 20:23:06,416 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2023-08-25 20:23:06,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 20:23:06,432 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2023-08-25 20:23:06,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 20:23:06,537 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 20:23:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 552 flow [2023-08-25 20:23:06,703 INFO L124 PetriNetUnfolderBase]: 12/256 cut-off events. [2023-08-25 20:23:06,703 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 20:23:06,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 256 events. 12/256 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 399 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 190. Up to 2 conditions per place. [2023-08-25 20:23:06,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 552 flow [2023-08-25 20:23:06,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 243 transitions, 510 flow [2023-08-25 20:23:06,729 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 20:23:06,735 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 243 transitions, 510 flow [2023-08-25 20:23:06,737 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 243 transitions, 510 flow [2023-08-25 20:23:06,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 243 transitions, 510 flow [2023-08-25 20:23:06,778 INFO L124 PetriNetUnfolderBase]: 12/243 cut-off events. [2023-08-25 20:23:06,778 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 20:23:06,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 243 events. 12/243 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 395 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 190. Up to 2 conditions per place. [2023-08-25 20:23:06,785 INFO L119 LiptonReduction]: Number of co-enabled transitions 9804 [2023-08-25 20:23:15,813 INFO L134 LiptonReduction]: Checked pairs total: 52018 [2023-08-25 20:23:15,814 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-08-25 20:23:15,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 20:23:15,831 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;@2926d81e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 20:23:15,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2023-08-25 20:23:15,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 20:23:15,832 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 20:23:15,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 20:23:15,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:15,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 20:23:15,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:15,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1291, now seen corresponding path program 1 times [2023-08-25 20:23:15,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225894827] [2023-08-25 20:23:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:15,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:23:15,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:15,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225894827] [2023-08-25 20:23:15,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225894827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:15,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:15,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 20:23:15,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792482399] [2023-08-25 20:23:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:15,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 20:23:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 20:23:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 20:23:15,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 454 [2023-08-25 20:23:15,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 226 flow. Second operand has 2 states, 2 states have (on average 202.5) internal successors, (405), 2 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:15,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:15,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 454 [2023-08-25 20:23:15,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:16,342 INFO L124 PetriNetUnfolderBase]: 1372/2904 cut-off events. [2023-08-25 20:23:16,342 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-08-25 20:23:16,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 2904 events. 1372/2904 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20440 event pairs, 926 based on Foata normal form. 425/2834 useless extension candidates. Maximal degree in co-relation 4264. Up to 1831 conditions per place. [2023-08-25 20:23:16,366 INFO L140 encePairwiseOnDemand]: 411/454 looper letters, 31 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-08-25 20:23:16,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 202 flow [2023-08-25 20:23:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 20:23:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 20:23:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 478 transitions. [2023-08-25 20:23:16,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526431718061674 [2023-08-25 20:23:16,379 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 478 transitions. [2023-08-25 20:23:16,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 478 transitions. [2023-08-25 20:23:16,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:16,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 478 transitions. [2023-08-25 20:23:16,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 239.0) internal successors, (478), 2 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:16,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:16,392 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:16,394 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 226 flow. Second operand 2 states and 478 transitions. [2023-08-25 20:23:16,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 202 flow [2023-08-25 20:23:16,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 186 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-25 20:23:16,402 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 124 flow [2023-08-25 20:23:16,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-25 20:23:16,406 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -47 predicate places. [2023-08-25 20:23:16,407 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 124 flow [2023-08-25 20:23:16,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 202.5) internal successors, (405), 2 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:16,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:16,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 20:23:16,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:16,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash 733416949, now seen corresponding path program 1 times [2023-08-25 20:23:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918371618] [2023-08-25 20:23:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:16,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:23:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918371618] [2023-08-25 20:23:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918371618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:16,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:23:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467755925] [2023-08-25 20:23:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:23:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:23:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:23:16,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 454 [2023-08-25 20:23:16,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:16,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:16,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 454 [2023-08-25 20:23:16,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:17,178 INFO L124 PetriNetUnfolderBase]: 3676/6272 cut-off events. [2023-08-25 20:23:17,179 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 20:23:17,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 6272 events. 3676/6272 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 37792 event pairs, 3028 based on Foata normal form. 0/5350 useless extension candidates. Maximal degree in co-relation 11465. Up to 4970 conditions per place. [2023-08-25 20:23:17,211 INFO L140 encePairwiseOnDemand]: 450/454 looper letters, 35 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-08-25 20:23:17,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 190 flow [2023-08-25 20:23:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:23:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:23:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-25 20:23:17,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43392070484581496 [2023-08-25 20:23:17,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-25 20:23:17,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-25 20:23:17,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:17,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-25 20:23:17,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,223 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 124 flow. Second operand 3 states and 591 transitions. [2023-08-25 20:23:17,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 190 flow [2023-08-25 20:23:17,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:23:17,226 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 120 flow [2023-08-25 20:23:17,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-08-25 20:23:17,230 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -48 predicate places. [2023-08-25 20:23:17,231 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 120 flow [2023-08-25 20:23:17,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:17,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:17,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 20:23:17,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:17,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash -834465713, now seen corresponding path program 1 times [2023-08-25 20:23:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475583573] [2023-08-25 20:23:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:23:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475583573] [2023-08-25 20:23:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475583573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:23:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853281191] [2023-08-25 20:23:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:23:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:23:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:23:17,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 454 [2023-08-25 20:23:17,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:17,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 454 [2023-08-25 20:23:17,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:17,737 INFO L124 PetriNetUnfolderBase]: 1372/2853 cut-off events. [2023-08-25 20:23:17,737 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-25 20:23:17,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 2853 events. 1372/2853 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 19704 event pairs, 926 based on Foata normal form. 0/2408 useless extension candidates. Maximal degree in co-relation 4771. Up to 1831 conditions per place. [2023-08-25 20:23:17,753 INFO L140 encePairwiseOnDemand]: 451/454 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-25 20:23:17,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 186 flow [2023-08-25 20:23:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:23:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:23:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-08-25 20:23:17,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42951541850220265 [2023-08-25 20:23:17,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-08-25 20:23:17,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-08-25 20:23:17,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:17,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-08-25 20:23:17,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 454.0) internal successors, (1816), 4 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,761 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 120 flow. Second operand 3 states and 585 transitions. [2023-08-25 20:23:17,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 186 flow [2023-08-25 20:23:17,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:17,763 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 131 flow [2023-08-25 20:23:17,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-25 20:23:17,764 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -46 predicate places. [2023-08-25 20:23:17,764 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 131 flow [2023-08-25 20:23:17,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:17,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:17,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:17,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 20:23:17,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:17,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:17,765 INFO L85 PathProgramCache]: Analyzing trace with hash 783760249, now seen corresponding path program 1 times [2023-08-25 20:23:17,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:17,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667506205] [2023-08-25 20:23:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:17,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667506205] [2023-08-25 20:23:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667506205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:18,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:23:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052542483] [2023-08-25 20:23:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:18,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:23:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:18,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:23:18,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:23:18,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 454 [2023-08-25 20:23:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 454 [2023-08-25 20:23:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:19,438 INFO L124 PetriNetUnfolderBase]: 6116/8523 cut-off events. [2023-08-25 20:23:19,438 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-25 20:23:19,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16621 conditions, 8523 events. 6116/8523 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 43232 event pairs, 2100 based on Foata normal form. 0/7842 useless extension candidates. Maximal degree in co-relation 16616. Up to 4702 conditions per place. [2023-08-25 20:23:19,480 INFO L140 encePairwiseOnDemand]: 447/454 looper letters, 113 selfloop transitions, 9 changer transitions 0/128 dead transitions. [2023-08-25 20:23:19,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 128 transitions, 523 flow [2023-08-25 20:23:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:23:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:23:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1118 transitions. [2023-08-25 20:23:19,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104258443465492 [2023-08-25 20:23:19,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1118 transitions. [2023-08-25 20:23:19,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1118 transitions. [2023-08-25 20:23:19,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:19,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1118 transitions. [2023-08-25 20:23:19,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.33333333333334) internal successors, (1118), 6 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:19,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 454.0) internal successors, (3178), 7 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:19,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 454.0) internal successors, (3178), 7 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:19,492 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 131 flow. Second operand 6 states and 1118 transitions. [2023-08-25 20:23:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 128 transitions, 523 flow [2023-08-25 20:23:19,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 128 transitions, 519 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:19,495 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 191 flow [2023-08-25 20:23:19,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-25 20:23:19,496 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -37 predicate places. [2023-08-25 20:23:19,496 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 191 flow [2023-08-25 20:23:19,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:19,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:19,497 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] [2023-08-25 20:23:19,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 20:23:19,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:19,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash 862558712, now seen corresponding path program 1 times [2023-08-25 20:23:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309660506] [2023-08-25 20:23:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:19,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:19,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:19,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309660506] [2023-08-25 20:23:19,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309660506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:19,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:19,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:23:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211436931] [2023-08-25 20:23:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:23:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:19,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:23:19,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:23:19,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 454 [2023-08-25 20:23:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 191 flow. Second operand has 9 states, 9 states have (on average 161.88888888888889) internal successors, (1457), 9 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 454 [2023-08-25 20:23:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:21,064 INFO L124 PetriNetUnfolderBase]: 5836/7923 cut-off events. [2023-08-25 20:23:21,064 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2023-08-25 20:23:21,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18763 conditions, 7923 events. 5836/7923 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38551 event pairs, 978 based on Foata normal form. 80/7450 useless extension candidates. Maximal degree in co-relation 18754. Up to 3296 conditions per place. [2023-08-25 20:23:21,103 INFO L140 encePairwiseOnDemand]: 448/454 looper letters, 97 selfloop transitions, 8 changer transitions 0/111 dead transitions. [2023-08-25 20:23:21,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 111 transitions, 501 flow [2023-08-25 20:23:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:23:21,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:23:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1217 transitions. [2023-08-25 20:23:21,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38294524858401513 [2023-08-25 20:23:21,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1217 transitions. [2023-08-25 20:23:21,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1217 transitions. [2023-08-25 20:23:21,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:21,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1217 transitions. [2023-08-25 20:23:21,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 173.85714285714286) internal successors, (1217), 7 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,116 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,116 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 191 flow. Second operand 7 states and 1217 transitions. [2023-08-25 20:23:21,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 111 transitions, 501 flow [2023-08-25 20:23:21,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 111 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:21,154 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 200 flow [2023-08-25 20:23:21,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-08-25 20:23:21,155 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -33 predicate places. [2023-08-25 20:23:21,155 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 200 flow [2023-08-25 20:23:21,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 161.88888888888889) internal successors, (1457), 9 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:21,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:21,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 20:23:21,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:21,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash 804610938, now seen corresponding path program 1 times [2023-08-25 20:23:21,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:21,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975095214] [2023-08-25 20:23:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:21,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:21,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975095214] [2023-08-25 20:23:21,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975095214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:21,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:21,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:23:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836020483] [2023-08-25 20:23:21,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:21,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:23:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:21,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:23:21,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:23:21,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 454 [2023-08-25 20:23:21,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:21,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 454 [2023-08-25 20:23:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:21,904 INFO L124 PetriNetUnfolderBase]: 3922/6659 cut-off events. [2023-08-25 20:23:21,904 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2023-08-25 20:23:21,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 6659 events. 3922/6659 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 44010 event pairs, 1698 based on Foata normal form. 0/6145 useless extension candidates. Maximal degree in co-relation 15183. Up to 3579 conditions per place. [2023-08-25 20:23:21,938 INFO L140 encePairwiseOnDemand]: 450/454 looper letters, 53 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-25 20:23:21,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 372 flow [2023-08-25 20:23:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:23:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:23:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 800 transitions. [2023-08-25 20:23:21,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44052863436123346 [2023-08-25 20:23:21,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 800 transitions. [2023-08-25 20:23:21,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 800 transitions. [2023-08-25 20:23:21,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:21,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 800 transitions. [2023-08-25 20:23:21,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 454.0) internal successors, (2270), 5 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 454.0) internal successors, (2270), 5 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,946 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 200 flow. Second operand 4 states and 800 transitions. [2023-08-25 20:23:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 372 flow [2023-08-25 20:23:21,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 358 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:23:21,965 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 200 flow [2023-08-25 20:23:21,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2023-08-25 20:23:21,966 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -34 predicate places. [2023-08-25 20:23:21,966 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 200 flow [2023-08-25 20:23:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:21,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:21,967 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, 1, 1, 1, 1] [2023-08-25 20:23:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 20:23:21,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:21,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash -904693879, now seen corresponding path program 1 times [2023-08-25 20:23:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:21,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939197072] [2023-08-25 20:23:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:22,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939197072] [2023-08-25 20:23:22,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939197072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:22,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:23:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392510911] [2023-08-25 20:23:22,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:22,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:23:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:23:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:23:22,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 454 [2023-08-25 20:23:22,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:22,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:22,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 454 [2023-08-25 20:23:22,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:23,518 INFO L124 PetriNetUnfolderBase]: 7982/11085 cut-off events. [2023-08-25 20:23:23,518 INFO L125 PetriNetUnfolderBase]: For 3622/3622 co-relation queries the response was YES. [2023-08-25 20:23:23,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27195 conditions, 11085 events. 7982/11085 cut-off events. For 3622/3622 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 58423 event pairs, 4809 based on Foata normal form. 0/10756 useless extension candidates. Maximal degree in co-relation 27185. Up to 9630 conditions per place. [2023-08-25 20:23:23,574 INFO L140 encePairwiseOnDemand]: 447/454 looper letters, 93 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2023-08-25 20:23:23,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 531 flow [2023-08-25 20:23:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:23:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:23:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1089 transitions. [2023-08-25 20:23:23,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997797356828194 [2023-08-25 20:23:23,578 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1089 transitions. [2023-08-25 20:23:23,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1089 transitions. [2023-08-25 20:23:23,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:23,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1089 transitions. [2023-08-25 20:23:23,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.5) internal successors, (1089), 6 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:23,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 454.0) internal successors, (3178), 7 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:23,585 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 454.0) internal successors, (3178), 7 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:23,585 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 200 flow. Second operand 6 states and 1089 transitions. [2023-08-25 20:23:23,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 531 flow [2023-08-25 20:23:23,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 112 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:23:23,609 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 306 flow [2023-08-25 20:23:23,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-25 20:23:23,609 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -26 predicate places. [2023-08-25 20:23:23,610 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 306 flow [2023-08-25 20:23:23,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:23,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:23,610 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:23,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 20:23:23,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:23,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1072020806, now seen corresponding path program 1 times [2023-08-25 20:23:23,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:23,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912041472] [2023-08-25 20:23:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:23,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:24,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912041472] [2023-08-25 20:23:24,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912041472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:24,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:23:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850122199] [2023-08-25 20:23:24,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:23:24,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:24,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:23:24,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:23:24,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 454 [2023-08-25 20:23:24,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 306 flow. Second operand has 9 states, 9 states have (on average 163.22222222222223) internal successors, (1469), 9 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:24,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:24,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 454 [2023-08-25 20:23:24,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:25,300 INFO L124 PetriNetUnfolderBase]: 7942/11029 cut-off events. [2023-08-25 20:23:25,300 INFO L125 PetriNetUnfolderBase]: For 5587/5587 co-relation queries the response was YES. [2023-08-25 20:23:25,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28504 conditions, 11029 events. 7942/11029 cut-off events. For 5587/5587 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 58176 event pairs, 4671 based on Foata normal form. 16/10738 useless extension candidates. Maximal degree in co-relation 28490. Up to 9069 conditions per place. [2023-08-25 20:23:25,346 INFO L140 encePairwiseOnDemand]: 448/454 looper letters, 89 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2023-08-25 20:23:25,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 568 flow [2023-08-25 20:23:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:23:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:23:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1196 transitions. [2023-08-25 20:23:25,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763373190685966 [2023-08-25 20:23:25,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1196 transitions. [2023-08-25 20:23:25,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1196 transitions. [2023-08-25 20:23:25,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:25,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1196 transitions. [2023-08-25 20:23:25,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.85714285714286) internal successors, (1196), 7 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:25,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:25,358 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:25,358 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 306 flow. Second operand 7 states and 1196 transitions. [2023-08-25 20:23:25,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 568 flow [2023-08-25 20:23:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 103 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:25,393 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 314 flow [2023-08-25 20:23:25,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2023-08-25 20:23:25,394 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -22 predicate places. [2023-08-25 20:23:25,394 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 314 flow [2023-08-25 20:23:25,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 163.22222222222223) internal successors, (1469), 9 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:25,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:25,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:25,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 20:23:25,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:25,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:25,395 INFO L85 PathProgramCache]: Analyzing trace with hash 713966286, now seen corresponding path program 1 times [2023-08-25 20:23:25,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:25,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952397869] [2023-08-25 20:23:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:25,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:23:25,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:25,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952397869] [2023-08-25 20:23:25,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952397869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:25,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:23:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707330737] [2023-08-25 20:23:25,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:25,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:23:25,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:23:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:23:25,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 454 [2023-08-25 20:23:25,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:25,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:25,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 454 [2023-08-25 20:23:25,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:26,501 INFO L124 PetriNetUnfolderBase]: 5222/9253 cut-off events. [2023-08-25 20:23:26,501 INFO L125 PetriNetUnfolderBase]: For 7699/7699 co-relation queries the response was YES. [2023-08-25 20:23:26,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22839 conditions, 9253 events. 5222/9253 cut-off events. For 7699/7699 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 67456 event pairs, 2453 based on Foata normal form. 320/9300 useless extension candidates. Maximal degree in co-relation 22825. Up to 5225 conditions per place. [2023-08-25 20:23:26,556 INFO L140 encePairwiseOnDemand]: 450/454 looper letters, 71 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2023-08-25 20:23:26,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 602 flow [2023-08-25 20:23:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:23:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:23:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 800 transitions. [2023-08-25 20:23:26,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44052863436123346 [2023-08-25 20:23:26,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 800 transitions. [2023-08-25 20:23:26,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 800 transitions. [2023-08-25 20:23:26,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:26,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 800 transitions. [2023-08-25 20:23:26,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:26,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 454.0) internal successors, (2270), 5 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:26,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 454.0) internal successors, (2270), 5 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:26,565 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 314 flow. Second operand 4 states and 800 transitions. [2023-08-25 20:23:26,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 602 flow [2023-08-25 20:23:26,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 588 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:23:26,597 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 314 flow [2023-08-25 20:23:26,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2023-08-25 20:23:26,598 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -23 predicate places. [2023-08-25 20:23:26,598 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 314 flow [2023-08-25 20:23:26,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:26,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:26,599 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:26,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 20:23:26,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:26,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1517770567, now seen corresponding path program 1 times [2023-08-25 20:23:26,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:26,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966121579] [2023-08-25 20:23:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:23:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966121579] [2023-08-25 20:23:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966121579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:23:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506813787] [2023-08-25 20:23:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:23:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:23:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:23:26,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 454 [2023-08-25 20:23:26,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:26,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:26,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 454 [2023-08-25 20:23:26,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:28,296 INFO L124 PetriNetUnfolderBase]: 9887/13756 cut-off events. [2023-08-25 20:23:28,296 INFO L125 PetriNetUnfolderBase]: For 10272/10272 co-relation queries the response was YES. [2023-08-25 20:23:28,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38338 conditions, 13756 events. 9887/13756 cut-off events. For 10272/10272 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 75963 event pairs, 6533 based on Foata normal form. 0/13368 useless extension candidates. Maximal degree in co-relation 38323. Up to 12758 conditions per place. [2023-08-25 20:23:28,354 INFO L140 encePairwiseOnDemand]: 447/454 looper letters, 81 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2023-08-25 20:23:28,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 628 flow [2023-08-25 20:23:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:23:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:23:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1064 transitions. [2023-08-25 20:23:28,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39060205580029367 [2023-08-25 20:23:28,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1064 transitions. [2023-08-25 20:23:28,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1064 transitions. [2023-08-25 20:23:28,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:28,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1064 transitions. [2023-08-25 20:23:28,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:28,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 454.0) internal successors, (3178), 7 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:28,365 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 454.0) internal successors, (3178), 7 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:28,365 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 314 flow. Second operand 6 states and 1064 transitions. [2023-08-25 20:23:28,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 628 flow [2023-08-25 20:23:28,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 104 transitions, 624 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:23:28,407 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 486 flow [2023-08-25 20:23:28,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2023-08-25 20:23:28,408 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -15 predicate places. [2023-08-25 20:23:28,408 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 486 flow [2023-08-25 20:23:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.5) internal successors, (1035), 6 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:28,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:28,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 20:23:28,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:28,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1761369500, now seen corresponding path program 1 times [2023-08-25 20:23:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602876646] [2023-08-25 20:23:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:23:29,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:29,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602876646] [2023-08-25 20:23:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602876646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:29,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 20:23:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570031125] [2023-08-25 20:23:29,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:29,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:23:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:23:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:23:29,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 454 [2023-08-25 20:23:29,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 486 flow. Second operand has 9 states, 9 states have (on average 164.44444444444446) internal successors, (1480), 9 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:29,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:29,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 454 [2023-08-25 20:23:29,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:30,648 INFO L124 PetriNetUnfolderBase]: 9881/13738 cut-off events. [2023-08-25 20:23:30,648 INFO L125 PetriNetUnfolderBase]: For 12054/12054 co-relation queries the response was YES. [2023-08-25 20:23:30,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38865 conditions, 13738 events. 9881/13738 cut-off events. For 12054/12054 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 75822 event pairs, 6517 based on Foata normal form. 4/13360 useless extension candidates. Maximal degree in co-relation 38846. Up to 12657 conditions per place. [2023-08-25 20:23:30,751 INFO L140 encePairwiseOnDemand]: 448/454 looper letters, 89 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2023-08-25 20:23:30,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 103 transitions, 724 flow [2023-08-25 20:23:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:23:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:23:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1179 transitions. [2023-08-25 20:23:30,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709880427942102 [2023-08-25 20:23:30,755 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1179 transitions. [2023-08-25 20:23:30,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1179 transitions. [2023-08-25 20:23:30,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:30,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1179 transitions. [2023-08-25 20:23:30,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.42857142857142) internal successors, (1179), 7 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:30,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:30,763 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:30,763 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 486 flow. Second operand 7 states and 1179 transitions. [2023-08-25 20:23:30,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 103 transitions, 724 flow [2023-08-25 20:23:30,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 103 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:23:30,841 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 493 flow [2023-08-25 20:23:30,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=493, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2023-08-25 20:23:30,841 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -11 predicate places. [2023-08-25 20:23:30,842 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 493 flow [2023-08-25 20:23:30,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 164.44444444444446) internal successors, (1480), 9 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:30,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:30,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:30,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 20:23:30,850 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:30,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1047914486, now seen corresponding path program 1 times [2023-08-25 20:23:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:30,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8781962] [2023-08-25 20:23:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8781962] [2023-08-25 20:23:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8781962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:23:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:23:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:23:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575824256] [2023-08-25 20:23:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:23:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:23:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:23:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:23:30,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 454 [2023-08-25 20:23:30,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:30,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:30,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 454 [2023-08-25 20:23:30,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:32,001 INFO L124 PetriNetUnfolderBase]: 5740/10334 cut-off events. [2023-08-25 20:23:32,001 INFO L125 PetriNetUnfolderBase]: For 12934/13144 co-relation queries the response was YES. [2023-08-25 20:23:32,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27872 conditions, 10334 events. 5740/10334 cut-off events. For 12934/13144 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 76193 event pairs, 3135 based on Foata normal form. 444/10596 useless extension candidates. Maximal degree in co-relation 27853. Up to 6345 conditions per place. [2023-08-25 20:23:32,048 INFO L140 encePairwiseOnDemand]: 450/454 looper letters, 76 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2023-08-25 20:23:32,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 849 flow [2023-08-25 20:23:32,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:23:32,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:23:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 803 transitions. [2023-08-25 20:23:32,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44218061674008813 [2023-08-25 20:23:32,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 803 transitions. [2023-08-25 20:23:32,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 803 transitions. [2023-08-25 20:23:32,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:32,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 803 transitions. [2023-08-25 20:23:32,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:32,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 454.0) internal successors, (2270), 5 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:32,056 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 454.0) internal successors, (2270), 5 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:32,056 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 493 flow. Second operand 4 states and 803 transitions. [2023-08-25 20:23:32,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 849 flow [2023-08-25 20:23:32,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 835 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:23:32,132 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 668 flow [2023-08-25 20:23:32,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=668, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-25 20:23:32,133 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, -12 predicate places. [2023-08-25 20:23:32,133 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 668 flow [2023-08-25 20:23:32,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.75) internal successors, (783), 4 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:32,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:32,134 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:32,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 20:23:32,134 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:32,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash -540294471, now seen corresponding path program 1 times [2023-08-25 20:23:32,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:32,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648549772] [2023-08-25 20:23:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:32,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648549772] [2023-08-25 20:23:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648549772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:23:32,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539049523] [2023-08-25 20:23:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:32,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:23:32,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:23:32,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:23:32,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 20:23:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:33,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 20:23:33,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:23:33,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:23:33,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-25 20:23:33,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 20:23:33,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 70 [2023-08-25 20:23:33,434 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:23:33,435 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:23:33,441 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-08-25 20:23:33,586 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:23:33,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 85 [2023-08-25 20:23:33,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 58 [2023-08-25 20:23:33,645 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:23:33,645 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:23:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:33,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:23:33,805 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-25 20:23:33,975 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:23:33,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 83 [2023-08-25 20:23:33,985 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:23:33,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 55 [2023-08-25 20:23:34,057 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:23:34,058 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:23:36,176 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-08-25 20:23:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:23:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539049523] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:23:36,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:23:36,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-25 20:23:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581907194] [2023-08-25 20:23:36,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:23:36,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 20:23:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:36,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 20:23:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=347, Unknown=4, NotChecked=0, Total=420 [2023-08-25 20:23:36,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 454 [2023-08-25 20:23:36,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 668 flow. Second operand has 21 states, 21 states have (on average 170.85714285714286) internal successors, (3588), 21 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:36,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:36,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 454 [2023-08-25 20:23:36,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:38,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 20:23:46,545 INFO L124 PetriNetUnfolderBase]: 31981/50437 cut-off events. [2023-08-25 20:23:46,545 INFO L125 PetriNetUnfolderBase]: For 134336/141851 co-relation queries the response was YES. [2023-08-25 20:23:46,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161622 conditions, 50437 events. 31981/50437 cut-off events. For 134336/141851 co-relation queries the response was YES. Maximal size of possible extension queue 2435. Compared 414590 event pairs, 3406 based on Foata normal form. 3736/53044 useless extension candidates. Maximal degree in co-relation 161602. Up to 14547 conditions per place. [2023-08-25 20:23:46,840 INFO L140 encePairwiseOnDemand]: 444/454 looper letters, 386 selfloop transitions, 145 changer transitions 407/962 dead transitions. [2023-08-25 20:23:46,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 962 transitions, 8713 flow [2023-08-25 20:23:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 20:23:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 20:23:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4389 transitions. [2023-08-25 20:23:46,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40280837004405284 [2023-08-25 20:23:46,852 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4389 transitions. [2023-08-25 20:23:46,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4389 transitions. [2023-08-25 20:23:46,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:46,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4389 transitions. [2023-08-25 20:23:46,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 182.875) internal successors, (4389), 24 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:46,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 454.0) internal successors, (11350), 25 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:46,877 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 454.0) internal successors, (11350), 25 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:46,877 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 668 flow. Second operand 24 states and 4389 transitions. [2023-08-25 20:23:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 962 transitions, 8713 flow [2023-08-25 20:23:47,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 962 transitions, 8548 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 20:23:47,375 INFO L231 Difference]: Finished difference. Result has 136 places, 280 transitions, 3041 flow [2023-08-25 20:23:47,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3041, PETRI_PLACES=136, PETRI_TRANSITIONS=280} [2023-08-25 20:23:47,375 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 29 predicate places. [2023-08-25 20:23:47,376 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 280 transitions, 3041 flow [2023-08-25 20:23:47,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 170.85714285714286) internal successors, (3588), 21 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:47,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:23:47,377 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:23:47,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 20:23:47,583 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,SelfDestructingSolverStorable12 [2023-08-25 20:23:47,583 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:23:47,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:23:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash -458462851, now seen corresponding path program 2 times [2023-08-25 20:23:47,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:23:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615538597] [2023-08-25 20:23:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:23:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:23:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:23:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:23:48,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:23:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615538597] [2023-08-25 20:23:48,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615538597] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:23:48,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743094652] [2023-08-25 20:23:48,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:23:48,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:23:48,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:23:48,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:23:48,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 20:23:49,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:23:49,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:23:49,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 20:23:49,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:23:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:23:49,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:23:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:23:49,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743094652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:23:49,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:23:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 6 [2023-08-25 20:23:49,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466405010] [2023-08-25 20:23:49,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:23:49,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 20:23:49,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:23:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 20:23:49,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-25 20:23:49,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 454 [2023-08-25 20:23:49,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 280 transitions, 3041 flow. Second operand has 8 states, 8 states have (on average 207.875) internal successors, (1663), 8 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:49,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:23:49,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 454 [2023-08-25 20:23:49,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:23:56,957 INFO L124 PetriNetUnfolderBase]: 28751/48615 cut-off events. [2023-08-25 20:23:56,957 INFO L125 PetriNetUnfolderBase]: For 942521/956311 co-relation queries the response was YES. [2023-08-25 20:23:57,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239023 conditions, 48615 events. 28751/48615 cut-off events. For 942521/956311 co-relation queries the response was YES. Maximal size of possible extension queue 2695. Compared 444298 event pairs, 1793 based on Foata normal form. 3752/50524 useless extension candidates. Maximal degree in co-relation 238983. Up to 17147 conditions per place. [2023-08-25 20:23:57,389 INFO L140 encePairwiseOnDemand]: 449/454 looper letters, 655 selfloop transitions, 22 changer transitions 109/819 dead transitions. [2023-08-25 20:23:57,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 819 transitions, 11263 flow [2023-08-25 20:23:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 20:23:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 20:23:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1479 transitions. [2023-08-25 20:23:57,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653870358716174 [2023-08-25 20:23:57,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1479 transitions. [2023-08-25 20:23:57,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1479 transitions. [2023-08-25 20:23:57,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:23:57,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1479 transitions. [2023-08-25 20:23:57,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 211.28571428571428) internal successors, (1479), 7 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:57,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:57,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 454.0) internal successors, (3632), 8 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:23:57,400 INFO L175 Difference]: Start difference. First operand has 136 places, 280 transitions, 3041 flow. Second operand 7 states and 1479 transitions. [2023-08-25 20:23:57,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 819 transitions, 11263 flow [2023-08-25 20:24:05,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 819 transitions, 10505 flow, removed 375 selfloop flow, removed 7 redundant places. [2023-08-25 20:24:05,142 INFO L231 Difference]: Finished difference. Result has 134 places, 271 transitions, 2563 flow [2023-08-25 20:24:05,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2563, PETRI_PLACES=134, PETRI_TRANSITIONS=271} [2023-08-25 20:24:05,143 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 27 predicate places. [2023-08-25 20:24:05,143 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 271 transitions, 2563 flow [2023-08-25 20:24:05,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 207.875) internal successors, (1663), 8 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:05,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:24:05,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:24:05,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 20:24:05,344 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,SelfDestructingSolverStorable13 [2023-08-25 20:24:05,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:24:05,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:24:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1850152233, now seen corresponding path program 3 times [2023-08-25 20:24:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:24:05,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673762790] [2023-08-25 20:24:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:24:05,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:24:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:24:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:24:06,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:24:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673762790] [2023-08-25 20:24:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673762790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:24:06,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114135809] [2023-08-25 20:24:06,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:24:06,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:24:06,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:24:06,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:24:06,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 20:24:06,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:24:06,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:24:06,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-25 20:24:06,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:24:07,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:24:07,018 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-25 20:24:07,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 20:24:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:24:07,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:24:07,432 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:24:07,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 79 [2023-08-25 20:24:07,467 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:24:07,467 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:24:07,649 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:24:07,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 95 [2023-08-25 20:24:07,668 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:24:07,669 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:24:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:24:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114135809] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 20:24:07,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 20:24:07,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 9] total 21 [2023-08-25 20:24:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609194386] [2023-08-25 20:24:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:24:07,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 20:24:07,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:24:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 20:24:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-08-25 20:24:07,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 454 [2023-08-25 20:24:07,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 271 transitions, 2563 flow. Second operand has 7 states, 7 states have (on average 177.42857142857142) internal successors, (1242), 7 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:07,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:24:07,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 454 [2023-08-25 20:24:07,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:24:24,830 INFO L124 PetriNetUnfolderBase]: 63880/110327 cut-off events. [2023-08-25 20:24:24,830 INFO L125 PetriNetUnfolderBase]: For 1514508/1552488 co-relation queries the response was YES. [2023-08-25 20:24:25,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507210 conditions, 110327 events. 63880/110327 cut-off events. For 1514508/1552488 co-relation queries the response was YES. Maximal size of possible extension queue 5459. Compared 1121760 event pairs, 12582 based on Foata normal form. 8128/114507 useless extension candidates. Maximal degree in co-relation 507173. Up to 32549 conditions per place. [2023-08-25 20:24:25,880 INFO L140 encePairwiseOnDemand]: 441/454 looper letters, 700 selfloop transitions, 128 changer transitions 154/1015 dead transitions. [2023-08-25 20:24:25,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 1015 transitions, 12904 flow [2023-08-25 20:24:25,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 20:24:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 20:24:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2088 transitions. [2023-08-25 20:24:25,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181017220664798 [2023-08-25 20:24:25,885 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2088 transitions. [2023-08-25 20:24:25,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2088 transitions. [2023-08-25 20:24:25,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:24:25,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2088 transitions. [2023-08-25 20:24:25,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 189.8181818181818) internal successors, (2088), 11 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:25,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 454.0) internal successors, (5448), 12 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:25,895 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 454.0) internal successors, (5448), 12 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:25,895 INFO L175 Difference]: Start difference. First operand has 134 places, 271 transitions, 2563 flow. Second operand 11 states and 2088 transitions. [2023-08-25 20:24:25,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 1015 transitions, 12904 flow [2023-08-25 20:24:41,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 1015 transitions, 12904 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:24:41,936 INFO L231 Difference]: Finished difference. Result has 154 places, 385 transitions, 4543 flow [2023-08-25 20:24:41,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=454, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4543, PETRI_PLACES=154, PETRI_TRANSITIONS=385} [2023-08-25 20:24:41,937 INFO L281 CegarLoopForPetriNet]: 107 programPoint places, 47 predicate places. [2023-08-25 20:24:41,937 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 385 transitions, 4543 flow [2023-08-25 20:24:41,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 177.42857142857142) internal successors, (1242), 7 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:41,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:24:41,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:24:41,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 20:24:42,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:24:42,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 20:24:42,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:24:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash 604064999, now seen corresponding path program 4 times [2023-08-25 20:24:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:24:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341491753] [2023-08-25 20:24:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:24:42,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:24:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:24:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:24:43,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:24:43,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341491753] [2023-08-25 20:24:43,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341491753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:24:43,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689156131] [2023-08-25 20:24:43,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:24:43,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:24:43,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:24:43,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:24:43,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 20:24:43,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:24:43,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:24:43,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 20:24:43,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:24:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:24:43,786 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-25 20:24:43,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:24:43,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-25 20:24:44,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:24:44,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:24:44,225 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:24:44,226 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 79 [2023-08-25 20:24:44,247 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:24:44,248 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-25 20:24:44,527 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork1_~i~0 4)))) (and (forall ((v_ArrVal_1716 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1716) c_~A~0.base))) (or (<= (select .cse0 .cse1) c_~min~0) (<= c_~min~0 (+ (select .cse0 c_~A~0.offset) 1))))) (forall ((v_ArrVal_1716 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1716) c_~A~0.base))) (let ((.cse2 (select .cse3 .cse1))) (or (<= .cse2 (+ (select .cse3 c_~A~0.offset) 1)) (< c_~min~0 .cse2))))))) is different from false [2023-08-25 20:24:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:24:44,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689156131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:24:44,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:24:44,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 27 [2023-08-25 20:24:44,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214075718] [2023-08-25 20:24:44,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:24:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 20:24:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:24:44,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 20:24:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=576, Unknown=1, NotChecked=50, Total=756 [2023-08-25 20:24:44,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 454 [2023-08-25 20:24:44,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 385 transitions, 4543 flow. Second operand has 28 states, 28 states have (on average 157.32142857142858) internal successors, (4405), 28 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:24:44,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:24:44,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 454 [2023-08-25 20:24:44,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand