/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-bad-buffer-mult-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 19:55:17,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 19:55:17,291 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 19:55:17,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 19:55:17,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 19:55:17,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 19:55:17,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 19:55:17,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 19:55:17,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 19:55:17,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 19:55:17,335 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 19:55:17,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 19:55:17,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 19:55:17,337 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 19:55:17,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 19:55:17,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 19:55:17,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 19:55:17,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 19:55:17,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 19:55:17,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 19:55:17,339 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 19:55:17,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 19:55:17,340 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 19:55:17,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 19:55:17,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 19:55:17,341 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 19:55:17,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 19:55:17,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:55:17,342 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 19:55:17,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 19:55:17,343 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 19:55:17,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 19:55:17,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 19:55:17,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 19:55:17,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 19:55:17,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 19:55:17,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 19:55:17,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 19:55:17,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 19:55:17,670 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 19:55:17,670 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 19:55:17,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-25 19:55:18,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 19:55:19,039 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 19:55:19,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-08-25 19:55:19,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee55562df/5752053c3af54539b3908ff26241ebf2/FLAG3638c18b0 [2023-08-25 19:55:19,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee55562df/5752053c3af54539b3908ff26241ebf2 [2023-08-25 19:55:19,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 19:55:19,075 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 19:55:19,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 19:55:19,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 19:55:19,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 19:55:19,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204dcb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19, skipping insertion in model container [2023-08-25 19:55:19,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,118 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 19:55:19,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:55:19,352 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 19:55:19,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:55:19,416 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 19:55:19,416 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 19:55:19,423 INFO L206 MainTranslator]: Completed translation [2023-08-25 19:55:19,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19 WrapperNode [2023-08-25 19:55:19,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 19:55:19,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 19:55:19,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 19:55:19,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 19:55:19,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,494 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 656 [2023-08-25 19:55:19,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 19:55:19,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 19:55:19,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 19:55:19,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 19:55:19,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,529 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 19:55:19,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 19:55:19,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 19:55:19,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 19:55:19,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (1/1) ... [2023-08-25 19:55:19,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:55:19,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:55:19,573 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 19:55:19,592 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 19:55:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 19:55:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 19:55:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 19:55:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 19:55:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 19:55:19,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 19:55:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 19:55:19,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 19:55:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 19:55:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 19:55:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-25 19:55:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-25 19:55:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 19:55:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 19:55:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 19:55:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 19:55:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 19:55:19,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 19:55:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 19:55:19,620 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 19:55:19,752 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 19:55:19,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 19:55:20,474 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 19:55:21,040 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 19:55:21,040 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-25 19:55:21,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:55:21 BoogieIcfgContainer [2023-08-25 19:55:21,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 19:55:21,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 19:55:21,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 19:55:21,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 19:55:21,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:55:19" (1/3) ... [2023-08-25 19:55:21,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161cac12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:55:21, skipping insertion in model container [2023-08-25 19:55:21,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:55:19" (2/3) ... [2023-08-25 19:55:21,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161cac12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:55:21, skipping insertion in model container [2023-08-25 19:55:21,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:55:21" (3/3) ... [2023-08-25 19:55:21,052 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-08-25 19:55:21,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 19:55:21,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2023-08-25 19:55:21,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 19:55:21,268 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 19:55:21,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 461 transitions, 954 flow [2023-08-25 19:55:21,484 INFO L124 PetriNetUnfolderBase]: 23/457 cut-off events. [2023-08-25 19:55:21,485 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 19:55:21,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 457 events. 23/457 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 648 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 372. Up to 2 conditions per place. [2023-08-25 19:55:21,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 461 transitions, 954 flow [2023-08-25 19:55:21,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 444 transitions, 912 flow [2023-08-25 19:55:21,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 19:55:21,511 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 444 transitions, 912 flow [2023-08-25 19:55:21,513 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 444 transitions, 912 flow [2023-08-25 19:55:21,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 444 transitions, 912 flow [2023-08-25 19:55:21,572 INFO L124 PetriNetUnfolderBase]: 23/444 cut-off events. [2023-08-25 19:55:21,572 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 19:55:21,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 444 events. 23/444 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 644 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 372. Up to 2 conditions per place. [2023-08-25 19:55:21,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 14264 [2023-08-25 19:55:36,647 INFO L134 LiptonReduction]: Checked pairs total: 66547 [2023-08-25 19:55:36,648 INFO L136 LiptonReduction]: Total number of compositions: 460 [2023-08-25 19:55:36,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 19:55:36,667 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;@31e9197c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 19:55:36,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 174 error locations. [2023-08-25 19:55:36,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 19:55:36,668 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 19:55:36,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:55:36,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:36,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 19:55:36,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:36,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2516, now seen corresponding path program 1 times [2023-08-25 19:55:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:36,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457212717] [2023-08-25 19:55:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:36,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:36,779 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 19:55:36,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:36,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457212717] [2023-08-25 19:55:36,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457212717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:36,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:36,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 19:55:36,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902366399] [2023-08-25 19:55:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:36,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 19:55:36,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:36,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 19:55:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 19:55:36,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 921 [2023-08-25 19:55:36,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 152 transitions, 328 flow. Second operand has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 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 19:55:36,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:36,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 921 [2023-08-25 19:55:36,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:37,497 INFO L124 PetriNetUnfolderBase]: 2707/4300 cut-off events. [2023-08-25 19:55:37,498 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-25 19:55:37,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8121 conditions, 4300 events. 2707/4300 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20974 event pairs, 1965 based on Foata normal form. 0/3362 useless extension candidates. Maximal degree in co-relation 6344. Up to 3561 conditions per place. [2023-08-25 19:55:37,527 INFO L140 encePairwiseOnDemand]: 826/921 looper letters, 37 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-25 19:55:37,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 212 flow [2023-08-25 19:55:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 19:55:37,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 19:55:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 846 transitions. [2023-08-25 19:55:37,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592833876221498 [2023-08-25 19:55:37,547 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 846 transitions. [2023-08-25 19:55:37,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 846 transitions. [2023-08-25 19:55:37,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:37,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 846 transitions. [2023-08-25 19:55:37,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 423.0) internal successors, (846), 2 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:55:37,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 921.0) internal successors, (2763), 3 states have internal predecessors, (2763), 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 19:55:37,568 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 921.0) internal successors, (2763), 3 states have internal predecessors, (2763), 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 19:55:37,570 INFO L175 Difference]: Start difference. First operand has 159 places, 152 transitions, 328 flow. Second operand 2 states and 846 transitions. [2023-08-25 19:55:37,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 212 flow [2023-08-25 19:55:37,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-25 19:55:37,583 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 122 flow [2023-08-25 19:55:37,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2023-08-25 19:55:37,591 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -102 predicate places. [2023-08-25 19:55:37,591 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 122 flow [2023-08-25 19:55:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 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 19:55:37,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:37,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 19:55:37,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:37,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash 313965161, now seen corresponding path program 1 times [2023-08-25 19:55:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:37,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867841277] [2023-08-25 19:55:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:37,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:38,307 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 19:55:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867841277] [2023-08-25 19:55:38,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867841277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:38,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:55:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996579273] [2023-08-25 19:55:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:38,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:55:38,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:38,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:55:38,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:55:38,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 921 [2023-08-25 19:55:38,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 317.5) internal successors, (1905), 6 states have internal predecessors, (1905), 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 19:55:38,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:38,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 921 [2023-08-25 19:55:38,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:39,783 INFO L124 PetriNetUnfolderBase]: 7943/10240 cut-off events. [2023-08-25 19:55:39,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:55:39,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20568 conditions, 10240 events. 7943/10240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 37652 event pairs, 855 based on Foata normal form. 0/8105 useless extension candidates. Maximal degree in co-relation 20565. Up to 4746 conditions per place. [2023-08-25 19:55:39,831 INFO L140 encePairwiseOnDemand]: 916/921 looper letters, 116 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-25 19:55:39,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 120 transitions, 488 flow [2023-08-25 19:55:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:55:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:55:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2011 transitions. [2023-08-25 19:55:39,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639160332971408 [2023-08-25 19:55:39,838 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2011 transitions. [2023-08-25 19:55:39,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2011 transitions. [2023-08-25 19:55:39,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:39,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2011 transitions. [2023-08-25 19:55:39,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.1666666666667) internal successors, (2011), 6 states have internal predecessors, (2011), 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 19:55:39,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:39,854 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:39,854 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 122 flow. Second operand 6 states and 2011 transitions. [2023-08-25 19:55:39,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 120 transitions, 488 flow [2023-08-25 19:55:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 120 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:55:39,857 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 128 flow [2023-08-25 19:55:39,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-25 19:55:39,858 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -98 predicate places. [2023-08-25 19:55:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 128 flow [2023-08-25 19:55:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 317.5) internal successors, (1905), 6 states have internal predecessors, (1905), 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 19:55:39,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:39,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:39,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 19:55:39,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:39,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash 17829368, now seen corresponding path program 1 times [2023-08-25 19:55:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283753832] [2023-08-25 19:55:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:40,287 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 19:55:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283753832] [2023-08-25 19:55:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283753832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:40,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:40,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:55:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130037470] [2023-08-25 19:55:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:55:40,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:55:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:55:40,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 921 [2023-08-25 19:55:40,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 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 19:55:40,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:40,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 921 [2023-08-25 19:55:40,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:41,516 INFO L124 PetriNetUnfolderBase]: 7751/9984 cut-off events. [2023-08-25 19:55:41,516 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2023-08-25 19:55:41,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 9984 events. 7751/9984 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 36076 event pairs, 4839 based on Foata normal form. 0/7961 useless extension candidates. Maximal degree in co-relation 21077. Up to 8311 conditions per place. [2023-08-25 19:55:41,565 INFO L140 encePairwiseOnDemand]: 916/921 looper letters, 99 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-25 19:55:41,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 428 flow [2023-08-25 19:55:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:55:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:55:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1994 transitions. [2023-08-25 19:55:41,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608396670285921 [2023-08-25 19:55:41,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1994 transitions. [2023-08-25 19:55:41,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1994 transitions. [2023-08-25 19:55:41,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:41,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1994 transitions. [2023-08-25 19:55:41,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 332.3333333333333) internal successors, (1994), 6 states have internal predecessors, (1994), 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 19:55:41,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:41,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:41,588 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 128 flow. Second operand 6 states and 1994 transitions. [2023-08-25 19:55:41,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 428 flow [2023-08-25 19:55:41,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 421 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:55:41,598 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 127 flow [2023-08-25 19:55:41,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-25 19:55:41,599 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -98 predicate places. [2023-08-25 19:55:41,599 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 127 flow [2023-08-25 19:55:41,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 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 19:55:41,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:41,601 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, 1, 1, 1, 1] [2023-08-25 19:55:41,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 19:55:41,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:41,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 992474920, now seen corresponding path program 1 times [2023-08-25 19:55:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439280378] [2023-08-25 19:55:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:42,034 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 19:55:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439280378] [2023-08-25 19:55:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439280378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:42,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:55:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477901088] [2023-08-25 19:55:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:42,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:55:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:55:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:55:42,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 921 [2023-08-25 19:55:42,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 320.1666666666667) internal successors, (1921), 6 states have internal predecessors, (1921), 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 19:55:42,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:42,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 921 [2023-08-25 19:55:42,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:43,152 INFO L124 PetriNetUnfolderBase]: 7719/9936 cut-off events. [2023-08-25 19:55:43,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:55:43,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20473 conditions, 9936 events. 7719/9936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 35929 event pairs, 5583 based on Foata normal form. 0/7937 useless extension candidates. Maximal degree in co-relation 20469. Up to 9639 conditions per place. [2023-08-25 19:55:43,201 INFO L140 encePairwiseOnDemand]: 916/921 looper letters, 82 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-25 19:55:43,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 361 flow [2023-08-25 19:55:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:55:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:55:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1977 transitions. [2023-08-25 19:55:43,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577633007600434 [2023-08-25 19:55:43,207 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1977 transitions. [2023-08-25 19:55:43,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1977 transitions. [2023-08-25 19:55:43,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:43,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1977 transitions. [2023-08-25 19:55:43,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 329.5) internal successors, (1977), 6 states have internal predecessors, (1977), 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 19:55:43,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:43,223 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:43,223 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 127 flow. Second operand 6 states and 1977 transitions. [2023-08-25 19:55:43,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 361 flow [2023-08-25 19:55:43,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:55:43,227 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 126 flow [2023-08-25 19:55:43,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-25 19:55:43,228 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -98 predicate places. [2023-08-25 19:55:43,228 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 126 flow [2023-08-25 19:55:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.1666666666667) internal successors, (1921), 6 states have internal predecessors, (1921), 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 19:55:43,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:43,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:43,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 19:55:43,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:43,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1986684763, now seen corresponding path program 1 times [2023-08-25 19:55:43,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:43,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838831521] [2023-08-25 19:55:43,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:43,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:43,745 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 19:55:43,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:43,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838831521] [2023-08-25 19:55:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838831521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:43,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:43,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:55:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991738671] [2023-08-25 19:55:43,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:43,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:55:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:55:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:55:43,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 921 [2023-08-25 19:55:43,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 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 19:55:43,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:43,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 921 [2023-08-25 19:55:43,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:44,707 INFO L124 PetriNetUnfolderBase]: 7715/9928 cut-off events. [2023-08-25 19:55:44,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:55:44,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20329 conditions, 9928 events. 7715/9928 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 35872 event pairs, 5706 based on Foata normal form. 0/7934 useless extension candidates. Maximal degree in co-relation 20325. Up to 9887 conditions per place. [2023-08-25 19:55:44,749 INFO L140 encePairwiseOnDemand]: 916/921 looper letters, 65 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-25 19:55:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 294 flow [2023-08-25 19:55:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:55:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:55:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1960 transitions. [2023-08-25 19:55:44,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35468693449149474 [2023-08-25 19:55:44,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1960 transitions. [2023-08-25 19:55:44,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1960 transitions. [2023-08-25 19:55:44,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:44,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1960 transitions. [2023-08-25 19:55:44,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.6666666666667) internal successors, (1960), 6 states have internal predecessors, (1960), 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 19:55:44,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:44,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:44,773 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 126 flow. Second operand 6 states and 1960 transitions. [2023-08-25 19:55:44,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 294 flow [2023-08-25 19:55:44,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:55:44,776 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 125 flow [2023-08-25 19:55:44,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-08-25 19:55:44,779 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -98 predicate places. [2023-08-25 19:55:44,780 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 125 flow [2023-08-25 19:55:44,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 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 19:55:44,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:44,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:44,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 19:55:44,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:44,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1284038296, now seen corresponding path program 1 times [2023-08-25 19:55:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031257396] [2023-08-25 19:55:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:44,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:45,067 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 19:55:45,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:45,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031257396] [2023-08-25 19:55:45,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031257396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:45,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:45,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 19:55:45,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468817035] [2023-08-25 19:55:45,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:45,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:55:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:45,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:55:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 19:55:45,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 921 [2023-08-25 19:55:45,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 356.4) internal successors, (1782), 5 states have internal predecessors, (1782), 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 19:55:45,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:45,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 921 [2023-08-25 19:55:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:45,696 INFO L124 PetriNetUnfolderBase]: 3269/4692 cut-off events. [2023-08-25 19:55:45,696 INFO L125 PetriNetUnfolderBase]: For 37/261 co-relation queries the response was YES. [2023-08-25 19:55:45,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9206 conditions, 4692 events. 3269/4692 cut-off events. For 37/261 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20864 event pairs, 279 based on Foata normal form. 32/3868 useless extension candidates. Maximal degree in co-relation 9202. Up to 2993 conditions per place. [2023-08-25 19:55:45,714 INFO L140 encePairwiseOnDemand]: 916/921 looper letters, 72 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2023-08-25 19:55:45,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 361 flow [2023-08-25 19:55:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:55:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:55:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1832 transitions. [2023-08-25 19:55:45,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397828447339848 [2023-08-25 19:55:45,719 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1832 transitions. [2023-08-25 19:55:45,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1832 transitions. [2023-08-25 19:55:45,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:45,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1832 transitions. [2023-08-25 19:55:45,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 366.4) internal successors, (1832), 5 states have internal predecessors, (1832), 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 19:55:45,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 921.0) internal successors, (5526), 6 states have internal predecessors, (5526), 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 19:55:45,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 921.0) internal successors, (5526), 6 states have internal predecessors, (5526), 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 19:55:45,742 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 125 flow. Second operand 5 states and 1832 transitions. [2023-08-25 19:55:45,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 361 flow [2023-08-25 19:55:45,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:55:45,744 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 134 flow [2023-08-25 19:55:45,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-08-25 19:55:45,744 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -97 predicate places. [2023-08-25 19:55:45,744 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 134 flow [2023-08-25 19:55:45,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 356.4) internal successors, (1782), 5 states have internal predecessors, (1782), 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 19:55:45,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:45,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:45,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 19:55:45,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:45,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -846924499, now seen corresponding path program 1 times [2023-08-25 19:55:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:45,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433995714] [2023-08-25 19:55:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:55:45,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:45,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433995714] [2023-08-25 19:55:45,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433995714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:45,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:45,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:55:45,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841513386] [2023-08-25 19:55:45,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:45,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 19:55:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 19:55:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 19:55:45,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 921 [2023-08-25 19:55:45,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 325.25) internal successors, (1301), 4 states have internal predecessors, (1301), 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 19:55:45,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:45,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 921 [2023-08-25 19:55:45,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:46,589 INFO L124 PetriNetUnfolderBase]: 3913/5951 cut-off events. [2023-08-25 19:55:46,590 INFO L125 PetriNetUnfolderBase]: For 1446/1446 co-relation queries the response was YES. [2023-08-25 19:55:46,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12467 conditions, 5951 events. 3913/5951 cut-off events. For 1446/1446 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 28698 event pairs, 2944 based on Foata normal form. 130/5065 useless extension candidates. Maximal degree in co-relation 12462. Up to 4293 conditions per place. [2023-08-25 19:55:46,612 INFO L140 encePairwiseOnDemand]: 916/921 looper letters, 37 selfloop transitions, 2 changer transitions 22/77 dead transitions. [2023-08-25 19:55:46,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 311 flow [2023-08-25 19:55:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 19:55:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 19:55:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1334 transitions. [2023-08-25 19:55:46,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36210640608034744 [2023-08-25 19:55:46,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1334 transitions. [2023-08-25 19:55:46,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1334 transitions. [2023-08-25 19:55:46,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:46,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1334 transitions. [2023-08-25 19:55:46,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 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 19:55:46,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 921.0) internal successors, (4605), 5 states have internal predecessors, (4605), 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 19:55:46,624 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 921.0) internal successors, (4605), 5 states have internal predecessors, (4605), 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 19:55:46,624 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 134 flow. Second operand 4 states and 1334 transitions. [2023-08-25 19:55:46,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 311 flow [2023-08-25 19:55:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 19:55:46,627 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 144 flow [2023-08-25 19:55:46,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-08-25 19:55:46,628 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -95 predicate places. [2023-08-25 19:55:46,628 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 144 flow [2023-08-25 19:55:46,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.25) internal successors, (1301), 4 states have internal predecessors, (1301), 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 19:55:46,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:46,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:55:46,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 19:55:46,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:46,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash 855107921, now seen corresponding path program 1 times [2023-08-25 19:55:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449090105] [2023-08-25 19:55:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:55:47,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:47,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449090105] [2023-08-25 19:55:47,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449090105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:47,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:55:47,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089943230] [2023-08-25 19:55:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:47,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:55:47,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:55:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:55:47,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 921 [2023-08-25 19:55:47,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 348.2857142857143) internal successors, (2438), 7 states have internal predecessors, (2438), 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 19:55:47,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:47,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 921 [2023-08-25 19:55:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:48,278 INFO L124 PetriNetUnfolderBase]: 6397/9015 cut-off events. [2023-08-25 19:55:48,278 INFO L125 PetriNetUnfolderBase]: For 1266/1778 co-relation queries the response was YES. [2023-08-25 19:55:48,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19642 conditions, 9015 events. 6397/9015 cut-off events. For 1266/1778 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 42989 event pairs, 1597 based on Foata normal form. 221/7876 useless extension candidates. Maximal degree in co-relation 19635. Up to 3554 conditions per place. [2023-08-25 19:55:48,332 INFO L140 encePairwiseOnDemand]: 913/921 looper letters, 149 selfloop transitions, 23 changer transitions 0/188 dead transitions. [2023-08-25 19:55:48,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 188 transitions, 799 flow [2023-08-25 19:55:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:55:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:55:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3613 transitions. [2023-08-25 19:55:48,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39229098805646034 [2023-08-25 19:55:48,340 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3613 transitions. [2023-08-25 19:55:48,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3613 transitions. [2023-08-25 19:55:48,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:48,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3613 transitions. [2023-08-25 19:55:48,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 361.3) internal successors, (3613), 10 states have internal predecessors, (3613), 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 19:55:48,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 921.0) internal successors, (10131), 11 states have internal predecessors, (10131), 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 19:55:48,359 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 921.0) internal successors, (10131), 11 states have internal predecessors, (10131), 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 19:55:48,359 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 144 flow. Second operand 10 states and 3613 transitions. [2023-08-25 19:55:48,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 188 transitions, 799 flow [2023-08-25 19:55:48,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 188 transitions, 795 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 19:55:48,363 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 312 flow [2023-08-25 19:55:48,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2023-08-25 19:55:48,364 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -81 predicate places. [2023-08-25 19:55:48,364 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 312 flow [2023-08-25 19:55:48,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 348.2857142857143) internal successors, (2438), 7 states have internal predecessors, (2438), 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 19:55:48,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:48,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:48,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 19:55:48,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:48,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:48,366 INFO L85 PathProgramCache]: Analyzing trace with hash 645589789, now seen corresponding path program 2 times [2023-08-25 19:55:48,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:48,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112086976] [2023-08-25 19:55:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:55:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112086976] [2023-08-25 19:55:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112086976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:55:48,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:55:48,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 19:55:48,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811911038] [2023-08-25 19:55:48,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:55:48,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:55:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:55:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 19:55:48,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 921 [2023-08-25 19:55:48,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 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 19:55:48,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:48,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 921 [2023-08-25 19:55:48,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:49,943 INFO L124 PetriNetUnfolderBase]: 7685/11183 cut-off events. [2023-08-25 19:55:49,943 INFO L125 PetriNetUnfolderBase]: For 12038/12574 co-relation queries the response was YES. [2023-08-25 19:55:49,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32842 conditions, 11183 events. 7685/11183 cut-off events. For 12038/12574 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 56895 event pairs, 499 based on Foata normal form. 248/10364 useless extension candidates. Maximal degree in co-relation 32828. Up to 7291 conditions per place. [2023-08-25 19:55:50,022 INFO L140 encePairwiseOnDemand]: 915/921 looper letters, 108 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2023-08-25 19:55:50,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 133 transitions, 756 flow [2023-08-25 19:55:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:55:50,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:55:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2197 transitions. [2023-08-25 19:55:50,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39757509952949693 [2023-08-25 19:55:50,028 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2197 transitions. [2023-08-25 19:55:50,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2197 transitions. [2023-08-25 19:55:50,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:55:50,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2197 transitions. [2023-08-25 19:55:50,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 366.1666666666667) internal successors, (2197), 6 states have internal predecessors, (2197), 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 19:55:50,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:50,040 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:55:50,040 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 312 flow. Second operand 6 states and 2197 transitions. [2023-08-25 19:55:50,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 133 transitions, 756 flow [2023-08-25 19:55:50,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 133 transitions, 717 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-25 19:55:50,155 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 359 flow [2023-08-25 19:55:50,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2023-08-25 19:55:50,156 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -76 predicate places. [2023-08-25 19:55:50,156 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 359 flow [2023-08-25 19:55:50,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 357.0) internal successors, (1785), 5 states have internal predecessors, (1785), 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 19:55:50,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:55:50,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:55:50,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 19:55:50,157 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:55:50,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:55:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash 516570440, now seen corresponding path program 1 times [2023-08-25 19:55:50,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:55:50,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368104318] [2023-08-25 19:55:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:55:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:55:51,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:55:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368104318] [2023-08-25 19:55:51,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368104318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:55:51,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80277097] [2023-08-25 19:55:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:55:51,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:55:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:55:51,767 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 19:55:51,770 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 19:55:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:55:52,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 19:55:52,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:55:52,166 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 15 treesize of output 11 [2023-08-25 19:55:52,269 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 19:55:52,431 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 19:55:52,503 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 19:55:52,581 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 19:55:52,733 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 23 treesize of output 7 [2023-08-25 19:55:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:55:52,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:55:53,731 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:55:53,732 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 61 [2023-08-25 19:55:53,747 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 41195 treesize of output 40171 [2023-08-25 19:55:53,821 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 299 treesize of output 287 [2023-08-25 19:55:53,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 287 treesize of output 263 [2023-08-25 19:55:53,860 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 263 treesize of output 215 [2023-08-25 19:55:53,878 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 309 treesize of output 213 [2023-08-25 19:55:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:55:54,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80277097] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:55:54,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:55:54,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 29 [2023-08-25 19:55:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946618244] [2023-08-25 19:55:54,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:55:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 19:55:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:55:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 19:55:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=755, Unknown=12, NotChecked=0, Total=930 [2023-08-25 19:55:54,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 921 [2023-08-25 19:55:54,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 359 flow. Second operand has 31 states, 31 states have (on average 249.09677419354838) internal successors, (7722), 31 states have internal predecessors, (7722), 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 19:55:54,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:55:54,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 921 [2023-08-25 19:55:54,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:55:57,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 19:56:00,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 19:56:04,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 19:56:21,988 INFO L124 PetriNetUnfolderBase]: 83796/109721 cut-off events. [2023-08-25 19:56:21,988 INFO L125 PetriNetUnfolderBase]: For 167187/167187 co-relation queries the response was YES. [2023-08-25 19:56:22,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330305 conditions, 109721 events. 83796/109721 cut-off events. For 167187/167187 co-relation queries the response was YES. Maximal size of possible extension queue 2053. Compared 597555 event pairs, 7823 based on Foata normal form. 165/96333 useless extension candidates. Maximal degree in co-relation 330290. Up to 28865 conditions per place. [2023-08-25 19:56:22,755 INFO L140 encePairwiseOnDemand]: 904/921 looper letters, 778 selfloop transitions, 191 changer transitions 3/972 dead transitions. [2023-08-25 19:56:22,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 972 transitions, 5264 flow [2023-08-25 19:56:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-25 19:56:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-25 19:56:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 11168 transitions. [2023-08-25 19:56:22,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2887130965306861 [2023-08-25 19:56:22,934 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 11168 transitions. [2023-08-25 19:56:22,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 11168 transitions. [2023-08-25 19:56:22,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:22,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 11168 transitions. [2023-08-25 19:56:22,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 265.9047619047619) internal successors, (11168), 42 states have internal predecessors, (11168), 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 19:56:23,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 921.0) internal successors, (39603), 43 states have internal predecessors, (39603), 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 19:56:23,016 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 921.0) internal successors, (39603), 43 states have internal predecessors, (39603), 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 19:56:23,016 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 359 flow. Second operand 42 states and 11168 transitions. [2023-08-25 19:56:23,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 972 transitions, 5264 flow [2023-08-25 19:56:28,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 972 transitions, 5194 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-25 19:56:28,076 INFO L231 Difference]: Finished difference. Result has 144 places, 279 transitions, 2117 flow [2023-08-25 19:56:28,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2117, PETRI_PLACES=144, PETRI_TRANSITIONS=279} [2023-08-25 19:56:28,076 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -15 predicate places. [2023-08-25 19:56:28,077 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 279 transitions, 2117 flow [2023-08-25 19:56:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 249.09677419354838) internal successors, (7722), 31 states have internal predecessors, (7722), 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 19:56:28,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:28,079 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:28,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 19:56:28,285 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,SelfDestructingSolverStorable9 [2023-08-25 19:56:28,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:56:28,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -203442978, now seen corresponding path program 2 times [2023-08-25 19:56:28,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:28,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392882343] [2023-08-25 19:56:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:30,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:30,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392882343] [2023-08-25 19:56:30,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392882343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:30,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907731186] [2023-08-25 19:56:30,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:56:30,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:30,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:30,570 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 19:56:30,572 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 19:56:30,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:56:30,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:30,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-25 19:56:30,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:56:31,159 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 18 treesize of output 20 [2023-08-25 19:56:31,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:56:31,215 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 18 treesize of output 20 [2023-08-25 19:56:31,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:56:31,278 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 18 treesize of output 20 [2023-08-25 19:56:31,416 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 23 treesize of output 7 [2023-08-25 19:56:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:31,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:31,683 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_814 (Array Int Int)) (v_ArrVal_816 (Array Int Int)) (v_ArrVal_815 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_814) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_815) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_816) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2023-08-25 19:56:31,702 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:31,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 341 treesize of output 325 [2023-08-25 19:56:31,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 73 treesize of output 61 [2023-08-25 19:56:31,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 61 treesize of output 55 [2023-08-25 19:56:31,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 74 treesize of output 50 [2023-08-25 19:56:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:31,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907731186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:31,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:31,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 19:56:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862720401] [2023-08-25 19:56:31,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:31,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 19:56:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 19:56:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=420, Unknown=7, NotChecked=42, Total=552 [2023-08-25 19:56:31,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 921 [2023-08-25 19:56:31,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 279 transitions, 2117 flow. Second operand has 24 states, 24 states have (on average 259.2083333333333) internal successors, (6221), 24 states have internal predecessors, (6221), 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 19:56:31,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:31,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 921 [2023-08-25 19:56:31,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:52,226 INFO L124 PetriNetUnfolderBase]: 106025/138937 cut-off events. [2023-08-25 19:56:52,226 INFO L125 PetriNetUnfolderBase]: For 359416/359416 co-relation queries the response was YES. [2023-08-25 19:56:53,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477573 conditions, 138937 events. 106025/138937 cut-off events. For 359416/359416 co-relation queries the response was YES. Maximal size of possible extension queue 2538. Compared 774960 event pairs, 15822 based on Foata normal form. 485/131846 useless extension candidates. Maximal degree in co-relation 477536. Up to 63163 conditions per place. [2023-08-25 19:56:53,623 INFO L140 encePairwiseOnDemand]: 912/921 looper letters, 363 selfloop transitions, 142 changer transitions 1/506 dead transitions. [2023-08-25 19:56:53,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 506 transitions, 4346 flow [2023-08-25 19:56:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 19:56:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 19:56:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3513 transitions. [2023-08-25 19:56:53,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29341017288900023 [2023-08-25 19:56:53,630 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3513 transitions. [2023-08-25 19:56:53,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3513 transitions. [2023-08-25 19:56:53,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:53,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3513 transitions. [2023-08-25 19:56:53,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 270.2307692307692) internal successors, (3513), 13 states have internal predecessors, (3513), 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 19:56:53,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 921.0) internal successors, (12894), 14 states have internal predecessors, (12894), 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 19:56:53,648 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 921.0) internal successors, (12894), 14 states have internal predecessors, (12894), 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 19:56:53,648 INFO L175 Difference]: Start difference. First operand has 144 places, 279 transitions, 2117 flow. Second operand 13 states and 3513 transitions. [2023-08-25 19:56:53,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 506 transitions, 4346 flow [2023-08-25 19:57:07,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 506 transitions, 4272 flow, removed 36 selfloop flow, removed 1 redundant places. [2023-08-25 19:57:07,251 INFO L231 Difference]: Finished difference. Result has 158 places, 326 transitions, 2818 flow [2023-08-25 19:57:07,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2818, PETRI_PLACES=158, PETRI_TRANSITIONS=326} [2023-08-25 19:57:07,252 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, -1 predicate places. [2023-08-25 19:57:07,252 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 326 transitions, 2818 flow [2023-08-25 19:57:07,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 259.2083333333333) internal successors, (6221), 24 states have internal predecessors, (6221), 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 19:57:07,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:07,253 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] [2023-08-25 19:57:07,265 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 19:57:07,459 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,SelfDestructingSolverStorable10 [2023-08-25 19:57:07,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:57:07,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:07,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1923552289, now seen corresponding path program 3 times [2023-08-25 19:57:07,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420421336] [2023-08-25 19:57:07,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:07,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420421336] [2023-08-25 19:57:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420421336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283755247] [2023-08-25 19:57:07,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:57:07,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:07,716 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 19:57:07,720 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 19:57:09,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 19:57:09,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:57:09,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 19:57:09,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:57:09,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:57:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283755247] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:09,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2023-08-25 19:57:09,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441462702] [2023-08-25 19:57:09,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:09,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:57:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:57:09,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-25 19:57:09,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 921 [2023-08-25 19:57:09,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 326 transitions, 2818 flow. Second operand has 8 states, 8 states have (on average 320.5) internal successors, (2564), 8 states have internal predecessors, (2564), 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 19:57:09,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:09,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 921 [2023-08-25 19:57:09,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:30,050 INFO L124 PetriNetUnfolderBase]: 95253/150962 cut-off events. [2023-08-25 19:57:30,050 INFO L125 PetriNetUnfolderBase]: For 433411/439562 co-relation queries the response was YES. [2023-08-25 19:57:31,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501956 conditions, 150962 events. 95253/150962 cut-off events. For 433411/439562 co-relation queries the response was YES. Maximal size of possible extension queue 3989. Compared 1304588 event pairs, 16786 based on Foata normal form. 1582/143779 useless extension candidates. Maximal degree in co-relation 501915. Up to 41650 conditions per place. [2023-08-25 19:57:31,962 INFO L140 encePairwiseOnDemand]: 915/921 looper letters, 695 selfloop transitions, 169 changer transitions 0/880 dead transitions. [2023-08-25 19:57:31,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 880 transitions, 9099 flow [2023-08-25 19:57:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:57:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:57:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3650 transitions. [2023-08-25 19:57:31,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36028032770703783 [2023-08-25 19:57:31,967 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3650 transitions. [2023-08-25 19:57:31,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3650 transitions. [2023-08-25 19:57:31,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:31,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3650 transitions. [2023-08-25 19:57:31,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 331.8181818181818) internal successors, (3650), 11 states have internal predecessors, (3650), 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 19:57:31,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 921.0) internal successors, (11052), 12 states have internal predecessors, (11052), 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 19:57:31,983 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 921.0) internal successors, (11052), 12 states have internal predecessors, (11052), 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 19:57:31,983 INFO L175 Difference]: Start difference. First operand has 158 places, 326 transitions, 2818 flow. Second operand 11 states and 3650 transitions. [2023-08-25 19:57:31,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 880 transitions, 9099 flow [2023-08-25 19:57:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 880 transitions, 8966 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-25 19:57:49,300 INFO L231 Difference]: Finished difference. Result has 168 places, 445 transitions, 4845 flow [2023-08-25 19:57:49,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4845, PETRI_PLACES=168, PETRI_TRANSITIONS=445} [2023-08-25 19:57:49,301 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2023-08-25 19:57:49,301 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 445 transitions, 4845 flow [2023-08-25 19:57:49,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 320.5) internal successors, (2564), 8 states have internal predecessors, (2564), 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 19:57:49,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:49,302 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, 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 19:57:49,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 19:57:49,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:49,509 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:57:49,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1311159788, now seen corresponding path program 1 times [2023-08-25 19:57:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873773722] [2023-08-25 19:57:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:49,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:49,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873773722] [2023-08-25 19:57:49,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873773722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:57:49,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:57:49,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:57:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695514482] [2023-08-25 19:57:49,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:57:49,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:57:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:57:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:57:49,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 921 [2023-08-25 19:57:49,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 445 transitions, 4845 flow. Second operand has 3 states, 3 states have (on average 363.3333333333333) internal successors, (1090), 3 states have internal predecessors, (1090), 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 19:57:49,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:49,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 921 [2023-08-25 19:57:49,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:58:16,922 INFO L124 PetriNetUnfolderBase]: 121419/187253 cut-off events. [2023-08-25 19:58:16,922 INFO L125 PetriNetUnfolderBase]: For 818411/827285 co-relation queries the response was YES. [2023-08-25 19:58:18,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669696 conditions, 187253 events. 121419/187253 cut-off events. For 818411/827285 co-relation queries the response was YES. Maximal size of possible extension queue 5183. Compared 1603574 event pairs, 37128 based on Foata normal form. 5919/177947 useless extension candidates. Maximal degree in co-relation 669652. Up to 102991 conditions per place. [2023-08-25 19:58:19,482 INFO L140 encePairwiseOnDemand]: 918/921 looper letters, 726 selfloop transitions, 7 changer transitions 0/749 dead transitions. [2023-08-25 19:58:19,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 749 transitions, 10107 flow [2023-08-25 19:58:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:58:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:58:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1119 transitions. [2023-08-25 19:58:19,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40499457111834963 [2023-08-25 19:58:19,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1119 transitions. [2023-08-25 19:58:19,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1119 transitions. [2023-08-25 19:58:19,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:58:19,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1119 transitions. [2023-08-25 19:58:19,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 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 19:58:19,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 921.0) internal successors, (3684), 4 states have internal predecessors, (3684), 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 19:58:19,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 921.0) internal successors, (3684), 4 states have internal predecessors, (3684), 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 19:58:19,489 INFO L175 Difference]: Start difference. First operand has 168 places, 445 transitions, 4845 flow. Second operand 3 states and 1119 transitions. [2023-08-25 19:58:19,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 749 transitions, 10107 flow [2023-08-25 19:58:41,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 749 transitions, 10099 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 19:58:41,244 INFO L231 Difference]: Finished difference. Result has 168 places, 446 transitions, 4954 flow [2023-08-25 19:58:41,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4954, PETRI_PLACES=168, PETRI_TRANSITIONS=446} [2023-08-25 19:58:41,245 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2023-08-25 19:58:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 446 transitions, 4954 flow [2023-08-25 19:58:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 363.3333333333333) internal successors, (1090), 3 states have internal predecessors, (1090), 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 19:58:41,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:58:41,246 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:58:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 19:58:41,246 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:58:41,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:58:41,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2144284136, now seen corresponding path program 4 times [2023-08-25 19:58:41,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:58:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002604408] [2023-08-25 19:58:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:58:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:58:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:58:41,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:58:41,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002604408] [2023-08-25 19:58:41,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002604408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:58:41,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653387505] [2023-08-25 19:58:41,453 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:58:41,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:58:41,461 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 19:58:41,468 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 19:58:41,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:58:41,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:58:41,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 19:58:41,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:58:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:58:41,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:58:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:58:41,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653387505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:58:41,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:58:41,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 19:58:41,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979632672] [2023-08-25 19:58:41,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:58:41,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:58:41,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:58:41,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:58:41,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-25 19:58:41,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 921 [2023-08-25 19:58:41,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 446 transitions, 4954 flow. Second operand has 11 states, 11 states have (on average 320.27272727272725) internal successors, (3523), 11 states have internal predecessors, (3523), 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 19:58:41,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:58:41,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 921 [2023-08-25 19:58:41,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:59:03,940 INFO L124 PetriNetUnfolderBase]: 92077/152271 cut-off events. [2023-08-25 19:59:03,941 INFO L125 PetriNetUnfolderBase]: For 561338/569120 co-relation queries the response was YES. [2023-08-25 19:59:05,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538465 conditions, 152271 events. 92077/152271 cut-off events. For 561338/569120 co-relation queries the response was YES. Maximal size of possible extension queue 3972. Compared 1394190 event pairs, 51780 based on Foata normal form. 712/151056 useless extension candidates. Maximal degree in co-relation 538419. Up to 109207 conditions per place. [2023-08-25 19:59:05,761 INFO L140 encePairwiseOnDemand]: 917/921 looper letters, 452 selfloop transitions, 11 changer transitions 0/479 dead transitions. [2023-08-25 19:59:05,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 479 transitions, 5769 flow [2023-08-25 19:59:05,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:59:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:59:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1981 transitions. [2023-08-25 19:59:05,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35848715164676076 [2023-08-25 19:59:05,765 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1981 transitions. [2023-08-25 19:59:05,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1981 transitions. [2023-08-25 19:59:05,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:59:05,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1981 transitions. [2023-08-25 19:59:05,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 330.1666666666667) internal successors, (1981), 6 states have internal predecessors, (1981), 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 19:59:05,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:59:05,775 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 921.0) internal successors, (6447), 7 states have internal predecessors, (6447), 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 19:59:05,775 INFO L175 Difference]: Start difference. First operand has 168 places, 446 transitions, 4954 flow. Second operand 6 states and 1981 transitions. [2023-08-25 19:59:05,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 479 transitions, 5769 flow [2023-08-25 19:59:23,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 479 transitions, 5758 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 19:59:23,965 INFO L231 Difference]: Finished difference. Result has 171 places, 398 transitions, 4316 flow [2023-08-25 19:59:23,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4316, PETRI_PLACES=171, PETRI_TRANSITIONS=398} [2023-08-25 19:59:23,966 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, 12 predicate places. [2023-08-25 19:59:23,966 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 398 transitions, 4316 flow [2023-08-25 19:59:23,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 320.27272727272725) internal successors, (3523), 11 states have internal predecessors, (3523), 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 19:59:23,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:59:23,967 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, 1, 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 19:59:23,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 19:59:24,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:59:24,179 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 19:59:24,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:59:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1366763297, now seen corresponding path program 1 times [2023-08-25 19:59:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:59:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761471070] [2023-08-25 19:59:24,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:59:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:59:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:59:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 19:59:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:59:24,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761471070] [2023-08-25 19:59:24,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761471070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:59:24,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:59:24,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 19:59:24,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085510491] [2023-08-25 19:59:24,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:59:24,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 19:59:24,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:59:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 19:59:24,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 19:59:24,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 921 [2023-08-25 19:59:24,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 398 transitions, 4316 flow. Second operand has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 19:59:24,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:59:24,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 921 [2023-08-25 19:59:24,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:59:46,977 INFO L124 PetriNetUnfolderBase]: 89477/152072 cut-off events. [2023-08-25 19:59:46,977 INFO L125 PetriNetUnfolderBase]: For 554703/561057 co-relation queries the response was YES. [2023-08-25 19:59:48,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532037 conditions, 152072 events. 89477/152072 cut-off events. For 554703/561057 co-relation queries the response was YES. Maximal size of possible extension queue 4314. Compared 1447238 event pairs, 58256 based on Foata normal form. 4210/154440 useless extension candidates. Maximal degree in co-relation 531991. Up to 78465 conditions per place. [2023-08-25 19:59:48,755 INFO L140 encePairwiseOnDemand]: 917/921 looper letters, 464 selfloop transitions, 11 changer transitions 35/526 dead transitions. [2023-08-25 19:59:48,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 526 transitions, 6697 flow [2023-08-25 19:59:48,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 19:59:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 19:59:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1340 transitions. [2023-08-25 19:59:48,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36373507057546145 [2023-08-25 19:59:48,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1340 transitions. [2023-08-25 19:59:48,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1340 transitions. [2023-08-25 19:59:48,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:59:48,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1340 transitions. [2023-08-25 19:59:48,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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 19:59:48,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 921.0) internal successors, (4605), 5 states have internal predecessors, (4605), 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 19:59:48,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 921.0) internal successors, (4605), 5 states have internal predecessors, (4605), 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 19:59:48,764 INFO L175 Difference]: Start difference. First operand has 171 places, 398 transitions, 4316 flow. Second operand 4 states and 1340 transitions. [2023-08-25 19:59:48,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 526 transitions, 6697 flow [2023-08-25 20:00:05,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 526 transitions, 6682 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:00:05,518 INFO L231 Difference]: Finished difference. Result has 172 places, 362 transitions, 3890 flow [2023-08-25 20:00:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3890, PETRI_PLACES=172, PETRI_TRANSITIONS=362} [2023-08-25 20:00:05,519 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2023-08-25 20:00:05,519 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 362 transitions, 3890 flow [2023-08-25 20:00:05,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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 20:00:05,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:00:05,519 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, 1, 1, 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 20:00:05,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 20:00:05,520 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 20:00:05,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:00:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash 430012529, now seen corresponding path program 1 times [2023-08-25 20:00:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:00:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919775948] [2023-08-25 20:00:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:00:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:00:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:00:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:00:06,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:00:06,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919775948] [2023-08-25 20:00:06,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919775948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:00:06,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255806362] [2023-08-25 20:00:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:00:06,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:00:06,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:00:06,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:00:06,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 20:00:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:00:06,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 20:00:06,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:00:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 20:00:06,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:00:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:00:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255806362] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:00:06,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:00:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 22 [2023-08-25 20:00:06,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151355638] [2023-08-25 20:00:06,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:00:06,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 20:00:06,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:00:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 20:00:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-08-25 20:00:06,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 921 [2023-08-25 20:00:06,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 362 transitions, 3890 flow. Second operand has 23 states, 23 states have (on average 346.5652173913044) internal successors, (7971), 23 states have internal predecessors, (7971), 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 20:00:06,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:00:06,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 921 [2023-08-25 20:00:06,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:01:10,357 INFO L124 PetriNetUnfolderBase]: 226479/373122 cut-off events. [2023-08-25 20:01:10,358 INFO L125 PetriNetUnfolderBase]: For 1457774/1464426 co-relation queries the response was YES. [2023-08-25 20:01:14,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337751 conditions, 373122 events. 226479/373122 cut-off events. For 1457774/1464426 co-relation queries the response was YES. Maximal size of possible extension queue 10619. Compared 3801965 event pairs, 18608 based on Foata normal form. 7437/378129 useless extension candidates. Maximal degree in co-relation 1337703. Up to 42808 conditions per place. [2023-08-25 20:01:15,701 INFO L140 encePairwiseOnDemand]: 907/921 looper letters, 1752 selfloop transitions, 1203 changer transitions 491/3462 dead transitions. [2023-08-25 20:01:15,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 3462 transitions, 37364 flow [2023-08-25 20:01:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-08-25 20:01:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-08-25 20:01:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 36425 transitions. [2023-08-25 20:01:15,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38773924336292603 [2023-08-25 20:01:15,726 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 36425 transitions. [2023-08-25 20:01:15,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 36425 transitions. [2023-08-25 20:01:15,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:01:15,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 36425 transitions. [2023-08-25 20:01:15,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 357.1078431372549) internal successors, (36425), 102 states have internal predecessors, (36425), 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 20:01:15,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 921.0) internal successors, (94863), 103 states have internal predecessors, (94863), 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 20:01:15,861 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 921.0) internal successors, (94863), 103 states have internal predecessors, (94863), 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 20:01:15,862 INFO L175 Difference]: Start difference. First operand has 172 places, 362 transitions, 3890 flow. Second operand 102 states and 36425 transitions. [2023-08-25 20:01:15,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 3462 transitions, 37364 flow [2023-08-25 20:03:40,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 3462 transitions, 37354 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 20:03:40,312 INFO L231 Difference]: Finished difference. Result has 329 places, 1464 transitions, 20078 flow [2023-08-25 20:03:40,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=921, PETRI_DIFFERENCE_MINUEND_FLOW=3880, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=20078, PETRI_PLACES=329, PETRI_TRANSITIONS=1464} [2023-08-25 20:03:40,313 INFO L281 CegarLoopForPetriNet]: 159 programPoint places, 170 predicate places. [2023-08-25 20:03:40,313 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 1464 transitions, 20078 flow [2023-08-25 20:03:40,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 346.5652173913044) internal successors, (7971), 23 states have internal predecessors, (7971), 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 20:03:40,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:03:40,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:03:40,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 20:03:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 20:03:40,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 20:03:40,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:03:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash 923615398, now seen corresponding path program 5 times [2023-08-25 20:03:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:03:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954628907] [2023-08-25 20:03:40,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:03:40,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:03:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:03:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:03:42,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:03:42,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954628907] [2023-08-25 20:03:42,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954628907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:03:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212647854] [2023-08-25 20:03:42,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:03:42,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:03:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:03:42,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:03:42,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 20:03:43,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 20:03:43,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:03:43,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-25 20:03:43,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:03:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:03:43,306 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 19 treesize of output 21 [2023-08-25 20:03:43,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:03:43,368 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 19 treesize of output 21 [2023-08-25 20:03:43,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:03:43,422 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 19 treesize of output 21 [2023-08-25 20:03:43,705 INFO L322 Elim1Store]: treesize reduction 30, result has 18.9 percent of original size [2023-08-25 20:03:43,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 18 [2023-08-25 20:03:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:03:43,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:03:44,299 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (forall ((v_ArrVal_1722 (Array Int Int)) (~q1_front~0 Int) (v_ArrVal_1721 (Array Int Int)) (v_ArrVal_1720 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1720) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1721) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1722) c_~q1~0.base))) (or (< ~q1_front~0 0) (< c_~q1_back~0 (+ ~q1_front~0 1)) (< 0 (let ((.cse1 (* ~q1_front~0 4))) (+ (select .cse0 (+ c_~q1~0.offset .cse1 4)) (select .cse0 (+ c_~q1~0.offset .cse1)) c_~total~0))) (< (select .cse0 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) c_~C~0))))) is different from false [2023-08-25 20:03:44,354 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-25 20:03:44,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3174 treesize of output 2984 [2023-08-25 20:03:44,379 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 20:03:44,388 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:03:44,388 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 155 [2023-08-25 20:03:44,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 20:03:44,413 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:03:44,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 115 [2023-08-25 20:03:44,436 INFO L322 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-08-25 20:03:44,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 185 treesize of output 113 [2023-08-25 20:03:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:03:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212647854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:03:45,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:03:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 33 [2023-08-25 20:03:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350500642] [2023-08-25 20:03:45,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:03:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 20:03:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:03:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 20:03:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1007, Unknown=6, NotChecked=64, Total=1190 [2023-08-25 20:03:45,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 921 [2023-08-25 20:03:45,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 1464 transitions, 20078 flow. Second operand has 35 states, 35 states have (on average 266.54285714285714) internal successors, (9329), 35 states have internal predecessors, (9329), 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 20:03:45,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:03:45,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 921 [2023-08-25 20:03:45,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:04:47,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]