/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 11:04:47,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 11:04:47,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 11:04:47,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 11:04:47,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 11:04:47,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 11:04:47,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 11:04:47,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 11:04:47,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 11:04:47,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 11:04:47,695 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 11:04:47,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 11:04:47,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 11:04:47,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 11:04:47,698 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 11:04:47,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 11:04:47,698 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 11:04:47,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 11:04:47,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 11:04:47,699 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 11:04:47,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 11:04:47,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:04:47,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 11:04:47,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 11:04:47,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 11:04:47,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 11:04:47,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 11:04:47,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 11:04:47,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 11:04:47,701 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 11:04:47,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 11:04:47,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 11:04:47,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 11:04:47,965 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 11:04:47,966 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 11:04:47,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-26 11:04:48,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 11:04:49,161 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 11:04:49,162 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-26 11:04:49,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add787f53/e06d18a3da3c409ba9373b9f4d606b0f/FLAG8d4924305 [2023-08-26 11:04:49,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add787f53/e06d18a3da3c409ba9373b9f4d606b0f [2023-08-26 11:04:49,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 11:04:49,181 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 11:04:49,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 11:04:49,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 11:04:49,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 11:04:49,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470481a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49, skipping insertion in model container [2023-08-26 11:04:49,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,200 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 11:04:49,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:04:49,367 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 11:04:49,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 11:04:49,413 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 11:04:49,413 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 11:04:49,418 INFO L206 MainTranslator]: Completed translation [2023-08-26 11:04:49,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49 WrapperNode [2023-08-26 11:04:49,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 11:04:49,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 11:04:49,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 11:04:49,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 11:04:49,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,462 INFO L138 Inliner]: procedures = 24, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 156 [2023-08-26 11:04:49,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 11:04:49,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 11:04:49,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 11:04:49,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 11:04:49,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 11:04:49,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 11:04:49,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 11:04:49,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 11:04:49,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (1/1) ... [2023-08-26 11:04:49,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 11:04:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:04:49,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 11:04:49,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 11:04:49,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 11:04:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 11:04:49,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 11:04:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 11:04:49,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 11:04:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 11:04:49,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 11:04:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-26 11:04:49,595 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 11:04:49,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 11:04:49,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 11:04:49,598 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 11:04:49,702 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 11:04:49,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 11:04:50,099 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 11:04:50,212 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 11:04:50,212 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 11:04:50,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:04:50 BoogieIcfgContainer [2023-08-26 11:04:50,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 11:04:50,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 11:04:50,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 11:04:50,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 11:04:50,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:04:49" (1/3) ... [2023-08-26 11:04:50,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b55b94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:04:50, skipping insertion in model container [2023-08-26 11:04:50,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:04:49" (2/3) ... [2023-08-26 11:04:50,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b55b94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:04:50, skipping insertion in model container [2023-08-26 11:04:50,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:04:50" (3/3) ... [2023-08-26 11:04:50,219 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-08-26 11:04:50,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 11:04:50,230 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2023-08-26 11:04:50,230 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 11:04:50,290 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 11:04:50,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 238 transitions, 508 flow [2023-08-26 11:04:50,362 INFO L124 PetriNetUnfolderBase]: 11/234 cut-off events. [2023-08-26 11:04:50,362 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 11:04:50,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 234 events. 11/234 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 265 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2023-08-26 11:04:50,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 238 transitions, 508 flow [2023-08-26 11:04:50,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 221 transitions, 466 flow [2023-08-26 11:04:50,377 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 11:04:50,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 221 transitions, 466 flow [2023-08-26 11:04:50,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 221 transitions, 466 flow [2023-08-26 11:04:50,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 221 transitions, 466 flow [2023-08-26 11:04:50,411 INFO L124 PetriNetUnfolderBase]: 11/221 cut-off events. [2023-08-26 11:04:50,412 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 11:04:50,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 221 events. 11/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 261 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2023-08-26 11:04:50,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 7104 [2023-08-26 11:04:55,909 INFO L134 LiptonReduction]: Checked pairs total: 16324 [2023-08-26 11:04:55,909 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-26 11:04:55,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 11:04:55,934 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;@5d0e056e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 11:04:55,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2023-08-26 11:04:55,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 11:04:55,935 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 11:04:55,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 11:04:55,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:04:55,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 11:04:55,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:04:55,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:04:55,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1102, now seen corresponding path program 1 times [2023-08-26 11:04:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:04:55,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087225712] [2023-08-26 11:04:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:04:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:04:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:04:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:04:56,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:04:56,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087225712] [2023-08-26 11:04:56,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087225712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:04:56,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:04:56,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 11:04:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681477419] [2023-08-26 11:04:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:04:56,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 11:04:56,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:04:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 11:04:56,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 11:04:56,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 471 [2023-08-26 11:04:56,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:04:56,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 471 [2023-08-26 11:04:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:04:56,385 INFO L124 PetriNetUnfolderBase]: 2705/3556 cut-off events. [2023-08-26 11:04:56,385 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2023-08-26 11:04:56,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7373 conditions, 3556 events. 2705/3556 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12290 event pairs, 1965 based on Foata normal form. 0/2816 useless extension candidates. Maximal degree in co-relation 6024. Up to 3557 conditions per place. [2023-08-26 11:04:56,401 INFO L140 encePairwiseOnDemand]: 424/471 looper letters, 33 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-26 11:04:56,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 156 flow [2023-08-26 11:04:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 11:04:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 11:04:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 438 transitions. [2023-08-26 11:04:56,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46496815286624205 [2023-08-26 11:04:56,416 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 438 transitions. [2023-08-26 11:04:56,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 438 transitions. [2023-08-26 11:04:56,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:04:56,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 438 transitions. [2023-08-26 11:04:56,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:56,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:56,428 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:56,429 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 184 flow. Second operand 2 states and 438 transitions. [2023-08-26 11:04:56,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 156 flow [2023-08-26 11:04:56,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 140 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-26 11:04:56,435 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2023-08-26 11:04:56,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-26 11:04:56,438 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -54 predicate places. [2023-08-26 11:04:56,438 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2023-08-26 11:04:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:56,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:04:56,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:04:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 11:04:56,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:04:56,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:04:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1646407154, now seen corresponding path program 1 times [2023-08-26 11:04:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:04:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200286609] [2023-08-26 11:04:56,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:04:56,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:04:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:04:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:04:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:04:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200286609] [2023-08-26 11:04:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200286609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:04:56,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:04:56,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 11:04:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622587555] [2023-08-26 11:04:56,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:04:56,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 11:04:56,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:04:56,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 11:04:56,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 11:04:56,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 471 [2023-08-26 11:04:56,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:56,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:04:56,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 471 [2023-08-26 11:04:56,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:04:57,089 INFO L124 PetriNetUnfolderBase]: 3661/4823 cut-off events. [2023-08-26 11:04:57,090 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-26 11:04:57,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9770 conditions, 4823 events. 3661/4823 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18770 event pairs, 656 based on Foata normal form. 1/3732 useless extension candidates. Maximal degree in co-relation 9767. Up to 3880 conditions per place. [2023-08-26 11:04:57,106 INFO L140 encePairwiseOnDemand]: 465/471 looper letters, 53 selfloop transitions, 5 changer transitions 1/59 dead transitions. [2023-08-26 11:04:57,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 59 transitions, 251 flow [2023-08-26 11:04:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 11:04:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 11:04:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-08-26 11:04:57,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40976645435244163 [2023-08-26 11:04:57,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-08-26 11:04:57,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-08-26 11:04:57,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:04:57,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-08-26 11:04:57,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 471.0) internal successors, (1884), 4 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,113 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 579 transitions. [2023-08-26 11:04:57,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 59 transitions, 251 flow [2023-08-26 11:04:57,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 59 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:04:57,114 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 107 flow [2023-08-26 11:04:57,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-08-26 11:04:57,115 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -51 predicate places. [2023-08-26 11:04:57,115 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 107 flow [2023-08-26 11:04:57,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:04:57,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:04:57,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 11:04:57,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:04:57,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:04:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1295145395, now seen corresponding path program 1 times [2023-08-26 11:04:57,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:04:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048702200] [2023-08-26 11:04:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:04:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:04:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:04:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:04:57,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:04:57,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048702200] [2023-08-26 11:04:57,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048702200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:04:57,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:04:57,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:04:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27642543] [2023-08-26 11:04:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:04:57,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 11:04:57,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:04:57,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 11:04:57,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 11:04:57,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 471 [2023-08-26 11:04:57,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:04:57,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 471 [2023-08-26 11:04:57,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:04:57,872 INFO L124 PetriNetUnfolderBase]: 5989/7980 cut-off events. [2023-08-26 11:04:57,872 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2023-08-26 11:04:57,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18514 conditions, 7980 events. 5989/7980 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 34495 event pairs, 1535 based on Foata normal form. 186/8166 useless extension candidates. Maximal degree in co-relation 18509. Up to 3409 conditions per place. [2023-08-26 11:04:57,899 INFO L140 encePairwiseOnDemand]: 463/471 looper letters, 120 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2023-08-26 11:04:57,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 137 transitions, 665 flow [2023-08-26 11:04:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 11:04:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 11:04:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1155 transitions. [2023-08-26 11:04:57,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40870488322717624 [2023-08-26 11:04:57,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1155 transitions. [2023-08-26 11:04:57,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1155 transitions. [2023-08-26 11:04:57,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:04:57,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1155 transitions. [2023-08-26 11:04:57,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.5) internal successors, (1155), 6 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 471.0) internal successors, (3297), 7 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 471.0) internal successors, (3297), 7 states have internal predecessors, (3297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,908 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 107 flow. Second operand 6 states and 1155 transitions. [2023-08-26 11:04:57,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 137 transitions, 665 flow [2023-08-26 11:04:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 137 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 11:04:57,910 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 223 flow [2023-08-26 11:04:57,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-08-26 11:04:57,911 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -44 predicate places. [2023-08-26 11:04:57,911 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 223 flow [2023-08-26 11:04:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:57,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:04:57,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:04:57,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 11:04:57,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:04:57,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:04:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1622642949, now seen corresponding path program 2 times [2023-08-26 11:04:57,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:04:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62581927] [2023-08-26 11:04:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:04:57,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:04:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:04:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:04:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:04:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62581927] [2023-08-26 11:04:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62581927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:04:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:04:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:04:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509646267] [2023-08-26 11:04:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:04:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:04:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:04:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:04:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:04:58,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 471 [2023-08-26 11:04:58,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 174.5) internal successors, (1047), 6 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:58,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:04:58,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 471 [2023-08-26 11:04:58,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:04:59,373 INFO L124 PetriNetUnfolderBase]: 11835/15870 cut-off events. [2023-08-26 11:04:59,373 INFO L125 PetriNetUnfolderBase]: For 14169/14169 co-relation queries the response was YES. [2023-08-26 11:04:59,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45480 conditions, 15870 events. 11835/15870 cut-off events. For 14169/14169 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 77841 event pairs, 1343 based on Foata normal form. 296/16166 useless extension candidates. Maximal degree in co-relation 45472. Up to 7173 conditions per place. [2023-08-26 11:04:59,445 INFO L140 encePairwiseOnDemand]: 462/471 looper letters, 180 selfloop transitions, 43 changer transitions 0/223 dead transitions. [2023-08-26 11:04:59,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 223 transitions, 1353 flow [2023-08-26 11:04:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 11:04:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 11:04:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1537 transitions. [2023-08-26 11:04:59,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40790870488322717 [2023-08-26 11:04:59,450 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1537 transitions. [2023-08-26 11:04:59,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1537 transitions. [2023-08-26 11:04:59,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:04:59,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1537 transitions. [2023-08-26 11:04:59,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 192.125) internal successors, (1537), 8 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:59,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 471.0) internal successors, (4239), 9 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:59,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 471.0) internal successors, (4239), 9 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:59,460 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 223 flow. Second operand 8 states and 1537 transitions. [2023-08-26 11:04:59,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 223 transitions, 1353 flow [2023-08-26 11:04:59,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 223 transitions, 1353 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 11:04:59,488 INFO L231 Difference]: Finished difference. Result has 58 places, 87 transitions, 614 flow [2023-08-26 11:04:59,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=58, PETRI_TRANSITIONS=87} [2023-08-26 11:04:59,489 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -31 predicate places. [2023-08-26 11:04:59,489 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 87 transitions, 614 flow [2023-08-26 11:04:59,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.5) internal successors, (1047), 6 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:04:59,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:04:59,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:04:59,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 11:04:59,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:04:59,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:04:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash -404584082, now seen corresponding path program 1 times [2023-08-26 11:04:59,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:04:59,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199375826] [2023-08-26 11:04:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:04:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:04:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:04:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:04:59,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:04:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199375826] [2023-08-26 11:04:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199375826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:04:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057188990] [2023-08-26 11:04:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:04:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:04:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:04:59,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 11:04:59,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 11:04:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:04:59,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-26 11:04:59,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:04:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:05:00,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:05:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:05:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057188990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:05:00,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:05:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2023-08-26 11:05:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966114041] [2023-08-26 11:05:00,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:05:00,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 11:05:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:05:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 11:05:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-26 11:05:00,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 471 [2023-08-26 11:05:00,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 87 transitions, 614 flow. Second operand has 16 states, 16 states have (on average 171.5) internal successors, (2744), 16 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:00,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:05:00,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 471 [2023-08-26 11:05:00,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:05:09,440 INFO L124 PetriNetUnfolderBase]: 58688/78597 cut-off events. [2023-08-26 11:05:09,440 INFO L125 PetriNetUnfolderBase]: For 186160/186160 co-relation queries the response was YES. [2023-08-26 11:05:09,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293024 conditions, 78597 events. 58688/78597 cut-off events. For 186160/186160 co-relation queries the response was YES. Maximal size of possible extension queue 2579. Compared 467881 event pairs, 1296 based on Foata normal form. 5710/84307 useless extension candidates. Maximal degree in co-relation 293009. Up to 25379 conditions per place. [2023-08-26 11:05:09,989 INFO L140 encePairwiseOnDemand]: 457/471 looper letters, 1094 selfloop transitions, 938 changer transitions 0/2032 dead transitions. [2023-08-26 11:05:09,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 2032 transitions, 16997 flow [2023-08-26 11:05:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-26 11:05:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-26 11:05:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 11872 transitions. [2023-08-26 11:05:10,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39384288747346075 [2023-08-26 11:05:10,015 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 11872 transitions. [2023-08-26 11:05:10,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 11872 transitions. [2023-08-26 11:05:10,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:05:10,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 11872 transitions. [2023-08-26 11:05:10,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 185.5) internal successors, (11872), 64 states have internal predecessors, (11872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:10,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 471.0) internal successors, (30615), 65 states have internal predecessors, (30615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:10,084 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 471.0) internal successors, (30615), 65 states have internal predecessors, (30615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:10,084 INFO L175 Difference]: Start difference. First operand has 58 places, 87 transitions, 614 flow. Second operand 64 states and 11872 transitions. [2023-08-26 11:05:10,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 2032 transitions, 16997 flow [2023-08-26 11:05:10,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 2032 transitions, 16679 flow, removed 159 selfloop flow, removed 0 redundant places. [2023-08-26 11:05:10,895 INFO L231 Difference]: Finished difference. Result has 170 places, 1129 transitions, 12175 flow [2023-08-26 11:05:10,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=12175, PETRI_PLACES=170, PETRI_TRANSITIONS=1129} [2023-08-26 11:05:10,896 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 81 predicate places. [2023-08-26 11:05:10,896 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 1129 transitions, 12175 flow [2023-08-26 11:05:10,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 171.5) internal successors, (2744), 16 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:10,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:05:10,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:05:10,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 11:05:11,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:05:11,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:05:11,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:05:11,103 INFO L85 PathProgramCache]: Analyzing trace with hash -836027397, now seen corresponding path program 3 times [2023-08-26 11:05:11,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:05:11,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666523575] [2023-08-26 11:05:11,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:05:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:05:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:05:11,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:05:11,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:05:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666523575] [2023-08-26 11:05:11,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666523575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:05:11,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956555912] [2023-08-26 11:05:11,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 11:05:11,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:05:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:05:11,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 11:05:11,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 11:05:11,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 11:05:11,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:05:11,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 11:05:11,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:05:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:05:12,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:05:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:05:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956555912] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:05:12,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:05:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-26 11:05:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778218951] [2023-08-26 11:05:12,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:05:12,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 11:05:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:05:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 11:05:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-26 11:05:12,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 471 [2023-08-26 11:05:12,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 1129 transitions, 12175 flow. Second operand has 15 states, 15 states have (on average 166.73333333333332) internal successors, (2501), 15 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:12,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:05:12,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 471 [2023-08-26 11:05:12,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:05:43,028 INFO L124 PetriNetUnfolderBase]: 112633/152802 cut-off events. [2023-08-26 11:05:43,029 INFO L125 PetriNetUnfolderBase]: For 6871530/6871530 co-relation queries the response was YES. [2023-08-26 11:05:44,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118125 conditions, 152802 events. 112633/152802 cut-off events. For 6871530/6871530 co-relation queries the response was YES. Maximal size of possible extension queue 5108. Compared 1014111 event pairs, 4258 based on Foata normal form. 5152/157954 useless extension candidates. Maximal degree in co-relation 1118060. Up to 48778 conditions per place. [2023-08-26 11:05:45,560 INFO L140 encePairwiseOnDemand]: 457/471 looper letters, 1782 selfloop transitions, 1971 changer transitions 2/3755 dead transitions. [2023-08-26 11:05:45,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 3755 transitions, 46267 flow [2023-08-26 11:05:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 11:05:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 11:05:45,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4361 transitions. [2023-08-26 11:05:45,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857926397735315 [2023-08-26 11:05:45,568 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4361 transitions. [2023-08-26 11:05:45,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4361 transitions. [2023-08-26 11:05:45,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:05:45,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4361 transitions. [2023-08-26 11:05:45,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 181.70833333333334) internal successors, (4361), 24 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:45,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 471.0) internal successors, (11775), 25 states have internal predecessors, (11775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:45,583 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 471.0) internal successors, (11775), 25 states have internal predecessors, (11775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:05:45,583 INFO L175 Difference]: Start difference. First operand has 170 places, 1129 transitions, 12175 flow. Second operand 24 states and 4361 transitions. [2023-08-26 11:05:45,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 3755 transitions, 46267 flow [2023-08-26 11:07:06,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 3755 transitions, 43687 flow, removed 1290 selfloop flow, removed 0 redundant places. [2023-08-26 11:07:06,051 INFO L231 Difference]: Finished difference. Result has 210 places, 2440 transitions, 32377 flow [2023-08-26 11:07:06,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=11319, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=724, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=32377, PETRI_PLACES=210, PETRI_TRANSITIONS=2440} [2023-08-26 11:07:06,052 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 121 predicate places. [2023-08-26 11:07:06,052 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 2440 transitions, 32377 flow [2023-08-26 11:07:06,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 166.73333333333332) internal successors, (2501), 15 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:07:06,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:07:06,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:07:06,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 11:07:06,258 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,SelfDestructingSolverStorable5 [2023-08-26 11:07:06,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:07:06,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:07:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash -539177567, now seen corresponding path program 4 times [2023-08-26 11:07:06,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:07:06,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137475128] [2023-08-26 11:07:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:07:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:07:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:07:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:07:06,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:07:06,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137475128] [2023-08-26 11:07:06,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137475128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:07:06,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:07:06,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:07:06,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766305236] [2023-08-26 11:07:06,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:07:06,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:07:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:07:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:07:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:07:06,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 471 [2023-08-26 11:07:06,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 2440 transitions, 32377 flow. Second operand has 6 states, 6 states have (on average 174.5) internal successors, (1047), 6 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:07:06,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:07:06,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 471 [2023-08-26 11:07:06,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:08:01,388 INFO L124 PetriNetUnfolderBase]: 124885/173030 cut-off events. [2023-08-26 11:08:01,389 INFO L125 PetriNetUnfolderBase]: For 7966914/7966914 co-relation queries the response was YES. [2023-08-26 11:08:04,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415498 conditions, 173030 events. 124885/173030 cut-off events. For 7966914/7966914 co-relation queries the response was YES. Maximal size of possible extension queue 5930. Compared 1224227 event pairs, 15374 based on Foata normal form. 1232/174262 useless extension candidates. Maximal degree in co-relation 1415416. Up to 94691 conditions per place. [2023-08-26 11:08:05,184 INFO L140 encePairwiseOnDemand]: 463/471 looper letters, 2548 selfloop transitions, 1516 changer transitions 0/4064 dead transitions. [2023-08-26 11:08:05,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 4064 transitions, 61458 flow [2023-08-26 11:08:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 11:08:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 11:08:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1512 transitions. [2023-08-26 11:08:05,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012738853503185 [2023-08-26 11:08:05,187 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1512 transitions. [2023-08-26 11:08:05,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1512 transitions. [2023-08-26 11:08:05,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:08:05,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1512 transitions. [2023-08-26 11:08:05,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:08:05,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 471.0) internal successors, (4239), 9 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:08:05,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 471.0) internal successors, (4239), 9 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:08:05,210 INFO L175 Difference]: Start difference. First operand has 210 places, 2440 transitions, 32377 flow. Second operand 8 states and 1512 transitions. [2023-08-26 11:08:05,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 4064 transitions, 61458 flow [2023-08-26 11:11:55,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 4064 transitions, 59067 flow, removed 746 selfloop flow, removed 3 redundant places. [2023-08-26 11:11:55,397 INFO L231 Difference]: Finished difference. Result has 220 places, 2874 transitions, 41769 flow [2023-08-26 11:11:55,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=30928, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41769, PETRI_PLACES=220, PETRI_TRANSITIONS=2874} [2023-08-26 11:11:55,399 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 131 predicate places. [2023-08-26 11:11:55,399 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 2874 transitions, 41769 flow [2023-08-26 11:11:55,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.5) internal successors, (1047), 6 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:11:55,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:11:55,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:11:55,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 11:11:55,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 80 more)] === [2023-08-26 11:11:55,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:11:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash 22303644, now seen corresponding path program 1 times [2023-08-26 11:11:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:11:55,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992461297] [2023-08-26 11:11:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:11:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:11:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:11:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:11:55,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:11:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992461297] [2023-08-26 11:11:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992461297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 11:11:55,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 11:11:55,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 11:11:55,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471202238] [2023-08-26 11:11:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 11:11:55,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 11:11:55,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:11:55,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 11:11:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 11:11:55,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 471 [2023-08-26 11:11:55,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 2874 transitions, 41769 flow. Second operand has 6 states, 6 states have (on average 174.5) internal successors, (1047), 6 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:11:55,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:11:55,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 471 [2023-08-26 11:11:55,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand