/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 20:06:24,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 20:06:24,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 20:06:24,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 20:06:24,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 20:06:24,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 20:06:24,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 20:06:24,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 20:06:24,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 20:06:24,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 20:06:24,280 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 20:06:24,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 20:06:24,281 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 20:06:24,282 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 20:06:24,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 20:06:24,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 20:06:24,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 20:06:24,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 20:06:24,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 20:06:24,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 20:06:24,283 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 20:06:24,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 20:06:24,284 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 20:06:24,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 20:06:24,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 20:06:24,285 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 20:06:24,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 20:06:24,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:06:24,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 20:06:24,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 20:06:24,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 20:06:24,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 20:06:24,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 20:06:24,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 20:06:24,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 20:06:24,288 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 20:06:24,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 20:06:24,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 20:06:24,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 20:06:24,639 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 20:06:24,640 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 20:06:24,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2023-08-25 20:06:25,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 20:06:25,996 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 20:06:25,996 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2023-08-25 20:06:26,006 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be50ecf45/cb5f4abacb7e4a96ab1cc905e84f08f0/FLAG5a67207d8 [2023-08-25 20:06:26,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be50ecf45/cb5f4abacb7e4a96ab1cc905e84f08f0 [2023-08-25 20:06:26,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 20:06:26,028 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 20:06:26,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 20:06:26,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 20:06:26,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 20:06:26,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3983b35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26, skipping insertion in model container [2023-08-25 20:06:26,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,064 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 20:06:26,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:06:26,296 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 20:06:26,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 20:06:26,346 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:06:26,347 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 20:06:26,353 INFO L206 MainTranslator]: Completed translation [2023-08-25 20:06:26,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26 WrapperNode [2023-08-25 20:06:26,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 20:06:26,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 20:06:26,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 20:06:26,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 20:06:26,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,411 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 288 [2023-08-25 20:06:26,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 20:06:26,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 20:06:26,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 20:06:26,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 20:06:26,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 20:06:26,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 20:06:26,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 20:06:26,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 20:06:26,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (1/1) ... [2023-08-25 20:06:26,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 20:06:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:26,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 20:06:26,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 20:06:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 20:06:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 20:06:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 20:06:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 20:06:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 20:06:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 20:06:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 20:06:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 20:06:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 20:06:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 20:06:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 20:06:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 20:06:26,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 20:06:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 20:06:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 20:06:26,540 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 20:06:26,632 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 20:06:26,634 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 20:06:27,047 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 20:06:27,175 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 20:06:27,175 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 20:06:27,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:27 BoogieIcfgContainer [2023-08-25 20:06:27,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 20:06:27,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 20:06:27,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 20:06:27,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 20:06:27,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:06:26" (1/3) ... [2023-08-25 20:06:27,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1feec569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:27, skipping insertion in model container [2023-08-25 20:06:27,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:06:26" (2/3) ... [2023-08-25 20:06:27,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1feec569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:06:27, skipping insertion in model container [2023-08-25 20:06:27,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:06:27" (3/3) ... [2023-08-25 20:06:27,184 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2023-08-25 20:06:27,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 20:06:27,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2023-08-25 20:06:27,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 20:06:27,290 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 20:06:27,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 260 transitions, 536 flow [2023-08-25 20:06:27,405 INFO L124 PetriNetUnfolderBase]: 13/258 cut-off events. [2023-08-25 20:06:27,405 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 20:06:27,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 258 events. 13/258 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 446 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-25 20:06:27,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 260 transitions, 536 flow [2023-08-25 20:06:27,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 249 transitions, 510 flow [2023-08-25 20:06:27,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 20:06:27,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 249 transitions, 510 flow [2023-08-25 20:06:27,434 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 249 transitions, 510 flow [2023-08-25 20:06:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 249 transitions, 510 flow [2023-08-25 20:06:27,477 INFO L124 PetriNetUnfolderBase]: 13/249 cut-off events. [2023-08-25 20:06:27,478 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 20:06:27,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 249 events. 13/249 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 432 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-25 20:06:27,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 7740 [2023-08-25 20:06:33,949 INFO L134 LiptonReduction]: Checked pairs total: 33103 [2023-08-25 20:06:33,950 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-08-25 20:06:33,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 20:06:33,968 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;@1ade3d63, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 20:06:33,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-08-25 20:06:33,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 20:06:33,969 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 20:06:33,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 20:06:33,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:33,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 20:06:33,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:33,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1161, now seen corresponding path program 1 times [2023-08-25 20:06:33,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025715425] [2023-08-25 20:06:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:34,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:34,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025715425] [2023-08-25 20:06:34,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025715425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:34,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:34,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 20:06:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421525338] [2023-08-25 20:06:34,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:34,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 20:06:34,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 20:06:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 20:06:34,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 531 [2023-08-25 20:06:34,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:34,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 531 [2023-08-25 20:06:34,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:34,262 INFO L124 PetriNetUnfolderBase]: 227/542 cut-off events. [2023-08-25 20:06:34,262 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-25 20:06:34,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 542 events. 227/542 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2826 event pairs, 154 based on Foata normal form. 14/459 useless extension candidates. Maximal degree in co-relation 829. Up to 368 conditions per place. [2023-08-25 20:06:34,271 INFO L140 encePairwiseOnDemand]: 495/531 looper letters, 26 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2023-08-25 20:06:34,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 152 flow [2023-08-25 20:06:34,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 20:06:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 20:06:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 510 transitions. [2023-08-25 20:06:34,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480225988700565 [2023-08-25 20:06:34,291 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 510 transitions. [2023-08-25 20:06:34,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 510 transitions. [2023-08-25 20:06:34,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:34,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 510 transitions. [2023-08-25 20:06:34,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 255.0) internal successors, (510), 2 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,308 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 531.0) internal successors, (1593), 3 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,310 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 172 flow. Second operand 2 states and 510 transitions. [2023-08-25 20:06:34,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 152 flow [2023-08-25 20:06:34,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:06:34,316 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 92 flow [2023-08-25 20:06:34,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-08-25 20:06:34,322 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -38 predicate places. [2023-08-25 20:06:34,322 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 92 flow [2023-08-25 20:06:34,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:34,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 20:06:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 20:06:34,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:34,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 191706826, now seen corresponding path program 1 times [2023-08-25 20:06:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:34,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566982488] [2023-08-25 20:06:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:34,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566982488] [2023-08-25 20:06:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566982488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:34,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:06:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782537872] [2023-08-25 20:06:34,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:34,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:06:34,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:06:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:06:34,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 531 [2023-08-25 20:06:34,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:34,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 531 [2023-08-25 20:06:34,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:34,577 INFO L124 PetriNetUnfolderBase]: 227/537 cut-off events. [2023-08-25 20:06:34,577 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 20:06:34,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 537 events. 227/537 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2770 event pairs, 154 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 914. Up to 367 conditions per place. [2023-08-25 20:06:34,581 INFO L140 encePairwiseOnDemand]: 529/531 looper letters, 25 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-25 20:06:34,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 142 flow [2023-08-25 20:06:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:06:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:06:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-08-25 20:06:34,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218455743879473 [2023-08-25 20:06:34,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-08-25 20:06:34,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-08-25 20:06:34,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:34,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-08-25 20:06:34,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,592 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 92 flow. Second operand 3 states and 672 transitions. [2023-08-25 20:06:34,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 142 flow [2023-08-25 20:06:34,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:06:34,594 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 92 flow [2023-08-25 20:06:34,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-25 20:06:34,595 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -37 predicate places. [2023-08-25 20:06:34,595 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 92 flow [2023-08-25 20:06:34,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:34,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:34,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 20:06:34,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:34,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash -453022719, now seen corresponding path program 1 times [2023-08-25 20:06:34,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:34,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59334827] [2023-08-25 20:06:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:34,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:34,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59334827] [2023-08-25 20:06:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59334827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:34,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 20:06:34,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819115189] [2023-08-25 20:06:34,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:06:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:06:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:06:34,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 531 [2023-08-25 20:06:34,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:34,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 531 [2023-08-25 20:06:34,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:34,826 INFO L124 PetriNetUnfolderBase]: 300/608 cut-off events. [2023-08-25 20:06:34,826 INFO L125 PetriNetUnfolderBase]: For 10/15 co-relation queries the response was YES. [2023-08-25 20:06:34,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 608 events. 300/608 cut-off events. For 10/15 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2876 event pairs, 60 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 1109. Up to 393 conditions per place. [2023-08-25 20:06:34,830 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 39 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-25 20:06:34,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 209 flow [2023-08-25 20:06:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:06:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:06:34,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-25 20:06:34,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43753923414940366 [2023-08-25 20:06:34,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-25 20:06:34,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-25 20:06:34,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:34,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-25 20:06:34,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,838 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 92 flow. Second operand 3 states and 697 transitions. [2023-08-25 20:06:34,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 209 flow [2023-08-25 20:06:34,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:06:34,841 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 110 flow [2023-08-25 20:06:34,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-25 20:06:34,842 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -36 predicate places. [2023-08-25 20:06:34,843 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 110 flow [2023-08-25 20:06:34,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:34,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:34,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:34,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 20:06:34,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:34,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash -381733309, now seen corresponding path program 1 times [2023-08-25 20:06:34,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:34,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625818942] [2023-08-25 20:06:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:34,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:35,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:35,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625818942] [2023-08-25 20:06:35,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625818942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:35,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:35,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:06:35,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334887316] [2023-08-25 20:06:35,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:35,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:06:35,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:06:35,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:06:35,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 531 [2023-08-25 20:06:35,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:35,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:35,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 531 [2023-08-25 20:06:35,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:35,689 INFO L124 PetriNetUnfolderBase]: 1392/2087 cut-off events. [2023-08-25 20:06:35,690 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-08-25 20:06:35,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4604 conditions, 2087 events. 1392/2087 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9403 event pairs, 104 based on Foata normal form. 0/1638 useless extension candidates. Maximal degree in co-relation 4600. Up to 803 conditions per place. [2023-08-25 20:06:35,702 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 131 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2023-08-25 20:06:35,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 136 transitions, 622 flow [2023-08-25 20:06:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:06:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:06:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1285 transitions. [2023-08-25 20:06:35,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40332705586942874 [2023-08-25 20:06:35,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1285 transitions. [2023-08-25 20:06:35,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1285 transitions. [2023-08-25 20:06:35,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:35,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1285 transitions. [2023-08-25 20:06:35,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:35,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:35,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:35,718 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 110 flow. Second operand 6 states and 1285 transitions. [2023-08-25 20:06:35,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 136 transitions, 622 flow [2023-08-25 20:06:35,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 136 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:06:35,722 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 116 flow [2023-08-25 20:06:35,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-08-25 20:06:35,723 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -32 predicate places. [2023-08-25 20:06:35,723 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 116 flow [2023-08-25 20:06:35,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.66666666666666) internal successors, (1174), 6 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:35,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:35,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:35,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 20:06:35,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:35,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:35,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1767050411, now seen corresponding path program 1 times [2023-08-25 20:06:35,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:35,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412395051] [2023-08-25 20:06:35,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:35,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:35,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412395051] [2023-08-25 20:06:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412395051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:06:35,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605348712] [2023-08-25 20:06:35,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:35,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:06:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:06:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:06:35,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 531 [2023-08-25 20:06:35,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:35,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:35,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 531 [2023-08-25 20:06:35,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:36,365 INFO L124 PetriNetUnfolderBase]: 1312/1969 cut-off events. [2023-08-25 20:06:36,365 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-08-25 20:06:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4724 conditions, 1969 events. 1312/1969 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8483 event pairs, 678 based on Foata normal form. 0/1576 useless extension candidates. Maximal degree in co-relation 4719. Up to 1496 conditions per place. [2023-08-25 20:06:36,378 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 89 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2023-08-25 20:06:36,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 458 flow [2023-08-25 20:06:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:06:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:06:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2023-08-25 20:06:36,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386691776522285 [2023-08-25 20:06:36,382 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2023-08-25 20:06:36,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2023-08-25 20:06:36,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:36,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2023-08-25 20:06:36,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:36,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:36,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:36,393 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 116 flow. Second operand 6 states and 1232 transitions. [2023-08-25 20:06:36,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 458 flow [2023-08-25 20:06:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 423 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:06:36,396 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 117 flow [2023-08-25 20:06:36,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-08-25 20:06:36,397 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -32 predicate places. [2023-08-25 20:06:36,397 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 117 flow [2023-08-25 20:06:36,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.33333333333334) internal successors, (1154), 6 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:36,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:36,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:36,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 20:06:36,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:36,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash 479861206, now seen corresponding path program 1 times [2023-08-25 20:06:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000003187] [2023-08-25 20:06:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000003187] [2023-08-25 20:06:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000003187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:36,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:36,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 20:06:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220085291] [2023-08-25 20:06:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 20:06:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 20:06:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 20:06:36,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 531 [2023-08-25 20:06:36,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:36,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:36,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 531 [2023-08-25 20:06:36,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:36,978 INFO L124 PetriNetUnfolderBase]: 1300/1948 cut-off events. [2023-08-25 20:06:36,979 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-25 20:06:36,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 1948 events. 1300/1948 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8333 event pairs, 884 based on Foata normal form. 0/1567 useless extension candidates. Maximal degree in co-relation 4585. Up to 1838 conditions per place. [2023-08-25 20:06:36,990 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-25 20:06:36,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 365 flow [2023-08-25 20:06:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 20:06:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 20:06:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2023-08-25 20:06:36,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851224105461394 [2023-08-25 20:06:36,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2023-08-25 20:06:36,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2023-08-25 20:06:36,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:36,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2023-08-25 20:06:36,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,003 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 117 flow. Second operand 6 states and 1227 transitions. [2023-08-25 20:06:37,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 365 flow [2023-08-25 20:06:37,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 355 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-25 20:06:37,006 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 113 flow [2023-08-25 20:06:37,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-25 20:06:37,007 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -33 predicate places. [2023-08-25 20:06:37,007 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 113 flow [2023-08-25 20:06:37,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:37,008 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] [2023-08-25 20:06:37,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 20:06:37,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:37,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:37,009 INFO L85 PathProgramCache]: Analyzing trace with hash 832746094, now seen corresponding path program 1 times [2023-08-25 20:06:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299201817] [2023-08-25 20:06:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:37,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:37,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299201817] [2023-08-25 20:06:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299201817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:37,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:37,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 20:06:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162421141] [2023-08-25 20:06:37,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:37,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:06:37,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:06:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:06:37,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 531 [2023-08-25 20:06:37,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:37,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 531 [2023-08-25 20:06:37,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:37,182 INFO L124 PetriNetUnfolderBase]: 452/924 cut-off events. [2023-08-25 20:06:37,182 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-25 20:06:37,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 924 events. 452/924 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4405 event pairs, 165 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 1900. Up to 382 conditions per place. [2023-08-25 20:06:37,187 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 42 selfloop transitions, 2 changer transitions 4/61 dead transitions. [2023-08-25 20:06:37,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 258 flow [2023-08-25 20:06:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:06:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:06:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-25 20:06:37,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44318895166352795 [2023-08-25 20:06:37,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-25 20:06:37,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-25 20:06:37,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:37,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-25 20:06:37,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,195 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 113 flow. Second operand 3 states and 706 transitions. [2023-08-25 20:06:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 258 flow [2023-08-25 20:06:37,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 249 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 20:06:37,197 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 118 flow [2023-08-25 20:06:37,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-25 20:06:37,197 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -34 predicate places. [2023-08-25 20:06:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 118 flow [2023-08-25 20:06:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:37,198 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] [2023-08-25 20:06:37,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 20:06:37,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:37,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1520066032, now seen corresponding path program 1 times [2023-08-25 20:06:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398142264] [2023-08-25 20:06:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:37,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398142264] [2023-08-25 20:06:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398142264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:37,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:37,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:06:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525802419] [2023-08-25 20:06:37,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:06:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:06:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:06:37,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 531 [2023-08-25 20:06:37,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:37,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 531 [2023-08-25 20:06:37,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:37,501 INFO L124 PetriNetUnfolderBase]: 491/856 cut-off events. [2023-08-25 20:06:37,501 INFO L125 PetriNetUnfolderBase]: For 60/116 co-relation queries the response was YES. [2023-08-25 20:06:37,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 856 events. 491/856 cut-off events. For 60/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3043 event pairs, 180 based on Foata normal form. 4/716 useless extension candidates. Maximal degree in co-relation 1865. Up to 712 conditions per place. [2023-08-25 20:06:37,506 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 40 selfloop transitions, 6 changer transitions 6/61 dead transitions. [2023-08-25 20:06:37,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 264 flow [2023-08-25 20:06:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:06:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:06:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 880 transitions. [2023-08-25 20:06:37,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143126177024482 [2023-08-25 20:06:37,510 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 880 transitions. [2023-08-25 20:06:37,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 880 transitions. [2023-08-25 20:06:37,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:37,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 880 transitions. [2023-08-25 20:06:37,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,537 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 118 flow. Second operand 4 states and 880 transitions. [2023-08-25 20:06:37,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 264 flow [2023-08-25 20:06:37,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:06:37,540 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 148 flow [2023-08-25 20:06:37,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-25 20:06:37,542 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -30 predicate places. [2023-08-25 20:06:37,542 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 148 flow [2023-08-25 20:06:37,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:37,542 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] [2023-08-25 20:06:37,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 20:06:37,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:37,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1553536913, now seen corresponding path program 1 times [2023-08-25 20:06:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:37,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152593946] [2023-08-25 20:06:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:06:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152593946] [2023-08-25 20:06:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152593946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:37,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:06:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252449205] [2023-08-25 20:06:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:06:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:06:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:06:37,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 531 [2023-08-25 20:06:37,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:37,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 531 [2023-08-25 20:06:37,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:37,792 INFO L124 PetriNetUnfolderBase]: 370/839 cut-off events. [2023-08-25 20:06:37,792 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-08-25 20:06:37,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 839 events. 370/839 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3862 event pairs, 269 based on Foata normal form. 0/740 useless extension candidates. Maximal degree in co-relation 1824. Up to 588 conditions per place. [2023-08-25 20:06:37,796 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 33 selfloop transitions, 2 changer transitions 11/59 dead transitions. [2023-08-25 20:06:37,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 272 flow [2023-08-25 20:06:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:06:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:06:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 847 transitions. [2023-08-25 20:06:37,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987758945386064 [2023-08-25 20:06:37,799 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 847 transitions. [2023-08-25 20:06:37,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 847 transitions. [2023-08-25 20:06:37,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:37,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 847 transitions. [2023-08-25 20:06:37,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,805 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 148 flow. Second operand 4 states and 847 transitions. [2023-08-25 20:06:37,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 272 flow [2023-08-25 20:06:37,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 20:06:37,807 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 162 flow [2023-08-25 20:06:37,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-08-25 20:06:37,808 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -25 predicate places. [2023-08-25 20:06:37,808 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 162 flow [2023-08-25 20:06:37,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.75) internal successors, (831), 4 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:37,809 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] [2023-08-25 20:06:37,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 20:06:37,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:37,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash -29606904, now seen corresponding path program 1 times [2023-08-25 20:06:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:37,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17013412] [2023-08-25 20:06:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:06:37,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17013412] [2023-08-25 20:06:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17013412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:37,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:37,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 20:06:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267455622] [2023-08-25 20:06:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:37,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 20:06:37,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 20:06:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 20:06:37,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 531 [2023-08-25 20:06:37,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:37,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:37,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 531 [2023-08-25 20:06:37,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:38,024 INFO L124 PetriNetUnfolderBase]: 347/716 cut-off events. [2023-08-25 20:06:38,025 INFO L125 PetriNetUnfolderBase]: For 191/195 co-relation queries the response was YES. [2023-08-25 20:06:38,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 716 events. 347/716 cut-off events. For 191/195 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2837 event pairs, 218 based on Foata normal form. 1/676 useless extension candidates. Maximal degree in co-relation 1637. Up to 512 conditions per place. [2023-08-25 20:06:38,029 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 33 selfloop transitions, 3 changer transitions 5/53 dead transitions. [2023-08-25 20:06:38,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 253 flow [2023-08-25 20:06:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 20:06:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 20:06:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-25 20:06:38,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4381669805398619 [2023-08-25 20:06:38,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-25 20:06:38,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-25 20:06:38,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:38,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-25 20:06:38,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,037 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 162 flow. Second operand 3 states and 698 transitions. [2023-08-25 20:06:38,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 253 flow [2023-08-25 20:06:38,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 243 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-25 20:06:38,042 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 145 flow [2023-08-25 20:06:38,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-08-25 20:06:38,043 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -26 predicate places. [2023-08-25 20:06:38,043 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 145 flow [2023-08-25 20:06:38,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:38,044 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] [2023-08-25 20:06:38,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 20:06:38,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:38,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:38,044 INFO L85 PathProgramCache]: Analyzing trace with hash -768105946, now seen corresponding path program 1 times [2023-08-25 20:06:38,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:38,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133569484] [2023-08-25 20:06:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:38,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:06:38,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133569484] [2023-08-25 20:06:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133569484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:38,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844756750] [2023-08-25 20:06:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:38,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:38,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 20:06:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:38,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 20:06:38,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:06:38,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:06:38,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844756750] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:38,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:38,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2023-08-25 20:06:38,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789291320] [2023-08-25 20:06:38,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:38,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 20:06:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 20:06:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-25 20:06:38,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 531 [2023-08-25 20:06:38,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 145 flow. Second operand has 9 states, 9 states have (on average 211.66666666666666) internal successors, (1905), 9 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:38,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 531 [2023-08-25 20:06:38,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:38,923 INFO L124 PetriNetUnfolderBase]: 546/982 cut-off events. [2023-08-25 20:06:38,923 INFO L125 PetriNetUnfolderBase]: For 182/193 co-relation queries the response was YES. [2023-08-25 20:06:38,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 982 events. 546/982 cut-off events. For 182/193 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3874 event pairs, 31 based on Foata normal form. 23/865 useless extension candidates. Maximal degree in co-relation 2246. Up to 523 conditions per place. [2023-08-25 20:06:38,929 INFO L140 encePairwiseOnDemand]: 524/531 looper letters, 45 selfloop transitions, 5 changer transitions 35/94 dead transitions. [2023-08-25 20:06:38,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 447 flow [2023-08-25 20:06:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 20:06:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 20:06:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1741 transitions. [2023-08-25 20:06:38,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098399246704331 [2023-08-25 20:06:38,934 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1741 transitions. [2023-08-25 20:06:38,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1741 transitions. [2023-08-25 20:06:38,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:38,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1741 transitions. [2023-08-25 20:06:38,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 217.625) internal successors, (1741), 8 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,945 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,945 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 145 flow. Second operand 8 states and 1741 transitions. [2023-08-25 20:06:38,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 447 flow [2023-08-25 20:06:38,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 20:06:38,947 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 144 flow [2023-08-25 20:06:38,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2023-08-25 20:06:38,948 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -19 predicate places. [2023-08-25 20:06:38,948 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 144 flow [2023-08-25 20:06:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 211.66666666666666) internal successors, (1905), 9 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:38,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:38,949 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] [2023-08-25 20:06:38,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 20:06:39,155 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,SelfDestructingSolverStorable10 [2023-08-25 20:06:39,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:39,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash -357699616, now seen corresponding path program 2 times [2023-08-25 20:06:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:39,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86230379] [2023-08-25 20:06:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:39,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:39,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86230379] [2023-08-25 20:06:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86230379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:39,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658756585] [2023-08-25 20:06:39,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:06:39,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:39,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:39,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:39,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 20:06:39,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:06:39,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:06:39,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-25 20:06:39,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:39,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 20:06:40,030 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:06:40,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:06:40,366 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-08-25 20:06:40,367 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 10 [2023-08-25 20:06:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:40,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:41,052 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:41,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-08-25 20:06:41,071 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:41,072 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 148 treesize of output 140 [2023-08-25 20:06:41,084 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:41,084 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 132 treesize of output 116 [2023-08-25 20:06:41,100 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:41,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 83 treesize of output 79 [2023-08-25 20:06:41,380 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:41,380 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-08-25 20:06:41,391 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 20:06:41,392 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 316 treesize of output 288 [2023-08-25 20:06:41,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:06:41,407 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 84 [2023-08-25 20:06:41,420 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 20:06:41,421 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 95 treesize of output 75 [2023-08-25 20:06:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:41,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658756585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:41,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:41,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 26 [2023-08-25 20:06:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828138113] [2023-08-25 20:06:41,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:41,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 20:06:41,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 20:06:41,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=602, Unknown=2, NotChecked=0, Total=756 [2023-08-25 20:06:41,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 531 [2023-08-25 20:06:41,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 144 flow. Second operand has 28 states, 28 states have (on average 156.5) internal successors, (4382), 28 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:41,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:41,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 531 [2023-08-25 20:06:41,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:44,590 INFO L124 PetriNetUnfolderBase]: 4753/7295 cut-off events. [2023-08-25 20:06:44,591 INFO L125 PetriNetUnfolderBase]: For 2343/2343 co-relation queries the response was YES. [2023-08-25 20:06:44,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18618 conditions, 7295 events. 4753/7295 cut-off events. For 2343/2343 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 36198 event pairs, 816 based on Foata normal form. 2/6410 useless extension candidates. Maximal degree in co-relation 18607. Up to 2128 conditions per place. [2023-08-25 20:06:44,645 INFO L140 encePairwiseOnDemand]: 518/531 looper letters, 251 selfloop transitions, 42 changer transitions 56/350 dead transitions. [2023-08-25 20:06:44,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 350 transitions, 1705 flow [2023-08-25 20:06:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 20:06:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 20:06:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4325 transitions. [2023-08-25 20:06:44,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31326959293060985 [2023-08-25 20:06:44,657 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4325 transitions. [2023-08-25 20:06:44,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4325 transitions. [2023-08-25 20:06:44,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:44,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4325 transitions. [2023-08-25 20:06:44,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 166.34615384615384) internal successors, (4325), 26 states have internal predecessors, (4325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:44,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 531.0) internal successors, (14337), 27 states have internal predecessors, (14337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:44,688 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 531.0) internal successors, (14337), 27 states have internal predecessors, (14337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:44,688 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 144 flow. Second operand 26 states and 4325 transitions. [2023-08-25 20:06:44,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 350 transitions, 1705 flow [2023-08-25 20:06:44,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 350 transitions, 1601 flow, removed 25 selfloop flow, removed 6 redundant places. [2023-08-25 20:06:44,802 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 469 flow [2023-08-25 20:06:44,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=469, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2023-08-25 20:06:44,803 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 14 predicate places. [2023-08-25 20:06:44,803 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 469 flow [2023-08-25 20:06:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 156.5) internal successors, (4382), 28 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:44,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:44,804 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:44,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 20:06:45,010 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,SelfDestructingSolverStorable11 [2023-08-25 20:06:45,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:45,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:45,011 INFO L85 PathProgramCache]: Analyzing trace with hash -370371385, now seen corresponding path program 3 times [2023-08-25 20:06:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:45,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703723647] [2023-08-25 20:06:45,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:45,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703723647] [2023-08-25 20:06:46,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703723647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:46,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965164351] [2023-08-25 20:06:46,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:06:46,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:46,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:46,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 20:06:46,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 20:06:46,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:06:46,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-25 20:06:46,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 20:06:47,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:47,264 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:47,264 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 40 treesize of output 24 [2023-08-25 20:06:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 20:06:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965164351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:47,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:47,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 19 [2023-08-25 20:06:47,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616066175] [2023-08-25 20:06:47,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 20:06:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 20:06:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2023-08-25 20:06:47,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 531 [2023-08-25 20:06:47,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 469 flow. Second operand has 21 states, 21 states have (on average 175.85714285714286) internal successors, (3693), 21 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:47,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:47,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 531 [2023-08-25 20:06:47,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:48,429 INFO L124 PetriNetUnfolderBase]: 1804/3199 cut-off events. [2023-08-25 20:06:48,429 INFO L125 PetriNetUnfolderBase]: For 6884/6884 co-relation queries the response was YES. [2023-08-25 20:06:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 3199 events. 1804/3199 cut-off events. For 6884/6884 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 15749 event pairs, 316 based on Foata normal form. 1/3190 useless extension candidates. Maximal degree in co-relation 10178. Up to 1173 conditions per place. [2023-08-25 20:06:48,449 INFO L140 encePairwiseOnDemand]: 523/531 looper letters, 120 selfloop transitions, 38 changer transitions 14/181 dead transitions. [2023-08-25 20:06:48,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 181 transitions, 1290 flow [2023-08-25 20:06:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 20:06:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 20:06:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2886 transitions. [2023-08-25 20:06:48,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3396892655367232 [2023-08-25 20:06:48,457 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2886 transitions. [2023-08-25 20:06:48,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2886 transitions. [2023-08-25 20:06:48,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:48,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2886 transitions. [2023-08-25 20:06:48,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 180.375) internal successors, (2886), 16 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:48,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:48,478 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:48,478 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 469 flow. Second operand 16 states and 2886 transitions. [2023-08-25 20:06:48,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 181 transitions, 1290 flow [2023-08-25 20:06:48,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 1250 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-25 20:06:48,495 INFO L231 Difference]: Finished difference. Result has 113 places, 92 transitions, 616 flow [2023-08-25 20:06:48,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=616, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2023-08-25 20:06:48,495 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 31 predicate places. [2023-08-25 20:06:48,495 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 616 flow [2023-08-25 20:06:48,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 175.85714285714286) internal successors, (3693), 21 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:48,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:48,497 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:48,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 20:06:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:48,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:48,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1544959174, now seen corresponding path program 4 times [2023-08-25 20:06:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755261416] [2023-08-25 20:06:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:06:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755261416] [2023-08-25 20:06:48,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755261416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:48,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574613683] [2023-08-25 20:06:48,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:06:48,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:48,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:48,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 20:06:49,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:06:49,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:06:49,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 20:06:49,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:06:49,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:06:49,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574613683] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:49,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:49,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-08-25 20:06:49,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283577330] [2023-08-25 20:06:49,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 20:06:49,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 20:06:49,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-08-25 20:06:49,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 531 [2023-08-25 20:06:49,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 616 flow. Second operand has 15 states, 15 states have (on average 189.4) internal successors, (2841), 15 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:49,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:49,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 531 [2023-08-25 20:06:49,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:50,443 INFO L124 PetriNetUnfolderBase]: 3211/5630 cut-off events. [2023-08-25 20:06:50,443 INFO L125 PetriNetUnfolderBase]: For 13103/13123 co-relation queries the response was YES. [2023-08-25 20:06:50,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18584 conditions, 5630 events. 3211/5630 cut-off events. For 13103/13123 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 31461 event pairs, 925 based on Foata normal form. 65/5692 useless extension candidates. Maximal degree in co-relation 18554. Up to 2588 conditions per place. [2023-08-25 20:06:50,493 INFO L140 encePairwiseOnDemand]: 519/531 looper letters, 105 selfloop transitions, 30 changer transitions 94/238 dead transitions. [2023-08-25 20:06:50,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 238 transitions, 1781 flow [2023-08-25 20:06:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 20:06:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 20:06:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3115 transitions. [2023-08-25 20:06:50,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3666431261770245 [2023-08-25 20:06:50,502 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3115 transitions. [2023-08-25 20:06:50,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3115 transitions. [2023-08-25 20:06:50,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:50,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3115 transitions. [2023-08-25 20:06:50,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 194.6875) internal successors, (3115), 16 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:50,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:50,519 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 531.0) internal successors, (9027), 17 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:50,519 INFO L175 Difference]: Start difference. First operand has 113 places, 92 transitions, 616 flow. Second operand 16 states and 3115 transitions. [2023-08-25 20:06:50,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 238 transitions, 1781 flow [2023-08-25 20:06:50,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 238 transitions, 1710 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-08-25 20:06:50,553 INFO L231 Difference]: Finished difference. Result has 130 places, 100 transitions, 781 flow [2023-08-25 20:06:50,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=781, PETRI_PLACES=130, PETRI_TRANSITIONS=100} [2023-08-25 20:06:50,553 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 48 predicate places. [2023-08-25 20:06:50,553 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 100 transitions, 781 flow [2023-08-25 20:06:50,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 189.4) internal successors, (2841), 15 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:50,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:50,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:50,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 20:06:50,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:50,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:50,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1357178232, now seen corresponding path program 5 times [2023-08-25 20:06:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:50,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282073859] [2023-08-25 20:06:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 20:06:50,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:50,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282073859] [2023-08-25 20:06:50,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282073859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 20:06:50,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 20:06:50,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 20:06:50,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120504565] [2023-08-25 20:06:50,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 20:06:50,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 20:06:50,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 20:06:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 20:06:50,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 531 [2023-08-25 20:06:50,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 100 transitions, 781 flow. Second operand has 4 states, 4 states have (on average 228.5) internal successors, (914), 4 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:50,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:50,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 531 [2023-08-25 20:06:50,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:51,554 INFO L124 PetriNetUnfolderBase]: 2250/4747 cut-off events. [2023-08-25 20:06:51,554 INFO L125 PetriNetUnfolderBase]: For 21089/21183 co-relation queries the response was YES. [2023-08-25 20:06:51,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17696 conditions, 4747 events. 2250/4747 cut-off events. For 21089/21183 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 30507 event pairs, 862 based on Foata normal form. 408/5137 useless extension candidates. Maximal degree in co-relation 17657. Up to 2059 conditions per place. [2023-08-25 20:06:51,594 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 94 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2023-08-25 20:06:51,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 126 transitions, 1193 flow [2023-08-25 20:06:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 20:06:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 20:06:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 926 transitions. [2023-08-25 20:06:51,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435969868173258 [2023-08-25 20:06:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 926 transitions. [2023-08-25 20:06:51,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 926 transitions. [2023-08-25 20:06:51,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:51,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 926 transitions. [2023-08-25 20:06:51,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.5) internal successors, (926), 4 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:51,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:51,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:51,601 INFO L175 Difference]: Start difference. First operand has 130 places, 100 transitions, 781 flow. Second operand 4 states and 926 transitions. [2023-08-25 20:06:51,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 126 transitions, 1193 flow [2023-08-25 20:06:51,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 126 transitions, 1117 flow, removed 36 selfloop flow, removed 12 redundant places. [2023-08-25 20:06:51,634 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 788 flow [2023-08-25 20:06:51,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=788, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2023-08-25 20:06:51,635 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 24 predicate places. [2023-08-25 20:06:51,635 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 788 flow [2023-08-25 20:06:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.5) internal successors, (914), 4 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:51,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:51,636 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:51,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 20:06:51,636 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:06:51,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 364300406, now seen corresponding path program 1 times [2023-08-25 20:06:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:51,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309433928] [2023-08-25 20:06:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:51,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309433928] [2023-08-25 20:06:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309433928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368636738] [2023-08-25 20:06:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:52,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:52,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 20:06:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:53,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-25 20:06:53,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:53,203 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-25 20:06:53,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 20:06:53,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:06:53,347 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:06:53,969 INFO L322 Elim1Store]: treesize reduction 32, result has 17.9 percent of original size [2023-08-25 20:06:53,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 21 [2023-08-25 20:06:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:54,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:54,992 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:54,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 100 [2023-08-25 20:06:55,014 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:55,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 562 treesize of output 530 [2023-08-25 20:06:55,043 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:55,043 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 190 [2023-08-25 20:06:55,066 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:55,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 163 [2023-08-25 20:06:56,090 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:56,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 100 [2023-08-25 20:06:56,107 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 20:06:56,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 266 treesize of output 240 [2023-08-25 20:06:56,134 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 20:06:56,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 232 treesize of output 188 [2023-08-25 20:06:56,161 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 20:06:56,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 135 [2023-08-25 20:06:56,253 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-25 20:06:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368636738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:56,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:56,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 42 [2023-08-25 20:06:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870054331] [2023-08-25 20:06:56,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:56,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-25 20:06:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:56,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-25 20:06:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1633, Unknown=2, NotChecked=0, Total=1892 [2023-08-25 20:06:56,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 531 [2023-08-25 20:06:56,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 788 flow. Second operand has 44 states, 44 states have (on average 156.1590909090909) internal successors, (6871), 44 states have internal predecessors, (6871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:56,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:56,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 531 [2023-08-25 20:06:56,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:07:20,354 INFO L124 PetriNetUnfolderBase]: 50279/79073 cut-off events. [2023-08-25 20:07:20,354 INFO L125 PetriNetUnfolderBase]: For 226649/226649 co-relation queries the response was YES. [2023-08-25 20:07:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290631 conditions, 79073 events. 50279/79073 cut-off events. For 226649/226649 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 567203 event pairs, 6580 based on Foata normal form. 583/79654 useless extension candidates. Maximal degree in co-relation 290599. Up to 9837 conditions per place. [2023-08-25 20:07:21,096 INFO L140 encePairwiseOnDemand]: 519/531 looper letters, 1531 selfloop transitions, 494 changer transitions 260/2286 dead transitions. [2023-08-25 20:07:21,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 2286 transitions, 15341 flow [2023-08-25 20:07:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-08-25 20:07:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2023-08-25 20:07:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 22257 transitions. [2023-08-25 20:07:21,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3175398048279404 [2023-08-25 20:07:21,121 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 22257 transitions. [2023-08-25 20:07:21,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 22257 transitions. [2023-08-25 20:07:21,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:07:21,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 22257 transitions. [2023-08-25 20:07:21,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 168.61363636363637) internal successors, (22257), 132 states have internal predecessors, (22257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:21,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 531.0) internal successors, (70623), 133 states have internal predecessors, (70623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:21,412 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 531.0) internal successors, (70623), 133 states have internal predecessors, (70623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:21,412 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 788 flow. Second operand 132 states and 22257 transitions. [2023-08-25 20:07:21,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 2286 transitions, 15341 flow [2023-08-25 20:07:21,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 2286 transitions, 14999 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 20:07:21,744 INFO L231 Difference]: Finished difference. Result has 288 places, 592 transitions, 7380 flow [2023-08-25 20:07:21,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=7380, PETRI_PLACES=288, PETRI_TRANSITIONS=592} [2023-08-25 20:07:21,745 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 206 predicate places. [2023-08-25 20:07:21,745 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 592 transitions, 7380 flow [2023-08-25 20:07:21,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 156.1590909090909) internal successors, (6871), 44 states have internal predecessors, (6871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:21,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:07:21,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:07:21,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 20:07:21,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 20:07:21,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:07:21,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:07:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1964828162, now seen corresponding path program 2 times [2023-08-25 20:07:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:07:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432024548] [2023-08-25 20:07:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:07:21,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:07:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:07:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:07:23,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:07:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432024548] [2023-08-25 20:07:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432024548] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:07:23,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370927608] [2023-08-25 20:07:23,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:07:23,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:07:23,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:07:23,329 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:07:23,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 20:07:23,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:07:23,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:07:23,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-25 20:07:23,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:07:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:07:24,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:07:24,836 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:07:24,836 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2023-08-25 20:07:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:07:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370927608] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:07:25,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:07:25,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 39 [2023-08-25 20:07:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936429328] [2023-08-25 20:07:25,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:07:25,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-25 20:07:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:07:25,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-25 20:07:25,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2023-08-25 20:07:25,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 531 [2023-08-25 20:07:25,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 592 transitions, 7380 flow. Second operand has 41 states, 41 states have (on average 175.0) internal successors, (7175), 41 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:25,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:07:25,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 531 [2023-08-25 20:07:25,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:07:54,721 INFO L124 PetriNetUnfolderBase]: 49582/86037 cut-off events. [2023-08-25 20:07:54,721 INFO L125 PetriNetUnfolderBase]: For 1378486/1378752 co-relation queries the response was YES. [2023-08-25 20:07:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421946 conditions, 86037 events. 49582/86037 cut-off events. For 1378486/1378752 co-relation queries the response was YES. Maximal size of possible extension queue 1948. Compared 742646 event pairs, 4390 based on Foata normal form. 959/86994 useless extension candidates. Maximal degree in co-relation 421861. Up to 16425 conditions per place. [2023-08-25 20:07:56,727 INFO L140 encePairwiseOnDemand]: 519/531 looper letters, 1391 selfloop transitions, 1720 changer transitions 107/3227 dead transitions. [2023-08-25 20:07:56,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 3227 transitions, 43381 flow [2023-08-25 20:07:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-08-25 20:07:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-08-25 20:07:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 19801 transitions. [2023-08-25 20:07:56,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34527795215177515 [2023-08-25 20:07:56,746 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 19801 transitions. [2023-08-25 20:07:56,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 19801 transitions. [2023-08-25 20:07:56,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:07:56,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 19801 transitions. [2023-08-25 20:07:56,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 183.34259259259258) internal successors, (19801), 108 states have internal predecessors, (19801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:56,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 531.0) internal successors, (57879), 109 states have internal predecessors, (57879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:56,826 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 531.0) internal successors, (57879), 109 states have internal predecessors, (57879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:07:56,826 INFO L175 Difference]: Start difference. First operand has 288 places, 592 transitions, 7380 flow. Second operand 108 states and 19801 transitions. [2023-08-25 20:07:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 3227 transitions, 43381 flow [2023-08-25 20:08:06,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 3227 transitions, 37982 flow, removed 2690 selfloop flow, removed 8 redundant places. [2023-08-25 20:08:06,764 INFO L231 Difference]: Finished difference. Result has 447 places, 2167 transitions, 33358 flow [2023-08-25 20:08:06,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=33358, PETRI_PLACES=447, PETRI_TRANSITIONS=2167} [2023-08-25 20:08:06,765 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 365 predicate places. [2023-08-25 20:08:06,765 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 2167 transitions, 33358 flow [2023-08-25 20:08:06,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 175.0) internal successors, (7175), 41 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:08:06,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:08:06,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:08:06,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 20:08:06,966 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,SelfDestructingSolverStorable16 [2023-08-25 20:08:06,967 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2023-08-25 20:08:06,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:08:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1073116080, now seen corresponding path program 3 times [2023-08-25 20:08:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:08:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597993375] [2023-08-25 20:08:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:08:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:08:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:08:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:08:08,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:08:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597993375] [2023-08-25 20:08:08,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597993375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:08:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697483427] [2023-08-25 20:08:08,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:08:08,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:08:08,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:08:08,153 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) [2023-08-25 20:08:08,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 20:08:08,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 20:08:08,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:08:08,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-25 20:08:08,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:08:08,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-25 20:08:08,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:08:09,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 20:08:09,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:08:09,657 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 20:08:09,659 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:08:09,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 15 [2023-08-25 20:08:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:08:09,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:08:15,359 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:08:15,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 86 [2023-08-25 20:08:15,393 INFO L322 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2023-08-25 20:08:15,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 246 [2023-08-25 20:08:15,434 INFO L322 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2023-08-25 20:08:15,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 191 [2023-08-25 20:08:15,475 INFO L322 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2023-08-25 20:08:15,476 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 139 [2023-08-25 20:08:15,918 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:08:15,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 86 [2023-08-25 20:08:15,952 INFO L322 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2023-08-25 20:08:15,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 242 [2023-08-25 20:08:15,987 INFO L322 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-08-25 20:08:15,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 187 [2023-08-25 20:08:16,030 INFO L322 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-08-25 20:08:16,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 135 [2023-08-25 20:08:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:08:16,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697483427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:08:16,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:08:16,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 51 [2023-08-25 20:08:16,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671686154] [2023-08-25 20:08:16,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:08:16,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-25 20:08:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:08:16,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-25 20:08:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=2266, Unknown=2, NotChecked=0, Total=2756 [2023-08-25 20:08:16,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 531 [2023-08-25 20:08:16,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 2167 transitions, 33358 flow. Second operand has 53 states, 53 states have (on average 153.73584905660377) internal successors, (8148), 53 states have internal predecessors, (8148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:08:16,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:08:16,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 531 [2023-08-25 20:08:16,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:08:25,108 WARN L234 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 104 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:08:27,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 20:08:35,721 WARN L234 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 87 DAG size of output: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:08:44,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 20:08:46,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 20:09:02,220 WARN L234 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 103 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:09:11,534 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 108 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:09:20,922 WARN L234 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 101 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:09:24,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 20:09:34,423 WARN L234 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 96 DAG size of output: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:09:43,398 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 89 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:09:53,146 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 100 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:01,710 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 103 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:10,215 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 98 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:19,295 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 94 DAG size of output: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:27,749 WARN L234 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 93 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:37,886 WARN L234 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 103 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:46,249 WARN L234 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:10:56,988 WARN L234 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 100 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:05,604 WARN L234 SmtUtils]: Spent 8.51s on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:14,055 WARN L234 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 98 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:23,300 WARN L234 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 96 DAG size of output: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:31,693 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 98 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:41,914 WARN L234 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 100 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:50,638 WARN L234 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 103 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:11:59,225 WARN L234 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 100 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:12:08,389 WARN L234 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 99 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:12:27,042 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 108 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:12:35,905 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 106 DAG size of output: 103 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:12:48,471 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 105 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:12:57,155 WARN L234 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 109 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:13:21,745 WARN L234 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 104 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:13:31,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 20:13:56,953 WARN L234 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 102 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:14:05,536 WARN L234 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 99 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:14:22,420 WARN L234 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 104 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:14:30,906 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 101 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:14:39,425 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 105 DAG size of output: 101 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:14:51,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 20:15:02,049 WARN L234 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 107 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:15:10,559 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 101 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:15:28,558 WARN L234 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 103 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:15:46,906 WARN L234 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 101 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:16:27,980 WARN L234 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 107 DAG size of output: 103 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:16:36,986 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 104 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:17:01,173 WARN L234 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 110 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:17:28,246 WARN L234 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 106 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 20:17:37,257 WARN L234 SmtUtils]: Spent 8.51s on a formula simplification. DAG size of input: 106 DAG size of output: 102 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-25 20:18:02,951 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 20:18:02,951 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 20:18:03,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-25 20:18:04,153 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-25 20:18:04,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown