/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:41:38,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:41:38,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 10:41:38,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:41:38,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:41:38,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:41:38,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:41:38,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:41:38,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:41:38,317 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:41:38,317 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:41:38,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:41:38,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:41:38,318 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:41:38,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:41:38,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:41:38,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:41:38,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:41:38,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:41:38,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:41:38,320 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:41:38,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:41:38,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:41:38,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:41:38,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:41:38,321 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:41:38,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:41:38,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:41:38,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:41:38,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:41:38,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:41:38,323 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:41:38,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:41:38,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:41:38,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:41:38,324 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:41:38,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:41:38,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:41:38,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:41:38,649 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:41:38,649 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:41:38,650 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-26 10:41:39,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:41:40,039 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:41:40,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-26 10:41:40,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983dfe5af/74bb79ba3171480192cb2f31bd06d0eb/FLAG19bbb7dcb [2023-08-26 10:41:40,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983dfe5af/74bb79ba3171480192cb2f31bd06d0eb [2023-08-26 10:41:40,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:41:40,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:41:40,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:41:40,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:41:40,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:41:40,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a5f89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40, skipping insertion in model container [2023-08-26 10:41:40,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,105 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:41:40,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:41:40,323 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:41:40,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:41:40,381 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:41:40,381 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:41:40,387 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:41:40,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40 WrapperNode [2023-08-26 10:41:40,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:41:40,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:41:40,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:41:40,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:41:40,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,449 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 491 [2023-08-26 10:41:40,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:41:40,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:41:40,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:41:40,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:41:40,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:41:40,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:41:40,489 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:41:40,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:41:40,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (1/1) ... [2023-08-26 10:41:40,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:41:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:40,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 10:41:40,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 10:41:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:41:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:41:40,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:41:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:41:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:41:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:41:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:41:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:41:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 10:41:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 10:41:40,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:41:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 10:41:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 10:41:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 10:41:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:41:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:41:40,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:41:40,560 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 10:41:40,667 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:41:40,668 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:41:41,299 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:41:41,665 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:41:41,665 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-26 10:41:41,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:41 BoogieIcfgContainer [2023-08-26 10:41:41,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:41:41,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:41:41,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:41:41,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:41:41,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:41:40" (1/3) ... [2023-08-26 10:41:41,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b9fe67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:41, skipping insertion in model container [2023-08-26 10:41:41,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:40" (2/3) ... [2023-08-26 10:41:41,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b9fe67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:41, skipping insertion in model container [2023-08-26 10:41:41,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:41" (3/3) ... [2023-08-26 10:41:41,676 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-08-26 10:41:41,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:41:41,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2023-08-26 10:41:41,691 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:41:41,822 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 10:41:41,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 368 transitions, 760 flow [2023-08-26 10:41:42,006 INFO L124 PetriNetUnfolderBase]: 18/365 cut-off events. [2023-08-26 10:41:42,006 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 10:41:42,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 365 events. 18/365 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 529 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 286. Up to 3 conditions per place. [2023-08-26 10:41:42,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 368 transitions, 760 flow [2023-08-26 10:41:42,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 354 transitions, 726 flow [2023-08-26 10:41:42,030 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:41:42,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 354 transitions, 726 flow [2023-08-26 10:41:42,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 354 transitions, 726 flow [2023-08-26 10:41:42,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 354 transitions, 726 flow [2023-08-26 10:41:42,098 INFO L124 PetriNetUnfolderBase]: 18/354 cut-off events. [2023-08-26 10:41:42,098 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 10:41:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 18/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 525 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 286. Up to 3 conditions per place. [2023-08-26 10:41:42,105 INFO L119 LiptonReduction]: Number of co-enabled transitions 10692 [2023-08-26 10:41:54,258 INFO L134 LiptonReduction]: Checked pairs total: 38557 [2023-08-26 10:41:54,258 INFO L136 LiptonReduction]: Total number of compositions: 391 [2023-08-26 10:41:54,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:41:54,273 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;@5cfc87dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:41:54,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 123 error locations. [2023-08-26 10:41:54,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:41:54,275 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:41:54,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:41:54,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:54,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:41:54,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:54,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:54,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2023-08-26 10:41:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:54,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077792403] [2023-08-26 10:41:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:54,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077792403] [2023-08-26 10:41:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077792403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:54,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:54,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:41:54,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160200923] [2023-08-26 10:41:54,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:41:54,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:41:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:41:54,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 759 [2023-08-26 10:41:54,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:54,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:54,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 759 [2023-08-26 10:41:54,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:54,567 INFO L124 PetriNetUnfolderBase]: 324/656 cut-off events. [2023-08-26 10:41:54,568 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-26 10:41:54,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 656 events. 324/656 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2972 event pairs, 167 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 859. Up to 453 conditions per place. [2023-08-26 10:41:54,574 INFO L140 encePairwiseOnDemand]: 691/759 looper letters, 24 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2023-08-26 10:41:54,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 150 flow [2023-08-26 10:41:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:41:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:41:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 690 transitions. [2023-08-26 10:41:54,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-26 10:41:54,592 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 690 transitions. [2023-08-26 10:41:54,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 690 transitions. [2023-08-26 10:41:54,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:54,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 690 transitions. [2023-08-26 10:41:54,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:54,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 759.0) internal successors, (2277), 3 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:54,609 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 759.0) internal successors, (2277), 3 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:54,610 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 238 flow. Second operand 2 states and 690 transitions. [2023-08-26 10:41:54,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 150 flow [2023-08-26 10:41:54,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 10:41:54,615 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 90 flow [2023-08-26 10:41:54,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-08-26 10:41:54,620 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -72 predicate places. [2023-08-26 10:41:54,620 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 90 flow [2023-08-26 10:41:54,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:54,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:54,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:54,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:41:54,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:54,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:54,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1501596184, now seen corresponding path program 1 times [2023-08-26 10:41:54,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:54,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281852978] [2023-08-26 10:41:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:54,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:55,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:55,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281852978] [2023-08-26 10:41:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281852978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:55,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:55,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077844022] [2023-08-26 10:41:55,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:41:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:41:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:41:55,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 759 [2023-08-26 10:41:55,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:55,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:55,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 759 [2023-08-26 10:41:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:55,723 INFO L124 PetriNetUnfolderBase]: 1012/1368 cut-off events. [2023-08-26 10:41:55,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:41:55,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 1368 events. 1012/1368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4733 event pairs, 60 based on Foata normal form. 0/900 useless extension candidates. Maximal degree in co-relation 2743. Up to 667 conditions per place. [2023-08-26 10:41:55,730 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 62 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-26 10:41:55,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 276 flow [2023-08-26 10:41:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1645 transitions. [2023-08-26 10:41:55,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36122090469916557 [2023-08-26 10:41:55,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1645 transitions. [2023-08-26 10:41:55,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1645 transitions. [2023-08-26 10:41:55,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:55,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1645 transitions. [2023-08-26 10:41:55,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.1666666666667) internal successors, (1645), 6 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:55,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:55,749 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:55,749 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 90 flow. Second operand 6 states and 1645 transitions. [2023-08-26 10:41:55,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 276 flow [2023-08-26 10:41:55,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:41:55,750 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 96 flow [2023-08-26 10:41:55,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-26 10:41:55,751 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -68 predicate places. [2023-08-26 10:41:55,752 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 96 flow [2023-08-26 10:41:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:55,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:55,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:41:55,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:55,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1528549441, now seen corresponding path program 1 times [2023-08-26 10:41:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:55,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44843002] [2023-08-26 10:41:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:41:55,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44843002] [2023-08-26 10:41:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44843002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:55,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:41:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176316198] [2023-08-26 10:41:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:55,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:41:55,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:41:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:41:55,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 759 [2023-08-26 10:41:55,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:55,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:55,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 759 [2023-08-26 10:41:55,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:56,005 INFO L124 PetriNetUnfolderBase]: 326/657 cut-off events. [2023-08-26 10:41:56,005 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 10:41:56,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 657 events. 326/657 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2838 event pairs, 167 based on Foata normal form. 15/496 useless extension candidates. Maximal degree in co-relation 1251. Up to 449 conditions per place. [2023-08-26 10:41:56,008 INFO L140 encePairwiseOnDemand]: 753/759 looper letters, 23 selfloop transitions, 2 changer transitions 11/53 dead transitions. [2023-08-26 10:41:56,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 197 flow [2023-08-26 10:41:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:41:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:41:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2023-08-26 10:41:56,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3554018445322793 [2023-08-26 10:41:56,012 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2023-08-26 10:41:56,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2023-08-26 10:41:56,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:56,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2023-08-26 10:41:56,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,021 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 96 flow. Second operand 4 states and 1079 transitions. [2023-08-26 10:41:56,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 197 flow [2023-08-26 10:41:56,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:56,024 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 107 flow [2023-08-26 10:41:56,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-26 10:41:56,025 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -67 predicate places. [2023-08-26 10:41:56,025 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 107 flow [2023-08-26 10:41:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:56,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:56,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:41:56,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:56,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -946383144, now seen corresponding path program 1 times [2023-08-26 10:41:56,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:56,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033066104] [2023-08-26 10:41:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:56,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:56,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033066104] [2023-08-26 10:41:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033066104] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127646111] [2023-08-26 10:41:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:56,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:41:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:41:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:41:56,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 759 [2023-08-26 10:41:56,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:56,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 759 [2023-08-26 10:41:56,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:56,854 INFO L124 PetriNetUnfolderBase]: 984/1329 cut-off events. [2023-08-26 10:41:56,855 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2023-08-26 10:41:56,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1329 events. 984/1329 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4564 event pairs, 446 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 3173. Up to 1070 conditions per place. [2023-08-26 10:41:56,862 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 54 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-26 10:41:56,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 269 flow [2023-08-26 10:41:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1636 transitions. [2023-08-26 10:41:56,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35924462011418534 [2023-08-26 10:41:56,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1636 transitions. [2023-08-26 10:41:56,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1636 transitions. [2023-08-26 10:41:56,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:56,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1636 transitions. [2023-08-26 10:41:56,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,880 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 107 flow. Second operand 6 states and 1636 transitions. [2023-08-26 10:41:56,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 269 flow [2023-08-26 10:41:56,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 265 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 10:41:56,882 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 109 flow [2023-08-26 10:41:56,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-26 10:41:56,883 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -65 predicate places. [2023-08-26 10:41:56,883 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 109 flow [2023-08-26 10:41:56,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:56,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:56,885 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] [2023-08-26 10:41:56,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 10:41:56,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:56,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1572493821, now seen corresponding path program 1 times [2023-08-26 10:41:56,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:56,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386286458] [2023-08-26 10:41:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:57,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:57,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386286458] [2023-08-26 10:41:57,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386286458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:57,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:41:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163054962] [2023-08-26 10:41:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:41:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:41:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:41:57,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 759 [2023-08-26 10:41:57,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:57,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 759 [2023-08-26 10:41:57,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:57,219 INFO L124 PetriNetUnfolderBase]: 368/741 cut-off events. [2023-08-26 10:41:57,220 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2023-08-26 10:41:57,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 741 events. 368/741 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3441 event pairs, 194 based on Foata normal form. 24/585 useless extension candidates. Maximal degree in co-relation 1615. Up to 450 conditions per place. [2023-08-26 10:41:57,223 INFO L140 encePairwiseOnDemand]: 752/759 looper letters, 24 selfloop transitions, 2 changer transitions 12/54 dead transitions. [2023-08-26 10:41:57,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 223 flow [2023-08-26 10:41:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:41:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:41:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1081 transitions. [2023-08-26 10:41:57,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2023-08-26 10:41:57,226 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1081 transitions. [2023-08-26 10:41:57,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1081 transitions. [2023-08-26 10:41:57,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:57,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1081 transitions. [2023-08-26 10:41:57,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 270.25) internal successors, (1081), 4 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,233 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 109 flow. Second operand 4 states and 1081 transitions. [2023-08-26 10:41:57,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 223 flow [2023-08-26 10:41:57,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:57,235 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2023-08-26 10:41:57,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-26 10:41:57,236 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -64 predicate places. [2023-08-26 10:41:57,236 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2023-08-26 10:41:57,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:57,237 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] [2023-08-26 10:41:57,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 10:41:57,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:57,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1646170910, now seen corresponding path program 1 times [2023-08-26 10:41:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211002352] [2023-08-26 10:41:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:57,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:57,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:41:57,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211002352] [2023-08-26 10:41:57,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211002352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:57,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:57,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:57,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510117640] [2023-08-26 10:41:57,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:57,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:41:57,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:41:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:41:57,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 759 [2023-08-26 10:41:57,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:57,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 759 [2023-08-26 10:41:57,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:57,950 INFO L124 PetriNetUnfolderBase]: 980/1323 cut-off events. [2023-08-26 10:41:57,950 INFO L125 PetriNetUnfolderBase]: For 529/553 co-relation queries the response was YES. [2023-08-26 10:41:57,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1323 events. 980/1323 cut-off events. For 529/553 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4501 event pairs, 533 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 3722. Up to 1278 conditions per place. [2023-08-26 10:41:57,958 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 42 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-26 10:41:57,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 244 flow [2023-08-26 10:41:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1623 transitions. [2023-08-26 10:41:57,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563899868247694 [2023-08-26 10:41:57,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1623 transitions. [2023-08-26 10:41:57,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1623 transitions. [2023-08-26 10:41:57,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:57,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1623 transitions. [2023-08-26 10:41:57,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,977 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,977 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 6 states and 1623 transitions. [2023-08-26 10:41:57,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 244 flow [2023-08-26 10:41:57,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 240 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 10:41:57,980 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 124 flow [2023-08-26 10:41:57,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-26 10:41:57,983 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -62 predicate places. [2023-08-26 10:41:57,986 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 124 flow [2023-08-26 10:41:57,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:57,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:57,987 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] [2023-08-26 10:41:57,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 10:41:57,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:57,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash 311490001, now seen corresponding path program 1 times [2023-08-26 10:41:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:57,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189078603] [2023-08-26 10:41:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:41:58,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189078603] [2023-08-26 10:41:58,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189078603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:58,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:58,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:41:58,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524983444] [2023-08-26 10:41:58,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:58,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:41:58,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:58,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:41:58,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:41:58,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-26 10:41:58,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:58,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-26 10:41:58,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:58,253 INFO L124 PetriNetUnfolderBase]: 340/529 cut-off events. [2023-08-26 10:41:58,254 INFO L125 PetriNetUnfolderBase]: For 147/178 co-relation queries the response was YES. [2023-08-26 10:41:58,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 529 events. 340/529 cut-off events. For 147/178 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1709 event pairs, 48 based on Foata normal form. 11/362 useless extension candidates. Maximal degree in co-relation 1420. Up to 390 conditions per place. [2023-08-26 10:41:58,257 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 33 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-26 10:41:58,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 228 flow [2023-08-26 10:41:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:41:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:41:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-26 10:41:58,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4044795783926219 [2023-08-26 10:41:58,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-26 10:41:58,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-26 10:41:58,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:58,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-26 10:41:58,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,267 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 124 flow. Second operand 3 states and 921 transitions. [2023-08-26 10:41:58,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 228 flow [2023-08-26 10:41:58,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:41:58,269 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 142 flow [2023-08-26 10:41:58,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-26 10:41:58,270 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -63 predicate places. [2023-08-26 10:41:58,270 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 142 flow [2023-08-26 10:41:58,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:58,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:41:58,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 10:41:58,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:58,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:58,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1178469717, now seen corresponding path program 2 times [2023-08-26 10:41:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:58,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132421546] [2023-08-26 10:41:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:58,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:41:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132421546] [2023-08-26 10:41:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132421546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:58,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:58,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:41:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076110149] [2023-08-26 10:41:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:58,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:41:58,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:58,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:41:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 10:41:58,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 759 [2023-08-26 10:41:58,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 290.14285714285717) internal successors, (2031), 7 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:58,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 759 [2023-08-26 10:41:58,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:58,916 INFO L124 PetriNetUnfolderBase]: 499/897 cut-off events. [2023-08-26 10:41:58,916 INFO L125 PetriNetUnfolderBase]: For 417/524 co-relation queries the response was YES. [2023-08-26 10:41:58,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 897 events. 499/897 cut-off events. For 417/524 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3922 event pairs, 125 based on Foata normal form. 12/680 useless extension candidates. Maximal degree in co-relation 2575. Up to 302 conditions per place. [2023-08-26 10:41:58,922 INFO L140 encePairwiseOnDemand]: 752/759 looper letters, 65 selfloop transitions, 8 changer transitions 2/89 dead transitions. [2023-08-26 10:41:58,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 476 flow [2023-08-26 10:41:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1790 transitions. [2023-08-26 10:41:58,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930610452349583 [2023-08-26 10:41:58,927 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1790 transitions. [2023-08-26 10:41:58,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1790 transitions. [2023-08-26 10:41:58,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:58,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1790 transitions. [2023-08-26 10:41:58,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,936 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,936 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 142 flow. Second operand 6 states and 1790 transitions. [2023-08-26 10:41:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 476 flow [2023-08-26 10:41:58,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 425 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-26 10:41:58,939 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 185 flow [2023-08-26 10:41:58,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-26 10:41:58,940 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -57 predicate places. [2023-08-26 10:41:58,940 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 185 flow [2023-08-26 10:41:58,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 290.14285714285717) internal successors, (2031), 7 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:58,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:58,941 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] [2023-08-26 10:41:58,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 10:41:58,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:58,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2139107826, now seen corresponding path program 1 times [2023-08-26 10:41:58,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:58,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923777532] [2023-08-26 10:41:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:41:59,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:59,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923777532] [2023-08-26 10:41:59,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923777532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:41:59,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:41:59,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:41:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997184594] [2023-08-26 10:41:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:41:59,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:41:59,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:41:59,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:41:59,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-26 10:41:59,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:59,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-26 10:41:59,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:59,149 INFO L124 PetriNetUnfolderBase]: 328/627 cut-off events. [2023-08-26 10:41:59,149 INFO L125 PetriNetUnfolderBase]: For 334/347 co-relation queries the response was YES. [2023-08-26 10:41:59,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 627 events. 328/627 cut-off events. For 334/347 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2520 event pairs, 92 based on Foata normal form. 9/538 useless extension candidates. Maximal degree in co-relation 1752. Up to 496 conditions per place. [2023-08-26 10:41:59,152 INFO L140 encePairwiseOnDemand]: 755/759 looper letters, 34 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-26 10:41:59,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 260 flow [2023-08-26 10:41:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:41:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:41:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-26 10:41:59,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40272288098375053 [2023-08-26 10:41:59,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-26 10:41:59,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-26 10:41:59,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:59,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-26 10:41:59,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,162 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 185 flow. Second operand 3 states and 917 transitions. [2023-08-26 10:41:59,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 260 flow [2023-08-26 10:41:59,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 248 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 10:41:59,164 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 173 flow [2023-08-26 10:41:59,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-08-26 10:41:59,164 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -56 predicate places. [2023-08-26 10:41:59,164 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 173 flow [2023-08-26 10:41:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:59,165 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] [2023-08-26 10:41:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 10:41:59,166 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:41:59,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:41:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1959147371, now seen corresponding path program 1 times [2023-08-26 10:41:59,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:41:59,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835244977] [2023-08-26 10:41:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:41:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:41:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835244977] [2023-08-26 10:41:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835244977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:41:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178236872] [2023-08-26 10:41:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:41:59,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:41:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:41:59,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:41:59,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 10:41:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:41:59,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:41:59,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:41:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:59,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:41:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:41:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178236872] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:41:59,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:41:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-26 10:41:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905705306] [2023-08-26 10:41:59,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:41:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 10:41:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:41:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 10:41:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-26 10:41:59,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 759 [2023-08-26 10:41:59,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 173 flow. Second operand has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:41:59,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 759 [2023-08-26 10:41:59,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:41:59,923 INFO L124 PetriNetUnfolderBase]: 507/1046 cut-off events. [2023-08-26 10:41:59,924 INFO L125 PetriNetUnfolderBase]: For 762/774 co-relation queries the response was YES. [2023-08-26 10:41:59,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1046 events. 507/1046 cut-off events. For 762/774 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5314 event pairs, 214 based on Foata normal form. 50/942 useless extension candidates. Maximal degree in co-relation 2894. Up to 508 conditions per place. [2023-08-26 10:41:59,930 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 58 selfloop transitions, 5 changer transitions 2/80 dead transitions. [2023-08-26 10:41:59,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 428 flow [2023-08-26 10:41:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:41:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:41:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1603 transitions. [2023-08-26 10:41:59,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519982433025911 [2023-08-26 10:41:59,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1603 transitions. [2023-08-26 10:41:59,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1603 transitions. [2023-08-26 10:41:59,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:41:59,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1603 transitions. [2023-08-26 10:41:59,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,943 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,943 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 173 flow. Second operand 6 states and 1603 transitions. [2023-08-26 10:41:59,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 428 flow [2023-08-26 10:41:59,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 10:41:59,946 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 212 flow [2023-08-26 10:41:59,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-08-26 10:41:59,947 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -50 predicate places. [2023-08-26 10:41:59,947 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 212 flow [2023-08-26 10:41:59,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:41:59,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:41:59,948 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] [2023-08-26 10:41:59,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:00,154 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 [2023-08-26 10:42:00,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:42:00,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1457213602, now seen corresponding path program 2 times [2023-08-26 10:42:00,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:00,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654978563] [2023-08-26 10:42:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:00,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654978563] [2023-08-26 10:42:00,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654978563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:00,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140828652] [2023-08-26 10:42:00,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:42:00,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:00,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:00,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 10:42:01,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:42:01,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:01,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:42:01,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:01,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:01,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:01,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140828652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:01,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:01,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-26 10:42:01,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257161365] [2023-08-26 10:42:01,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:01,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 10:42:01,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:01,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 10:42:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:42:01,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 759 [2023-08-26 10:42:01,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 212 flow. Second operand has 13 states, 13 states have (on average 258.53846153846155) internal successors, (3361), 13 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:01,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:01,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 759 [2023-08-26 10:42:01,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:01,765 INFO L124 PetriNetUnfolderBase]: 794/1503 cut-off events. [2023-08-26 10:42:01,765 INFO L125 PetriNetUnfolderBase]: For 1384/1447 co-relation queries the response was YES. [2023-08-26 10:42:01,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1503 events. 794/1503 cut-off events. For 1384/1447 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8072 event pairs, 132 based on Foata normal form. 95/1319 useless extension candidates. Maximal degree in co-relation 4551. Up to 591 conditions per place. [2023-08-26 10:42:01,774 INFO L140 encePairwiseOnDemand]: 751/759 looper letters, 73 selfloop transitions, 11 changer transitions 4/103 dead transitions. [2023-08-26 10:42:01,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 620 flow [2023-08-26 10:42:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:42:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:42:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2126 transitions. [2023-08-26 10:42:01,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35013175230566534 [2023-08-26 10:42:01,780 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2126 transitions. [2023-08-26 10:42:01,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2126 transitions. [2023-08-26 10:42:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:01,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2126 transitions. [2023-08-26 10:42:01,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 265.75) internal successors, (2126), 8 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:01,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:01,792 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:01,792 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 212 flow. Second operand 8 states and 2126 transitions. [2023-08-26 10:42:01,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 620 flow [2023-08-26 10:42:01,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 588 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-26 10:42:01,795 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 261 flow [2023-08-26 10:42:01,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-26 10:42:01,796 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -43 predicate places. [2023-08-26 10:42:01,796 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 261 flow [2023-08-26 10:42:01,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 258.53846153846155) internal successors, (3361), 13 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:01,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:01,797 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] [2023-08-26 10:42:01,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:02,007 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 [2023-08-26 10:42:02,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:42:02,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2035646904, now seen corresponding path program 2 times [2023-08-26 10:42:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:02,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381831429] [2023-08-26 10:42:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:02,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:02,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381831429] [2023-08-26 10:42:02,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381831429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:02,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714630911] [2023-08-26 10:42:02,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:42:02,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:02,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:02,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:03,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 10:42:03,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:42:03,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:03,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-26 10:42:03,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:03,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:03,781 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 [2023-08-26 10:42:03,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-26 10:42:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:03,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:04,005 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:04,005 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 45 treesize of output 37 [2023-08-26 10:42:04,013 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 24 treesize of output 18 [2023-08-26 10:42:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714630911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:04,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-26 10:42:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522637281] [2023-08-26 10:42:04,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:04,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 10:42:04,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 10:42:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=456, Unknown=5, NotChecked=0, Total=552 [2023-08-26 10:42:04,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 759 [2023-08-26 10:42:04,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 261 flow. Second operand has 24 states, 24 states have (on average 230.54166666666666) internal successors, (5533), 24 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:04,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:04,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 759 [2023-08-26 10:42:04,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:09,848 INFO L124 PetriNetUnfolderBase]: 6342/11467 cut-off events. [2023-08-26 10:42:09,848 INFO L125 PetriNetUnfolderBase]: For 16102/16923 co-relation queries the response was YES. [2023-08-26 10:42:09,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37384 conditions, 11467 events. 6342/11467 cut-off events. For 16102/16923 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 86654 event pairs, 579 based on Foata normal form. 111/10111 useless extension candidates. Maximal degree in co-relation 37367. Up to 3919 conditions per place. [2023-08-26 10:42:09,918 INFO L140 encePairwiseOnDemand]: 746/759 looper letters, 493 selfloop transitions, 115 changer transitions 1/619 dead transitions. [2023-08-26 10:42:09,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 619 transitions, 3852 flow [2023-08-26 10:42:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-26 10:42:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-26 10:42:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9418 transitions. [2023-08-26 10:42:09,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.318164926860579 [2023-08-26 10:42:09,940 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 9418 transitions. [2023-08-26 10:42:09,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 9418 transitions. [2023-08-26 10:42:09,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:09,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 9418 transitions. [2023-08-26 10:42:09,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 241.48717948717947) internal successors, (9418), 39 states have internal predecessors, (9418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:09,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 759.0) internal successors, (30360), 40 states have internal predecessors, (30360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:09,993 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 759.0) internal successors, (30360), 40 states have internal predecessors, (30360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:09,994 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 261 flow. Second operand 39 states and 9418 transitions. [2023-08-26 10:42:09,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 619 transitions, 3852 flow [2023-08-26 10:42:10,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 619 transitions, 3659 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-26 10:42:10,127 INFO L231 Difference]: Finished difference. Result has 128 places, 188 transitions, 1469 flow [2023-08-26 10:42:10,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1469, PETRI_PLACES=128, PETRI_TRANSITIONS=188} [2023-08-26 10:42:10,129 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2023-08-26 10:42:10,129 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 188 transitions, 1469 flow [2023-08-26 10:42:10,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 230.54166666666666) internal successors, (5533), 24 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:10,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:10,131 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] [2023-08-26 10:42:10,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:10,338 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 [2023-08-26 10:42:10,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:42:10,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:10,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2067262521, now seen corresponding path program 3 times [2023-08-26 10:42:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:10,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144586474] [2023-08-26 10:42:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:10,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:42:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144586474] [2023-08-26 10:42:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144586474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:42:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:42:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:42:10,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148355566] [2023-08-26 10:42:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:42:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:42:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:42:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:42:10,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-26 10:42:10,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 188 transitions, 1469 flow. Second operand has 5 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:10,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:10,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-26 10:42:10,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:12,631 INFO L124 PetriNetUnfolderBase]: 6897/15086 cut-off events. [2023-08-26 10:42:12,631 INFO L125 PetriNetUnfolderBase]: For 51952/52542 co-relation queries the response was YES. [2023-08-26 10:42:12,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56732 conditions, 15086 events. 6897/15086 cut-off events. For 51952/52542 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 141948 event pairs, 1254 based on Foata normal form. 524/14598 useless extension candidates. Maximal degree in co-relation 56693. Up to 5140 conditions per place. [2023-08-26 10:42:12,832 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 252 selfloop transitions, 56 changer transitions 0/329 dead transitions. [2023-08-26 10:42:12,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 329 transitions, 3246 flow [2023-08-26 10:42:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:42:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:42:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1236 transitions. [2023-08-26 10:42:12,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2023-08-26 10:42:12,835 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1236 transitions. [2023-08-26 10:42:12,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1236 transitions. [2023-08-26 10:42:12,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:12,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1236 transitions. [2023-08-26 10:42:12,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:12,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:12,841 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:12,841 INFO L175 Difference]: Start difference. First operand has 128 places, 188 transitions, 1469 flow. Second operand 4 states and 1236 transitions. [2023-08-26 10:42:12,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 329 transitions, 3246 flow [2023-08-26 10:42:13,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 329 transitions, 2566 flow, removed 335 selfloop flow, removed 5 redundant places. [2023-08-26 10:42:13,110 INFO L231 Difference]: Finished difference. Result has 128 places, 216 transitions, 1597 flow [2023-08-26 10:42:13,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1597, PETRI_PLACES=128, PETRI_TRANSITIONS=216} [2023-08-26 10:42:13,111 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2023-08-26 10:42:13,111 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 216 transitions, 1597 flow [2023-08-26 10:42:13,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:13,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:13,112 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] [2023-08-26 10:42:13,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 10:42:13,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:42:13,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1715853280, now seen corresponding path program 3 times [2023-08-26 10:42:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594573676] [2023-08-26 10:42:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:14,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594573676] [2023-08-26 10:42:14,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594573676] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:14,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915874560] [2023-08-26 10:42:14,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:42:14,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:14,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:14,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:14,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 10:42:15,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:42:15,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:15,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 10:42:15,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:15,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:15,694 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 [2023-08-26 10:42:15,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:15,787 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 [2023-08-26 10:42:15,851 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:42:15,853 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:15,853 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 21 treesize of output 10 [2023-08-26 10:42:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:15,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:42:16,093 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:42:16,093 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 167 treesize of output 151 [2023-08-26 10:42:16,101 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 64 treesize of output 58 [2023-08-26 10:42:16,113 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 58 treesize of output 46 [2023-08-26 10:42:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915874560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:42:16,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:42:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-26 10:42:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068715824] [2023-08-26 10:42:16,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:42:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 10:42:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 10:42:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-08-26 10:42:16,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 759 [2023-08-26 10:42:16,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 216 transitions, 1597 flow. Second operand has 28 states, 28 states have (on average 221.32142857142858) internal successors, (6197), 28 states have internal predecessors, (6197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:16,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:16,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 759 [2023-08-26 10:42:16,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:19,291 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] [2023-08-26 10:42:21,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 10:42:27,830 INFO L124 PetriNetUnfolderBase]: 21018/35265 cut-off events. [2023-08-26 10:42:27,830 INFO L125 PetriNetUnfolderBase]: For 192738/193843 co-relation queries the response was YES. [2023-08-26 10:42:27,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152927 conditions, 35265 events. 21018/35265 cut-off events. For 192738/193843 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 291811 event pairs, 3175 based on Foata normal form. 1203/33839 useless extension candidates. Maximal degree in co-relation 152888. Up to 12619 conditions per place. [2023-08-26 10:42:28,157 INFO L140 encePairwiseOnDemand]: 747/759 looper letters, 595 selfloop transitions, 314 changer transitions 0/915 dead transitions. [2023-08-26 10:42:28,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 915 transitions, 8823 flow [2023-08-26 10:42:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 10:42:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 10:42:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 6651 transitions. [2023-08-26 10:42:28,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3021670982690473 [2023-08-26 10:42:28,169 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 6651 transitions. [2023-08-26 10:42:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 6651 transitions. [2023-08-26 10:42:28,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:28,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 6651 transitions. [2023-08-26 10:42:28,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 229.3448275862069) internal successors, (6651), 29 states have internal predecessors, (6651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:28,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 759.0) internal successors, (22770), 30 states have internal predecessors, (22770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:28,199 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 759.0) internal successors, (22770), 30 states have internal predecessors, (22770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:28,199 INFO L175 Difference]: Start difference. First operand has 128 places, 216 transitions, 1597 flow. Second operand 29 states and 6651 transitions. [2023-08-26 10:42:28,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 915 transitions, 8823 flow [2023-08-26 10:42:29,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 915 transitions, 8593 flow, removed 115 selfloop flow, removed 0 redundant places. [2023-08-26 10:42:29,533 INFO L231 Difference]: Finished difference. Result has 172 places, 499 transitions, 4985 flow [2023-08-26 10:42:29,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4985, PETRI_PLACES=172, PETRI_TRANSITIONS=499} [2023-08-26 10:42:29,533 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 58 predicate places. [2023-08-26 10:42:29,533 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 499 transitions, 4985 flow [2023-08-26 10:42:29,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 221.32142857142858) internal successors, (6197), 28 states have internal predecessors, (6197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:29,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:29,535 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] [2023-08-26 10:42:29,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 10:42:29,743 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 [2023-08-26 10:42:29,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:42:29,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1318232646, now seen corresponding path program 4 times [2023-08-26 10:42:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132748578] [2023-08-26 10:42:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:42:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:30,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132748578] [2023-08-26 10:42:30,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132748578] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:30,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460452386] [2023-08-26 10:42:30,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:42:30,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:30,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:30,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:30,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 10:42:32,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:42:32,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:32,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-26 10:42:32,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:32,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:32,739 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 [2023-08-26 10:42:32,779 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:42:32,780 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 23 treesize of output 10 [2023-08-26 10:42:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:42:32,796 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:42:32,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460452386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:42:32,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:42:32,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2023-08-26 10:42:32,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012167065] [2023-08-26 10:42:32,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:42:32,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:42:32,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:32,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:42:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-08-26 10:42:32,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 759 [2023-08-26 10:42:32,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 499 transitions, 4985 flow. Second operand has 7 states, 7 states have (on average 254.85714285714286) internal successors, (1784), 7 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:32,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:32,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 759 [2023-08-26 10:42:32,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:39,808 INFO L124 PetriNetUnfolderBase]: 20109/37478 cut-off events. [2023-08-26 10:42:39,808 INFO L125 PetriNetUnfolderBase]: For 271727/273256 co-relation queries the response was YES. [2023-08-26 10:42:40,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177544 conditions, 37478 events. 20109/37478 cut-off events. For 271727/273256 co-relation queries the response was YES. Maximal size of possible extension queue 1809. Compared 353240 event pairs, 6008 based on Foata normal form. 872/37694 useless extension candidates. Maximal degree in co-relation 177489. Up to 25005 conditions per place. [2023-08-26 10:42:40,274 INFO L140 encePairwiseOnDemand]: 752/759 looper letters, 659 selfloop transitions, 112 changer transitions 0/781 dead transitions. [2023-08-26 10:42:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 781 transitions, 9563 flow [2023-08-26 10:42:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:42:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:42:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2086 transitions. [2023-08-26 10:42:40,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3435441370223979 [2023-08-26 10:42:40,279 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2086 transitions. [2023-08-26 10:42:40,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2086 transitions. [2023-08-26 10:42:40,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:40,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2086 transitions. [2023-08-26 10:42:40,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.75) internal successors, (2086), 8 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:40,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:40,293 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:40,293 INFO L175 Difference]: Start difference. First operand has 172 places, 499 transitions, 4985 flow. Second operand 8 states and 2086 transitions. [2023-08-26 10:42:40,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 781 transitions, 9563 flow [2023-08-26 10:42:43,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 781 transitions, 9424 flow, removed 54 selfloop flow, removed 9 redundant places. [2023-08-26 10:42:43,108 INFO L231 Difference]: Finished difference. Result has 174 places, 594 transitions, 6329 flow [2023-08-26 10:42:43,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=4880, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6329, PETRI_PLACES=174, PETRI_TRANSITIONS=594} [2023-08-26 10:42:43,109 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 60 predicate places. [2023-08-26 10:42:43,109 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 594 transitions, 6329 flow [2023-08-26 10:42:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 254.85714285714286) internal successors, (1784), 7 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:43,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:42:43,110 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] [2023-08-26 10:42:43,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 10:42:43,310 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,SelfDestructingSolverStorable14 [2023-08-26 10:42:43,310 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:42:43,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:42:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1533152700, now seen corresponding path program 5 times [2023-08-26 10:42:43,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:42:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961727800] [2023-08-26 10:42:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:42:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:42:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:42:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:42:45,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:42:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961727800] [2023-08-26 10:42:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961727800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:42:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432550333] [2023-08-26 10:42:45,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:42:45,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:42:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:42:45,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:42:45,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 10:42:46,321 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:42:46,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:42:46,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-26 10:42:46,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:42:46,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:46,474 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 [2023-08-26 10:42:46,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:42:46,538 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 [2023-08-26 10:42:46,595 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:42:46,595 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 23 treesize of output 10 [2023-08-26 10:42:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:42:46,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 10:42:46,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432550333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:42:46,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 10:42:46,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-26 10:42:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107781984] [2023-08-26 10:42:46,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:42:46,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 10:42:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:42:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 10:42:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-08-26 10:42:46,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 759 [2023-08-26 10:42:46,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 594 transitions, 6329 flow. Second operand has 8 states, 8 states have (on average 245.875) internal successors, (1967), 8 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:46,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:42:46,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 759 [2023-08-26 10:42:46,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:42:58,181 INFO L124 PetriNetUnfolderBase]: 33021/54206 cut-off events. [2023-08-26 10:42:58,181 INFO L125 PetriNetUnfolderBase]: For 565991/567955 co-relation queries the response was YES. [2023-08-26 10:42:58,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294763 conditions, 54206 events. 33021/54206 cut-off events. For 565991/567955 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 459193 event pairs, 9043 based on Foata normal form. 1110/54890 useless extension candidates. Maximal degree in co-relation 294703. Up to 34834 conditions per place. [2023-08-26 10:42:58,842 INFO L140 encePairwiseOnDemand]: 753/759 looper letters, 613 selfloop transitions, 205 changer transitions 1/825 dead transitions. [2023-08-26 10:42:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 825 transitions, 10521 flow [2023-08-26 10:42:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 10:42:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 10:42:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2022 transitions. [2023-08-26 10:42:58,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33300395256917 [2023-08-26 10:42:58,845 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2022 transitions. [2023-08-26 10:42:58,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2022 transitions. [2023-08-26 10:42:58,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:42:58,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2022 transitions. [2023-08-26 10:42:58,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 252.75) internal successors, (2022), 8 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:58,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:58,851 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:42:58,852 INFO L175 Difference]: Start difference. First operand has 174 places, 594 transitions, 6329 flow. Second operand 8 states and 2022 transitions. [2023-08-26 10:42:58,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 825 transitions, 10521 flow [2023-08-26 10:43:04,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 825 transitions, 10386 flow, removed 57 selfloop flow, removed 2 redundant places. [2023-08-26 10:43:04,747 INFO L231 Difference]: Finished difference. Result has 183 places, 663 transitions, 7868 flow [2023-08-26 10:43:04,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=6194, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7868, PETRI_PLACES=183, PETRI_TRANSITIONS=663} [2023-08-26 10:43:04,748 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 69 predicate places. [2023-08-26 10:43:04,748 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 663 transitions, 7868 flow [2023-08-26 10:43:04,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 245.875) internal successors, (1967), 8 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:04,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:43:04,749 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:43:04,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 10:43:04,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 10:43:04,949 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:43:04,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:43:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1539549323, now seen corresponding path program 6 times [2023-08-26 10:43:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:43:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491000834] [2023-08-26 10:43:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:43:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:43:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:43:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:43:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:43:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491000834] [2023-08-26 10:43:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491000834] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:43:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233201128] [2023-08-26 10:43:06,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:43:06,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:43:06,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:43:06,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:43:06,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 10:43:09,149 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:43:09,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:43:09,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 10:43:09,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:43:09,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:43:09,284 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 [2023-08-26 10:43:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:43:09,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:43:09,394 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1884 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1884) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-26 10:43:09,402 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:43:09,403 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 45 treesize of output 37 [2023-08-26 10:43:09,408 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 24 treesize of output 18 [2023-08-26 10:43:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:43:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233201128] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:43:09,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:43:09,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 24 [2023-08-26 10:43:09,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269419454] [2023-08-26 10:43:09,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:43:09,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 10:43:09,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:43:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 10:43:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=492, Unknown=1, NotChecked=44, Total=600 [2023-08-26 10:43:09,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 759 [2023-08-26 10:43:09,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 663 transitions, 7868 flow. Second operand has 25 states, 25 states have (on average 221.6) internal successors, (5540), 25 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:09,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:43:09,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 759 [2023-08-26 10:43:09,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:43:20,893 INFO L124 PetriNetUnfolderBase]: 27802/49922 cut-off events. [2023-08-26 10:43:20,893 INFO L125 PetriNetUnfolderBase]: For 474916/477343 co-relation queries the response was YES. [2023-08-26 10:43:21,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275533 conditions, 49922 events. 27802/49922 cut-off events. For 474916/477343 co-relation queries the response was YES. Maximal size of possible extension queue 2362. Compared 467014 event pairs, 5364 based on Foata normal form. 886/50355 useless extension candidates. Maximal degree in co-relation 275468. Up to 22145 conditions per place. [2023-08-26 10:43:21,751 INFO L140 encePairwiseOnDemand]: 746/759 looper letters, 771 selfloop transitions, 467 changer transitions 224/1472 dead transitions. [2023-08-26 10:43:21,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1472 transitions, 19566 flow [2023-08-26 10:43:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 10:43:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 10:43:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4304 transitions. [2023-08-26 10:43:21,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29845364399140145 [2023-08-26 10:43:21,756 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4304 transitions. [2023-08-26 10:43:21,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4304 transitions. [2023-08-26 10:43:21,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:43:21,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4304 transitions. [2023-08-26 10:43:21,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 226.52631578947367) internal successors, (4304), 19 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:21,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:21,771 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:21,771 INFO L175 Difference]: Start difference. First operand has 183 places, 663 transitions, 7868 flow. Second operand 19 states and 4304 transitions. [2023-08-26 10:43:21,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1472 transitions, 19566 flow [2023-08-26 10:43:30,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 1472 transitions, 19317 flow, removed 112 selfloop flow, removed 2 redundant places. [2023-08-26 10:43:30,153 INFO L231 Difference]: Finished difference. Result has 209 places, 887 transitions, 12186 flow [2023-08-26 10:43:30,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=7687, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12186, PETRI_PLACES=209, PETRI_TRANSITIONS=887} [2023-08-26 10:43:30,154 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 95 predicate places. [2023-08-26 10:43:30,154 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 887 transitions, 12186 flow [2023-08-26 10:43:30,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 221.6) internal successors, (5540), 25 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:30,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:43:30,155 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:43:30,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 10:43:30,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:43:30,357 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:43:30,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:43:30,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1732174979, now seen corresponding path program 7 times [2023-08-26 10:43:30,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:43:30,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650241812] [2023-08-26 10:43:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:43:30,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:43:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:43:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:43:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:43:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650241812] [2023-08-26 10:43:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650241812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:43:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362928158] [2023-08-26 10:43:32,443 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:43:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:43:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:43:32,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:43:32,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 10:43:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:43:32,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 10:43:32,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:43:32,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:43:32,913 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 [2023-08-26 10:43:32,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:43:32,950 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 [2023-08-26 10:43:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:43:33,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:43:33,143 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:43:33,144 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 85 treesize of output 77 [2023-08-26 10:43:33,148 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 64 treesize of output 52 [2023-08-26 10:43:33,152 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 52 treesize of output 46 [2023-08-26 10:43:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:43:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362928158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:43:33,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:43:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 31 [2023-08-26 10:43:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742936114] [2023-08-26 10:43:33,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:43:33,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 10:43:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:43:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 10:43:33,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=879, Unknown=12, NotChecked=0, Total=992 [2023-08-26 10:43:33,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 759 [2023-08-26 10:43:33,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 887 transitions, 12186 flow. Second operand has 32 states, 32 states have (on average 202.28125) internal successors, (6473), 32 states have internal predecessors, (6473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:33,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:43:33,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 759 [2023-08-26 10:43:33,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:43:51,071 INFO L124 PetriNetUnfolderBase]: 37779/62869 cut-off events. [2023-08-26 10:43:51,072 INFO L125 PetriNetUnfolderBase]: For 799969/802808 co-relation queries the response was YES. [2023-08-26 10:43:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391431 conditions, 62869 events. 37779/62869 cut-off events. For 799969/802808 co-relation queries the response was YES. Maximal size of possible extension queue 2381. Compared 549987 event pairs, 7184 based on Foata normal form. 1383/63825 useless extension candidates. Maximal degree in co-relation 391356. Up to 26135 conditions per place. [2023-08-26 10:43:51,979 INFO L140 encePairwiseOnDemand]: 746/759 looper letters, 804 selfloop transitions, 603 changer transitions 260/1672 dead transitions. [2023-08-26 10:43:51,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1672 transitions, 24444 flow [2023-08-26 10:43:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 10:43:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 10:43:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4801 transitions. [2023-08-26 10:43:51,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27501861717362663 [2023-08-26 10:43:51,986 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4801 transitions. [2023-08-26 10:43:51,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4801 transitions. [2023-08-26 10:43:51,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:43:51,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4801 transitions. [2023-08-26 10:43:51,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 208.7391304347826) internal successors, (4801), 23 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:52,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 759.0) internal successors, (18216), 24 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:52,002 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 759.0) internal successors, (18216), 24 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:43:52,002 INFO L175 Difference]: Start difference. First operand has 209 places, 887 transitions, 12186 flow. Second operand 23 states and 4801 transitions. [2023-08-26 10:43:52,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1672 transitions, 24444 flow [2023-08-26 10:44:04,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1672 transitions, 24225 flow, removed 104 selfloop flow, removed 4 redundant places. [2023-08-26 10:44:04,377 INFO L231 Difference]: Finished difference. Result has 235 places, 1024 transitions, 16110 flow [2023-08-26 10:44:04,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=11960, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=16110, PETRI_PLACES=235, PETRI_TRANSITIONS=1024} [2023-08-26 10:44:04,377 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 121 predicate places. [2023-08-26 10:44:04,378 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 1024 transitions, 16110 flow [2023-08-26 10:44:04,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 202.28125) internal successors, (6473), 32 states have internal predecessors, (6473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:04,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:44:04,378 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] [2023-08-26 10:44:04,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-26 10:44:04,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 10:44:04,579 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:44:04,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:44:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash 49920021, now seen corresponding path program 1 times [2023-08-26 10:44:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:44:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050092228] [2023-08-26 10:44:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:44:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:44:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:44:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:44:04,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:44:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050092228] [2023-08-26 10:44:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050092228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:44:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918586898] [2023-08-26 10:44:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:44:04,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:44:04,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:44:04,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:44:04,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 10:44:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:44:05,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:44:05,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:44:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:44:05,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:44:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:44:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918586898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:44:05,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:44:05,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-26 10:44:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57965534] [2023-08-26 10:44:05,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:44:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 10:44:05,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:44:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 10:44:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-08-26 10:44:05,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 759 [2023-08-26 10:44:05,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 1024 transitions, 16110 flow. Second operand has 11 states, 11 states have (on average 261.3636363636364) internal successors, (2875), 11 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:05,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:44:05,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 759 [2023-08-26 10:44:05,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:44:14,352 INFO L124 PetriNetUnfolderBase]: 19567/36652 cut-off events. [2023-08-26 10:44:14,352 INFO L125 PetriNetUnfolderBase]: For 469380/470699 co-relation queries the response was YES. [2023-08-26 10:44:14,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216583 conditions, 36652 events. 19567/36652 cut-off events. For 469380/470699 co-relation queries the response was YES. Maximal size of possible extension queue 1829. Compared 345487 event pairs, 7386 based on Foata normal form. 952/37160 useless extension candidates. Maximal degree in co-relation 216500. Up to 25041 conditions per place. [2023-08-26 10:44:14,781 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 692 selfloop transitions, 12 changer transitions 371/1096 dead transitions. [2023-08-26 10:44:14,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1096 transitions, 17980 flow [2023-08-26 10:44:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:44:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:44:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1598 transitions. [2023-08-26 10:44:14,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35090030742204653 [2023-08-26 10:44:14,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1598 transitions. [2023-08-26 10:44:14,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1598 transitions. [2023-08-26 10:44:14,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:44:14,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1598 transitions. [2023-08-26 10:44:14,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:14,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:14,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:14,790 INFO L175 Difference]: Start difference. First operand has 235 places, 1024 transitions, 16110 flow. Second operand 6 states and 1598 transitions. [2023-08-26 10:44:14,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1096 transitions, 17980 flow [2023-08-26 10:44:19,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 1096 transitions, 17459 flow, removed 85 selfloop flow, removed 16 redundant places. [2023-08-26 10:44:19,554 INFO L231 Difference]: Finished difference. Result has 223 places, 725 transitions, 10252 flow [2023-08-26 10:44:19,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=12081, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10252, PETRI_PLACES=223, PETRI_TRANSITIONS=725} [2023-08-26 10:44:19,555 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 109 predicate places. [2023-08-26 10:44:19,555 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 725 transitions, 10252 flow [2023-08-26 10:44:19,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 261.3636363636364) internal successors, (2875), 11 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:19,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:44:19,555 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] [2023-08-26 10:44:19,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 10:44:19,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:44:19,756 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:44:19,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:44:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1487733356, now seen corresponding path program 1 times [2023-08-26 10:44:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:44:19,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897280549] [2023-08-26 10:44:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:44:19,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:44:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:44:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 10:44:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:44:19,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897280549] [2023-08-26 10:44:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897280549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:44:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:44:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:44:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763232685] [2023-08-26 10:44:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:44:19,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:44:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:44:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:44:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:44:19,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-26 10:44:19,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 725 transitions, 10252 flow. Second operand has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:19,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:44:19,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-26 10:44:19,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:44:26,582 INFO L124 PetriNetUnfolderBase]: 17053/30920 cut-off events. [2023-08-26 10:44:26,582 INFO L125 PetriNetUnfolderBase]: For 359495/360750 co-relation queries the response was YES. [2023-08-26 10:44:26,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181038 conditions, 30920 events. 17053/30920 cut-off events. For 359495/360750 co-relation queries the response was YES. Maximal size of possible extension queue 1615. Compared 275513 event pairs, 3392 based on Foata normal form. 220/30838 useless extension candidates. Maximal degree in co-relation 180959. Up to 20022 conditions per place. [2023-08-26 10:44:26,913 INFO L140 encePairwiseOnDemand]: 755/759 looper letters, 606 selfloop transitions, 174 changer transitions 16/817 dead transitions. [2023-08-26 10:44:26,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 817 transitions, 13310 flow [2023-08-26 10:44:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:44:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:44:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1235 transitions. [2023-08-26 10:44:26,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067852437417655 [2023-08-26 10:44:26,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1235 transitions. [2023-08-26 10:44:26,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1235 transitions. [2023-08-26 10:44:26,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:44:26,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1235 transitions. [2023-08-26 10:44:26,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:26,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:26,917 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:26,917 INFO L175 Difference]: Start difference. First operand has 223 places, 725 transitions, 10252 flow. Second operand 4 states and 1235 transitions. [2023-08-26 10:44:26,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 817 transitions, 13310 flow [2023-08-26 10:44:29,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 817 transitions, 13021 flow, removed 128 selfloop flow, removed 14 redundant places. [2023-08-26 10:44:29,786 INFO L231 Difference]: Finished difference. Result has 198 places, 713 transitions, 10549 flow [2023-08-26 10:44:29,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=10042, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=10549, PETRI_PLACES=198, PETRI_TRANSITIONS=713} [2023-08-26 10:44:29,787 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 84 predicate places. [2023-08-26 10:44:29,787 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 713 transitions, 10549 flow [2023-08-26 10:44:29,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:29,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:44:29,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:44:29,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 10:44:29,787 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:44:29,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:44:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash -557646252, now seen corresponding path program 2 times [2023-08-26 10:44:29,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:44:29,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184855389] [2023-08-26 10:44:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:44:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:44:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:44:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:44:30,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:44:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184855389] [2023-08-26 10:44:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184855389] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:44:30,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980836411] [2023-08-26 10:44:30,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:44:30,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:44:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:44:30,354 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:44:30,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 10:44:31,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:44:31,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:44:31,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-26 10:44:31,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:44:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:44:31,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:44:31,638 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:44:31,638 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 24 treesize of output 11 [2023-08-26 10:44:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:44:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980836411] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:44:31,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:44:31,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-26 10:44:31,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422819389] [2023-08-26 10:44:31,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:44:31,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 10:44:31,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:44:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 10:44:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-08-26 10:44:31,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 759 [2023-08-26 10:44:31,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 713 transitions, 10549 flow. Second operand has 24 states, 24 states have (on average 240.83333333333334) internal successors, (5780), 24 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:31,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:44:31,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 759 [2023-08-26 10:44:31,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:44:51,778 INFO L124 PetriNetUnfolderBase]: 47389/84996 cut-off events. [2023-08-26 10:44:51,779 INFO L125 PetriNetUnfolderBase]: For 958508/961747 co-relation queries the response was YES. [2023-08-26 10:44:52,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502493 conditions, 84996 events. 47389/84996 cut-off events. For 958508/961747 co-relation queries the response was YES. Maximal size of possible extension queue 4000. Compared 851623 event pairs, 5208 based on Foata normal form. 3406/87748 useless extension candidates. Maximal degree in co-relation 502422. Up to 24405 conditions per place. [2023-08-26 10:44:53,246 INFO L140 encePairwiseOnDemand]: 750/759 looper letters, 2917 selfloop transitions, 400 changer transitions 1/3332 dead transitions. [2023-08-26 10:44:53,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 3332 transitions, 56213 flow [2023-08-26 10:44:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 10:44:53,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 10:44:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4452 transitions. [2023-08-26 10:44:53,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258673693456302 [2023-08-26 10:44:53,249 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4452 transitions. [2023-08-26 10:44:53,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4452 transitions. [2023-08-26 10:44:53,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:44:53,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4452 transitions. [2023-08-26 10:44:53,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 247.33333333333334) internal successors, (4452), 18 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:53,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 759.0) internal successors, (14421), 19 states have internal predecessors, (14421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:53,259 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 759.0) internal successors, (14421), 19 states have internal predecessors, (14421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:44:53,259 INFO L175 Difference]: Start difference. First operand has 198 places, 713 transitions, 10549 flow. Second operand 18 states and 4452 transitions. [2023-08-26 10:44:53,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 3332 transitions, 56213 flow [2023-08-26 10:45:10,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 3332 transitions, 53881 flow, removed 35 selfloop flow, removed 9 redundant places. [2023-08-26 10:45:10,982 INFO L231 Difference]: Finished difference. Result has 209 places, 1056 transitions, 17850 flow [2023-08-26 10:45:10,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=10043, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=17850, PETRI_PLACES=209, PETRI_TRANSITIONS=1056} [2023-08-26 10:45:10,983 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 95 predicate places. [2023-08-26 10:45:10,983 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 1056 transitions, 17850 flow [2023-08-26 10:45:10,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 240.83333333333334) internal successors, (5780), 24 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:45:10,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:45:10,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:45:10,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 10:45:11,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-26 10:45:11,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-26 10:45:11,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:45:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1691810028, now seen corresponding path program 3 times [2023-08-26 10:45:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:45:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804965095] [2023-08-26 10:45:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:45:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:45:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:45:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:45:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:45:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804965095] [2023-08-26 10:45:12,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804965095] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:45:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484483679] [2023-08-26 10:45:12,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:45:12,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:45:12,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:45:12,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:45:12,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 10:45:14,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:45:14,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:45:14,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 10:45:14,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:45:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:45:14,349 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 [2023-08-26 10:45:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:45:14,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:45:14,606 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:45:14,606 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 44 treesize of output 36 [2023-08-26 10:45:14,609 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 24 treesize of output 18 [2023-08-26 10:45:14,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 10:45:14,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484483679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:45:14,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:45:14,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-08-26 10:45:14,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113264306] [2023-08-26 10:45:14,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:45:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 10:45:14,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:45:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 10:45:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-08-26 10:45:14,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 759 [2023-08-26 10:45:14,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 1056 transitions, 17850 flow. Second operand has 28 states, 28 states have (on average 212.57142857142858) internal successors, (5952), 28 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:45:14,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:45:14,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 759 [2023-08-26 10:45:14,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand