/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:12:36,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:12:36,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 10:12:36,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:12:36,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:12:36,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:12:36,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:12:36,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:12:36,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:12:36,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:12:36,675 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:12:36,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:12:36,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:12:36,676 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:12:36,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:12:36,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:12:36,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:12:36,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:12:36,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:12:36,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:12:36,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:12:36,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:12:36,679 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:12:36,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:12:36,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:12:36,680 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:12:36,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:12:36,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:12:36,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:12:36,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:12:36,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:12:36,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:12:36,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:12:36,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:12:36,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:12:36,682 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:12:36,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:12:37,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:12:37,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:12:37,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:12:37,012 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:12:37,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-08-26 10:12:38,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:12:38,466 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:12:38,466 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-08-26 10:12:38,477 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c717255/8310a47daf754f7b8ddaab8b12c71f32/FLAG7b5dfdc52 [2023-08-26 10:12:38,493 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c717255/8310a47daf754f7b8ddaab8b12c71f32 [2023-08-26 10:12:38,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:12:38,499 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:12:38,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:12:38,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:12:38,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:12:38,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18102c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38, skipping insertion in model container [2023-08-26 10:12:38,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,530 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:12:38,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:12:38,745 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:12:38,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:12:38,797 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:12:38,797 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:12:38,803 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:12:38,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38 WrapperNode [2023-08-26 10:12:38,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:12:38,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:12:38,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:12:38,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:12:38,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,861 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 168 [2023-08-26 10:12:38,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:12:38,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:12:38,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:12:38,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:12:38,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:12:38,902 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:12:38,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:12:38,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:12:38,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (1/1) ... [2023-08-26 10:12:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:12:38,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:12:38,935 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 10:12:38,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 10:12:38,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:12:38,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:12:38,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:12:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:12:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:12:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 10:12:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 10:12:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:12:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:12:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:12:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 10:12:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 10:12:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 10:12:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:12:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:12:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:12:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:12:38,980 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 10:12:39,070 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:12:39,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:12:39,534 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:12:39,685 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:12:39,685 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 10:12:39,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:12:39 BoogieIcfgContainer [2023-08-26 10:12:39,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:12:39,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:12:39,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:12:39,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:12:39,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:12:38" (1/3) ... [2023-08-26 10:12:39,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767440f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:12:39, skipping insertion in model container [2023-08-26 10:12:39,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:38" (2/3) ... [2023-08-26 10:12:39,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767440f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:12:39, skipping insertion in model container [2023-08-26 10:12:39,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:12:39" (3/3) ... [2023-08-26 10:12:39,696 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-08-26 10:12:39,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:12:39,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2023-08-26 10:12:39,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:12:39,818 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 10:12:39,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 258 transitions, 540 flow [2023-08-26 10:12:39,933 INFO L124 PetriNetUnfolderBase]: 14/255 cut-off events. [2023-08-26 10:12:39,934 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 10:12:39,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 255 events. 14/255 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 310 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-26 10:12:39,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 258 transitions, 540 flow [2023-08-26 10:12:39,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 244 transitions, 506 flow [2023-08-26 10:12:39,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:12:39,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 244 transitions, 506 flow [2023-08-26 10:12:39,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 244 transitions, 506 flow [2023-08-26 10:12:39,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 244 transitions, 506 flow [2023-08-26 10:12:40,001 INFO L124 PetriNetUnfolderBase]: 14/244 cut-off events. [2023-08-26 10:12:40,002 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 10:12:40,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 244 events. 14/244 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 317 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 167. Up to 2 conditions per place. [2023-08-26 10:12:40,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 5682 [2023-08-26 10:12:50,058 INFO L134 LiptonReduction]: Checked pairs total: 35801 [2023-08-26 10:12:50,059 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-26 10:12:50,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:12:50,088 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;@65acbf3b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:12:50,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-08-26 10:12:50,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:12:50,089 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:12:50,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:12:50,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:50,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:12:50,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:50,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1123, now seen corresponding path program 1 times [2023-08-26 10:12:50,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:50,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140455092] [2023-08-26 10:12:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:50,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140455092] [2023-08-26 10:12:50,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140455092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:50,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:50,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:12:50,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685565809] [2023-08-26 10:12:50,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:50,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:12:50,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:12:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:12:50,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 504 [2023-08-26 10:12:50,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:50,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 504 [2023-08-26 10:12:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:50,423 INFO L124 PetriNetUnfolderBase]: 333/800 cut-off events. [2023-08-26 10:12:50,423 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 10:12:50,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1313 conditions, 800 events. 333/800 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4765 event pairs, 176 based on Foata normal form. 152/765 useless extension candidates. Maximal degree in co-relation 1077. Up to 462 conditions per place. [2023-08-26 10:12:50,433 INFO L140 encePairwiseOnDemand]: 470/504 looper letters, 23 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-08-26 10:12:50,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 164 flow [2023-08-26 10:12:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:12:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:12:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2023-08-26 10:12:50,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-08-26 10:12:50,451 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2023-08-26 10:12:50,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2023-08-26 10:12:50,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:50,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2023-08-26 10:12:50,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 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 10:12:50,466 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 504.0) internal successors, (1512), 3 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 10:12:50,468 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 186 flow. Second operand 2 states and 501 transitions. [2023-08-26 10:12:50,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 164 flow [2023-08-26 10:12:50,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 152 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 10:12:50,474 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 106 flow [2023-08-26 10:12:50,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-26 10:12:50,478 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -36 predicate places. [2023-08-26 10:12:50,478 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 106 flow [2023-08-26 10:12:50,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 222.5) internal successors, (445), 2 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:50,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 10:12:50,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:12:50,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:50,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash -934467705, now seen corresponding path program 1 times [2023-08-26 10:12:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:50,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119958154] [2023-08-26 10:12:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:50,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:50,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119958154] [2023-08-26 10:12:50,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119958154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:50,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:50,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:12:50,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30624144] [2023-08-26 10:12:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:12:50,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:50,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:12:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:12:50,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 504 [2023-08-26 10:12:50,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:50,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 504 [2023-08-26 10:12:50,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:50,866 INFO L124 PetriNetUnfolderBase]: 579/1111 cut-off events. [2023-08-26 10:12:50,867 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-26 10:12:50,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 1111 events. 579/1111 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6108 event pairs, 364 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1942. Up to 810 conditions per place. [2023-08-26 10:12:50,874 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 25 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-26 10:12:50,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 154 flow [2023-08-26 10:12:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:12:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:12:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-26 10:12:50,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42923280423280424 [2023-08-26 10:12:50,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-26 10:12:50,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-26 10:12:50,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:50,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-26 10:12:50,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,885 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 106 flow. Second operand 3 states and 649 transitions. [2023-08-26 10:12:50,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 154 flow [2023-08-26 10:12:50,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:12:50,887 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 104 flow [2023-08-26 10:12:50,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-26 10:12:50,888 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -36 predicate places. [2023-08-26 10:12:50,889 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 104 flow [2023-08-26 10:12:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:50,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:50,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:12:50,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:50,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -146165585, now seen corresponding path program 1 times [2023-08-26 10:12:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:50,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138428980] [2023-08-26 10:12:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:50,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138428980] [2023-08-26 10:12:50,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138428980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:50,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:12:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607638385] [2023-08-26 10:12:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:12:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:50,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:12:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:12:50,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 504 [2023-08-26 10:12:50,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:50,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:50,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 504 [2023-08-26 10:12:50,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:51,151 INFO L124 PetriNetUnfolderBase]: 622/1120 cut-off events. [2023-08-26 10:12:51,151 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-26 10:12:51,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 1120 events. 622/1120 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5556 event pairs, 418 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 2024. Up to 876 conditions per place. [2023-08-26 10:12:51,159 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 25 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-26 10:12:51,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 152 flow [2023-08-26 10:12:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:12:51,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:12:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-26 10:12:51,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42923280423280424 [2023-08-26 10:12:51,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-26 10:12:51,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-26 10:12:51,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:51,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-26 10:12:51,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,167 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 104 flow. Second operand 3 states and 649 transitions. [2023-08-26 10:12:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 152 flow [2023-08-26 10:12:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:12:51,168 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 101 flow [2023-08-26 10:12:51,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-26 10:12:51,169 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -37 predicate places. [2023-08-26 10:12:51,169 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 101 flow [2023-08-26 10:12:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:51,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:51,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:12:51,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:51,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1675762515, now seen corresponding path program 1 times [2023-08-26 10:12:51,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:51,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681304968] [2023-08-26 10:12:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:51,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:51,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:51,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681304968] [2023-08-26 10:12:51,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681304968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:51,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:51,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:12:51,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366786931] [2023-08-26 10:12:51,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:51,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:12:51,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:51,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:12:51,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:12:51,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 504 [2023-08-26 10:12:51,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:51,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 504 [2023-08-26 10:12:51,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:51,469 INFO L124 PetriNetUnfolderBase]: 333/763 cut-off events. [2023-08-26 10:12:51,469 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 10:12:51,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 763 events. 333/763 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4356 event pairs, 176 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 1244. Up to 462 conditions per place. [2023-08-26 10:12:51,474 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 22 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-26 10:12:51,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 151 flow [2023-08-26 10:12:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:12:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:12:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-26 10:12:51,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054232804232804 [2023-08-26 10:12:51,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-26 10:12:51,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-26 10:12:51,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:51,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-26 10:12:51,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,483 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 101 flow. Second operand 3 states and 613 transitions. [2023-08-26 10:12:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 151 flow [2023-08-26 10:12:51,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:12:51,485 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 112 flow [2023-08-26 10:12:51,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-26 10:12:51,487 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -35 predicate places. [2023-08-26 10:12:51,487 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 112 flow [2023-08-26 10:12:51,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:51,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:51,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 10:12:51,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:51,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 326515521, now seen corresponding path program 1 times [2023-08-26 10:12:51,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471644239] [2023-08-26 10:12:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:12:51,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471644239] [2023-08-26 10:12:51,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471644239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:51,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:51,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:12:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890901446] [2023-08-26 10:12:51,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:12:51,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:12:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:12:51,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-26 10:12:51,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:51,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:51,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-26 10:12:51,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:52,355 INFO L124 PetriNetUnfolderBase]: 969/1403 cut-off events. [2023-08-26 10:12:52,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:12:52,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1403 events. 969/1403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6321 event pairs, 81 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 2729. Up to 584 conditions per place. [2023-08-26 10:12:52,363 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 66 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-26 10:12:52,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 314 flow [2023-08-26 10:12:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:12:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:12:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1222 transitions. [2023-08-26 10:12:52,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041005291005291 [2023-08-26 10:12:52,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1222 transitions. [2023-08-26 10:12:52,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1222 transitions. [2023-08-26 10:12:52,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:52,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1222 transitions. [2023-08-26 10:12:52,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,376 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 112 flow. Second operand 6 states and 1222 transitions. [2023-08-26 10:12:52,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 314 flow [2023-08-26 10:12:52,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 310 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 10:12:52,380 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 114 flow [2023-08-26 10:12:52,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-26 10:12:52,382 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -32 predicate places. [2023-08-26 10:12:52,382 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 114 flow [2023-08-26 10:12:52,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.16666666666666) internal successors, (1165), 6 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:52,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 10:12:52,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:52,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 694925780, now seen corresponding path program 1 times [2023-08-26 10:12:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626317938] [2023-08-26 10:12:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:52,526 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 10:12:52,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626317938] [2023-08-26 10:12:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626317938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:12:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679497551] [2023-08-26 10:12:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:52,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:12:52,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:12:52,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:12:52,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 10:12:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:52,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 10:12:52,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:12:52,731 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 10:12:52,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:12:52,767 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 10:12:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679497551] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:12:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:12:52,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-26 10:12:52,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929829863] [2023-08-26 10:12:52,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:52,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:12:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:12:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 10:12:52,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-26 10:12:52,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:52,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-26 10:12:52,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:52,914 INFO L124 PetriNetUnfolderBase]: 376/760 cut-off events. [2023-08-26 10:12:52,914 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-26 10:12:52,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 760 events. 376/760 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3760 event pairs, 101 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1426. Up to 321 conditions per place. [2023-08-26 10:12:52,920 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 31 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-08-26 10:12:52,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 212 flow [2023-08-26 10:12:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:12:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:12:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2023-08-26 10:12:52,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956349206349206 [2023-08-26 10:12:52,923 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2023-08-26 10:12:52,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2023-08-26 10:12:52,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:52,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2023-08-26 10:12:52,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,930 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 114 flow. Second operand 5 states and 997 transitions. [2023-08-26 10:12:52,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 212 flow [2023-08-26 10:12:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 203 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:12:52,932 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 130 flow [2023-08-26 10:12:52,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-08-26 10:12:52,933 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -30 predicate places. [2023-08-26 10:12:52,933 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 130 flow [2023-08-26 10:12:52,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:52,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:52,934 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:52,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 10:12:53,140 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,SelfDestructingSolverStorable5 [2023-08-26 10:12:53,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:53,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:53,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1802651719, now seen corresponding path program 1 times [2023-08-26 10:12:53,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:53,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059179063] [2023-08-26 10:12:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:53,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:12:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:53,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059179063] [2023-08-26 10:12:53,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059179063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:53,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:12:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166307442] [2023-08-26 10:12:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:12:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:53,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:12:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:12:53,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-26 10:12:53,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 130 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) [2023-08-26 10:12:53,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:53,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-26 10:12:53,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:53,803 INFO L124 PetriNetUnfolderBase]: 891/1274 cut-off events. [2023-08-26 10:12:53,803 INFO L125 PetriNetUnfolderBase]: For 490/608 co-relation queries the response was YES. [2023-08-26 10:12:53,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 1274 events. 891/1274 cut-off events. For 490/608 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5712 event pairs, 463 based on Foata normal form. 118/1313 useless extension candidates. Maximal degree in co-relation 2922. Up to 1024 conditions per place. [2023-08-26 10:12:53,810 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 54 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-08-26 10:12:53,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 284 flow [2023-08-26 10:12:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:12:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:12:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1209 transitions. [2023-08-26 10:12:53,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998015873015873 [2023-08-26 10:12:53,814 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1209 transitions. [2023-08-26 10:12:53,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1209 transitions. [2023-08-26 10:12:53,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:53,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1209 transitions. [2023-08-26 10:12:53,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.5) internal successors, (1209), 6 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:53,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:53,821 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:53,821 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 130 flow. Second operand 6 states and 1209 transitions. [2023-08-26 10:12:53,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 284 flow [2023-08-26 10:12:53,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 10:12:53,824 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 130 flow [2023-08-26 10:12:53,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-08-26 10:12:53,825 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2023-08-26 10:12:53,825 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 130 flow [2023-08-26 10:12:53,826 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) [2023-08-26 10:12:53,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:53,826 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:53,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 10:12:53,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:53,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -301735466, now seen corresponding path program 1 times [2023-08-26 10:12:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:53,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601977316] [2023-08-26 10:12:53,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:12:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:54,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601977316] [2023-08-26 10:12:54,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601977316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:54,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:54,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:12:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871885273] [2023-08-26 10:12:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:12:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:12:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:12:54,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 504 [2023-08-26 10:12:54,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:54,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 504 [2023-08-26 10:12:54,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:54,616 INFO L124 PetriNetUnfolderBase]: 888/1268 cut-off events. [2023-08-26 10:12:54,616 INFO L125 PetriNetUnfolderBase]: For 370/488 co-relation queries the response was YES. [2023-08-26 10:12:54,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 1268 events. 888/1268 cut-off events. For 370/488 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5691 event pairs, 525 based on Foata normal form. 118/1310 useless extension candidates. Maximal degree in co-relation 2882. Up to 1180 conditions per place. [2023-08-26 10:12:54,623 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 45 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-26 10:12:54,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 57 transitions, 250 flow [2023-08-26 10:12:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:12:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:12:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1200 transitions. [2023-08-26 10:12:54,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-08-26 10:12:54,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1200 transitions. [2023-08-26 10:12:54,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1200 transitions. [2023-08-26 10:12:54,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:54,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1200 transitions. [2023-08-26 10:12:54,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,637 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,638 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 130 flow. Second operand 6 states and 1200 transitions. [2023-08-26 10:12:54,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 57 transitions, 250 flow [2023-08-26 10:12:54,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 243 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:12:54,640 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 129 flow [2023-08-26 10:12:54,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-08-26 10:12:54,640 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2023-08-26 10:12:54,640 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 129 flow [2023-08-26 10:12:54,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.83333333333334) internal successors, (1181), 6 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:54,641 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:54,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 10:12:54,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:54,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:54,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1893252660, now seen corresponding path program 1 times [2023-08-26 10:12:54,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894870004] [2023-08-26 10:12:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:54,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:54,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:12:54,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894870004] [2023-08-26 10:12:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894870004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:12:54,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:12:54,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:12:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721227930] [2023-08-26 10:12:54,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:12:54,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:12:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:12:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:12:54,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 504 [2023-08-26 10:12:54,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:54,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 504 [2023-08-26 10:12:54,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:54,903 INFO L124 PetriNetUnfolderBase]: 396/872 cut-off events. [2023-08-26 10:12:54,904 INFO L125 PetriNetUnfolderBase]: For 208/266 co-relation queries the response was YES. [2023-08-26 10:12:54,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 872 events. 396/872 cut-off events. For 208/266 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4827 event pairs, 179 based on Foata normal form. 90/898 useless extension candidates. Maximal degree in co-relation 1670. Up to 440 conditions per place. [2023-08-26 10:12:54,908 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 34 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-26 10:12:54,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 241 flow [2023-08-26 10:12:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:12:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:12:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-08-26 10:12:54,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2023-08-26 10:12:54,911 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-08-26 10:12:54,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-08-26 10:12:54,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:54,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-08-26 10:12:54,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,918 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 129 flow. Second operand 4 states and 855 transitions. [2023-08-26 10:12:54,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 241 flow [2023-08-26 10:12:54,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:12:54,919 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 136 flow [2023-08-26 10:12:54,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2023-08-26 10:12:54,921 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -29 predicate places. [2023-08-26 10:12:54,922 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 136 flow [2023-08-26 10:12:54,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:54,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:54,923 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:54,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 10:12:54,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:54,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:54,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1898214015, now seen corresponding path program 1 times [2023-08-26 10:12:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175071450] [2023-08-26 10:12:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:55,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:55,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175071450] [2023-08-26 10:12:55,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175071450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:12:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877068768] [2023-08-26 10:12:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:12:55,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:12:55,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:12:55,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 10:12:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:56,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 10:12:56,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:12:56,321 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 [2023-08-26 10:12:56,331 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 [2023-08-26 10:12:56,566 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2023-08-26 10:12:56,573 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:12:56,579 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:12:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:56,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:12:57,411 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:12:57,411 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 155 treesize of output 99 [2023-08-26 10:12:57,423 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:12:57,423 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:12:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877068768] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:12:57,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:12:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-26 10:12:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604022117] [2023-08-26 10:12:57,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:12:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 10:12:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:12:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 10:12:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-26 10:12:57,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 504 [2023-08-26 10:12:57,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 136 flow. Second operand has 19 states, 19 states have (on average 166.05263157894737) internal successors, (3155), 19 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:57,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:12:57,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 504 [2023-08-26 10:12:57,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:12:58,697 INFO L124 PetriNetUnfolderBase]: 846/1682 cut-off events. [2023-08-26 10:12:58,697 INFO L125 PetriNetUnfolderBase]: For 950/950 co-relation queries the response was YES. [2023-08-26 10:12:58,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 1682 events. 846/1682 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10419 event pairs, 66 based on Foata normal form. 1/1647 useless extension candidates. Maximal degree in co-relation 3764. Up to 800 conditions per place. [2023-08-26 10:12:58,709 INFO L140 encePairwiseOnDemand]: 493/504 looper letters, 77 selfloop transitions, 25 changer transitions 1/122 dead transitions. [2023-08-26 10:12:58,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 588 flow [2023-08-26 10:12:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:12:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:12:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1732 transitions. [2023-08-26 10:12:58,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34365079365079365 [2023-08-26 10:12:58,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1732 transitions. [2023-08-26 10:12:58,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1732 transitions. [2023-08-26 10:12:58,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:12:58,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1732 transitions. [2023-08-26 10:12:58,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.2) internal successors, (1732), 10 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:58,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:58,727 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:58,727 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 136 flow. Second operand 10 states and 1732 transitions. [2023-08-26 10:12:58,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 588 flow [2023-08-26 10:12:58,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 573 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 10:12:58,731 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 305 flow [2023-08-26 10:12:58,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-26 10:12:58,732 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -18 predicate places. [2023-08-26 10:12:58,732 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 305 flow [2023-08-26 10:12:58,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 166.05263157894737) internal successors, (3155), 19 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:12:58,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:12:58,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:12:58,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 10:12:58,938 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,SelfDestructingSolverStorable9 [2023-08-26 10:12:58,939 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:12:58,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:12:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash 591858737, now seen corresponding path program 2 times [2023-08-26 10:12:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:12:58,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641884912] [2023-08-26 10:12:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:12:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:12:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:12:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:12:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:12:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641884912] [2023-08-26 10:12:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641884912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:12:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417766432] [2023-08-26 10:12:59,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:12:59,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:12:59,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:12:59,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:12:59,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 10:12:59,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:12:59,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:12:59,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-26 10:12:59,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:00,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2023-08-26 10:13:00,537 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:13:00,543 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:13:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:00,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:00,774 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:00,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 91 [2023-08-26 10:13:00,818 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:00,819 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:13:01,145 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:01,145 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 155 treesize of output 99 [2023-08-26 10:13:01,156 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:01,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:13:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:01,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417766432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:13:01,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:13:01,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2023-08-26 10:13:01,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860965165] [2023-08-26 10:13:01,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:13:01,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:13:01,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:13:01,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:13:01,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:13:01,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 504 [2023-08-26 10:13:01,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 305 flow. Second operand has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:01,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:13:01,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 504 [2023-08-26 10:13:01,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:13:02,469 INFO L124 PetriNetUnfolderBase]: 1233/2518 cut-off events. [2023-08-26 10:13:02,469 INFO L125 PetriNetUnfolderBase]: For 2507/2578 co-relation queries the response was YES. [2023-08-26 10:13:02,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6562 conditions, 2518 events. 1233/2518 cut-off events. For 2507/2578 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16343 event pairs, 181 based on Foata normal form. 44/2528 useless extension candidates. Maximal degree in co-relation 6550. Up to 1275 conditions per place. [2023-08-26 10:13:02,489 INFO L140 encePairwiseOnDemand]: 493/504 looper letters, 92 selfloop transitions, 54 changer transitions 1/165 dead transitions. [2023-08-26 10:13:02,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 165 transitions, 1021 flow [2023-08-26 10:13:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:13:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:13:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2506 transitions. [2023-08-26 10:13:02,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3314814814814815 [2023-08-26 10:13:02,496 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2506 transitions. [2023-08-26 10:13:02,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2506 transitions. [2023-08-26 10:13:02,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:13:02,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2506 transitions. [2023-08-26 10:13:02,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 167.06666666666666) internal successors, (2506), 15 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:02,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:02,513 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:02,513 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 305 flow. Second operand 15 states and 2506 transitions. [2023-08-26 10:13:02,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 165 transitions, 1021 flow [2023-08-26 10:13:02,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 165 transitions, 1013 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-26 10:13:02,521 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 728 flow [2023-08-26 10:13:02,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=728, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2023-08-26 10:13:02,522 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-26 10:13:02,522 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 728 flow [2023-08-26 10:13:02,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:02,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:13:02,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:13:02,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 10:13:02,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:02,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:13:02,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:13:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -455065589, now seen corresponding path program 3 times [2023-08-26 10:13:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:13:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594401554] [2023-08-26 10:13:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:13:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:13:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:03,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:13:03,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594401554] [2023-08-26 10:13:03,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594401554] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:13:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392045817] [2023-08-26 10:13:03,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:13:03,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:03,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:13:03,602 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:13:03,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 10:13:04,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:13:04,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:13:04,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 10:13:04,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:04,519 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 [2023-08-26 10:13:04,525 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 [2023-08-26 10:13:04,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 52 [2023-08-26 10:13:04,590 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:13:04,593 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:13:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:04,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:05,082 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:05,082 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 147 treesize of output 99 [2023-08-26 10:13:05,093 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:05,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:13:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:05,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392045817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:13:05,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:13:05,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-26 10:13:05,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69431442] [2023-08-26 10:13:05,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:13:05,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 10:13:05,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:13:05,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 10:13:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-26 10:13:05,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 504 [2023-08-26 10:13:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 728 flow. Second operand has 18 states, 18 states have (on average 165.72222222222223) internal successors, (2983), 18 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:13:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 504 [2023-08-26 10:13:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:13:06,226 INFO L124 PetriNetUnfolderBase]: 1248/2610 cut-off events. [2023-08-26 10:13:06,227 INFO L125 PetriNetUnfolderBase]: For 4901/5011 co-relation queries the response was YES. [2023-08-26 10:13:06,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8098 conditions, 2610 events. 1248/2610 cut-off events. For 4901/5011 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17509 event pairs, 240 based on Foata normal form. 32/2584 useless extension candidates. Maximal degree in co-relation 8079. Up to 1434 conditions per place. [2023-08-26 10:13:06,250 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 91 selfloop transitions, 43 changer transitions 1/160 dead transitions. [2023-08-26 10:13:06,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 160 transitions, 1214 flow [2023-08-26 10:13:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 10:13:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 10:13:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1549 transitions. [2023-08-26 10:13:06,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34149029982363316 [2023-08-26 10:13:06,255 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1549 transitions. [2023-08-26 10:13:06,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1549 transitions. [2023-08-26 10:13:06,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:13:06,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1549 transitions. [2023-08-26 10:13:06,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.11111111111111) internal successors, (1549), 9 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:06,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:06,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:06,264 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 728 flow. Second operand 9 states and 1549 transitions. [2023-08-26 10:13:06,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 160 transitions, 1214 flow [2023-08-26 10:13:06,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 160 transitions, 1203 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 10:13:06,275 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 910 flow [2023-08-26 10:13:06,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2023-08-26 10:13:06,276 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2023-08-26 10:13:06,276 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 910 flow [2023-08-26 10:13:06,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 165.72222222222223) internal successors, (2983), 18 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:06,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:13:06,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:13:06,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 10:13:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:06,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:13:06,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:13:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash -60090033, now seen corresponding path program 4 times [2023-08-26 10:13:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:13:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064874518] [2023-08-26 10:13:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:13:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:13:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:13:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064874518] [2023-08-26 10:13:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064874518] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:13:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852755300] [2023-08-26 10:13:07,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:13:07,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:07,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:13:07,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:13:07,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 10:13:08,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:13:08,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:13:08,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-26 10:13:08,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:08,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-26 10:13:08,751 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:13:08,752 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 52 [2023-08-26 10:13:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:08,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:09,047 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:09,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 91 [2023-08-26 10:13:09,066 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:09,067 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:13:09,295 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:09,295 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 155 treesize of output 99 [2023-08-26 10:13:09,305 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:09,306 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:13:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852755300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:13:09,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:13:09,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2023-08-26 10:13:09,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839656772] [2023-08-26 10:13:09,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:13:09,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 10:13:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:13:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 10:13:09,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-26 10:13:09,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 504 [2023-08-26 10:13:09,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 910 flow. Second operand has 25 states, 25 states have (on average 134.76) internal successors, (3369), 25 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:09,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:13:09,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 504 [2023-08-26 10:13:09,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:13:12,034 INFO L124 PetriNetUnfolderBase]: 5273/8748 cut-off events. [2023-08-26 10:13:12,034 INFO L125 PetriNetUnfolderBase]: For 23198/23470 co-relation queries the response was YES. [2023-08-26 10:13:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31323 conditions, 8748 events. 5273/8748 cut-off events. For 23198/23470 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 59474 event pairs, 724 based on Foata normal form. 165/8858 useless extension candidates. Maximal degree in co-relation 31301. Up to 4929 conditions per place. [2023-08-26 10:13:12,117 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 253 selfloop transitions, 96 changer transitions 1/356 dead transitions. [2023-08-26 10:13:12,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 356 transitions, 2681 flow [2023-08-26 10:13:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 10:13:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 10:13:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3163 transitions. [2023-08-26 10:13:12,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2852633477633478 [2023-08-26 10:13:12,125 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3163 transitions. [2023-08-26 10:13:12,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3163 transitions. [2023-08-26 10:13:12,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:13:12,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3163 transitions. [2023-08-26 10:13:12,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.77272727272728) internal successors, (3163), 22 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:12,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:12,145 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:12,145 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 910 flow. Second operand 22 states and 3163 transitions. [2023-08-26 10:13:12,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 356 transitions, 2681 flow [2023-08-26 10:13:12,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 356 transitions, 2613 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-26 10:13:12,205 INFO L231 Difference]: Finished difference. Result has 125 places, 175 transitions, 1715 flow [2023-08-26 10:13:12,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1715, PETRI_PLACES=125, PETRI_TRANSITIONS=175} [2023-08-26 10:13:12,206 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 38 predicate places. [2023-08-26 10:13:12,206 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 175 transitions, 1715 flow [2023-08-26 10:13:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 134.76) internal successors, (3369), 25 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:12,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:13:12,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:13:12,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 10:13:12,414 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,SelfDestructingSolverStorable12 [2023-08-26 10:13:12,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:13:12,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:13:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 222556667, now seen corresponding path program 5 times [2023-08-26 10:13:12,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:13:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324218209] [2023-08-26 10:13:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:13:12,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:13:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:13,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:13:13,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324218209] [2023-08-26 10:13:13,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324218209] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:13:13,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318361071] [2023-08-26 10:13:13,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:13:13,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:13,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:13:13,495 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:13:13,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 10:13:13,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:13:13,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:13:13,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 10:13:13,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:14,046 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 [2023-08-26 10:13:14,054 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 [2023-08-26 10:13:14,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:13:14,152 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-26 10:13:14,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2023-08-26 10:13:14,279 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:13:14,281 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:13:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:14,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:14,855 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (= c_~max1~0 c_~max2~0)) (.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_1180 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1180) c_~A~0.base) .cse1))) (or (= .cse0 c_~max1~0) (<= .cse0 c_~max2~0) (<= .cse0 c_~max3~0)))) (or (and (or .cse2 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_1180 (Array Int Int))) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1180) c_~A~0.base) .cse1)))) (or .cse2 (forall ((v_ArrVal_1180 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1180) c_~A~0.base) .cse1))) (or (< c_~max2~0 .cse3) (<= .cse3 c_~max3~0))))))) is different from false [2023-08-26 10:13:14,944 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:14,944 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 272 treesize of output 208 [2023-08-26 10:13:14,958 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:14,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:13:14,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 130 [2023-08-26 10:13:14,980 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2023-08-26 10:13:14,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 112 [2023-08-26 10:13:15,015 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:15,015 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:13:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-08-26 10:13:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318361071] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:13:15,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:13:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-26 10:13:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307134024] [2023-08-26 10:13:15,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:13:15,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 10:13:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:13:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 10:13:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=493, Unknown=1, NotChecked=46, Total=650 [2023-08-26 10:13:15,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 504 [2023-08-26 10:13:15,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 175 transitions, 1715 flow. Second operand has 26 states, 26 states have (on average 134.26923076923077) internal successors, (3491), 26 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:15,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:13:15,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 504 [2023-08-26 10:13:15,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:13:17,901 INFO L124 PetriNetUnfolderBase]: 6119/10460 cut-off events. [2023-08-26 10:13:17,901 INFO L125 PetriNetUnfolderBase]: For 38239/38667 co-relation queries the response was YES. [2023-08-26 10:13:17,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41131 conditions, 10460 events. 6119/10460 cut-off events. For 38239/38667 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 75064 event pairs, 349 based on Foata normal form. 247/10657 useless extension candidates. Maximal degree in co-relation 41096. Up to 5137 conditions per place. [2023-08-26 10:13:18,084 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 219 selfloop transitions, 115 changer transitions 1/341 dead transitions. [2023-08-26 10:13:18,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 341 transitions, 3022 flow [2023-08-26 10:13:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 10:13:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 10:13:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2465 transitions. [2023-08-26 10:13:18,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2876984126984127 [2023-08-26 10:13:18,092 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2465 transitions. [2023-08-26 10:13:18,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2465 transitions. [2023-08-26 10:13:18,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:13:18,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2465 transitions. [2023-08-26 10:13:18,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:18,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 504.0) internal successors, (9072), 18 states have internal predecessors, (9072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:18,110 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 504.0) internal successors, (9072), 18 states have internal predecessors, (9072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:18,110 INFO L175 Difference]: Start difference. First operand has 125 places, 175 transitions, 1715 flow. Second operand 17 states and 2465 transitions. [2023-08-26 10:13:18,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 341 transitions, 3022 flow [2023-08-26 10:13:18,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 341 transitions, 2896 flow, removed 23 selfloop flow, removed 7 redundant places. [2023-08-26 10:13:18,249 INFO L231 Difference]: Finished difference. Result has 136 places, 191 transitions, 2051 flow [2023-08-26 10:13:18,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2051, PETRI_PLACES=136, PETRI_TRANSITIONS=191} [2023-08-26 10:13:18,250 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 49 predicate places. [2023-08-26 10:13:18,250 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 191 transitions, 2051 flow [2023-08-26 10:13:18,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 134.26923076923077) internal successors, (3491), 26 states have internal predecessors, (3491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:18,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:13:18,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:13:18,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 10:13:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:18,457 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:13:18,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:13:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash -508094467, now seen corresponding path program 6 times [2023-08-26 10:13:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:13:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921872629] [2023-08-26 10:13:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:13:18,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:13:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:13:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921872629] [2023-08-26 10:13:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921872629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:13:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245362635] [2023-08-26 10:13:19,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:13:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:13:19,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:13:19,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 10:13:20,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:13:20,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:13:20,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-26 10:13:20,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:20,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-26 10:13:20,469 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-08-26 10:13:20,477 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:20,477 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:13:20,618 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-26 10:13:20,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 80 [2023-08-26 10:13:20,624 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:13:20,631 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:13:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:20,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:21,015 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:21,016 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 147 treesize of output 99 [2023-08-26 10:13:21,023 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:21,023 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:13:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:13:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245362635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:13:21,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:13:21,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 24 [2023-08-26 10:13:21,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968513436] [2023-08-26 10:13:21,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:13:21,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-26 10:13:21,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:13:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-26 10:13:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-08-26 10:13:21,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 504 [2023-08-26 10:13:21,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 191 transitions, 2051 flow. Second operand has 26 states, 26 states have (on average 135.15384615384616) internal successors, (3514), 26 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:21,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:13:21,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 504 [2023-08-26 10:13:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:13:23,959 INFO L124 PetriNetUnfolderBase]: 7739/12563 cut-off events. [2023-08-26 10:13:23,959 INFO L125 PetriNetUnfolderBase]: For 58650/59149 co-relation queries the response was YES. [2023-08-26 10:13:24,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54271 conditions, 12563 events. 7739/12563 cut-off events. For 58650/59149 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 88852 event pairs, 1082 based on Foata normal form. 335/12817 useless extension candidates. Maximal degree in co-relation 54233. Up to 7649 conditions per place. [2023-08-26 10:13:24,117 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 255 selfloop transitions, 117 changer transitions 1/379 dead transitions. [2023-08-26 10:13:24,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 379 transitions, 3597 flow [2023-08-26 10:13:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 10:13:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 10:13:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3150 transitions. [2023-08-26 10:13:24,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2840909090909091 [2023-08-26 10:13:24,122 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3150 transitions. [2023-08-26 10:13:24,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3150 transitions. [2023-08-26 10:13:24,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:13:24,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3150 transitions. [2023-08-26 10:13:24,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.1818181818182) internal successors, (3150), 22 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:24,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:24,139 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 504.0) internal successors, (11592), 23 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:24,139 INFO L175 Difference]: Start difference. First operand has 136 places, 191 transitions, 2051 flow. Second operand 22 states and 3150 transitions. [2023-08-26 10:13:24,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 379 transitions, 3597 flow [2023-08-26 10:13:24,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 379 transitions, 3460 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-08-26 10:13:24,425 INFO L231 Difference]: Finished difference. Result has 154 places, 216 transitions, 2519 flow [2023-08-26 10:13:24,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2519, PETRI_PLACES=154, PETRI_TRANSITIONS=216} [2023-08-26 10:13:24,425 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 67 predicate places. [2023-08-26 10:13:24,425 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 216 transitions, 2519 flow [2023-08-26 10:13:24,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 135.15384615384616) internal successors, (3514), 26 states have internal predecessors, (3514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:24,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:13:24,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:13:24,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 10:13:24,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:24,636 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:13:24,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:13:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash -896871799, now seen corresponding path program 7 times [2023-08-26 10:13:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:13:24,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324828084] [2023-08-26 10:13:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:13:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:13:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:25,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:13:25,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324828084] [2023-08-26 10:13:25,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324828084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:13:25,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642413350] [2023-08-26 10:13:25,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:13:25,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:25,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:13:25,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:13:25,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 10:13:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:25,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 10:13:25,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:25,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-26 10:13:25,824 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:25,825 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:13:25,841 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-08-26 10:13:25,945 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2023-08-26 10:13:25,948 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:13:25,958 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:13:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:26,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:26,376 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:26,376 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 131 treesize of output 99 [2023-08-26 10:13:26,385 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:26,385 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:13:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642413350] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:13:26,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:13:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-26 10:13:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634933975] [2023-08-26 10:13:26,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:13:26,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 10:13:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:13:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 10:13:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-08-26 10:13:26,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 504 [2023-08-26 10:13:26,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 216 transitions, 2519 flow. Second operand has 21 states, 21 states have (on average 166.14285714285714) internal successors, (3489), 21 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:26,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:13:26,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 504 [2023-08-26 10:13:26,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:13:28,703 INFO L124 PetriNetUnfolderBase]: 2668/5489 cut-off events. [2023-08-26 10:13:28,703 INFO L125 PetriNetUnfolderBase]: For 31775/32120 co-relation queries the response was YES. [2023-08-26 10:13:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23639 conditions, 5489 events. 2668/5489 cut-off events. For 31775/32120 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42466 event pairs, 467 based on Foata normal form. 139/5525 useless extension candidates. Maximal degree in co-relation 23597. Up to 2758 conditions per place. [2023-08-26 10:13:28,748 INFO L140 encePairwiseOnDemand]: 494/504 looper letters, 164 selfloop transitions, 115 changer transitions 7/314 dead transitions. [2023-08-26 10:13:28,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 314 transitions, 3775 flow [2023-08-26 10:13:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 10:13:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 10:13:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2750 transitions. [2023-08-26 10:13:28,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3410218253968254 [2023-08-26 10:13:28,753 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2750 transitions. [2023-08-26 10:13:28,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2750 transitions. [2023-08-26 10:13:28,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:13:28,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2750 transitions. [2023-08-26 10:13:28,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.875) internal successors, (2750), 16 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:28,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 504.0) internal successors, (8568), 17 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:28,764 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 504.0) internal successors, (8568), 17 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:28,765 INFO L175 Difference]: Start difference. First operand has 154 places, 216 transitions, 2519 flow. Second operand 16 states and 2750 transitions. [2023-08-26 10:13:28,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 314 transitions, 3775 flow [2023-08-26 10:13:28,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 314 transitions, 3399 flow, removed 127 selfloop flow, removed 11 redundant places. [2023-08-26 10:13:28,847 INFO L231 Difference]: Finished difference. Result has 162 places, 245 transitions, 2862 flow [2023-08-26 10:13:28,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2862, PETRI_PLACES=162, PETRI_TRANSITIONS=245} [2023-08-26 10:13:28,847 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 75 predicate places. [2023-08-26 10:13:28,848 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 245 transitions, 2862 flow [2023-08-26 10:13:28,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 166.14285714285714) internal successors, (3489), 21 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:13:28,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:13:28,848 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:13:28,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 10:13:29,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 10:13:29,055 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:13:29,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:13:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 449935563, now seen corresponding path program 8 times [2023-08-26 10:13:29,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:13:29,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041834594] [2023-08-26 10:13:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:13:29,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:13:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:13:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:13:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041834594] [2023-08-26 10:13:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041834594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:13:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726282076] [2023-08-26 10:13:29,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:13:29,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:13:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:13:29,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:13:29,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 10:13:30,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:13:30,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:13:30,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 10:13:30,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:13:30,253 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 11 treesize of output 7 [2023-08-26 10:13:30,310 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 [2023-08-26 10:13:30,437 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 [2023-08-26 10:13:30,450 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 [2023-08-26 10:13:30,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:13:30,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-26 10:13:30,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:13:30,658 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-26 10:13:30,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 51 [2023-08-26 10:13:30,770 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 0 case distinctions, treesize of input 36 treesize of output 39 [2023-08-26 10:13:30,774 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 0 case distinctions, treesize of input 33 treesize of output 36 [2023-08-26 10:13:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:13:30,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:13:31,318 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0))) (.cse2 (= c_~max1~0 c_~max2~0))) (and (forall ((v_ArrVal_1672 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1672) c_~A~0.base) .cse1))) (or (= .cse0 c_~max1~0) (<= .cse0 c_~max2~0) (<= .cse0 c_~max3~0)))) (or (and (or .cse2 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_1672 (Array Int Int))) (< c_~max3~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1672) c_~A~0.base) .cse1)))) (or (forall ((v_ArrVal_1672 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1672) c_~A~0.base) .cse1))) (or (< c_~max2~0 .cse3) (<= .cse3 c_~max3~0)))) .cse2))) is different from false [2023-08-26 10:13:32,922 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:32,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 91 [2023-08-26 10:13:32,996 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:13:32,996 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:14:02,505 WARN L234 SmtUtils]: Spent 28.40s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 10:14:02,579 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:02,580 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 55 treesize of output 43 [2023-08-26 10:14:02,590 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:02,590 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 319 treesize of output 307 [2023-08-26 10:14:02,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 124 [2023-08-26 10:14:02,608 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2023-08-26 10:14:02,621 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:02,621 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 62 treesize of output 62 [2023-08-26 10:14:02,849 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:02,849 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 77 treesize of output 53 [2023-08-26 10:14:02,867 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:02,867 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 1264 treesize of output 1200 [2023-08-26 10:14:02,890 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:02,890 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 84 treesize of output 82 [2023-08-26 10:14:02,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 106 [2023-08-26 10:14:02,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-26 10:14:03,061 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:03,061 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 77 treesize of output 53 [2023-08-26 10:14:03,076 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:03,077 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 648 treesize of output 616 [2023-08-26 10:14:03,094 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:03,094 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 84 treesize of output 82 [2023-08-26 10:14:03,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 106 [2023-08-26 10:14:03,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-26 10:14:03,243 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-26 10:14:03,243 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 87 treesize of output 1 [2023-08-26 10:14:03,251 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-26 10:14:03,251 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 119 treesize of output 1 [2023-08-26 10:14:03,262 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-26 10:14:03,262 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 138 treesize of output 1 [2023-08-26 10:14:03,271 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-26 10:14:03,271 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 109 treesize of output 1 [2023-08-26 10:14:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:14:03,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726282076] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:03,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:03,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-26 10:14:03,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393707406] [2023-08-26 10:14:03,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:03,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 10:14:03,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 10:14:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=450, Unknown=8, NotChecked=44, Total=600 [2023-08-26 10:14:03,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 504 [2023-08-26 10:14:03,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 245 transitions, 2862 flow. Second operand has 25 states, 25 states have (on average 138.28) internal successors, (3457), 25 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:03,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:03,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 504 [2023-08-26 10:14:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:07,078 INFO L124 PetriNetUnfolderBase]: 9114/15736 cut-off events. [2023-08-26 10:14:07,078 INFO L125 PetriNetUnfolderBase]: For 97983/98833 co-relation queries the response was YES. [2023-08-26 10:14:07,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72197 conditions, 15736 events. 9114/15736 cut-off events. For 97983/98833 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 123826 event pairs, 847 based on Foata normal form. 226/15821 useless extension candidates. Maximal degree in co-relation 72150. Up to 9428 conditions per place. [2023-08-26 10:14:07,214 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 241 selfloop transitions, 98 changer transitions 1/356 dead transitions. [2023-08-26 10:14:07,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 356 transitions, 4032 flow [2023-08-26 10:14:07,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:14:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:14:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1512 transitions. [2023-08-26 10:14:07,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2023-08-26 10:14:07,216 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1512 transitions. [2023-08-26 10:14:07,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1512 transitions. [2023-08-26 10:14:07,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:07,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1512 transitions. [2023-08-26 10:14:07,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.2) internal successors, (1512), 10 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 10:14:07,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:07,222 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:07,222 INFO L175 Difference]: Start difference. First operand has 162 places, 245 transitions, 2862 flow. Second operand 10 states and 1512 transitions. [2023-08-26 10:14:07,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 356 transitions, 4032 flow [2023-08-26 10:14:07,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 356 transitions, 3751 flow, removed 94 selfloop flow, removed 7 redundant places. [2023-08-26 10:14:07,760 INFO L231 Difference]: Finished difference. Result has 167 places, 260 transitions, 3062 flow [2023-08-26 10:14:07,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=2581, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3062, PETRI_PLACES=167, PETRI_TRANSITIONS=260} [2023-08-26 10:14:07,760 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 80 predicate places. [2023-08-26 10:14:07,761 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 260 transitions, 3062 flow [2023-08-26 10:14:07,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 138.28) internal successors, (3457), 25 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:07,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:07,762 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:07,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:07,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 10:14:07,967 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:07,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:07,968 INFO L85 PathProgramCache]: Analyzing trace with hash 727719365, now seen corresponding path program 9 times [2023-08-26 10:14:07,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:07,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297505065] [2023-08-26 10:14:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:07,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:14:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297505065] [2023-08-26 10:14:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297505065] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353891643] [2023-08-26 10:14:08,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:14:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:08,149 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:08,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 10:14:08,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:14:08,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:08,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:14:08,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:08,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353891643] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:08,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:08,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2023-08-26 10:14:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072674751] [2023-08-26 10:14:08,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:08,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 10:14:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 10:14:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-26 10:14:08,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 504 [2023-08-26 10:14:08,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 260 transitions, 3062 flow. Second operand has 18 states, 18 states have (on average 182.22222222222223) internal successors, (3280), 18 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:08,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:08,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 504 [2023-08-26 10:14:08,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:10,442 INFO L124 PetriNetUnfolderBase]: 3990/8011 cut-off events. [2023-08-26 10:14:10,442 INFO L125 PetriNetUnfolderBase]: For 50635/50848 co-relation queries the response was YES. [2023-08-26 10:14:10,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34881 conditions, 8011 events. 3990/8011 cut-off events. For 50635/50848 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 64929 event pairs, 821 based on Foata normal form. 154/7949 useless extension candidates. Maximal degree in co-relation 34832. Up to 3040 conditions per place. [2023-08-26 10:14:10,504 INFO L140 encePairwiseOnDemand]: 491/504 looper letters, 370 selfloop transitions, 173 changer transitions 0/561 dead transitions. [2023-08-26 10:14:10,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 561 transitions, 7154 flow [2023-08-26 10:14:10,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 10:14:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 10:14:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4859 transitions. [2023-08-26 10:14:10,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708028083028083 [2023-08-26 10:14:10,509 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4859 transitions. [2023-08-26 10:14:10,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4859 transitions. [2023-08-26 10:14:10,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:10,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4859 transitions. [2023-08-26 10:14:10,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 186.8846153846154) internal successors, (4859), 26 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:10,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 504.0) internal successors, (13608), 27 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:10,524 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 504.0) internal successors, (13608), 27 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:10,524 INFO L175 Difference]: Start difference. First operand has 167 places, 260 transitions, 3062 flow. Second operand 26 states and 4859 transitions. [2023-08-26 10:14:10,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 561 transitions, 7154 flow [2023-08-26 10:14:10,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 561 transitions, 6920 flow, removed 64 selfloop flow, removed 5 redundant places. [2023-08-26 10:14:10,626 INFO L231 Difference]: Finished difference. Result has 202 places, 351 transitions, 4767 flow [2023-08-26 10:14:10,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4767, PETRI_PLACES=202, PETRI_TRANSITIONS=351} [2023-08-26 10:14:10,627 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 115 predicate places. [2023-08-26 10:14:10,627 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 351 transitions, 4767 flow [2023-08-26 10:14:10,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 182.22222222222223) internal successors, (3280), 18 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:10,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:10,628 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:10,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:10,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 10:14:10,828 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:10,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1741831632, now seen corresponding path program 10 times [2023-08-26 10:14:10,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:10,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341654289] [2023-08-26 10:14:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341654289] [2023-08-26 10:14:10,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341654289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287788022] [2023-08-26 10:14:10,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:14:10,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:10,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:10,971 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:10,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 10:14:11,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:14:11,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:11,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:14:11,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:14:11,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:14:11,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287788022] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:11,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:11,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2023-08-26 10:14:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696404783] [2023-08-26 10:14:11,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:11,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 10:14:11,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 10:14:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-08-26 10:14:11,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 504 [2023-08-26 10:14:11,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 351 transitions, 4767 flow. Second operand has 19 states, 19 states have (on average 181.89473684210526) internal successors, (3456), 19 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:11,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:11,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 504 [2023-08-26 10:14:11,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:13,173 INFO L124 PetriNetUnfolderBase]: 3784/8020 cut-off events. [2023-08-26 10:14:13,173 INFO L125 PetriNetUnfolderBase]: For 97705/98175 co-relation queries the response was YES. [2023-08-26 10:14:13,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43026 conditions, 8020 events. 3784/8020 cut-off events. For 97705/98175 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 67769 event pairs, 658 based on Foata normal form. 515/8415 useless extension candidates. Maximal degree in co-relation 42962. Up to 1435 conditions per place. [2023-08-26 10:14:13,259 INFO L140 encePairwiseOnDemand]: 491/504 looper letters, 534 selfloop transitions, 138 changer transitions 0/690 dead transitions. [2023-08-26 10:14:13,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 690 transitions, 10055 flow [2023-08-26 10:14:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 10:14:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 10:14:13,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3768 transitions. [2023-08-26 10:14:13,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2023-08-26 10:14:13,263 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3768 transitions. [2023-08-26 10:14:13,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3768 transitions. [2023-08-26 10:14:13,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:13,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3768 transitions. [2023-08-26 10:14:13,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 188.4) internal successors, (3768), 20 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:13,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 504.0) internal successors, (10584), 21 states have internal predecessors, (10584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:13,275 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 504.0) internal successors, (10584), 21 states have internal predecessors, (10584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:13,275 INFO L175 Difference]: Start difference. First operand has 202 places, 351 transitions, 4767 flow. Second operand 20 states and 3768 transitions. [2023-08-26 10:14:13,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 690 transitions, 10055 flow [2023-08-26 10:14:13,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 690 transitions, 9360 flow, removed 344 selfloop flow, removed 3 redundant places. [2023-08-26 10:14:13,652 INFO L231 Difference]: Finished difference. Result has 228 places, 382 transitions, 5199 flow [2023-08-26 10:14:13,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4030, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5199, PETRI_PLACES=228, PETRI_TRANSITIONS=382} [2023-08-26 10:14:13,652 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 141 predicate places. [2023-08-26 10:14:13,652 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 382 transitions, 5199 flow [2023-08-26 10:14:13,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 181.89473684210526) internal successors, (3456), 19 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:13,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:13,653 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:13,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:13,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:13,854 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:13,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:13,854 INFO L85 PathProgramCache]: Analyzing trace with hash -586229044, now seen corresponding path program 11 times [2023-08-26 10:14:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245986925] [2023-08-26 10:14:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:14:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245986925] [2023-08-26 10:14:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245986925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800584174] [2023-08-26 10:14:13,985 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:14:13,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:13,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:13,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:14,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 10:14:14,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:14:14,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:14,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 10:14:14,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:14:14,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:14:14,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800584174] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:14,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:14,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-08-26 10:14:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307640776] [2023-08-26 10:14:14,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 10:14:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 10:14:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-08-26 10:14:14,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:14,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 382 transitions, 5199 flow. Second operand has 18 states, 18 states have (on average 185.61111111111111) internal successors, (3341), 18 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:14,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:14,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:14,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:17,227 INFO L124 PetriNetUnfolderBase]: 3942/8501 cut-off events. [2023-08-26 10:14:17,227 INFO L125 PetriNetUnfolderBase]: For 160810/161451 co-relation queries the response was YES. [2023-08-26 10:14:17,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51646 conditions, 8501 events. 3942/8501 cut-off events. For 160810/161451 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 74126 event pairs, 364 based on Foata normal form. 530/8877 useless extension candidates. Maximal degree in co-relation 51571. Up to 1456 conditions per place. [2023-08-26 10:14:17,326 INFO L140 encePairwiseOnDemand]: 494/504 looper letters, 455 selfloop transitions, 328 changer transitions 34/855 dead transitions. [2023-08-26 10:14:17,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 855 transitions, 13658 flow [2023-08-26 10:14:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-26 10:14:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-26 10:14:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8369 transitions. [2023-08-26 10:14:17,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37738997113997114 [2023-08-26 10:14:17,339 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8369 transitions. [2023-08-26 10:14:17,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8369 transitions. [2023-08-26 10:14:17,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:17,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8369 transitions. [2023-08-26 10:14:17,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 190.20454545454547) internal successors, (8369), 44 states have internal predecessors, (8369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:17,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:17,366 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:17,366 INFO L175 Difference]: Start difference. First operand has 228 places, 382 transitions, 5199 flow. Second operand 44 states and 8369 transitions. [2023-08-26 10:14:17,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 855 transitions, 13658 flow [2023-08-26 10:14:17,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 855 transitions, 13330 flow, removed 153 selfloop flow, removed 5 redundant places. [2023-08-26 10:14:17,771 INFO L231 Difference]: Finished difference. Result has 283 places, 507 transitions, 8438 flow [2023-08-26 10:14:17,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4707, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=8438, PETRI_PLACES=283, PETRI_TRANSITIONS=507} [2023-08-26 10:14:17,772 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 196 predicate places. [2023-08-26 10:14:17,772 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 507 transitions, 8438 flow [2023-08-26 10:14:17,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 185.61111111111111) internal successors, (3341), 18 states have internal predecessors, (3341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:17,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:17,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:17,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:17,973 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:17,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 881014901, now seen corresponding path program 1 times [2023-08-26 10:14:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:17,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840524874] [2023-08-26 10:14:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840524874] [2023-08-26 10:14:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840524874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39051051] [2023-08-26 10:14:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:18,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:18,092 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:18,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 10:14:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:18,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:14:18,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:18,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:18,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39051051] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:18,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:18,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-26 10:14:18,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757119965] [2023-08-26 10:14:18,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:18,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 10:14:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 10:14:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-26 10:14:18,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 504 [2023-08-26 10:14:18,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 507 transitions, 8438 flow. Second operand has 12 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:18,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:18,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 504 [2023-08-26 10:14:18,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:19,724 INFO L124 PetriNetUnfolderBase]: 3395/7750 cut-off events. [2023-08-26 10:14:19,724 INFO L125 PetriNetUnfolderBase]: For 211709/212514 co-relation queries the response was YES. [2023-08-26 10:14:19,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50375 conditions, 7750 events. 3395/7750 cut-off events. For 211709/212514 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 69401 event pairs, 1087 based on Foata normal form. 329/7845 useless extension candidates. Maximal degree in co-relation 50282. Up to 3686 conditions per place. [2023-08-26 10:14:19,813 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 291 selfloop transitions, 3 changer transitions 170/495 dead transitions. [2023-08-26 10:14:19,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 495 transitions, 8947 flow [2023-08-26 10:14:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:14:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:14:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1174 transitions. [2023-08-26 10:14:19,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38822751322751325 [2023-08-26 10:14:19,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1174 transitions. [2023-08-26 10:14:19,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1174 transitions. [2023-08-26 10:14:19,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:19,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1174 transitions. [2023-08-26 10:14:19,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2023-08-26 10:14:19,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:19,817 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:19,817 INFO L175 Difference]: Start difference. First operand has 283 places, 507 transitions, 8438 flow. Second operand 6 states and 1174 transitions. [2023-08-26 10:14:19,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 495 transitions, 8947 flow [2023-08-26 10:14:20,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 495 transitions, 7831 flow, removed 357 selfloop flow, removed 19 redundant places. [2023-08-26 10:14:20,675 INFO L231 Difference]: Finished difference. Result has 266 places, 325 transitions, 4976 flow [2023-08-26 10:14:20,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=6465, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4976, PETRI_PLACES=266, PETRI_TRANSITIONS=325} [2023-08-26 10:14:20,675 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 179 predicate places. [2023-08-26 10:14:20,675 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 325 transitions, 4976 flow [2023-08-26 10:14:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:20,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:20,676 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:20,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:20,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-26 10:14:20,877 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:20,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1969284774, now seen corresponding path program 12 times [2023-08-26 10:14:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142677726] [2023-08-26 10:14:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:21,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:21,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142677726] [2023-08-26 10:14:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142677726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:21,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735975422] [2023-08-26 10:14:21,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:14:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:21,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:21,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 10:14:21,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:14:21,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:21,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:14:21,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:21,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:21,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735975422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:21,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:21,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-08-26 10:14:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758059331] [2023-08-26 10:14:21,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:21,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 10:14:21,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 10:14:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-26 10:14:21,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:21,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 325 transitions, 4976 flow. Second operand has 19 states, 19 states have (on average 185.3684210526316) internal successors, (3522), 19 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:21,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:21,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:22,717 INFO L124 PetriNetUnfolderBase]: 2600/5339 cut-off events. [2023-08-26 10:14:22,717 INFO L125 PetriNetUnfolderBase]: For 144484/145080 co-relation queries the response was YES. [2023-08-26 10:14:22,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36535 conditions, 5339 events. 2600/5339 cut-off events. For 144484/145080 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 40532 event pairs, 428 based on Foata normal form. 210/5435 useless extension candidates. Maximal degree in co-relation 36455. Up to 1575 conditions per place. [2023-08-26 10:14:22,782 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 393 selfloop transitions, 88 changer transitions 0/512 dead transitions. [2023-08-26 10:14:22,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 512 transitions, 8778 flow [2023-08-26 10:14:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:14:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:14:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1903 transitions. [2023-08-26 10:14:22,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37757936507936507 [2023-08-26 10:14:22,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1903 transitions. [2023-08-26 10:14:22,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1903 transitions. [2023-08-26 10:14:22,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:22,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1903 transitions. [2023-08-26 10:14:22,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.3) internal successors, (1903), 10 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:22,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:22,798 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:22,798 INFO L175 Difference]: Start difference. First operand has 266 places, 325 transitions, 4976 flow. Second operand 10 states and 1903 transitions. [2023-08-26 10:14:22,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 512 transitions, 8778 flow [2023-08-26 10:14:23,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 512 transitions, 7823 flow, removed 342 selfloop flow, removed 17 redundant places. [2023-08-26 10:14:23,169 INFO L231 Difference]: Finished difference. Result has 203 places, 340 transitions, 4990 flow [2023-08-26 10:14:23,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4363, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4990, PETRI_PLACES=203, PETRI_TRANSITIONS=340} [2023-08-26 10:14:23,169 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 116 predicate places. [2023-08-26 10:14:23,169 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 340 transitions, 4990 flow [2023-08-26 10:14:23,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 185.3684210526316) internal successors, (3522), 19 states have internal predecessors, (3522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:23,170 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:23,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:23,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:23,370 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:23,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1138730140, now seen corresponding path program 13 times [2023-08-26 10:14:23,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:23,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576910599] [2023-08-26 10:14:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:23,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576910599] [2023-08-26 10:14:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576910599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363053007] [2023-08-26 10:14:23,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:14:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:23,541 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:23,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 10:14:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:23,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:14:23,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:23,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363053007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:23,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:23,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-26 10:14:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355594008] [2023-08-26 10:14:23,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:23,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:14:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:14:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:14:23,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:23,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 340 transitions, 4990 flow. Second operand has 20 states, 20 states have (on average 185.1) internal successors, (3702), 20 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:23,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:23,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:23,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:25,124 INFO L124 PetriNetUnfolderBase]: 2680/5686 cut-off events. [2023-08-26 10:14:25,124 INFO L125 PetriNetUnfolderBase]: For 128751/129397 co-relation queries the response was YES. [2023-08-26 10:14:25,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35570 conditions, 5686 events. 2680/5686 cut-off events. For 128751/129397 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 45042 event pairs, 693 based on Foata normal form. 177/5690 useless extension candidates. Maximal degree in co-relation 35500. Up to 3112 conditions per place. [2023-08-26 10:14:25,190 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 365 selfloop transitions, 78 changer transitions 0/474 dead transitions. [2023-08-26 10:14:25,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 474 transitions, 7734 flow [2023-08-26 10:14:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:14:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:14:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1897 transitions. [2023-08-26 10:14:25,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763888888888889 [2023-08-26 10:14:25,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1897 transitions. [2023-08-26 10:14:25,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1897 transitions. [2023-08-26 10:14:25,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:25,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1897 transitions. [2023-08-26 10:14:25,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 189.7) internal successors, (1897), 10 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:25,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:25,196 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:25,196 INFO L175 Difference]: Start difference. First operand has 203 places, 340 transitions, 4990 flow. Second operand 10 states and 1897 transitions. [2023-08-26 10:14:25,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 474 transitions, 7734 flow [2023-08-26 10:14:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 474 transitions, 7612 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-08-26 10:14:25,538 INFO L231 Difference]: Finished difference. Result has 208 places, 371 transitions, 5683 flow [2023-08-26 10:14:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5683, PETRI_PLACES=208, PETRI_TRANSITIONS=371} [2023-08-26 10:14:25,539 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 121 predicate places. [2023-08-26 10:14:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 371 transitions, 5683 flow [2023-08-26 10:14:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 185.1) internal successors, (3702), 20 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:25,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:25,540 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:25,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:25,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:25,740 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:25,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -701857656, now seen corresponding path program 14 times [2023-08-26 10:14:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874447200] [2023-08-26 10:14:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874447200] [2023-08-26 10:14:25,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874447200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676749524] [2023-08-26 10:14:25,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:14:25,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:25,929 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:25,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 10:14:26,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:14:26,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:26,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:14:26,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:26,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:14:26,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676749524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:26,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:26,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-08-26 10:14:26,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279523866] [2023-08-26 10:14:26,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:26,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 10:14:26,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 10:14:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-08-26 10:14:26,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:26,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 371 transitions, 5683 flow. Second operand has 21 states, 21 states have (on average 185.14285714285714) internal successors, (3888), 21 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:26,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:27,851 INFO L124 PetriNetUnfolderBase]: 3094/6424 cut-off events. [2023-08-26 10:14:27,852 INFO L125 PetriNetUnfolderBase]: For 155370/156117 co-relation queries the response was YES. [2023-08-26 10:14:27,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42375 conditions, 6424 events. 3094/6424 cut-off events. For 155370/156117 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 51361 event pairs, 722 based on Foata normal form. 219/6459 useless extension candidates. Maximal degree in co-relation 42303. Up to 3272 conditions per place. [2023-08-26 10:14:27,929 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 459 selfloop transitions, 126 changer transitions 0/616 dead transitions. [2023-08-26 10:14:27,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 616 transitions, 10225 flow [2023-08-26 10:14:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:14:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:14:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2860 transitions. [2023-08-26 10:14:27,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2023-08-26 10:14:27,932 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2860 transitions. [2023-08-26 10:14:27,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2860 transitions. [2023-08-26 10:14:27,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:27,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2860 transitions. [2023-08-26 10:14:27,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 190.66666666666666) internal successors, (2860), 15 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:27,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:27,940 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 504.0) internal successors, (8064), 16 states have internal predecessors, (8064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:27,940 INFO L175 Difference]: Start difference. First operand has 208 places, 371 transitions, 5683 flow. Second operand 15 states and 2860 transitions. [2023-08-26 10:14:27,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 616 transitions, 10225 flow [2023-08-26 10:14:28,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 616 transitions, 10059 flow, removed 78 selfloop flow, removed 5 redundant places. [2023-08-26 10:14:28,406 INFO L231 Difference]: Finished difference. Result has 220 places, 419 transitions, 6831 flow [2023-08-26 10:14:28,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6831, PETRI_PLACES=220, PETRI_TRANSITIONS=419} [2023-08-26 10:14:28,407 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 133 predicate places. [2023-08-26 10:14:28,407 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 419 transitions, 6831 flow [2023-08-26 10:14:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 185.14285714285714) internal successors, (3888), 21 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:28,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:28,408 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:28,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:28,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-26 10:14:28,608 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:28,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1165307956, now seen corresponding path program 15 times [2023-08-26 10:14:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226629864] [2023-08-26 10:14:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226629864] [2023-08-26 10:14:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226629864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570503274] [2023-08-26 10:14:28,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:14:28,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:28,792 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:28,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 10:14:29,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:14:29,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:29,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:14:29,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:29,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570503274] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:29,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:29,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-26 10:14:29,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765301987] [2023-08-26 10:14:29,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:29,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 10:14:29,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 10:14:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-26 10:14:29,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:29,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 419 transitions, 6831 flow. Second operand has 22 states, 22 states have (on average 185.36363636363637) internal successors, (4078), 22 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:29,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:29,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:29,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:31,123 INFO L124 PetriNetUnfolderBase]: 3066/6326 cut-off events. [2023-08-26 10:14:31,123 INFO L125 PetriNetUnfolderBase]: For 178095/178999 co-relation queries the response was YES. [2023-08-26 10:14:31,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43853 conditions, 6326 events. 3066/6326 cut-off events. For 178095/178999 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 50211 event pairs, 698 based on Foata normal form. 264/6403 useless extension candidates. Maximal degree in co-relation 43779. Up to 3272 conditions per place. [2023-08-26 10:14:31,202 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 404 selfloop transitions, 124 changer transitions 0/559 dead transitions. [2023-08-26 10:14:31,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 559 transitions, 9796 flow [2023-08-26 10:14:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 10:14:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 10:14:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2282 transitions. [2023-08-26 10:14:31,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773148148148148 [2023-08-26 10:14:31,204 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2282 transitions. [2023-08-26 10:14:31,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2282 transitions. [2023-08-26 10:14:31,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:31,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2282 transitions. [2023-08-26 10:14:31,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:31,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:31,209 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:31,209 INFO L175 Difference]: Start difference. First operand has 220 places, 419 transitions, 6831 flow. Second operand 12 states and 2282 transitions. [2023-08-26 10:14:31,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 559 transitions, 9796 flow [2023-08-26 10:14:31,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 559 transitions, 9304 flow, removed 197 selfloop flow, removed 7 redundant places. [2023-08-26 10:14:31,687 INFO L231 Difference]: Finished difference. Result has 223 places, 418 transitions, 6566 flow [2023-08-26 10:14:31,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6566, PETRI_PLACES=223, PETRI_TRANSITIONS=418} [2023-08-26 10:14:31,688 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 136 predicate places. [2023-08-26 10:14:31,688 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 418 transitions, 6566 flow [2023-08-26 10:14:31,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 185.36363636363637) internal successors, (4078), 22 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:31,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:31,689 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:31,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:31,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:31,889 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:31,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1105351416, now seen corresponding path program 16 times [2023-08-26 10:14:31,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:31,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370678080] [2023-08-26 10:14:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370678080] [2023-08-26 10:14:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370678080] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887830263] [2023-08-26 10:14:32,047 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:14:32,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:32,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:32,049 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:32,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 10:14:32,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:14:32,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:32,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:14:32,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:32,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:14:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887830263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:32,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:32,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-26 10:14:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120593324] [2023-08-26 10:14:32,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:32,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:14:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:14:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:14:32,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 504 [2023-08-26 10:14:32,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 418 transitions, 6566 flow. Second operand has 20 states, 20 states have (on average 181.4) internal successors, (3628), 20 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:32,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:32,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 504 [2023-08-26 10:14:32,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:35,692 INFO L124 PetriNetUnfolderBase]: 4467/8654 cut-off events. [2023-08-26 10:14:35,692 INFO L125 PetriNetUnfolderBase]: For 262098/263169 co-relation queries the response was YES. [2023-08-26 10:14:35,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63748 conditions, 8654 events. 4467/8654 cut-off events. For 262098/263169 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 67753 event pairs, 209 based on Foata normal form. 262/8852 useless extension candidates. Maximal degree in co-relation 63674. Up to 2219 conditions per place. [2023-08-26 10:14:35,799 INFO L140 encePairwiseOnDemand]: 492/504 looper letters, 366 selfloop transitions, 504 changer transitions 0/888 dead transitions. [2023-08-26 10:14:35,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 888 transitions, 15740 flow [2023-08-26 10:14:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-26 10:14:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-26 10:14:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8191 transitions. [2023-08-26 10:14:35,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693632756132756 [2023-08-26 10:14:35,820 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8191 transitions. [2023-08-26 10:14:35,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8191 transitions. [2023-08-26 10:14:35,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:35,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8191 transitions. [2023-08-26 10:14:35,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 186.1590909090909) internal successors, (8191), 44 states have internal predecessors, (8191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:35,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:35,854 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 504.0) internal successors, (22680), 45 states have internal predecessors, (22680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:35,855 INFO L175 Difference]: Start difference. First operand has 223 places, 418 transitions, 6566 flow. Second operand 44 states and 8191 transitions. [2023-08-26 10:14:35,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 888 transitions, 15740 flow [2023-08-26 10:14:36,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 888 transitions, 15388 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-26 10:14:36,763 INFO L231 Difference]: Finished difference. Result has 267 places, 649 transitions, 12611 flow [2023-08-26 10:14:36,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12611, PETRI_PLACES=267, PETRI_TRANSITIONS=649} [2023-08-26 10:14:36,764 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 180 predicate places. [2023-08-26 10:14:36,764 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 649 transitions, 12611 flow [2023-08-26 10:14:36,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 181.4) internal successors, (3628), 20 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:36,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:36,765 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:36,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:36,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:36,966 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:36,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1216643114, now seen corresponding path program 17 times [2023-08-26 10:14:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:36,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864474617] [2023-08-26 10:14:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:37,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:37,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864474617] [2023-08-26 10:14:37,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864474617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:37,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232020109] [2023-08-26 10:14:37,128 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:14:37,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:37,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:37,129 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:37,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 10:14:37,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:14:37,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:37,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:14:37,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:37,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:37,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232020109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:37,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:37,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-08-26 10:14:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099768418] [2023-08-26 10:14:37,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 10:14:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 10:14:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-08-26 10:14:37,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:37,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 649 transitions, 12611 flow. Second operand has 21 states, 21 states have (on average 185.0) internal successors, (3885), 21 states have internal predecessors, (3885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:37,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:37,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:37,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:40,167 INFO L124 PetriNetUnfolderBase]: 4351/8604 cut-off events. [2023-08-26 10:14:40,167 INFO L125 PetriNetUnfolderBase]: For 306279/307562 co-relation queries the response was YES. [2023-08-26 10:14:40,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66661 conditions, 8604 events. 4351/8604 cut-off events. For 306279/307562 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 69161 event pairs, 533 based on Foata normal form. 268/8743 useless extension candidates. Maximal degree in co-relation 66575. Up to 2695 conditions per place. [2023-08-26 10:14:40,284 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 401 selfloop transitions, 368 changer transitions 0/811 dead transitions. [2023-08-26 10:14:40,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 811 transitions, 15574 flow [2023-08-26 10:14:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 10:14:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 10:14:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3639 transitions. [2023-08-26 10:14:40,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3800125313283208 [2023-08-26 10:14:40,288 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3639 transitions. [2023-08-26 10:14:40,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3639 transitions. [2023-08-26 10:14:40,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:40,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3639 transitions. [2023-08-26 10:14:40,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 191.52631578947367) internal successors, (3639), 19 states have internal predecessors, (3639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:40,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 504.0) internal successors, (10080), 20 states have internal predecessors, (10080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:40,299 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 504.0) internal successors, (10080), 20 states have internal predecessors, (10080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:40,299 INFO L175 Difference]: Start difference. First operand has 267 places, 649 transitions, 12611 flow. Second operand 19 states and 3639 transitions. [2023-08-26 10:14:40,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 811 transitions, 15574 flow [2023-08-26 10:14:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 811 transitions, 13085 flow, removed 1224 selfloop flow, removed 6 redundant places. [2023-08-26 10:14:41,702 INFO L231 Difference]: Finished difference. Result has 278 places, 642 transitions, 10716 flow [2023-08-26 10:14:41,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=9762, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10716, PETRI_PLACES=278, PETRI_TRANSITIONS=642} [2023-08-26 10:14:41,703 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 191 predicate places. [2023-08-26 10:14:41,703 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 642 transitions, 10716 flow [2023-08-26 10:14:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 185.0) internal successors, (3885), 21 states have internal predecessors, (3885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:41,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:41,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:41,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 10:14:41,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:41,910 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:41,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash -220893808, now seen corresponding path program 18 times [2023-08-26 10:14:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704102925] [2023-08-26 10:14:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:41,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:42,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:42,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704102925] [2023-08-26 10:14:42,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704102925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:42,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609064506] [2023-08-26 10:14:42,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:14:42,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:42,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:42,076 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:42,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 10:14:42,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:14:42,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:42,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:14:42,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:42,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:42,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 10:14:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609064506] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:14:42,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:14:42,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-26 10:14:42,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379568270] [2023-08-26 10:14:42,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:14:42,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:14:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:14:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:14:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:14:42,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 504 [2023-08-26 10:14:42,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 642 transitions, 10716 flow. Second operand has 20 states, 20 states have (on average 185.05) internal successors, (3701), 20 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:42,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:14:42,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 504 [2023-08-26 10:14:42,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:14:44,690 INFO L124 PetriNetUnfolderBase]: 4362/8615 cut-off events. [2023-08-26 10:14:44,690 INFO L125 PetriNetUnfolderBase]: For 176705/177962 co-relation queries the response was YES. [2023-08-26 10:14:44,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57690 conditions, 8615 events. 4362/8615 cut-off events. For 176705/177962 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 69416 event pairs, 681 based on Foata normal form. 138/8586 useless extension candidates. Maximal degree in co-relation 57603. Up to 3191 conditions per place. [2023-08-26 10:14:44,795 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 337 selfloop transitions, 309 changer transitions 0/687 dead transitions. [2023-08-26 10:14:44,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 687 transitions, 12382 flow [2023-08-26 10:14:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:14:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:14:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1902 transitions. [2023-08-26 10:14:44,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773809523809524 [2023-08-26 10:14:44,798 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1902 transitions. [2023-08-26 10:14:44,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1902 transitions. [2023-08-26 10:14:44,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:14:44,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1902 transitions. [2023-08-26 10:14:44,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.2) internal successors, (1902), 10 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:44,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:44,801 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 504.0) internal successors, (5544), 11 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:44,801 INFO L175 Difference]: Start difference. First operand has 278 places, 642 transitions, 10716 flow. Second operand 10 states and 1902 transitions. [2023-08-26 10:14:44,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 687 transitions, 12382 flow [2023-08-26 10:14:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 687 transitions, 11598 flow, removed 29 selfloop flow, removed 18 redundant places. [2023-08-26 10:14:45,429 INFO L231 Difference]: Finished difference. Result has 268 places, 637 transitions, 10454 flow [2023-08-26 10:14:45,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=9836, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10454, PETRI_PLACES=268, PETRI_TRANSITIONS=637} [2023-08-26 10:14:45,430 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 181 predicate places. [2023-08-26 10:14:45,430 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 637 transitions, 10454 flow [2023-08-26 10:14:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 185.05) internal successors, (3701), 20 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:14:45,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:14:45,431 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:14:45,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-26 10:14:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 10:14:45,641 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 60 more)] === [2023-08-26 10:14:45,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:14:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash -754192334, now seen corresponding path program 2 times [2023-08-26 10:14:45,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:14:45,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701568661] [2023-08-26 10:14:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:14:45,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:14:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:14:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:14:47,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:14:47,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701568661] [2023-08-26 10:14:47,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701568661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:14:47,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566562097] [2023-08-26 10:14:47,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:14:47,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:14:47,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:14:47,237 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:14:47,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 10:14:47,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:14:47,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:14:47,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 10:14:47,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:14:47,893 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 [2023-08-26 10:14:47,901 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 [2023-08-26 10:14:48,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 67 [2023-08-26 10:14:48,094 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:48,094 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:14:48,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-08-26 10:14:48,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-08-26 10:14:48,122 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:48,123 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:14:49,827 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 73 [2023-08-26 10:14:49,846 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:49,847 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 2 case distinctions, treesize of input 165 treesize of output 107 [2023-08-26 10:14:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:14:50,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:14:50,857 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:50,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 91 [2023-08-26 10:14:50,875 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:50,876 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2023-08-26 10:14:55,190 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:55,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 785 treesize of output 1209 [2023-08-26 10:14:55,378 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:14:55,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 67 [2023-08-26 10:15:01,266 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 10:15:02,986 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 10:15:33,043 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 10:17:18,036 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 10:18:16,038 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 10:20:20,183 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. Received shutdown request... [2023-08-26 10:26:26,702 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-26 10:26:26,705 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONASSERT (63 of 64 remaining) [2023-08-26 10:26:26,707 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 [2023-08-26 10:26:26,709 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 10:26:26,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 10:26:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 10:26:26,906 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (62 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (61 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (60 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (59 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (58 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (57 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (56 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (55 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (54 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (53 of 64 remaining) [2023-08-26 10:26:26,908 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (52 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (51 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (50 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (49 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONDATA_RACE (48 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONDATA_RACE (47 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONDATA_RACE (46 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONDATA_RACE (45 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONDATA_RACE (44 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONDATA_RACE (43 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONDATA_RACE (42 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONDATA_RACE (41 of 64 remaining) [2023-08-26 10:26:26,909 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (40 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (39 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (38 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (37 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (36 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (35 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (34 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (33 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (32 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (31 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (30 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (29 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (28 of 64 remaining) [2023-08-26 10:26:26,910 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (27 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (26 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (25 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (21 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (20 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (19 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (18 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (17 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (16 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (15 of 64 remaining) [2023-08-26 10:26:26,911 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (14 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (13 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (12 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (11 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (10 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (9 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (8 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONDATA_RACE (7 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONDATA_RACE (6 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2ASSERT_VIOLATIONDATA_RACE (5 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3ASSERT_VIOLATIONDATA_RACE (4 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4ASSERT_VIOLATIONDATA_RACE (3 of 64 remaining) [2023-08-26 10:26:26,912 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5ASSERT_VIOLATIONDATA_RACE (2 of 64 remaining) [2023-08-26 10:26:26,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6ASSERT_VIOLATIONDATA_RACE (1 of 64 remaining) [2023-08-26 10:26:26,913 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7ASSERT_VIOLATIONDATA_RACE (0 of 64 remaining) [2023-08-26 10:26:26,913 INFO L445 BasicCegarLoop]: Path program histogram: [18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:26:26,918 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 10:26:26,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 10:26:26,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:26:26 BasicIcfg [2023-08-26 10:26:26,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 10:26:26,921 INFO L158 Benchmark]: Toolchain (without parser) took 828422.82ms. Allocated memory was 327.2MB in the beginning and 2.5GB in the end (delta: 2.1GB). Free memory was 303.7MB in the beginning and 1.2GB in the end (delta: -926.5MB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-26 10:26:26,922 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 327.2MB. Free memory is still 304.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 10:26:26,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.72ms. Allocated memory is still 327.2MB. Free memory was 303.7MB in the beginning and 291.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 10:26:26,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.98ms. Allocated memory is still 327.2MB. Free memory was 291.4MB in the beginning and 289.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:26:26,926 INFO L158 Benchmark]: Boogie Preprocessor took 38.59ms. Allocated memory is still 327.2MB. Free memory was 289.3MB in the beginning and 286.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:26:26,926 INFO L158 Benchmark]: RCFGBuilder took 786.17ms. Allocated memory is still 327.2MB. Free memory was 286.5MB in the beginning and 230.5MB in the end (delta: 55.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. [2023-08-26 10:26:26,926 INFO L158 Benchmark]: TraceAbstraction took 827231.08ms. Allocated memory was 327.2MB in the beginning and 2.5GB in the end (delta: 2.1GB). Free memory was 229.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-26 10:26:26,929 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 327.2MB. Free memory is still 304.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 302.72ms. Allocated memory is still 327.2MB. Free memory was 303.7MB in the beginning and 291.4MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.98ms. Allocated memory is still 327.2MB. Free memory was 291.4MB in the beginning and 289.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.59ms. Allocated memory is still 327.2MB. Free memory was 289.3MB in the beginning and 286.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 786.17ms. Allocated memory is still 327.2MB. Free memory was 286.5MB in the beginning and 230.5MB in the end (delta: 55.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. * TraceAbstraction took 827231.08ms. Allocated memory was 327.2MB in the beginning and 2.5GB in the end (delta: 2.1GB). Free memory was 229.8MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1s, 240 PlacesBefore, 87 PlacesAfterwards, 244 TransitionsBefore, 84 TransitionsAfterwards, 5682 CoEnabledTransitionPairs, 8 FixpointIterations, 152 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 8 ConcurrentYvCompositions, 7 ChoiceCompositions, 246 TotalNumberOfCompositions, 35801 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12238, independent: 11438, independent conditional: 0, independent unconditional: 11438, dependent: 800, dependent conditional: 0, dependent unconditional: 800, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2902, independent: 2776, independent conditional: 0, independent unconditional: 2776, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12238, independent: 8662, independent conditional: 0, independent unconditional: 8662, dependent: 674, dependent conditional: 0, dependent unconditional: 674, unknown: 2902, unknown conditional: 0, unknown unconditional: 2902] , Statistics on independence cache: Total cache size (in pairs): 626, Positive cache size: 562, Positive conditional cache size: 0, Positive unconditional cache size: 562, Negative cache size: 64, Negative conditional cache size: 0, Negative unconditional cache size: 64, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 51 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 48ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 308 locations, 64 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 827.1s, OverallIterations: 29, TraceHistogramMax: 3, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 47.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.2s, HoareTripleCheckerStatistics: 34 mSolverCounterUnknown, 3706 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3706 mSDsluCounter, 2291 SdHoareTripleChecker+Invalid, 11.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 372 IncrementalHoareTripleChecker+Unchecked, 2017 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13094 IncrementalHoareTripleChecker+Invalid, 13673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 274 mSDtfsCounter, 13094 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2134 GetRequests, 1489 SyntacticMatches, 40 SemanticMatches, 605 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4951 ImplicationChecksByTransitivity, 39.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12611occurred in iteration=26, InterpolantAutomatonStates: 375, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 55.6s InterpolantComputationTime, 1893 NumberOfCodeBlocks, 1879 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 2702 ConstructedInterpolants, 20 QuantifiedInterpolants, 33394 SizeOfPredicates, 228 NumberOfNonLiveVariables, 7784 ConjunctsInSsa, 357 ConjunctsInUnsatCore, 68 InterpolantComputations, 9 PerfectInterpolantSequences, 240/487 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown