/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 19:38:45,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 19:38:45,530 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 19:38:45,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 19:38:45,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 19:38:45,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 19:38:45,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 19:38:45,548 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 19:38:45,548 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 19:38:45,548 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 19:38:45,550 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 19:38:45,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 19:38:45,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 19:38:45,555 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 19:38:45,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 19:38:45,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 19:38:45,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 19:38:45,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 19:38:45,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 19:38:45,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 19:38:45,556 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 19:38:45,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 19:38:45,557 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 19:38:45,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 19:38:45,557 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 19:38:45,557 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 19:38:45,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 19:38:45,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:38:45,558 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 19:38:45,558 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 19:38:45,558 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 19:38:45,558 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 19:38:45,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 19:38:45,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 19:38:45,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 19:38:45,559 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 19:38:45,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 19:38:45,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 19:38:45,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 19:38:45,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 19:38:45,811 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 19:38:45,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-08-25 19:38:46,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 19:38:46,946 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 19:38:46,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2023-08-25 19:38:46,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3b291a5/55d62f67bac34745afdba416cbec75c9/FLAG6181e3484 [2023-08-25 19:38:46,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f3b291a5/55d62f67bac34745afdba416cbec75c9 [2023-08-25 19:38:46,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 19:38:46,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 19:38:46,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 19:38:46,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 19:38:46,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 19:38:46,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:38:46" (1/1) ... [2023-08-25 19:38:46,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523894bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:46, skipping insertion in model container [2023-08-25 19:38:46,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:38:46" (1/1) ... [2023-08-25 19:38:46,996 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 19:38:47,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:38:47,129 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 19:38:47,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:38:47,160 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 19:38:47,160 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 19:38:47,165 INFO L206 MainTranslator]: Completed translation [2023-08-25 19:38:47,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47 WrapperNode [2023-08-25 19:38:47,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 19:38:47,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 19:38:47,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 19:38:47,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 19:38:47,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,199 INFO L138 Inliner]: procedures = 25, calls = 90, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 502 [2023-08-25 19:38:47,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 19:38:47,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 19:38:47,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 19:38:47,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 19:38:47,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 19:38:47,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 19:38:47,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 19:38:47,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 19:38:47,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (1/1) ... [2023-08-25 19:38:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:38:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:38:47,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 19:38:47,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 19:38:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 19:38:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 19:38:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 19:38:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 19:38:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 19:38:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 19:38:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 19:38:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 19:38:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 19:38:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 19:38:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 19:38:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 19:38:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 19:38:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 19:38:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 19:38:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 19:38:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 19:38:47,362 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 19:38:47,470 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 19:38:47,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 19:38:47,974 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 19:38:48,141 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 19:38:48,141 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-25 19:38:48,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:38:48 BoogieIcfgContainer [2023-08-25 19:38:48,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 19:38:48,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 19:38:48,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 19:38:48,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 19:38:48,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:38:46" (1/3) ... [2023-08-25 19:38:48,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3343ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:38:48, skipping insertion in model container [2023-08-25 19:38:48,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:38:47" (2/3) ... [2023-08-25 19:38:48,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3343ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:38:48, skipping insertion in model container [2023-08-25 19:38:48,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:38:48" (3/3) ... [2023-08-25 19:38:48,149 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2023-08-25 19:38:48,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 19:38:48,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-08-25 19:38:48,161 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 19:38:48,235 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 19:38:48,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 348 transitions, 720 flow [2023-08-25 19:38:48,375 INFO L124 PetriNetUnfolderBase]: 8/345 cut-off events. [2023-08-25 19:38:48,375 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 19:38:48,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 345 events. 8/345 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 440 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 278. Up to 2 conditions per place. [2023-08-25 19:38:48,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 348 transitions, 720 flow [2023-08-25 19:38:48,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 334 transitions, 686 flow [2023-08-25 19:38:48,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 19:38:48,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 336 places, 334 transitions, 686 flow [2023-08-25 19:38:48,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 336 places, 334 transitions, 686 flow [2023-08-25 19:38:48,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 334 transitions, 686 flow [2023-08-25 19:38:48,442 INFO L124 PetriNetUnfolderBase]: 8/334 cut-off events. [2023-08-25 19:38:48,442 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 19:38:48,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 8/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 442 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 278. Up to 2 conditions per place. [2023-08-25 19:38:48,446 INFO L119 LiptonReduction]: Number of co-enabled transitions 7840 [2023-08-25 19:38:54,342 INFO L134 LiptonReduction]: Checked pairs total: 97239 [2023-08-25 19:38:54,342 INFO L136 LiptonReduction]: Total number of compositions: 315 [2023-08-25 19:38:54,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 19:38:54,372 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;@23b0e95a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 19:38:54,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 130 error locations. [2023-08-25 19:38:54,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 19:38:54,377 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 19:38:54,377 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:38:54,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:54,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 19:38:54,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:54,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1706, now seen corresponding path program 1 times [2023-08-25 19:38:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:54,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711464734] [2023-08-25 19:38:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:38:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:38:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:38:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:38:54,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711464734] [2023-08-25 19:38:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711464734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:38:54,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:38:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 19:38:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855839779] [2023-08-25 19:38:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:38:54,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 19:38:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:38:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 19:38:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 19:38:54,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 663 [2023-08-25 19:38:54,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 125 transitions, 268 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:54,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:38:54,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 663 [2023-08-25 19:38:54,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:38:54,949 INFO L124 PetriNetUnfolderBase]: 2616/4308 cut-off events. [2023-08-25 19:38:54,949 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2023-08-25 19:38:54,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8576 conditions, 4308 events. 2616/4308 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 21413 event pairs, 2615 based on Foata normal form. 0/4235 useless extension candidates. Maximal degree in co-relation 7772. Up to 3949 conditions per place. [2023-08-25 19:38:54,968 INFO L140 encePairwiseOnDemand]: 591/663 looper letters, 38 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-25 19:38:54,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 200 flow [2023-08-25 19:38:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 19:38:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 19:38:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 632 transitions. [2023-08-25 19:38:54,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766214177978884 [2023-08-25 19:38:54,982 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 632 transitions. [2023-08-25 19:38:54,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 632 transitions. [2023-08-25 19:38:54,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:38:54,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 632 transitions. [2023-08-25 19:38:54,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 316.0) internal successors, (632), 2 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:54,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 663.0) internal successors, (1989), 3 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:54,994 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 663.0) internal successors, (1989), 3 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:54,995 INFO L175 Difference]: Start difference. First operand has 134 places, 125 transitions, 268 flow. Second operand 2 states and 632 transitions. [2023-08-25 19:38:54,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 200 flow [2023-08-25 19:38:55,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 19:38:55,005 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 112 flow [2023-08-25 19:38:55,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-08-25 19:38:55,009 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -77 predicate places. [2023-08-25 19:38:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 112 flow [2023-08-25 19:38:55,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:55,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:55,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:38:55,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 19:38:55,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:55,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:55,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1167806677, now seen corresponding path program 1 times [2023-08-25 19:38:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:55,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934397126] [2023-08-25 19:38:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:38:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:38:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:38:55,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:38:55,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934397126] [2023-08-25 19:38:55,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934397126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:38:55,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:38:55,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:38:55,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161801409] [2023-08-25 19:38:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:38:55,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:38:55,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:38:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:38:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:38:55,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 663 [2023-08-25 19:38:55,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:55,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:38:55,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 663 [2023-08-25 19:38:55,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:38:55,734 INFO L124 PetriNetUnfolderBase]: 2616/4309 cut-off events. [2023-08-25 19:38:55,735 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-25 19:38:55,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8394 conditions, 4309 events. 2616/4309 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 21413 event pairs, 2615 based on Foata normal form. 0/4236 useless extension candidates. Maximal degree in co-relation 8391. Up to 3949 conditions per place. [2023-08-25 19:38:55,751 INFO L140 encePairwiseOnDemand]: 660/663 looper letters, 37 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-25 19:38:55,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 192 flow [2023-08-25 19:38:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:38:55,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:38:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 757 transitions. [2023-08-25 19:38:55,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805932629462041 [2023-08-25 19:38:55,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 757 transitions. [2023-08-25 19:38:55,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 757 transitions. [2023-08-25 19:38:55,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:38:55,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 757 transitions. [2023-08-25 19:38:55,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:55,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:55,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:55,761 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 112 flow. Second operand 3 states and 757 transitions. [2023-08-25 19:38:55,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 192 flow [2023-08-25 19:38:55,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:38:55,762 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 124 flow [2023-08-25 19:38:55,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-25 19:38:55,764 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -74 predicate places. [2023-08-25 19:38:55,764 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 124 flow [2023-08-25 19:38:55,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:55,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:55,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:38:55,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 19:38:55,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:55,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1912111256, now seen corresponding path program 1 times [2023-08-25 19:38:55,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033609563] [2023-08-25 19:38:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:55,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:38:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:38:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:38:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:38:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033609563] [2023-08-25 19:38:56,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033609563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:38:56,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:38:56,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:38:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117351075] [2023-08-25 19:38:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:38:56,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:38:56,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:38:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:38:56,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:38:56,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 663 [2023-08-25 19:38:56,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 233.16666666666666) internal successors, (1399), 6 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:56,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:38:56,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 663 [2023-08-25 19:38:56,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:38:56,963 INFO L124 PetriNetUnfolderBase]: 7968/11477 cut-off events. [2023-08-25 19:38:56,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:38:56,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23097 conditions, 11477 events. 7968/11477 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 58240 event pairs, 1220 based on Foata normal form. 0/11428 useless extension candidates. Maximal degree in co-relation 23092. Up to 4324 conditions per place. [2023-08-25 19:38:56,999 INFO L140 encePairwiseOnDemand]: 658/663 looper letters, 141 selfloop transitions, 4 changer transitions 0/145 dead transitions. [2023-08-25 19:38:56,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 145 transitions, 596 flow [2023-08-25 19:38:56,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:38:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:38:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1531 transitions. [2023-08-25 19:38:57,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3848667672197084 [2023-08-25 19:38:57,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1531 transitions. [2023-08-25 19:38:57,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1531 transitions. [2023-08-25 19:38:57,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:38:57,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1531 transitions. [2023-08-25 19:38:57,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 255.16666666666666) internal successors, (1531), 6 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:57,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:57,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:57,011 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 124 flow. Second operand 6 states and 1531 transitions. [2023-08-25 19:38:57,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 145 transitions, 596 flow [2023-08-25 19:38:57,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 145 transitions, 592 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 19:38:57,013 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 126 flow [2023-08-25 19:38:57,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-08-25 19:38:57,014 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -71 predicate places. [2023-08-25 19:38:57,014 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 126 flow [2023-08-25 19:38:57,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.16666666666666) internal successors, (1399), 6 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:57,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:57,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:38:57,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 19:38:57,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:57,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 595447950, now seen corresponding path program 1 times [2023-08-25 19:38:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554810219] [2023-08-25 19:38:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:38:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:38:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:38:57,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:38:57,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554810219] [2023-08-25 19:38:57,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554810219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:38:57,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:38:57,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:38:57,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013866136] [2023-08-25 19:38:57,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:38:57,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:38:57,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:38:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:38:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:38:57,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 663 [2023-08-25 19:38:57,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 235.83333333333334) internal successors, (1415), 6 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:57,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:38:57,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 663 [2023-08-25 19:38:57,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:38:58,135 INFO L124 PetriNetUnfolderBase]: 7895/11360 cut-off events. [2023-08-25 19:38:58,135 INFO L125 PetriNetUnfolderBase]: For 1695/1695 co-relation queries the response was YES. [2023-08-25 19:38:58,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24797 conditions, 11360 events. 7895/11360 cut-off events. For 1695/1695 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 54289 event pairs, 7508 based on Foata normal form. 0/11355 useless extension candidates. Maximal degree in co-relation 24792. Up to 10725 conditions per place. [2023-08-25 19:38:58,172 INFO L140 encePairwiseOnDemand]: 658/663 looper letters, 100 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2023-08-25 19:38:58,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 436 flow [2023-08-25 19:38:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:38:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:38:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1490 transitions. [2023-08-25 19:38:58,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3745600804424334 [2023-08-25 19:38:58,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1490 transitions. [2023-08-25 19:38:58,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1490 transitions. [2023-08-25 19:38:58,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:38:58,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1490 transitions. [2023-08-25 19:38:58,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 248.33333333333334) internal successors, (1490), 6 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:58,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:58,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:58,183 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 126 flow. Second operand 6 states and 1490 transitions. [2023-08-25 19:38:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 436 flow [2023-08-25 19:38:58,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 104 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:38:58,188 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 125 flow [2023-08-25 19:38:58,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-08-25 19:38:58,188 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -71 predicate places. [2023-08-25 19:38:58,188 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 125 flow [2023-08-25 19:38:58,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.83333333333334) internal successors, (1415), 6 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:58,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:38:58,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 19:38:58,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:58,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash 616087645, now seen corresponding path program 1 times [2023-08-25 19:38:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680207920] [2023-08-25 19:38:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:58,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:38:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:38:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:38:58,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:38:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680207920] [2023-08-25 19:38:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680207920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:38:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:38:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:38:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076349233] [2023-08-25 19:38:58,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:38:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:38:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:38:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:38:58,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:38:58,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 663 [2023-08-25 19:38:58,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 238.5) internal successors, (1431), 6 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:58,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:38:58,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 663 [2023-08-25 19:38:58,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:38:59,404 INFO L124 PetriNetUnfolderBase]: 7892/11353 cut-off events. [2023-08-25 19:38:59,405 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-25 19:38:59,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23507 conditions, 11353 events. 7892/11353 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 54240 event pairs, 7876 based on Foata normal form. 0/11352 useless extension candidates. Maximal degree in co-relation 23502. Up to 11317 conditions per place. [2023-08-25 19:38:59,462 INFO L140 encePairwiseOnDemand]: 658/663 looper letters, 59 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-25 19:38:59,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 273 flow [2023-08-25 19:38:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:38:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:38:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1449 transitions. [2023-08-25 19:38:59,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36425339366515835 [2023-08-25 19:38:59,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1449 transitions. [2023-08-25 19:38:59,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1449 transitions. [2023-08-25 19:38:59,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:38:59,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1449 transitions. [2023-08-25 19:38:59,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.5) internal successors, (1449), 6 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 663.0) internal successors, (4641), 7 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,474 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 125 flow. Second operand 6 states and 1449 transitions. [2023-08-25 19:38:59,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 273 flow [2023-08-25 19:38:59,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 266 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:38:59,477 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 124 flow [2023-08-25 19:38:59,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-25 19:38:59,478 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -71 predicate places. [2023-08-25 19:38:59,478 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 124 flow [2023-08-25 19:38:59,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.5) internal successors, (1431), 6 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:59,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:38:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 19:38:59,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:59,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -291939664, now seen corresponding path program 1 times [2023-08-25 19:38:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780750586] [2023-08-25 19:38:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:38:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:38:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:38:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:38:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780750586] [2023-08-25 19:38:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780750586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:38:59,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:38:59,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:38:59,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550997994] [2023-08-25 19:38:59,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:38:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:38:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:38:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:38:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:38:59,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 663 [2023-08-25 19:38:59,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:38:59,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 663 [2023-08-25 19:38:59,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:38:59,953 INFO L124 PetriNetUnfolderBase]: 2586/4111 cut-off events. [2023-08-25 19:38:59,953 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-25 19:38:59,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8231 conditions, 4111 events. 2586/4111 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20085 event pairs, 1877 based on Foata normal form. 30/4140 useless extension candidates. Maximal degree in co-relation 8226. Up to 2858 conditions per place. [2023-08-25 19:38:59,967 INFO L140 encePairwiseOnDemand]: 660/663 looper letters, 54 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-25 19:38:59,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 272 flow [2023-08-25 19:38:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:38:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:38:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-08-25 19:38:59,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2023-08-25 19:38:59,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-08-25 19:38:59,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-08-25 19:38:59,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:38:59,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-08-25 19:38:59,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,974 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 124 flow. Second operand 3 states and 833 transitions. [2023-08-25 19:38:59,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 272 flow [2023-08-25 19:38:59,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 68 transitions, 265 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:38:59,977 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 125 flow [2023-08-25 19:38:59,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-08-25 19:38:59,978 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -72 predicate places. [2023-08-25 19:38:59,980 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 125 flow [2023-08-25 19:38:59,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:38:59,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:38:59,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:38:59,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 19:38:59,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:38:59,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:38:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash -213082408, now seen corresponding path program 2 times [2023-08-25 19:38:59,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:38:59,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012229679] [2023-08-25 19:38:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:38:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012229679] [2023-08-25 19:39:00,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012229679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:00,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:39:00,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:39:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286142676] [2023-08-25 19:39:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:00,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:39:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:39:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:39:00,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 663 [2023-08-25 19:39:00,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:00,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:00,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 663 [2023-08-25 19:39:00,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:00,893 INFO L124 PetriNetUnfolderBase]: 4270/6821 cut-off events. [2023-08-25 19:39:00,893 INFO L125 PetriNetUnfolderBase]: For 506/508 co-relation queries the response was YES. [2023-08-25 19:39:00,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14260 conditions, 6821 events. 4270/6821 cut-off events. For 506/508 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 36637 event pairs, 1155 based on Foata normal form. 72/6890 useless extension candidates. Maximal degree in co-relation 14254. Up to 2237 conditions per place. [2023-08-25 19:39:00,916 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 141 selfloop transitions, 16 changer transitions 0/169 dead transitions. [2023-08-25 19:39:00,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 169 transitions, 712 flow [2023-08-25 19:39:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:39:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:39:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2434 transitions. [2023-08-25 19:39:00,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40791017261605494 [2023-08-25 19:39:00,921 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2434 transitions. [2023-08-25 19:39:00,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2434 transitions. [2023-08-25 19:39:00,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:00,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2434 transitions. [2023-08-25 19:39:00,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 270.44444444444446) internal successors, (2434), 9 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:00,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:00,930 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:00,931 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 125 flow. Second operand 9 states and 2434 transitions. [2023-08-25 19:39:00,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 169 transitions, 712 flow [2023-08-25 19:39:00,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 169 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 19:39:00,935 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 217 flow [2023-08-25 19:39:00,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=217, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-25 19:39:00,936 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -61 predicate places. [2023-08-25 19:39:00,937 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 217 flow [2023-08-25 19:39:00,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:00,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:00,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:00,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 19:39:00,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:00,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:00,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1830266752, now seen corresponding path program 3 times [2023-08-25 19:39:00,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:00,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805552098] [2023-08-25 19:39:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:00,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805552098] [2023-08-25 19:39:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805552098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:39:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 19:39:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210377399] [2023-08-25 19:39:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:39:01,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:39:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:39:01,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 663 [2023-08-25 19:39:01,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:01,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:01,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 663 [2023-08-25 19:39:01,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:01,537 INFO L124 PetriNetUnfolderBase]: 3978/6479 cut-off events. [2023-08-25 19:39:01,537 INFO L125 PetriNetUnfolderBase]: For 1299/1299 co-relation queries the response was YES. [2023-08-25 19:39:01,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14746 conditions, 6479 events. 3978/6479 cut-off events. For 1299/1299 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 35452 event pairs, 2971 based on Foata normal form. 60/6538 useless extension candidates. Maximal degree in co-relation 14735. Up to 4922 conditions per place. [2023-08-25 19:39:01,567 INFO L140 encePairwiseOnDemand]: 660/663 looper letters, 72 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-25 19:39:01,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 434 flow [2023-08-25 19:39:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:39:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:39:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-08-25 19:39:01,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2023-08-25 19:39:01,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-08-25 19:39:01,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-08-25 19:39:01,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:01,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-08-25 19:39:01,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:01,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:01,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 663.0) internal successors, (2652), 4 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:01,573 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 217 flow. Second operand 3 states and 833 transitions. [2023-08-25 19:39:01,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 434 flow [2023-08-25 19:39:01,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:39:01,589 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 225 flow [2023-08-25 19:39:01,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-08-25 19:39:01,590 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -58 predicate places. [2023-08-25 19:39:01,590 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 225 flow [2023-08-25 19:39:01,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:01,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:01,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:01,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 19:39:01,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:01,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1392358852, now seen corresponding path program 4 times [2023-08-25 19:39:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381656234] [2023-08-25 19:39:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:02,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381656234] [2023-08-25 19:39:02,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381656234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:39:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932780473] [2023-08-25 19:39:02,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:39:02,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:39:02,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:39:02,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 19:39:03,211 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:39:03,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:39:03,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:39:03,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:39:03,452 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:39:03,452 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:39:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:03,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:39:03,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932780473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:03,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:39:03,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 18 [2023-08-25 19:39:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100860706] [2023-08-25 19:39:03,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:03,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:39:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:39:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-08-25 19:39:03,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:39:03,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 225 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:03,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:03,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:39:03,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:04,451 INFO L124 PetriNetUnfolderBase]: 4246/7141 cut-off events. [2023-08-25 19:39:04,452 INFO L125 PetriNetUnfolderBase]: For 2643/2646 co-relation queries the response was YES. [2023-08-25 19:39:04,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16887 conditions, 7141 events. 4246/7141 cut-off events. For 2643/2646 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 41299 event pairs, 665 based on Foata normal form. 3/7143 useless extension candidates. Maximal degree in co-relation 16874. Up to 3360 conditions per place. [2023-08-25 19:39:04,490 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 159 selfloop transitions, 14 changer transitions 29/214 dead transitions. [2023-08-25 19:39:04,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 214 transitions, 1181 flow [2023-08-25 19:39:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:39:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:39:04,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2532 transitions. [2023-08-25 19:39:04,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38190045248868776 [2023-08-25 19:39:04,495 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2532 transitions. [2023-08-25 19:39:04,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2532 transitions. [2023-08-25 19:39:04,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:04,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2532 transitions. [2023-08-25 19:39:04,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 253.2) internal successors, (2532), 10 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:04,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:04,512 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:04,512 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 225 flow. Second operand 10 states and 2532 transitions. [2023-08-25 19:39:04,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 214 transitions, 1181 flow [2023-08-25 19:39:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 214 transitions, 1157 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 19:39:04,527 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 304 flow [2023-08-25 19:39:04,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-08-25 19:39:04,528 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -46 predicate places. [2023-08-25 19:39:04,528 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 304 flow [2023-08-25 19:39:04,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:04,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:04,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:04,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 19:39:04,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:04,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:04,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:04,736 INFO L85 PathProgramCache]: Analyzing trace with hash -283064044, now seen corresponding path program 5 times [2023-08-25 19:39:04,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:04,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439410841] [2023-08-25 19:39:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:04,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:04,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:04,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439410841] [2023-08-25 19:39:04,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439410841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:04,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:39:04,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:39:04,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993447170] [2023-08-25 19:39:04,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:04,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:39:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:04,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:39:04,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:39:04,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 663 [2023-08-25 19:39:04,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:04,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:04,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 663 [2023-08-25 19:39:04,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:06,007 INFO L124 PetriNetUnfolderBase]: 5695/9586 cut-off events. [2023-08-25 19:39:06,008 INFO L125 PetriNetUnfolderBase]: For 5128/5137 co-relation queries the response was YES. [2023-08-25 19:39:06,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25556 conditions, 9586 events. 5695/9586 cut-off events. For 5128/5137 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 58330 event pairs, 1721 based on Foata normal form. 66/9652 useless extension candidates. Maximal degree in co-relation 25538. Up to 6253 conditions per place. [2023-08-25 19:39:06,054 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 175 selfloop transitions, 15 changer transitions 0/202 dead transitions. [2023-08-25 19:39:06,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 202 transitions, 1151 flow [2023-08-25 19:39:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:39:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:39:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2419 transitions. [2023-08-25 19:39:06,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40539634657281715 [2023-08-25 19:39:06,059 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2419 transitions. [2023-08-25 19:39:06,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2419 transitions. [2023-08-25 19:39:06,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:06,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2419 transitions. [2023-08-25 19:39:06,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 268.77777777777777) internal successors, (2419), 9 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:06,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:06,068 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:06,068 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 304 flow. Second operand 9 states and 2419 transitions. [2023-08-25 19:39:06,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 202 transitions, 1151 flow [2023-08-25 19:39:06,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 202 transitions, 1145 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-25 19:39:06,088 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 436 flow [2023-08-25 19:39:06,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=436, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2023-08-25 19:39:06,089 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -36 predicate places. [2023-08-25 19:39:06,089 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 436 flow [2023-08-25 19:39:06,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:06,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:06,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:06,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 19:39:06,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:06,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -652546390, now seen corresponding path program 6 times [2023-08-25 19:39:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:06,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109242428] [2023-08-25 19:39:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:06,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:06,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:06,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109242428] [2023-08-25 19:39:06,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109242428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:06,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:39:06,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:39:06,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557866937] [2023-08-25 19:39:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:06,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:39:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:39:06,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:39:06,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 663 [2023-08-25 19:39:06,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 436 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:06,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:06,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 663 [2023-08-25 19:39:06,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:07,414 INFO L124 PetriNetUnfolderBase]: 6200/10623 cut-off events. [2023-08-25 19:39:07,414 INFO L125 PetriNetUnfolderBase]: For 7841/7862 co-relation queries the response was YES. [2023-08-25 19:39:07,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29271 conditions, 10623 events. 6200/10623 cut-off events. For 7841/7862 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 67250 event pairs, 1723 based on Foata normal form. 66/10689 useless extension candidates. Maximal degree in co-relation 29248. Up to 7154 conditions per place. [2023-08-25 19:39:07,468 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 198 selfloop transitions, 18 changer transitions 0/228 dead transitions. [2023-08-25 19:39:07,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 228 transitions, 1383 flow [2023-08-25 19:39:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:39:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:39:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2944 transitions. [2023-08-25 19:39:07,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036747566159331 [2023-08-25 19:39:07,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2944 transitions. [2023-08-25 19:39:07,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2944 transitions. [2023-08-25 19:39:07,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:07,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2944 transitions. [2023-08-25 19:39:07,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 267.6363636363636) internal successors, (2944), 11 states have internal predecessors, (2944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:07,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:07,485 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:07,485 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 436 flow. Second operand 11 states and 2944 transitions. [2023-08-25 19:39:07,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 228 transitions, 1383 flow [2023-08-25 19:39:07,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 228 transitions, 1381 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 19:39:07,522 INFO L231 Difference]: Finished difference. Result has 114 places, 97 transitions, 559 flow [2023-08-25 19:39:07,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=114, PETRI_TRANSITIONS=97} [2023-08-25 19:39:07,522 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -20 predicate places. [2023-08-25 19:39:07,522 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 97 transitions, 559 flow [2023-08-25 19:39:07,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:07,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:07,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:07,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 19:39:07,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:07,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1300719924, now seen corresponding path program 7 times [2023-08-25 19:39:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:07,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250854760] [2023-08-25 19:39:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:07,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250854760] [2023-08-25 19:39:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250854760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:39:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294748688] [2023-08-25 19:39:08,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:39:08,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:39:08,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:39:08,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 19:39:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:08,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 19:39:08,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:39:08,685 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 [2023-08-25 19:39:08,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 19:39:08,757 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 19:39:08,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 19:39:09,347 INFO L322 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2023-08-25 19:39:09,347 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 34 treesize of output 16 [2023-08-25 19:39:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:09,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:39:10,001 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_816 (Array Int Int)) (~i~0 Int) (v_~j~0_244 Int)) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_816) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ (* ~i~0 4) c_~f~0.offset)))) (or (< ~i~0 0) (<= c_~n~0 ~i~0) (< .cse0 0) (< v_~j~0_244 (select .cse1 (+ c_~f~0.offset (* c_~j~0 4)))) (< v_~j~0_244 0) (= .cse0 (select .cse1 (+ c_~f~0.offset (* v_~j~0_244 4)))) (<= c_~n~0 v_~j~0_244) (<= c_~n~0 .cse0))))) is different from false [2023-08-25 19:39:10,128 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_816 (Array Int Int)) (v_ArrVal_815 (Array Int Int)) (~i~0 Int) (v_~j~0_244 Int)) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_815) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_816) c_~f~0.base))) (let ((.cse0 (select .cse1 (+ (* ~i~0 4) c_~f~0.offset)))) (or (< ~i~0 0) (<= c_~n~0 ~i~0) (<= c_~n~0 .cse0) (< v_~j~0_244 (select .cse1 (+ c_~f~0.offset (* c_~j~0 4)))) (< v_~j~0_244 0) (= (select .cse1 (+ c_~f~0.offset (* v_~j~0_244 4))) .cse0) (< .cse0 0) (<= c_~n~0 v_~j~0_244))))) is different from false [2023-08-25 19:39:10,287 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:39:10,287 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 158 treesize of output 110 [2023-08-25 19:39:10,319 INFO L322 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2023-08-25 19:39:10,319 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 1289 treesize of output 1228 [2023-08-25 19:39:10,369 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-25 19:39:10,369 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 583 treesize of output 539 [2023-08-25 19:39:10,401 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-25 19:39:10,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 523 treesize of output 419 [2023-08-25 19:39:10,437 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-25 19:39:10,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 215 treesize of output 201 [2023-08-25 19:39:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294748688] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:39:11,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:39:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-08-25 19:39:11,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323955223] [2023-08-25 19:39:11,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:39:11,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 19:39:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 19:39:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=986, Unknown=2, NotChecked=134, Total=1332 [2023-08-25 19:39:11,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 663 [2023-08-25 19:39:11,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 97 transitions, 559 flow. Second operand has 37 states, 37 states have (on average 182.67567567567568) internal successors, (6759), 37 states have internal predecessors, (6759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:11,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:11,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 663 [2023-08-25 19:39:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:26,554 INFO L124 PetriNetUnfolderBase]: 71220/108940 cut-off events. [2023-08-25 19:39:26,554 INFO L125 PetriNetUnfolderBase]: For 112686/112686 co-relation queries the response was YES. [2023-08-25 19:39:27,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310832 conditions, 108940 events. 71220/108940 cut-off events. For 112686/112686 co-relation queries the response was YES. Maximal size of possible extension queue 2727. Compared 840815 event pairs, 5426 based on Foata normal form. 49/108989 useless extension candidates. Maximal degree in co-relation 310802. Up to 21109 conditions per place. [2023-08-25 19:39:27,248 INFO L140 encePairwiseOnDemand]: 650/663 looper letters, 749 selfloop transitions, 53 changer transitions 808/1610 dead transitions. [2023-08-25 19:39:27,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1610 transitions, 10786 flow [2023-08-25 19:39:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-25 19:39:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-25 19:39:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 10114 transitions. [2023-08-25 19:39:27,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3050980392156863 [2023-08-25 19:39:27,266 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 10114 transitions. [2023-08-25 19:39:27,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 10114 transitions. [2023-08-25 19:39:27,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:27,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 10114 transitions. [2023-08-25 19:39:27,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 202.28) internal successors, (10114), 50 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:27,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 663.0) internal successors, (33813), 51 states have internal predecessors, (33813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:27,309 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 663.0) internal successors, (33813), 51 states have internal predecessors, (33813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:27,309 INFO L175 Difference]: Start difference. First operand has 114 places, 97 transitions, 559 flow. Second operand 50 states and 10114 transitions. [2023-08-25 19:39:27,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 1610 transitions, 10786 flow [2023-08-25 19:39:29,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 1610 transitions, 10571 flow, removed 95 selfloop flow, removed 1 redundant places. [2023-08-25 19:39:29,673 INFO L231 Difference]: Finished difference. Result has 201 places, 149 transitions, 1094 flow [2023-08-25 19:39:29,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1094, PETRI_PLACES=201, PETRI_TRANSITIONS=149} [2023-08-25 19:39:29,673 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 67 predicate places. [2023-08-25 19:39:29,673 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 149 transitions, 1094 flow [2023-08-25 19:39:29,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 182.67567567567568) internal successors, (6759), 37 states have internal predecessors, (6759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:29,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:29,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:29,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 19:39:29,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-25 19:39:29,884 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:29,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:29,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1163199096, now seen corresponding path program 8 times [2023-08-25 19:39:29,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:29,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115079810] [2023-08-25 19:39:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:31,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115079810] [2023-08-25 19:39:31,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115079810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:39:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208835100] [2023-08-25 19:39:31,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:39:31,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:31,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:39:31,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:39:31,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 19:39:31,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:39:31,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:39:31,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 19:39:31,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:39:31,611 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:39:31,612 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:39:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:31,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:39:31,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208835100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:31,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:39:31,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 19 [2023-08-25 19:39:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109543153] [2023-08-25 19:39:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:31,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:39:31,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:39:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:39:31,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:39:31,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 149 transitions, 1094 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:31,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:31,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:39:31,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:36,354 INFO L124 PetriNetUnfolderBase]: 18895/33760 cut-off events. [2023-08-25 19:39:36,355 INFO L125 PetriNetUnfolderBase]: For 699082/699355 co-relation queries the response was YES. [2023-08-25 19:39:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181100 conditions, 33760 events. 18895/33760 cut-off events. For 699082/699355 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 282331 event pairs, 4519 based on Foata normal form. 73/33785 useless extension candidates. Maximal degree in co-relation 181031. Up to 17325 conditions per place. [2023-08-25 19:39:36,649 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 304 selfloop transitions, 43 changer transitions 42/401 dead transitions. [2023-08-25 19:39:36,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 401 transitions, 3922 flow [2023-08-25 19:39:36,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:39:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:39:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2302 transitions. [2023-08-25 19:39:36,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38578850343556226 [2023-08-25 19:39:36,651 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2302 transitions. [2023-08-25 19:39:36,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2302 transitions. [2023-08-25 19:39:36,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:36,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2302 transitions. [2023-08-25 19:39:36,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.77777777777777) internal successors, (2302), 9 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:36,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:36,657 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:36,657 INFO L175 Difference]: Start difference. First operand has 201 places, 149 transitions, 1094 flow. Second operand 9 states and 2302 transitions. [2023-08-25 19:39:36,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 401 transitions, 3922 flow [2023-08-25 19:39:41,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 401 transitions, 3280 flow, removed 306 selfloop flow, removed 29 redundant places. [2023-08-25 19:39:41,350 INFO L231 Difference]: Finished difference. Result has 157 places, 186 transitions, 1282 flow [2023-08-25 19:39:41,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1282, PETRI_PLACES=157, PETRI_TRANSITIONS=186} [2023-08-25 19:39:41,350 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 23 predicate places. [2023-08-25 19:39:41,350 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 186 transitions, 1282 flow [2023-08-25 19:39:41,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:41,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:41,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:41,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 19:39:41,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:41,556 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:41,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash 300164774, now seen corresponding path program 9 times [2023-08-25 19:39:41,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325156245] [2023-08-25 19:39:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:42,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:42,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325156245] [2023-08-25 19:39:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325156245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:39:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70386977] [2023-08-25 19:39:42,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:39:42,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:42,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:39:42,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:39:42,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 19:39:42,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:39:42,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:39:42,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:39:42,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:39:42,638 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:39:42,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:39:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:42,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:39:42,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70386977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:42,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:39:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2023-08-25 19:39:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540755066] [2023-08-25 19:39:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:39:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:39:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-08-25 19:39:42,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:39:42,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 186 transitions, 1282 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:42,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:42,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:39:42,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:46,661 INFO L124 PetriNetUnfolderBase]: 19022/34236 cut-off events. [2023-08-25 19:39:46,661 INFO L125 PetriNetUnfolderBase]: For 136918/137218 co-relation queries the response was YES. [2023-08-25 19:39:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138085 conditions, 34236 events. 19022/34236 cut-off events. For 136918/137218 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 288670 event pairs, 3539 based on Foata normal form. 49/34235 useless extension candidates. Maximal degree in co-relation 138036. Up to 17373 conditions per place. [2023-08-25 19:39:47,002 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 299 selfloop transitions, 45 changer transitions 41/397 dead transitions. [2023-08-25 19:39:47,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 397 transitions, 3498 flow [2023-08-25 19:39:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:39:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:39:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2298 transitions. [2023-08-25 19:39:47,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851181498240322 [2023-08-25 19:39:47,005 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2298 transitions. [2023-08-25 19:39:47,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2298 transitions. [2023-08-25 19:39:47,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:47,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2298 transitions. [2023-08-25 19:39:47,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.33333333333334) internal successors, (2298), 9 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:47,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:47,010 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:47,010 INFO L175 Difference]: Start difference. First operand has 157 places, 186 transitions, 1282 flow. Second operand 9 states and 2298 transitions. [2023-08-25 19:39:47,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 397 transitions, 3498 flow [2023-08-25 19:39:48,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 397 transitions, 3462 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-25 19:39:48,628 INFO L231 Difference]: Finished difference. Result has 165 places, 190 transitions, 1407 flow [2023-08-25 19:39:48,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=165, PETRI_TRANSITIONS=190} [2023-08-25 19:39:48,628 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 31 predicate places. [2023-08-25 19:39:48,628 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 190 transitions, 1407 flow [2023-08-25 19:39:48,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:48,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:48,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:48,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 19:39:48,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:48,834 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:48,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -55449554, now seen corresponding path program 10 times [2023-08-25 19:39:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942243924] [2023-08-25 19:39:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942243924] [2023-08-25 19:39:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942243924] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:39:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657736578] [2023-08-25 19:39:49,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:39:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:39:49,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:39:49,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 19:39:49,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:39:49,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:39:49,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:39:49,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:39:49,643 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:39:49,644 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:39:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:39:49,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:39:49,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657736578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:39:49,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:39:49,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2023-08-25 19:39:49,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983640106] [2023-08-25 19:39:49,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:39:49,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:39:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:39:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-08-25 19:39:49,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:39:49,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 190 transitions, 1407 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:49,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:49,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:39:49,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:39:54,346 INFO L124 PetriNetUnfolderBase]: 18606/34103 cut-off events. [2023-08-25 19:39:54,346 INFO L125 PetriNetUnfolderBase]: For 145626/145934 co-relation queries the response was YES. [2023-08-25 19:39:54,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139928 conditions, 34103 events. 18606/34103 cut-off events. For 145626/145934 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 295002 event pairs, 3785 based on Foata normal form. 54/34089 useless extension candidates. Maximal degree in co-relation 139877. Up to 16653 conditions per place. [2023-08-25 19:39:54,745 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 311 selfloop transitions, 46 changer transitions 47/416 dead transitions. [2023-08-25 19:39:54,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 416 transitions, 3740 flow [2023-08-25 19:39:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:39:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:39:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2551 transitions. [2023-08-25 19:39:54,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3847662141779789 [2023-08-25 19:39:54,748 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2551 transitions. [2023-08-25 19:39:54,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2551 transitions. [2023-08-25 19:39:54,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:39:54,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2551 transitions. [2023-08-25 19:39:54,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 255.1) internal successors, (2551), 10 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:54,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:54,753 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:54,753 INFO L175 Difference]: Start difference. First operand has 165 places, 190 transitions, 1407 flow. Second operand 10 states and 2551 transitions. [2023-08-25 19:39:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 416 transitions, 3740 flow [2023-08-25 19:39:56,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 416 transitions, 3632 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-25 19:39:56,453 INFO L231 Difference]: Finished difference. Result has 170 places, 193 transitions, 1436 flow [2023-08-25 19:39:56,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1436, PETRI_PLACES=170, PETRI_TRANSITIONS=193} [2023-08-25 19:39:56,453 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 36 predicate places. [2023-08-25 19:39:56,453 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 193 transitions, 1436 flow [2023-08-25 19:39:56,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:56,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:39:56,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:39:56,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 19:39:56,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 19:39:56,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:39:56,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:39:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1635453382, now seen corresponding path program 11 times [2023-08-25 19:39:56,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:39:56,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609151980] [2023-08-25 19:39:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:39:56,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:39:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:39:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:57,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:39:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609151980] [2023-08-25 19:39:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609151980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:39:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324536697] [2023-08-25 19:39:57,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:39:57,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:39:57,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:39:57,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:39:57,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 19:39:57,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:39:57,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:39:57,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 19:39:57,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:39:57,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 19:39:57,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 19:39:57,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 19:39:57,434 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 19:39:57,602 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 19:39:57,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 19:39:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:57,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:39:57,957 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1389 (Array Int Int)) (~i~0 Int) (~j~0 Int)) (or (< ~i~0 0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1389) c_~f~0.base))) (= (select .cse0 (+ (* ~i~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~j~0 4))))) (<= c_~n~0 ~i~0) (< ~j~0 0) (<= c_~n~0 ~j~0))) is different from false [2023-08-25 19:39:58,025 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1389 (Array Int Int)) (v_ArrVal_1388 (Array Int Int)) (~i~0 Int) (~j~0 Int)) (or (< ~i~0 0) (<= c_~n~0 ~i~0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1388) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1389) c_~f~0.base))) (= (select .cse0 (+ (* ~i~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~j~0 4))))) (< ~j~0 0) (<= c_~n~0 ~j~0))) is different from false [2023-08-25 19:39:58,118 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:39:58,118 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 61 treesize of output 50 [2023-08-25 19:39:58,127 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 19:39:58,127 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 398 treesize of output 369 [2023-08-25 19:39:58,136 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-25 19:39:58,136 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 178 treesize of output 130 [2023-08-25 19:39:58,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:39:58,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2023-08-25 19:39:58,153 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-25 19:39:58,153 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 70 treesize of output 46 [2023-08-25 19:39:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:39:58,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324536697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:39:58,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:39:58,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2023-08-25 19:39:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768740212] [2023-08-25 19:39:58,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:39:58,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 19:39:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:39:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 19:39:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=613, Unknown=2, NotChecked=102, Total=812 [2023-08-25 19:39:58,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 663 [2023-08-25 19:39:58,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 193 transitions, 1436 flow. Second operand has 29 states, 29 states have (on average 183.20689655172413) internal successors, (5313), 29 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:39:58,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:39:58,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 663 [2023-08-25 19:39:58,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:40:17,319 INFO L124 PetriNetUnfolderBase]: 87044/135625 cut-off events. [2023-08-25 19:40:17,319 INFO L125 PetriNetUnfolderBase]: For 597201/597201 co-relation queries the response was YES. [2023-08-25 19:40:18,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572020 conditions, 135625 events. 87044/135625 cut-off events. For 597201/597201 co-relation queries the response was YES. Maximal size of possible extension queue 3754. Compared 1110363 event pairs, 19808 based on Foata normal form. 48/135673 useless extension candidates. Maximal degree in co-relation 571967. Up to 47445 conditions per place. [2023-08-25 19:40:19,037 INFO L140 encePairwiseOnDemand]: 649/663 looper letters, 670 selfloop transitions, 92 changer transitions 328/1090 dead transitions. [2023-08-25 19:40:19,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1090 transitions, 8648 flow [2023-08-25 19:40:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 19:40:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 19:40:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6412 transitions. [2023-08-25 19:40:19,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30222473604826544 [2023-08-25 19:40:19,068 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6412 transitions. [2023-08-25 19:40:19,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6412 transitions. [2023-08-25 19:40:19,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:40:19,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6412 transitions. [2023-08-25 19:40:19,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 200.375) internal successors, (6412), 32 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:19,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 663.0) internal successors, (21879), 33 states have internal predecessors, (21879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:19,083 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 663.0) internal successors, (21879), 33 states have internal predecessors, (21879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:19,083 INFO L175 Difference]: Start difference. First operand has 170 places, 193 transitions, 1436 flow. Second operand 32 states and 6412 transitions. [2023-08-25 19:40:19,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1090 transitions, 8648 flow [2023-08-25 19:40:34,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 1090 transitions, 8438 flow, removed 15 selfloop flow, removed 8 redundant places. [2023-08-25 19:40:34,765 INFO L231 Difference]: Finished difference. Result has 215 places, 225 transitions, 2031 flow [2023-08-25 19:40:34,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2031, PETRI_PLACES=215, PETRI_TRANSITIONS=225} [2023-08-25 19:40:34,767 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 81 predicate places. [2023-08-25 19:40:34,767 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 225 transitions, 2031 flow [2023-08-25 19:40:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 183.20689655172413) internal successors, (5313), 29 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:34,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:40:34,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:40:34,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 19:40:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 19:40:34,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:40:34,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:40:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1974645228, now seen corresponding path program 12 times [2023-08-25 19:40:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:40:34,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302195965] [2023-08-25 19:40:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:40:34,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:40:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:40:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:40:35,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:40:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302195965] [2023-08-25 19:40:35,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302195965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:40:35,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043420241] [2023-08-25 19:40:35,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:40:35,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:40:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:40:35,898 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:40:35,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 19:40:36,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:40:36,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:40:36,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-25 19:40:36,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:40:36,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:40:36,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:40:36,472 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:40:36,473 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:40:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:40:36,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:40:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043420241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:40:36,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:40:36,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 18 [2023-08-25 19:40:36,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306378665] [2023-08-25 19:40:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:40:36,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:40:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:40:36,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:40:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:40:36,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:40:36,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 225 transitions, 2031 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:36,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:40:36,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:40:36,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:40:41,738 INFO L124 PetriNetUnfolderBase]: 21581/38921 cut-off events. [2023-08-25 19:40:41,739 INFO L125 PetriNetUnfolderBase]: For 224096/225024 co-relation queries the response was YES. [2023-08-25 19:40:42,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176263 conditions, 38921 events. 21581/38921 cut-off events. For 224096/225024 co-relation queries the response was YES. Maximal size of possible extension queue 1302. Compared 337058 event pairs, 5217 based on Foata normal form. 89/38887 useless extension candidates. Maximal degree in co-relation 176188. Up to 19184 conditions per place. [2023-08-25 19:40:42,406 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 340 selfloop transitions, 68 changer transitions 55/471 dead transitions. [2023-08-25 19:40:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 471 transitions, 4719 flow [2023-08-25 19:40:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:40:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:40:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2604 transitions. [2023-08-25 19:40:42,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35705470999588645 [2023-08-25 19:40:42,409 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2604 transitions. [2023-08-25 19:40:42,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2604 transitions. [2023-08-25 19:40:42,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:40:42,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2604 transitions. [2023-08-25 19:40:42,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 236.72727272727272) internal successors, (2604), 11 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:42,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:42,415 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:42,415 INFO L175 Difference]: Start difference. First operand has 215 places, 225 transitions, 2031 flow. Second operand 11 states and 2604 transitions. [2023-08-25 19:40:42,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 471 transitions, 4719 flow [2023-08-25 19:40:45,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 471 transitions, 4502 flow, removed 89 selfloop flow, removed 13 redundant places. [2023-08-25 19:40:45,186 INFO L231 Difference]: Finished difference. Result has 208 places, 233 transitions, 2169 flow [2023-08-25 19:40:45,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2169, PETRI_PLACES=208, PETRI_TRANSITIONS=233} [2023-08-25 19:40:45,192 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 74 predicate places. [2023-08-25 19:40:45,192 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 233 transitions, 2169 flow [2023-08-25 19:40:45,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:45,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:40:45,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:40:45,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-25 19:40:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:40:45,398 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:40:45,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:40:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1080191374, now seen corresponding path program 13 times [2023-08-25 19:40:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:40:45,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647224365] [2023-08-25 19:40:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:40:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:40:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:40:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:40:45,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:40:45,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647224365] [2023-08-25 19:40:45,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647224365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:40:45,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:40:45,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:40:45,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272538532] [2023-08-25 19:40:45,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:40:45,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:40:45,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:40:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:40:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:40:45,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 663 [2023-08-25 19:40:45,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 233 transitions, 2169 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:45,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:40:45,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 663 [2023-08-25 19:40:45,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:40:49,739 INFO L124 PetriNetUnfolderBase]: 16626/30996 cut-off events. [2023-08-25 19:40:49,739 INFO L125 PetriNetUnfolderBase]: For 157792/158577 co-relation queries the response was YES. [2023-08-25 19:40:50,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132534 conditions, 30996 events. 16626/30996 cut-off events. For 157792/158577 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 267539 event pairs, 8428 based on Foata normal form. 144/31004 useless extension candidates. Maximal degree in co-relation 132463. Up to 24175 conditions per place. [2023-08-25 19:40:50,475 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 328 selfloop transitions, 16 changer transitions 32/388 dead transitions. [2023-08-25 19:40:50,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 388 transitions, 4332 flow [2023-08-25 19:40:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:40:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:40:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2670 transitions. [2023-08-25 19:40:50,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40271493212669685 [2023-08-25 19:40:50,479 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2670 transitions. [2023-08-25 19:40:50,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2670 transitions. [2023-08-25 19:40:50,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:40:50,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2670 transitions. [2023-08-25 19:40:50,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:50,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:50,485 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:50,486 INFO L175 Difference]: Start difference. First operand has 208 places, 233 transitions, 2169 flow. Second operand 10 states and 2670 transitions. [2023-08-25 19:40:50,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 388 transitions, 4332 flow [2023-08-25 19:40:52,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 388 transitions, 4267 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-25 19:40:52,469 INFO L231 Difference]: Finished difference. Result has 210 places, 231 transitions, 2155 flow [2023-08-25 19:40:52,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2155, PETRI_PLACES=210, PETRI_TRANSITIONS=231} [2023-08-25 19:40:52,470 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 76 predicate places. [2023-08-25 19:40:52,470 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 231 transitions, 2155 flow [2023-08-25 19:40:52,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:52,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:40:52,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:40:52,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-25 19:40:52,470 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:40:52,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:40:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 185023880, now seen corresponding path program 14 times [2023-08-25 19:40:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:40:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396570134] [2023-08-25 19:40:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:40:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:40:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:40:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:40:52,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:40:52,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396570134] [2023-08-25 19:40:52,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396570134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:40:52,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:40:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:40:52,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107785946] [2023-08-25 19:40:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:40:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:40:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:40:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:40:52,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:40:52,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 663 [2023-08-25 19:40:52,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 231 transitions, 2155 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:52,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:40:52,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 663 [2023-08-25 19:40:52,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:40:57,347 INFO L124 PetriNetUnfolderBase]: 13608/26485 cut-off events. [2023-08-25 19:40:57,347 INFO L125 PetriNetUnfolderBase]: For 129863/129883 co-relation queries the response was YES. [2023-08-25 19:40:57,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110003 conditions, 26485 events. 13608/26485 cut-off events. For 129863/129883 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 233798 event pairs, 4402 based on Foata normal form. 121/26391 useless extension candidates. Maximal degree in co-relation 109934. Up to 5810 conditions per place. [2023-08-25 19:40:57,812 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 521 selfloop transitions, 36 changer transitions 22/591 dead transitions. [2023-08-25 19:40:57,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 591 transitions, 6745 flow [2023-08-25 19:40:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:40:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:40:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2425 transitions. [2023-08-25 19:40:57,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40640187699011227 [2023-08-25 19:40:57,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2425 transitions. [2023-08-25 19:40:57,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2425 transitions. [2023-08-25 19:40:57,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:40:57,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2425 transitions. [2023-08-25 19:40:57,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.44444444444446) internal successors, (2425), 9 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:57,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:57,819 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:57,819 INFO L175 Difference]: Start difference. First operand has 210 places, 231 transitions, 2155 flow. Second operand 9 states and 2425 transitions. [2023-08-25 19:40:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 591 transitions, 6745 flow [2023-08-25 19:40:58,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 591 transitions, 6702 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-25 19:40:58,716 INFO L231 Difference]: Finished difference. Result has 211 places, 236 transitions, 2266 flow [2023-08-25 19:40:58,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2266, PETRI_PLACES=211, PETRI_TRANSITIONS=236} [2023-08-25 19:40:58,717 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 77 predicate places. [2023-08-25 19:40:58,717 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 236 transitions, 2266 flow [2023-08-25 19:40:58,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:58,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:40:58,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:40:58,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-25 19:40:58,717 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:40:58,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:40:58,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1280500524, now seen corresponding path program 15 times [2023-08-25 19:40:58,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:40:58,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854517421] [2023-08-25 19:40:58,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:40:58,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:40:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:40:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:40:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:40:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854517421] [2023-08-25 19:40:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854517421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:40:58,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:40:58,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-25 19:40:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058953557] [2023-08-25 19:40:58,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:40:58,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 19:40:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:40:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 19:40:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-25 19:40:58,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 663 [2023-08-25 19:40:58,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 236 transitions, 2266 flow. Second operand has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:40:58,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:40:58,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 663 [2023-08-25 19:40:58,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:01,391 INFO L124 PetriNetUnfolderBase]: 9827/19030 cut-off events. [2023-08-25 19:41:01,392 INFO L125 PetriNetUnfolderBase]: For 95560/95972 co-relation queries the response was YES. [2023-08-25 19:41:01,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79851 conditions, 19030 events. 9827/19030 cut-off events. For 95560/95972 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 160991 event pairs, 5030 based on Foata normal form. 145/19081 useless extension candidates. Maximal degree in co-relation 79779. Up to 13349 conditions per place. [2023-08-25 19:41:01,523 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 229 selfloop transitions, 15 changer transitions 36/292 dead transitions. [2023-08-25 19:41:01,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 292 transitions, 3153 flow [2023-08-25 19:41:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:41:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:41:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2407 transitions. [2023-08-25 19:41:01,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033852857382269 [2023-08-25 19:41:01,525 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2407 transitions. [2023-08-25 19:41:01,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2407 transitions. [2023-08-25 19:41:01,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:01,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2407 transitions. [2023-08-25 19:41:01,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 267.44444444444446) internal successors, (2407), 9 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:01,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:01,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:01,530 INFO L175 Difference]: Start difference. First operand has 211 places, 236 transitions, 2266 flow. Second operand 9 states and 2407 transitions. [2023-08-25 19:41:01,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 292 transitions, 3153 flow [2023-08-25 19:41:02,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 292 transitions, 2846 flow, removed 99 selfloop flow, removed 17 redundant places. [2023-08-25 19:41:02,161 INFO L231 Difference]: Finished difference. Result has 193 places, 145 transitions, 1161 flow [2023-08-25 19:41:02,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1161, PETRI_PLACES=193, PETRI_TRANSITIONS=145} [2023-08-25 19:41:02,161 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 59 predicate places. [2023-08-25 19:41:02,162 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 145 transitions, 1161 flow [2023-08-25 19:41:02,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.42857142857144) internal successors, (1809), 7 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:02,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:02,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-25 19:41:02,162 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:02,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1534001670, now seen corresponding path program 16 times [2023-08-25 19:41:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:02,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191883192] [2023-08-25 19:41:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191883192] [2023-08-25 19:41:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191883192] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051085623] [2023-08-25 19:41:03,069 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:41:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:03,082 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) [2023-08-25 19:41:03,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 19:41:03,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:41:03,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:03,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-25 19:41:03,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:03,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:41:03,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:41:03,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:41:03,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:41:03,977 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:03,977 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:03,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051085623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:03,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:03,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21 [2023-08-25 19:41:03,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736026337] [2023-08-25 19:41:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:03,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 19:41:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 19:41:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:41:03,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 663 [2023-08-25 19:41:03,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 145 transitions, 1161 flow. Second operand has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:03,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:03,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 663 [2023-08-25 19:41:03,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:06,852 INFO L124 PetriNetUnfolderBase]: 11178/18951 cut-off events. [2023-08-25 19:41:06,852 INFO L125 PetriNetUnfolderBase]: For 96576/96672 co-relation queries the response was YES. [2023-08-25 19:41:06,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82648 conditions, 18951 events. 11178/18951 cut-off events. For 96576/96672 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 133283 event pairs, 3251 based on Foata normal form. 18/18931 useless extension candidates. Maximal degree in co-relation 82587. Up to 7849 conditions per place. [2023-08-25 19:41:06,980 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 228 selfloop transitions, 27 changer transitions 52/311 dead transitions. [2023-08-25 19:41:06,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 311 transitions, 2850 flow [2023-08-25 19:41:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:41:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:41:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2488 transitions. [2023-08-25 19:41:06,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411490470314 [2023-08-25 19:41:06,983 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2488 transitions. [2023-08-25 19:41:06,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2488 transitions. [2023-08-25 19:41:06,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:06,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2488 transitions. [2023-08-25 19:41:06,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 226.1818181818182) internal successors, (2488), 11 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:06,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:06,988 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:06,988 INFO L175 Difference]: Start difference. First operand has 193 places, 145 transitions, 1161 flow. Second operand 11 states and 2488 transitions. [2023-08-25 19:41:06,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 311 transitions, 2850 flow [2023-08-25 19:41:07,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 311 transitions, 2727 flow, removed 28 selfloop flow, removed 13 redundant places. [2023-08-25 19:41:07,494 INFO L231 Difference]: Finished difference. Result has 188 places, 140 transitions, 1150 flow [2023-08-25 19:41:07,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=188, PETRI_TRANSITIONS=140} [2023-08-25 19:41:07,494 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 54 predicate places. [2023-08-25 19:41:07,494 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 140 transitions, 1150 flow [2023-08-25 19:41:07,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:07,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:07,495 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:07,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:07,701 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,SelfDestructingSolverStorable20 [2023-08-25 19:41:07,701 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:07,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:07,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1709366461, now seen corresponding path program 17 times [2023-08-25 19:41:07,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:07,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453315817] [2023-08-25 19:41:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:07,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:09,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:09,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453315817] [2023-08-25 19:41:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453315817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748101788] [2023-08-25 19:41:09,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:41:09,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:09,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:09,831 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) [2023-08-25 19:41:09,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 19:41:10,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:41:10,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:10,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:41:10,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:10,239 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:10,239 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:10,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:10,360 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:41:10,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:41:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:10,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748101788] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:10,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:10,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 23 [2023-08-25 19:41:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404775646] [2023-08-25 19:41:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:41:10,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:10,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 140 transitions, 1150 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:10,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:10,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:12,204 INFO L124 PetriNetUnfolderBase]: 7610/14273 cut-off events. [2023-08-25 19:41:12,204 INFO L125 PetriNetUnfolderBase]: For 59916/60210 co-relation queries the response was YES. [2023-08-25 19:41:12,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57899 conditions, 14273 events. 7610/14273 cut-off events. For 59916/60210 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 110537 event pairs, 2655 based on Foata normal form. 4/14221 useless extension candidates. Maximal degree in co-relation 57840. Up to 8197 conditions per place. [2023-08-25 19:41:12,292 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 200 selfloop transitions, 23 changer transitions 60/295 dead transitions. [2023-08-25 19:41:12,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 295 transitions, 2741 flow [2023-08-25 19:41:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 19:41:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 19:41:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3016 transitions. [2023-08-25 19:41:12,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2023-08-25 19:41:12,295 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3016 transitions. [2023-08-25 19:41:12,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3016 transitions. [2023-08-25 19:41:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:12,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3016 transitions. [2023-08-25 19:41:12,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 251.33333333333334) internal successors, (3016), 12 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 663.0) internal successors, (8619), 13 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,301 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 663.0) internal successors, (8619), 13 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,301 INFO L175 Difference]: Start difference. First operand has 188 places, 140 transitions, 1150 flow. Second operand 12 states and 3016 transitions. [2023-08-25 19:41:12,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 295 transitions, 2741 flow [2023-08-25 19:41:12,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 295 transitions, 2650 flow, removed 38 selfloop flow, removed 9 redundant places. [2023-08-25 19:41:12,595 INFO L231 Difference]: Finished difference. Result has 183 places, 141 transitions, 1165 flow [2023-08-25 19:41:12,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1165, PETRI_PLACES=183, PETRI_TRANSITIONS=141} [2023-08-25 19:41:12,596 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 49 predicate places. [2023-08-25 19:41:12,596 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 141 transitions, 1165 flow [2023-08-25 19:41:12,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:12,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:12,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:12,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:12,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:12,802 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:12,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:12,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1555745977, now seen corresponding path program 18 times [2023-08-25 19:41:12,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:12,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052010246] [2023-08-25 19:41:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:14,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052010246] [2023-08-25 19:41:14,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052010246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:14,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833885893] [2023-08-25 19:41:14,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:41:14,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:14,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:14,270 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) [2023-08-25 19:41:14,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 19:41:14,810 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:41:14,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:14,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 19:41:14,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:14,943 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:14,944 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:14,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:14,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833885893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:14,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:14,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2023-08-25 19:41:14,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666535522] [2023-08-25 19:41:14,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:14,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-08-25 19:41:14,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:14,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 141 transitions, 1165 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:14,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:14,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:14,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:16,954 INFO L124 PetriNetUnfolderBase]: 8434/15777 cut-off events. [2023-08-25 19:41:16,954 INFO L125 PetriNetUnfolderBase]: For 57872/58221 co-relation queries the response was YES. [2023-08-25 19:41:17,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62299 conditions, 15777 events. 8434/15777 cut-off events. For 57872/58221 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 124345 event pairs, 2699 based on Foata normal form. 16/15739 useless extension candidates. Maximal degree in co-relation 62241. Up to 9441 conditions per place. [2023-08-25 19:41:17,068 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 214 selfloop transitions, 20 changer transitions 54/300 dead transitions. [2023-08-25 19:41:17,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 300 transitions, 2870 flow [2023-08-25 19:41:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:41:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:41:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2771 transitions. [2023-08-25 19:41:17,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2023-08-25 19:41:17,070 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2771 transitions. [2023-08-25 19:41:17,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2771 transitions. [2023-08-25 19:41:17,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:17,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2771 transitions. [2023-08-25 19:41:17,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 251.9090909090909) internal successors, (2771), 11 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,075 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,076 INFO L175 Difference]: Start difference. First operand has 183 places, 141 transitions, 1165 flow. Second operand 11 states and 2771 transitions. [2023-08-25 19:41:17,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 300 transitions, 2870 flow [2023-08-25 19:41:17,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 300 transitions, 2813 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-25 19:41:17,288 INFO L231 Difference]: Finished difference. Result has 184 places, 147 transitions, 1256 flow [2023-08-25 19:41:17,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1256, PETRI_PLACES=184, PETRI_TRANSITIONS=147} [2023-08-25 19:41:17,288 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 50 predicate places. [2023-08-25 19:41:17,288 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 147 transitions, 1256 flow [2023-08-25 19:41:17,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:17,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:17,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:17,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-25 19:41:17,497 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,SelfDestructingSolverStorable22 [2023-08-25 19:41:17,497 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:17,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1006714533, now seen corresponding path program 19 times [2023-08-25 19:41:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532409052] [2023-08-25 19:41:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:17,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532409052] [2023-08-25 19:41:17,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532409052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947557164] [2023-08-25 19:41:17,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:41:17,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:17,990 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) [2023-08-25 19:41:18,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 19:41:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:18,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:41:18,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:18,362 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:18,362 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:18,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:18,486 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:41:18,486 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:41:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:18,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947557164] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:18,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:18,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 20 [2023-08-25 19:41:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924343731] [2023-08-25 19:41:18,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:18,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:18,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:18,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:18,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2023-08-25 19:41:18,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:18,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 147 transitions, 1256 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:18,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:18,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:18,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:20,665 INFO L124 PetriNetUnfolderBase]: 8396/15743 cut-off events. [2023-08-25 19:41:20,665 INFO L125 PetriNetUnfolderBase]: For 62789/63122 co-relation queries the response was YES. [2023-08-25 19:41:20,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63098 conditions, 15743 events. 8396/15743 cut-off events. For 62789/63122 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 124400 event pairs, 2529 based on Foata normal form. 32/15719 useless extension candidates. Maximal degree in co-relation 63039. Up to 8481 conditions per place. [2023-08-25 19:41:20,809 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 292 selfloop transitions, 29 changer transitions 41/374 dead transitions. [2023-08-25 19:41:20,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 374 transitions, 3452 flow [2023-08-25 19:41:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 19:41:20,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 19:41:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3301 transitions. [2023-08-25 19:41:20,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829910662489848 [2023-08-25 19:41:20,819 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3301 transitions. [2023-08-25 19:41:20,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3301 transitions. [2023-08-25 19:41:20,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:20,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3301 transitions. [2023-08-25 19:41:20,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 253.92307692307693) internal successors, (3301), 13 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,831 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:20,831 INFO L175 Difference]: Start difference. First operand has 184 places, 147 transitions, 1256 flow. Second operand 13 states and 3301 transitions. [2023-08-25 19:41:20,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 374 transitions, 3452 flow [2023-08-25 19:41:21,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 374 transitions, 3374 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-25 19:41:21,063 INFO L231 Difference]: Finished difference. Result has 194 places, 149 transitions, 1319 flow [2023-08-25 19:41:21,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1319, PETRI_PLACES=194, PETRI_TRANSITIONS=149} [2023-08-25 19:41:21,064 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 60 predicate places. [2023-08-25 19:41:21,064 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 149 transitions, 1319 flow [2023-08-25 19:41:21,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:21,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:21,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:21,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-25 19:41:21,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-25 19:41:21,271 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:21,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1638160963, now seen corresponding path program 20 times [2023-08-25 19:41:21,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:21,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689415054] [2023-08-25 19:41:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:22,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689415054] [2023-08-25 19:41:22,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689415054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:22,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316545958] [2023-08-25 19:41:22,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:41:22,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:22,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:22,038 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) [2023-08-25 19:41:22,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 19:41:22,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:41:22,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:22,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:41:22,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:22,553 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:22,554 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:22,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:22,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316545958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2023-08-25 19:41:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598841285] [2023-08-25 19:41:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:22,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:22,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-08-25 19:41:22,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:22,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 149 transitions, 1319 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:22,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:22,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:22,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:24,411 INFO L124 PetriNetUnfolderBase]: 8118/15241 cut-off events. [2023-08-25 19:41:24,411 INFO L125 PetriNetUnfolderBase]: For 62271/62596 co-relation queries the response was YES. [2023-08-25 19:41:24,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62151 conditions, 15241 events. 8118/15241 cut-off events. For 62271/62596 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 119821 event pairs, 2693 based on Foata normal form. 28/15215 useless extension candidates. Maximal degree in co-relation 62089. Up to 9571 conditions per place. [2023-08-25 19:41:24,529 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 149 selfloop transitions, 14 changer transitions 86/261 dead transitions. [2023-08-25 19:41:24,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 261 transitions, 2587 flow [2023-08-25 19:41:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:41:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:41:24,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2265 transitions. [2023-08-25 19:41:24,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379587732528909 [2023-08-25 19:41:24,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2265 transitions. [2023-08-25 19:41:24,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2265 transitions. [2023-08-25 19:41:24,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:24,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2265 transitions. [2023-08-25 19:41:24,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 251.66666666666666) internal successors, (2265), 9 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,536 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,536 INFO L175 Difference]: Start difference. First operand has 194 places, 149 transitions, 1319 flow. Second operand 9 states and 2265 transitions. [2023-08-25 19:41:24,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 261 transitions, 2587 flow [2023-08-25 19:41:24,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 261 transitions, 2517 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-08-25 19:41:24,795 INFO L231 Difference]: Finished difference. Result has 193 places, 144 transitions, 1239 flow [2023-08-25 19:41:24,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=193, PETRI_TRANSITIONS=144} [2023-08-25 19:41:24,796 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 59 predicate places. [2023-08-25 19:41:24,796 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 144 transitions, 1239 flow [2023-08-25 19:41:24,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:24,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:24,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:24,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:25,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-25 19:41:25,003 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:25,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:25,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1755469911, now seen corresponding path program 21 times [2023-08-25 19:41:25,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:25,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520468826] [2023-08-25 19:41:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:26,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520468826] [2023-08-25 19:41:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520468826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021521743] [2023-08-25 19:41:26,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:41:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:26,880 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) [2023-08-25 19:41:26,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 19:41:27,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:41:27,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:27,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 19:41:27,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:27,571 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:27,571 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:27,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021521743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:27,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:27,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-08-25 19:41:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31970286] [2023-08-25 19:41:27,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:27,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:27,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:27,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:41:27,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:27,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 144 transitions, 1239 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:27,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:27,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:27,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:29,543 INFO L124 PetriNetUnfolderBase]: 7435/13274 cut-off events. [2023-08-25 19:41:29,543 INFO L125 PetriNetUnfolderBase]: For 56552/56663 co-relation queries the response was YES. [2023-08-25 19:41:29,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56125 conditions, 13274 events. 7435/13274 cut-off events. For 56552/56663 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 97481 event pairs, 1397 based on Foata normal form. 18/13254 useless extension candidates. Maximal degree in co-relation 56064. Up to 4589 conditions per place. [2023-08-25 19:41:29,640 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 218 selfloop transitions, 22 changer transitions 66/318 dead transitions. [2023-08-25 19:41:29,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 318 transitions, 3037 flow [2023-08-25 19:41:29,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:41:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:41:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2789 transitions. [2023-08-25 19:41:29,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824215000685589 [2023-08-25 19:41:29,653 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2789 transitions. [2023-08-25 19:41:29,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2789 transitions. [2023-08-25 19:41:29,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:29,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2789 transitions. [2023-08-25 19:41:29,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 253.54545454545453) internal successors, (2789), 11 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,658 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,658 INFO L175 Difference]: Start difference. First operand has 193 places, 144 transitions, 1239 flow. Second operand 11 states and 2789 transitions. [2023-08-25 19:41:29,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 318 transitions, 3037 flow [2023-08-25 19:41:29,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 318 transitions, 2958 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-08-25 19:41:29,880 INFO L231 Difference]: Finished difference. Result has 190 places, 146 transitions, 1274 flow [2023-08-25 19:41:29,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1274, PETRI_PLACES=190, PETRI_TRANSITIONS=146} [2023-08-25 19:41:29,881 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 56 predicate places. [2023-08-25 19:41:29,881 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 146 transitions, 1274 flow [2023-08-25 19:41:29,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:29,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:29,881 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:29,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:30,087 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,SelfDestructingSolverStorable25 [2023-08-25 19:41:30,087 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:30,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash 840130931, now seen corresponding path program 22 times [2023-08-25 19:41:30,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:30,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503396951] [2023-08-25 19:41:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:31,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503396951] [2023-08-25 19:41:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503396951] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488915120] [2023-08-25 19:41:31,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:41:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:31,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:31,043 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) [2023-08-25 19:41:31,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 19:41:31,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:41:31,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:31,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:41:31,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:31,488 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:31,488 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:31,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:31,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488915120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:31,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:31,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-25 19:41:31,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037861536] [2023-08-25 19:41:31,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:31,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:31,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-08-25 19:41:31,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:31,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 146 transitions, 1274 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:31,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:31,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:31,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:33,210 INFO L124 PetriNetUnfolderBase]: 7359/13898 cut-off events. [2023-08-25 19:41:33,210 INFO L125 PetriNetUnfolderBase]: For 63025/63176 co-relation queries the response was YES. [2023-08-25 19:41:33,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57025 conditions, 13898 events. 7359/13898 cut-off events. For 63025/63176 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 108524 event pairs, 2078 based on Foata normal form. 12/13836 useless extension candidates. Maximal degree in co-relation 56964. Up to 8629 conditions per place. [2023-08-25 19:41:33,316 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 196 selfloop transitions, 18 changer transitions 51/277 dead transitions. [2023-08-25 19:41:33,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 277 transitions, 2655 flow [2023-08-25 19:41:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:41:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:41:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2521 transitions. [2023-08-25 19:41:33,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802413273001508 [2023-08-25 19:41:33,318 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2521 transitions. [2023-08-25 19:41:33,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2521 transitions. [2023-08-25 19:41:33,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:33,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2521 transitions. [2023-08-25 19:41:33,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 252.1) internal successors, (2521), 10 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:33,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:33,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:33,322 INFO L175 Difference]: Start difference. First operand has 190 places, 146 transitions, 1274 flow. Second operand 10 states and 2521 transitions. [2023-08-25 19:41:33,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 277 transitions, 2655 flow [2023-08-25 19:41:33,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 277 transitions, 2583 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-25 19:41:33,633 INFO L231 Difference]: Finished difference. Result has 193 places, 143 transitions, 1203 flow [2023-08-25 19:41:33,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1203, PETRI_PLACES=193, PETRI_TRANSITIONS=143} [2023-08-25 19:41:33,634 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 59 predicate places. [2023-08-25 19:41:33,634 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 143 transitions, 1203 flow [2023-08-25 19:41:33,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:33,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:33,634 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:33,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:33,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:33,840 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:33,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1637405151, now seen corresponding path program 23 times [2023-08-25 19:41:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244911339] [2023-08-25 19:41:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:33,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:34,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244911339] [2023-08-25 19:41:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244911339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088762109] [2023-08-25 19:41:34,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:41:34,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:34,886 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) [2023-08-25 19:41:34,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 19:41:35,160 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:41:35,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:35,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:41:35,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:35,296 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:35,296 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:35,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:35,417 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:41:35,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:41:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088762109] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:35,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:35,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 8] total 21 [2023-08-25 19:41:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25050062] [2023-08-25 19:41:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:35,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:35,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:35,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:35,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-08-25 19:41:35,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:35,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 143 transitions, 1203 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:35,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:35,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:35,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:37,057 INFO L124 PetriNetUnfolderBase]: 6811/13124 cut-off events. [2023-08-25 19:41:37,057 INFO L125 PetriNetUnfolderBase]: For 51410/51549 co-relation queries the response was YES. [2023-08-25 19:41:37,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51884 conditions, 13124 events. 6811/13124 cut-off events. For 51410/51549 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 102623 event pairs, 2114 based on Foata normal form. 30/13080 useless extension candidates. Maximal degree in co-relation 51822. Up to 7695 conditions per place. [2023-08-25 19:41:37,166 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 239 selfloop transitions, 30 changer transitions 48/329 dead transitions. [2023-08-25 19:41:37,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 329 transitions, 3030 flow [2023-08-25 19:41:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:41:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:41:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2802 transitions. [2023-08-25 19:41:37,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842040312628548 [2023-08-25 19:41:37,169 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2802 transitions. [2023-08-25 19:41:37,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2802 transitions. [2023-08-25 19:41:37,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:37,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2802 transitions. [2023-08-25 19:41:37,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 254.72727272727272) internal successors, (2802), 11 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,173 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,173 INFO L175 Difference]: Start difference. First operand has 193 places, 143 transitions, 1203 flow. Second operand 11 states and 2802 transitions. [2023-08-25 19:41:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 329 transitions, 3030 flow [2023-08-25 19:41:37,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 329 transitions, 2979 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-25 19:41:37,359 INFO L231 Difference]: Finished difference. Result has 192 places, 149 transitions, 1298 flow [2023-08-25 19:41:37,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1298, PETRI_PLACES=192, PETRI_TRANSITIONS=149} [2023-08-25 19:41:37,360 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 58 predicate places. [2023-08-25 19:41:37,360 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 149 transitions, 1298 flow [2023-08-25 19:41:37,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:37,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:37,360 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:37,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-25 19:41:37,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 19:41:37,566 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:37,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:37,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1861907725, now seen corresponding path program 24 times [2023-08-25 19:41:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:37,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878374933] [2023-08-25 19:41:37,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:37,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:38,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878374933] [2023-08-25 19:41:38,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878374933] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:38,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328768147] [2023-08-25 19:41:38,067 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:41:38,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:38,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:38,069 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) [2023-08-25 19:41:38,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 19:41:38,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:41:38,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:38,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 19:41:38,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:38,846 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:38,847 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:38,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328768147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2023-08-25 19:41:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599134877] [2023-08-25 19:41:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-08-25 19:41:38,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:38,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 149 transitions, 1298 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:38,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:38,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:38,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:40,480 INFO L124 PetriNetUnfolderBase]: 6745/12660 cut-off events. [2023-08-25 19:41:40,480 INFO L125 PetriNetUnfolderBase]: For 50366/50531 co-relation queries the response was YES. [2023-08-25 19:41:40,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51605 conditions, 12660 events. 6745/12660 cut-off events. For 50366/50531 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 96349 event pairs, 1402 based on Foata normal form. 36/12648 useless extension candidates. Maximal degree in co-relation 51544. Up to 5771 conditions per place. [2023-08-25 19:41:40,578 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 238 selfloop transitions, 20 changer transitions 38/308 dead transitions. [2023-08-25 19:41:40,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 308 transitions, 2947 flow [2023-08-25 19:41:40,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:41:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:41:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2777 transitions. [2023-08-25 19:41:40,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3807760866584396 [2023-08-25 19:41:40,581 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2777 transitions. [2023-08-25 19:41:40,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2777 transitions. [2023-08-25 19:41:40,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:40,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2777 transitions. [2023-08-25 19:41:40,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 252.45454545454547) internal successors, (2777), 11 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:40,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:40,585 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:40,586 INFO L175 Difference]: Start difference. First operand has 192 places, 149 transitions, 1298 flow. Second operand 11 states and 2777 transitions. [2023-08-25 19:41:40,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 308 transitions, 2947 flow [2023-08-25 19:41:40,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 308 transitions, 2871 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-25 19:41:40,776 INFO L231 Difference]: Finished difference. Result has 197 places, 149 transitions, 1289 flow [2023-08-25 19:41:40,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=197, PETRI_TRANSITIONS=149} [2023-08-25 19:41:40,777 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 63 predicate places. [2023-08-25 19:41:40,777 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 149 transitions, 1289 flow [2023-08-25 19:41:40,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:40,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:40,778 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:40,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:40,983 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,SelfDestructingSolverStorable28 [2023-08-25 19:41:40,984 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:40,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1102454565, now seen corresponding path program 25 times [2023-08-25 19:41:40,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:40,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101669597] [2023-08-25 19:41:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:40,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:41,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101669597] [2023-08-25 19:41:41,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101669597] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:41,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029337553] [2023-08-25 19:41:41,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:41:41,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:41,456 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) [2023-08-25 19:41:41,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 19:41:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:41,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:41:41,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:41,852 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:41,852 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:41,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:41,953 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:41:41,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:41:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:42,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029337553] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:42,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:42,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 8] total 20 [2023-08-25 19:41:42,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197393470] [2023-08-25 19:41:42,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:42,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:42,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:42,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-08-25 19:41:42,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:42,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 149 transitions, 1289 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:42,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:42,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:43,756 INFO L124 PetriNetUnfolderBase]: 6531/12678 cut-off events. [2023-08-25 19:41:43,757 INFO L125 PetriNetUnfolderBase]: For 53619/53802 co-relation queries the response was YES. [2023-08-25 19:41:43,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51659 conditions, 12678 events. 6531/12678 cut-off events. For 53619/53802 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 99011 event pairs, 1982 based on Foata normal form. 20/12617 useless extension candidates. Maximal degree in co-relation 51596. Up to 7197 conditions per place. [2023-08-25 19:41:43,843 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 263 selfloop transitions, 34 changer transitions 39/348 dead transitions. [2023-08-25 19:41:43,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 348 transitions, 3154 flow [2023-08-25 19:41:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 19:41:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 19:41:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3778 transitions. [2023-08-25 19:41:43,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798893916540975 [2023-08-25 19:41:43,846 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3778 transitions. [2023-08-25 19:41:43,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3778 transitions. [2023-08-25 19:41:43,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:43,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3778 transitions. [2023-08-25 19:41:43,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 251.86666666666667) internal successors, (3778), 15 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:43,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 663.0) internal successors, (10608), 16 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:43,853 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 663.0) internal successors, (10608), 16 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:43,853 INFO L175 Difference]: Start difference. First operand has 197 places, 149 transitions, 1289 flow. Second operand 15 states and 3778 transitions. [2023-08-25 19:41:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 348 transitions, 3154 flow [2023-08-25 19:41:43,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 348 transitions, 3091 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-08-25 19:41:44,002 INFO L231 Difference]: Finished difference. Result has 202 places, 149 transitions, 1295 flow [2023-08-25 19:41:44,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1295, PETRI_PLACES=202, PETRI_TRANSITIONS=149} [2023-08-25 19:41:44,002 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 68 predicate places. [2023-08-25 19:41:44,002 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 149 transitions, 1295 flow [2023-08-25 19:41:44,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:44,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:44,003 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:44,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:44,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:44,208 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:44,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:44,208 INFO L85 PathProgramCache]: Analyzing trace with hash 373364387, now seen corresponding path program 26 times [2023-08-25 19:41:44,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97784937] [2023-08-25 19:41:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97784937] [2023-08-25 19:41:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97784937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766680727] [2023-08-25 19:41:45,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:41:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:45,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:45,870 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) [2023-08-25 19:41:45,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 19:41:46,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:41:46,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:46,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:41:46,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:46,372 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:46,372 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:46,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:46,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766680727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:46,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:46,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-08-25 19:41:46,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178742501] [2023-08-25 19:41:46,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:46,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:41:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:46,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:41:46,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:41:46,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:41:46,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 149 transitions, 1295 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:46,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:46,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:41:46,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:48,022 INFO L124 PetriNetUnfolderBase]: 6459/12174 cut-off events. [2023-08-25 19:41:48,022 INFO L125 PetriNetUnfolderBase]: For 49656/49821 co-relation queries the response was YES. [2023-08-25 19:41:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50155 conditions, 12174 events. 6459/12174 cut-off events. For 49656/49821 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 91956 event pairs, 1458 based on Foata normal form. 32/12146 useless extension candidates. Maximal degree in co-relation 50093. Up to 5453 conditions per place. [2023-08-25 19:41:48,123 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 189 selfloop transitions, 13 changer transitions 79/293 dead transitions. [2023-08-25 19:41:48,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 293 transitions, 2811 flow [2023-08-25 19:41:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:41:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:41:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2527 transitions. [2023-08-25 19:41:48,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3811463046757164 [2023-08-25 19:41:48,126 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2527 transitions. [2023-08-25 19:41:48,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2527 transitions. [2023-08-25 19:41:48,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:48,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2527 transitions. [2023-08-25 19:41:48,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 252.7) internal successors, (2527), 10 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:48,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:48,130 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:48,130 INFO L175 Difference]: Start difference. First operand has 202 places, 149 transitions, 1295 flow. Second operand 10 states and 2527 transitions. [2023-08-25 19:41:48,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 293 transitions, 2811 flow [2023-08-25 19:41:48,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 293 transitions, 2710 flow, removed 19 selfloop flow, removed 13 redundant places. [2023-08-25 19:41:48,288 INFO L231 Difference]: Finished difference. Result has 197 places, 144 transitions, 1169 flow [2023-08-25 19:41:48,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1169, PETRI_PLACES=197, PETRI_TRANSITIONS=144} [2023-08-25 19:41:48,289 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 63 predicate places. [2023-08-25 19:41:48,289 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 144 transitions, 1169 flow [2023-08-25 19:41:48,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:48,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:48,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:48,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:48,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:48,498 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:48,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1435000915, now seen corresponding path program 27 times [2023-08-25 19:41:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444891371] [2023-08-25 19:41:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444891371] [2023-08-25 19:41:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444891371] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019138019] [2023-08-25 19:41:49,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:41:49,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:49,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:49,108 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) [2023-08-25 19:41:49,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 19:41:49,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:41:49,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:49,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-25 19:41:49,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:49,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:41:49,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:41:49,781 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:49,781 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:49,790 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019138019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:49,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:49,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-08-25 19:41:49,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407398249] [2023-08-25 19:41:49,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:49,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:41:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:41:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-08-25 19:41:49,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:41:49,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 144 transitions, 1169 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:49,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:49,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:41:49,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:51,603 INFO L124 PetriNetUnfolderBase]: 6437/12226 cut-off events. [2023-08-25 19:41:51,603 INFO L125 PetriNetUnfolderBase]: For 48489/48640 co-relation queries the response was YES. [2023-08-25 19:41:51,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50035 conditions, 12226 events. 6437/12226 cut-off events. For 48489/48640 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 92039 event pairs, 1950 based on Foata normal form. 40/12203 useless extension candidates. Maximal degree in co-relation 49973. Up to 6452 conditions per place. [2023-08-25 19:41:51,696 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 254 selfloop transitions, 20 changer transitions 73/355 dead transitions. [2023-08-25 19:41:51,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 355 transitions, 3119 flow [2023-08-25 19:41:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 19:41:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 19:41:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3498 transitions. [2023-08-25 19:41:51,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3517345399698341 [2023-08-25 19:41:51,699 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3498 transitions. [2023-08-25 19:41:51,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3498 transitions. [2023-08-25 19:41:51,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:51,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3498 transitions. [2023-08-25 19:41:51,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 233.2) internal successors, (3498), 15 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:51,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 663.0) internal successors, (10608), 16 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:51,855 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 663.0) internal successors, (10608), 16 states have internal predecessors, (10608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:51,855 INFO L175 Difference]: Start difference. First operand has 197 places, 144 transitions, 1169 flow. Second operand 15 states and 3498 transitions. [2023-08-25 19:41:51,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 355 transitions, 3119 flow [2023-08-25 19:41:51,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 355 transitions, 3052 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-25 19:41:51,978 INFO L231 Difference]: Finished difference. Result has 201 places, 147 transitions, 1220 flow [2023-08-25 19:41:51,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1220, PETRI_PLACES=201, PETRI_TRANSITIONS=147} [2023-08-25 19:41:51,979 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 67 predicate places. [2023-08-25 19:41:51,979 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 147 transitions, 1220 flow [2023-08-25 19:41:51,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:51,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:51,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:51,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:52,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:52,185 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:52,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash 495525151, now seen corresponding path program 28 times [2023-08-25 19:41:52,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:52,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217077940] [2023-08-25 19:41:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:52,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217077940] [2023-08-25 19:41:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217077940] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730279002] [2023-08-25 19:41:53,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:41:53,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:53,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:53,335 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) [2023-08-25 19:41:53,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 19:41:54,026 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:41:54,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:54,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-25 19:41:54,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:54,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:41:54,128 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:41:54,264 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:54,265 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:54,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:41:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730279002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:41:54,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:41:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-08-25 19:41:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378147382] [2023-08-25 19:41:54,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:54,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:41:54,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:41:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-08-25 19:41:54,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:41:54,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 147 transitions, 1220 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:54,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:54,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:41:54,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:41:55,911 INFO L124 PetriNetUnfolderBase]: 6241/11790 cut-off events. [2023-08-25 19:41:55,911 INFO L125 PetriNetUnfolderBase]: For 43719/43870 co-relation queries the response was YES. [2023-08-25 19:41:55,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47954 conditions, 11790 events. 6241/11790 cut-off events. For 43719/43870 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 87311 event pairs, 1856 based on Foata normal form. 12/11710 useless extension candidates. Maximal degree in co-relation 47889. Up to 6756 conditions per place. [2023-08-25 19:41:56,001 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 219 selfloop transitions, 17 changer transitions 49/293 dead transitions. [2023-08-25 19:41:56,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 293 transitions, 2711 flow [2023-08-25 19:41:56,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:41:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:41:56,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2348 transitions. [2023-08-25 19:41:56,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541478129713424 [2023-08-25 19:41:56,003 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2348 transitions. [2023-08-25 19:41:56,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2348 transitions. [2023-08-25 19:41:56,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:41:56,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2348 transitions. [2023-08-25 19:41:56,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 234.8) internal successors, (2348), 10 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,008 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,008 INFO L175 Difference]: Start difference. First operand has 201 places, 147 transitions, 1220 flow. Second operand 10 states and 2348 transitions. [2023-08-25 19:41:56,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 293 transitions, 2711 flow [2023-08-25 19:41:56,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 293 transitions, 2651 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-08-25 19:41:56,151 INFO L231 Difference]: Finished difference. Result has 198 places, 147 transitions, 1215 flow [2023-08-25 19:41:56,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1215, PETRI_PLACES=198, PETRI_TRANSITIONS=147} [2023-08-25 19:41:56,152 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 64 predicate places. [2023-08-25 19:41:56,152 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 147 transitions, 1215 flow [2023-08-25 19:41:56,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:56,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:41:56,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:41:56,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 19:41:56,356 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,SelfDestructingSolverStorable32 [2023-08-25 19:41:56,357 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:41:56,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:41:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash -60470671, now seen corresponding path program 29 times [2023-08-25 19:41:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:41:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024299956] [2023-08-25 19:41:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:41:56,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:41:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:41:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:41:57,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:41:57,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024299956] [2023-08-25 19:41:57,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024299956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:57,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980653314] [2023-08-25 19:41:57,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:41:57,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:41:57,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:41:57,883 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) [2023-08-25 19:41:57,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 19:41:58,203 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:41:58,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:41:58,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 19:41:58,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:41:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:41:58,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:41:58,439 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:58,440 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:41:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:41:58,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:41:58,580 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:58,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-08-25 19:41:58,594 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:41:58,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-08-25 19:41:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:41:58,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980653314] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:41:58,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:41:58,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 10] total 28 [2023-08-25 19:41:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335983291] [2023-08-25 19:41:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:41:58,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:41:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:41:58,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:41:58,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=775, Unknown=1, NotChecked=0, Total=870 [2023-08-25 19:41:58,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:41:58,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 147 transitions, 1215 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:41:58,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:41:58,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:41:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:01,618 INFO L124 PetriNetUnfolderBase]: 5775/10960 cut-off events. [2023-08-25 19:42:01,618 INFO L125 PetriNetUnfolderBase]: For 40175/40308 co-relation queries the response was YES. [2023-08-25 19:42:01,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44239 conditions, 10960 events. 5775/10960 cut-off events. For 40175/40308 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 80449 event pairs, 1846 based on Foata normal form. 28/10934 useless extension candidates. Maximal degree in co-relation 44176. Up to 5898 conditions per place. [2023-08-25 19:42:01,700 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 202 selfloop transitions, 13 changer transitions 69/292 dead transitions. [2023-08-25 19:42:01,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 292 transitions, 2644 flow [2023-08-25 19:42:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:42:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:42:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2353 transitions. [2023-08-25 19:42:01,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35490196078431374 [2023-08-25 19:42:01,703 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2353 transitions. [2023-08-25 19:42:01,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2353 transitions. [2023-08-25 19:42:01,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:01,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2353 transitions. [2023-08-25 19:42:01,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 235.3) internal successors, (2353), 10 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:01,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:01,707 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:01,707 INFO L175 Difference]: Start difference. First operand has 198 places, 147 transitions, 1215 flow. Second operand 10 states and 2353 transitions. [2023-08-25 19:42:01,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 292 transitions, 2644 flow [2023-08-25 19:42:01,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 292 transitions, 2596 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-25 19:42:01,814 INFO L231 Difference]: Finished difference. Result has 199 places, 139 transitions, 1139 flow [2023-08-25 19:42:01,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1139, PETRI_PLACES=199, PETRI_TRANSITIONS=139} [2023-08-25 19:42:01,814 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 65 predicate places. [2023-08-25 19:42:01,815 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 139 transitions, 1139 flow [2023-08-25 19:42:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:01,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:01,815 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:01,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-25 19:42:02,021 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,SelfDestructingSolverStorable33 [2023-08-25 19:42:02,021 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:02,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1456013935, now seen corresponding path program 30 times [2023-08-25 19:42:02,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163678231] [2023-08-25 19:42:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:02,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163678231] [2023-08-25 19:42:02,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163678231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:02,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931007978] [2023-08-25 19:42:02,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:42:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:02,871 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:02,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 19:42:03,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:42:03,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:03,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 19:42:03,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:03,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:42:03,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:42:03,689 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:03,689 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:03,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931007978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:03,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-08-25 19:42:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928241124] [2023-08-25 19:42:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:42:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:42:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-08-25 19:42:03,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:42:03,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 139 transitions, 1139 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:03,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:03,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:42:03,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:05,166 INFO L124 PetriNetUnfolderBase]: 5365/9770 cut-off events. [2023-08-25 19:42:05,166 INFO L125 PetriNetUnfolderBase]: For 37481/37574 co-relation queries the response was YES. [2023-08-25 19:42:05,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40443 conditions, 9770 events. 5365/9770 cut-off events. For 37481/37574 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 67565 event pairs, 1588 based on Foata normal form. 4/9735 useless extension candidates. Maximal degree in co-relation 40380. Up to 5804 conditions per place. [2023-08-25 19:42:05,251 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 144 selfloop transitions, 11 changer transitions 102/265 dead transitions. [2023-08-25 19:42:05,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 265 transitions, 2389 flow [2023-08-25 19:42:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2557 transitions. [2023-08-25 19:42:05,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506101741395859 [2023-08-25 19:42:05,253 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2557 transitions. [2023-08-25 19:42:05,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2557 transitions. [2023-08-25 19:42:05,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:05,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2557 transitions. [2023-08-25 19:42:05,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 232.45454545454547) internal successors, (2557), 11 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:05,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:05,258 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:05,258 INFO L175 Difference]: Start difference. First operand has 199 places, 139 transitions, 1139 flow. Second operand 11 states and 2557 transitions. [2023-08-25 19:42:05,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 265 transitions, 2389 flow [2023-08-25 19:42:05,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 265 transitions, 2334 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-25 19:42:05,363 INFO L231 Difference]: Finished difference. Result has 190 places, 118 transitions, 897 flow [2023-08-25 19:42:05,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=897, PETRI_PLACES=190, PETRI_TRANSITIONS=118} [2023-08-25 19:42:05,363 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 56 predicate places. [2023-08-25 19:42:05,363 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 118 transitions, 897 flow [2023-08-25 19:42:05,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:05,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:05,364 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:05,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:05,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:05,570 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:05,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash -340974503, now seen corresponding path program 31 times [2023-08-25 19:42:05,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:05,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931985740] [2023-08-25 19:42:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:05,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931985740] [2023-08-25 19:42:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931985740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785653370] [2023-08-25 19:42:06,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:42:06,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:06,350 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:06,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 19:42:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:06,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:42:06,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:06,806 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:06,806 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:06,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:06,964 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:42:06,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:42:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785653370] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:07,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:42:07,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 8] total 22 [2023-08-25 19:42:07,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249157293] [2023-08-25 19:42:07,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:07,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:07,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:07,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:07,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:42:07,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:07,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 118 transitions, 897 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:07,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:07,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:07,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:07,917 INFO L124 PetriNetUnfolderBase]: 3649/6734 cut-off events. [2023-08-25 19:42:07,917 INFO L125 PetriNetUnfolderBase]: For 22112/22206 co-relation queries the response was YES. [2023-08-25 19:42:07,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26717 conditions, 6734 events. 3649/6734 cut-off events. For 22112/22206 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 42747 event pairs, 1173 based on Foata normal form. 2/6719 useless extension candidates. Maximal degree in co-relation 26658. Up to 4016 conditions per place. [2023-08-25 19:42:07,962 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 145 selfloop transitions, 17 changer transitions 32/206 dead transitions. [2023-08-25 19:42:07,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 206 transitions, 1789 flow [2023-08-25 19:42:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:42:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:42:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2265 transitions. [2023-08-25 19:42:07,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.379587732528909 [2023-08-25 19:42:07,964 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2265 transitions. [2023-08-25 19:42:07,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2265 transitions. [2023-08-25 19:42:07,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:07,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2265 transitions. [2023-08-25 19:42:07,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 251.66666666666666) internal successors, (2265), 9 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:07,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:07,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:07,968 INFO L175 Difference]: Start difference. First operand has 190 places, 118 transitions, 897 flow. Second operand 9 states and 2265 transitions. [2023-08-25 19:42:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 206 transitions, 1789 flow [2023-08-25 19:42:08,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 206 transitions, 1704 flow, removed 24 selfloop flow, removed 20 redundant places. [2023-08-25 19:42:08,012 INFO L231 Difference]: Finished difference. Result has 161 places, 116 transitions, 864 flow [2023-08-25 19:42:08,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=864, PETRI_PLACES=161, PETRI_TRANSITIONS=116} [2023-08-25 19:42:08,012 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 27 predicate places. [2023-08-25 19:42:08,012 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 116 transitions, 864 flow [2023-08-25 19:42:08,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:08,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:08,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:08,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:08,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:08,218 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:08,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:08,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1165443419, now seen corresponding path program 32 times [2023-08-25 19:42:08,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:08,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018829603] [2023-08-25 19:42:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:08,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:09,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:09,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018829603] [2023-08-25 19:42:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018829603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:09,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012038692] [2023-08-25 19:42:09,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:42:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:09,641 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:09,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 19:42:10,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:42:10,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:10,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 19:42:10,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:10,309 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:10,310 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:10,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012038692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:10,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:10,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-25 19:42:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742244643] [2023-08-25 19:42:10,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:10,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:10,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-08-25 19:42:10,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:10,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 116 transitions, 864 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:10,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:10,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:10,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:11,331 INFO L124 PetriNetUnfolderBase]: 3649/6774 cut-off events. [2023-08-25 19:42:11,331 INFO L125 PetriNetUnfolderBase]: For 21094/21188 co-relation queries the response was YES. [2023-08-25 19:42:11,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26202 conditions, 6774 events. 3649/6774 cut-off events. For 21094/21188 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 43390 event pairs, 1189 based on Foata normal form. 2/6757 useless extension candidates. Maximal degree in co-relation 26152. Up to 3980 conditions per place. [2023-08-25 19:42:11,373 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 156 selfloop transitions, 16 changer transitions 43/227 dead transitions. [2023-08-25 19:42:11,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 227 transitions, 1879 flow [2023-08-25 19:42:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2763 transitions. [2023-08-25 19:42:11,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3788564376799671 [2023-08-25 19:42:11,375 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2763 transitions. [2023-08-25 19:42:11,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2763 transitions. [2023-08-25 19:42:11,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:11,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2763 transitions. [2023-08-25 19:42:11,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 251.1818181818182) internal successors, (2763), 11 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:11,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:11,380 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:11,380 INFO L175 Difference]: Start difference. First operand has 161 places, 116 transitions, 864 flow. Second operand 11 states and 2763 transitions. [2023-08-25 19:42:11,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 227 transitions, 1879 flow [2023-08-25 19:42:11,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 227 transitions, 1817 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-25 19:42:11,423 INFO L231 Difference]: Finished difference. Result has 164 places, 115 transitions, 839 flow [2023-08-25 19:42:11,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=839, PETRI_PLACES=164, PETRI_TRANSITIONS=115} [2023-08-25 19:42:11,424 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 30 predicate places. [2023-08-25 19:42:11,424 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 115 transitions, 839 flow [2023-08-25 19:42:11,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:11,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:11,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:11,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:11,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-25 19:42:11,631 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:11,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:11,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1012420195, now seen corresponding path program 33 times [2023-08-25 19:42:11,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:11,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537891013] [2023-08-25 19:42:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:11,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:12,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:12,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537891013] [2023-08-25 19:42:12,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537891013] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:12,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283046596] [2023-08-25 19:42:12,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:42:12,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:12,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:12,745 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:12,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 19:42:13,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:42:13,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:13,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:42:13,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:13,249 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:13,249 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:13,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283046596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-25 19:42:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028734581] [2023-08-25 19:42:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-08-25 19:42:13,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:13,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 115 transitions, 839 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:13,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:13,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:13,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:14,250 INFO L124 PetriNetUnfolderBase]: 3575/6620 cut-off events. [2023-08-25 19:42:14,250 INFO L125 PetriNetUnfolderBase]: For 19050/19146 co-relation queries the response was YES. [2023-08-25 19:42:14,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25298 conditions, 6620 events. 3575/6620 cut-off events. For 19050/19146 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 42086 event pairs, 1189 based on Foata normal form. 4/6605 useless extension candidates. Maximal degree in co-relation 25246. Up to 3980 conditions per place. [2023-08-25 19:42:14,290 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 156 selfloop transitions, 15 changer transitions 30/213 dead transitions. [2023-08-25 19:42:14,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 213 transitions, 1753 flow [2023-08-25 19:42:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2749 transitions. [2023-08-25 19:42:14,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769367887014946 [2023-08-25 19:42:14,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2749 transitions. [2023-08-25 19:42:14,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2749 transitions. [2023-08-25 19:42:14,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:14,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2749 transitions. [2023-08-25 19:42:14,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 249.9090909090909) internal successors, (2749), 11 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:14,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:14,297 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:14,297 INFO L175 Difference]: Start difference. First operand has 164 places, 115 transitions, 839 flow. Second operand 11 states and 2749 transitions. [2023-08-25 19:42:14,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 213 transitions, 1753 flow [2023-08-25 19:42:14,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 213 transitions, 1695 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-08-25 19:42:14,339 INFO L231 Difference]: Finished difference. Result has 163 places, 114 transitions, 829 flow [2023-08-25 19:42:14,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=829, PETRI_PLACES=163, PETRI_TRANSITIONS=114} [2023-08-25 19:42:14,339 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 29 predicate places. [2023-08-25 19:42:14,339 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 114 transitions, 829 flow [2023-08-25 19:42:14,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:14,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:14,340 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:14,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-25 19:42:14,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-25 19:42:14,546 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:14,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:14,546 INFO L85 PathProgramCache]: Analyzing trace with hash 745226619, now seen corresponding path program 34 times [2023-08-25 19:42:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:14,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730566707] [2023-08-25 19:42:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730566707] [2023-08-25 19:42:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730566707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34647446] [2023-08-25 19:42:15,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:42:15,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:15,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:15,873 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:15,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 19:42:16,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:42:16,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:16,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:42:16,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:16,456 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:16,457 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:16,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34647446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-08-25 19:42:16,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381473625] [2023-08-25 19:42:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:16,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:16,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:16,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:16,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:42:16,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:16,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 114 transitions, 829 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:16,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:16,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:16,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:17,392 INFO L124 PetriNetUnfolderBase]: 3507/6472 cut-off events. [2023-08-25 19:42:17,392 INFO L125 PetriNetUnfolderBase]: For 17444/17540 co-relation queries the response was YES. [2023-08-25 19:42:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24684 conditions, 6472 events. 3507/6472 cut-off events. For 17444/17540 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 40790 event pairs, 1189 based on Foata normal form. 4/6457 useless extension candidates. Maximal degree in co-relation 24634. Up to 3980 conditions per place. [2023-08-25 19:42:17,439 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 107 selfloop transitions, 10 changer transitions 64/193 dead transitions. [2023-08-25 19:42:17,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 193 transitions, 1588 flow [2023-08-25 19:42:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:42:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:42:17,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2259 transitions. [2023-08-25 19:42:17,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37858220211161386 [2023-08-25 19:42:17,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2259 transitions. [2023-08-25 19:42:17,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2259 transitions. [2023-08-25 19:42:17,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:17,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2259 transitions. [2023-08-25 19:42:17,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:17,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:17,449 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:17,449 INFO L175 Difference]: Start difference. First operand has 163 places, 114 transitions, 829 flow. Second operand 9 states and 2259 transitions. [2023-08-25 19:42:17,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 193 transitions, 1588 flow [2023-08-25 19:42:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 193 transitions, 1536 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-25 19:42:17,491 INFO L231 Difference]: Finished difference. Result has 161 places, 108 transitions, 762 flow [2023-08-25 19:42:17,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=762, PETRI_PLACES=161, PETRI_TRANSITIONS=108} [2023-08-25 19:42:17,493 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 27 predicate places. [2023-08-25 19:42:17,493 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 108 transitions, 762 flow [2023-08-25 19:42:17,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:17,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:17,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:17,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:17,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-25 19:42:17,697 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:17,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1992966355, now seen corresponding path program 35 times [2023-08-25 19:42:17,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:17,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180883213] [2023-08-25 19:42:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180883213] [2023-08-25 19:42:18,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180883213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207173042] [2023-08-25 19:42:18,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:42:18,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:18,523 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:18,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 19:42:18,927 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:42:18,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:18,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:42:18,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:19,068 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:19,068 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:19,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:19,218 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:42:19,218 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:42:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:19,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207173042] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:19,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:42:19,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 8] total 22 [2023-08-25 19:42:19,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067853599] [2023-08-25 19:42:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:19,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:19,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:19,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:19,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:42:19,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:19,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 108 transitions, 762 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:19,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:19,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:19,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:20,250 INFO L124 PetriNetUnfolderBase]: 3495/6498 cut-off events. [2023-08-25 19:42:20,250 INFO L125 PetriNetUnfolderBase]: For 16798/16892 co-relation queries the response was YES. [2023-08-25 19:42:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24521 conditions, 6498 events. 3495/6498 cut-off events. For 16798/16892 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 41852 event pairs, 1022 based on Foata normal form. 4/6483 useless extension candidates. Maximal degree in co-relation 24472. Up to 2172 conditions per place. [2023-08-25 19:42:20,284 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 164 selfloop transitions, 25 changer transitions 47/248 dead transitions. [2023-08-25 19:42:20,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 248 transitions, 2077 flow [2023-08-25 19:42:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2778 transitions. [2023-08-25 19:42:20,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3809132044426162 [2023-08-25 19:42:20,290 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2778 transitions. [2023-08-25 19:42:20,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2778 transitions. [2023-08-25 19:42:20,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:20,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2778 transitions. [2023-08-25 19:42:20,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 252.54545454545453) internal successors, (2778), 11 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:20,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:20,295 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:20,295 INFO L175 Difference]: Start difference. First operand has 161 places, 108 transitions, 762 flow. Second operand 11 states and 2778 transitions. [2023-08-25 19:42:20,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 248 transitions, 2077 flow [2023-08-25 19:42:20,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 248 transitions, 2031 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-25 19:42:20,333 INFO L231 Difference]: Finished difference. Result has 157 places, 108 transitions, 821 flow [2023-08-25 19:42:20,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=821, PETRI_PLACES=157, PETRI_TRANSITIONS=108} [2023-08-25 19:42:20,333 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 23 predicate places. [2023-08-25 19:42:20,333 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 108 transitions, 821 flow [2023-08-25 19:42:20,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:20,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:20,334 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:20,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-25 19:42:20,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-25 19:42:20,540 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:20,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:20,542 INFO L85 PathProgramCache]: Analyzing trace with hash 114929661, now seen corresponding path program 36 times [2023-08-25 19:42:20,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:20,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455764363] [2023-08-25 19:42:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:20,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:21,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455764363] [2023-08-25 19:42:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455764363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851801414] [2023-08-25 19:42:21,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:42:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:21,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:21,743 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:21,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 19:42:22,400 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:42:22,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:22,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:42:22,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:22,537 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:22,538 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:22,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:22,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851801414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:22,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:22,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-08-25 19:42:22,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267388289] [2023-08-25 19:42:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:22,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:22,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:42:22,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:22,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 108 transitions, 821 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:22,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:22,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:22,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:23,432 INFO L124 PetriNetUnfolderBase]: 3129/6108 cut-off events. [2023-08-25 19:42:23,432 INFO L125 PetriNetUnfolderBase]: For 16736/16858 co-relation queries the response was YES. [2023-08-25 19:42:23,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22420 conditions, 6108 events. 3129/6108 cut-off events. For 16736/16858 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 41302 event pairs, 1232 based on Foata normal form. 2/6090 useless extension candidates. Maximal degree in co-relation 22370. Up to 3150 conditions per place. [2023-08-25 19:42:23,473 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 159 selfloop transitions, 20 changer transitions 27/218 dead transitions. [2023-08-25 19:42:23,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 218 transitions, 1896 flow [2023-08-25 19:42:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:42:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:42:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2517 transitions. [2023-08-25 19:42:23,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37963800904977374 [2023-08-25 19:42:23,475 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2517 transitions. [2023-08-25 19:42:23,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2517 transitions. [2023-08-25 19:42:23,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:23,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2517 transitions. [2023-08-25 19:42:23,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.7) internal successors, (2517), 10 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:23,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:23,480 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:23,480 INFO L175 Difference]: Start difference. First operand has 157 places, 108 transitions, 821 flow. Second operand 10 states and 2517 transitions. [2023-08-25 19:42:23,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 218 transitions, 1896 flow [2023-08-25 19:42:23,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 218 transitions, 1754 flow, removed 47 selfloop flow, removed 11 redundant places. [2023-08-25 19:42:23,509 INFO L231 Difference]: Finished difference. Result has 154 places, 114 transitions, 870 flow [2023-08-25 19:42:23,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=870, PETRI_PLACES=154, PETRI_TRANSITIONS=114} [2023-08-25 19:42:23,510 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 20 predicate places. [2023-08-25 19:42:23,510 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 114 transitions, 870 flow [2023-08-25 19:42:23,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:23,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:23,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:23,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-25 19:42:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:23,716 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:23,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2090524407, now seen corresponding path program 37 times [2023-08-25 19:42:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534218900] [2023-08-25 19:42:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:23,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534218900] [2023-08-25 19:42:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534218900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128997592] [2023-08-25 19:42:25,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:42:25,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:25,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:25,021 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:25,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 19:42:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:25,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:42:25,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:25,579 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:25,580 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:25,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:25,711 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:42:25,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:42:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:25,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128997592] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:25,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:42:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14, 8] total 24 [2023-08-25 19:42:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436894262] [2023-08-25 19:42:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:25,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2023-08-25 19:42:25,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:25,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 114 transitions, 870 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:25,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:25,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:25,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:26,647 INFO L124 PetriNetUnfolderBase]: 3422/6895 cut-off events. [2023-08-25 19:42:26,647 INFO L125 PetriNetUnfolderBase]: For 17857/17987 co-relation queries the response was YES. [2023-08-25 19:42:26,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24120 conditions, 6895 events. 3422/6895 cut-off events. For 17857/17987 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 49328 event pairs, 1331 based on Foata normal form. 8/6882 useless extension candidates. Maximal degree in co-relation 24076. Up to 3265 conditions per place. [2023-08-25 19:42:26,685 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 169 selfloop transitions, 29 changer transitions 47/257 dead transitions. [2023-08-25 19:42:26,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 257 transitions, 2120 flow [2023-08-25 19:42:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2784 transitions. [2023-08-25 19:42:26,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38173591114767585 [2023-08-25 19:42:26,688 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2784 transitions. [2023-08-25 19:42:26,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2784 transitions. [2023-08-25 19:42:26,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:26,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2784 transitions. [2023-08-25 19:42:26,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 253.0909090909091) internal successors, (2784), 11 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:26,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:26,692 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:26,692 INFO L175 Difference]: Start difference. First operand has 154 places, 114 transitions, 870 flow. Second operand 11 states and 2784 transitions. [2023-08-25 19:42:26,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 257 transitions, 2120 flow [2023-08-25 19:42:26,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 257 transitions, 2028 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-08-25 19:42:26,732 INFO L231 Difference]: Finished difference. Result has 163 places, 119 transitions, 947 flow [2023-08-25 19:42:26,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=947, PETRI_PLACES=163, PETRI_TRANSITIONS=119} [2023-08-25 19:42:26,732 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 29 predicate places. [2023-08-25 19:42:26,732 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 119 transitions, 947 flow [2023-08-25 19:42:26,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:26,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:26,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:26,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:26,938 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:26,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 234607287, now seen corresponding path program 38 times [2023-08-25 19:42:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862221875] [2023-08-25 19:42:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862221875] [2023-08-25 19:42:27,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862221875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148332309] [2023-08-25 19:42:27,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:42:27,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:27,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:27,437 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:27,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 19:42:28,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:42:28,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:28,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:42:28,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:28,154 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:28,154 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:28,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:28,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148332309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:28,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:28,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2023-08-25 19:42:28,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845132181] [2023-08-25 19:42:28,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:28,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:28,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-08-25 19:42:28,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:28,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 119 transitions, 947 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:28,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:28,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:28,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:29,072 INFO L124 PetriNetUnfolderBase]: 3040/6085 cut-off events. [2023-08-25 19:42:29,072 INFO L125 PetriNetUnfolderBase]: For 16204/16326 co-relation queries the response was YES. [2023-08-25 19:42:29,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21824 conditions, 6085 events. 3040/6085 cut-off events. For 16204/16326 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 41973 event pairs, 1257 based on Foata normal form. 2/6067 useless extension candidates. Maximal degree in co-relation 21775. Up to 3248 conditions per place. [2023-08-25 19:42:29,116 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 145 selfloop transitions, 18 changer transitions 34/209 dead transitions. [2023-08-25 19:42:29,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 209 transitions, 1781 flow [2023-08-25 19:42:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:42:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:42:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2508 transitions. [2023-08-25 19:42:29,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782805429864253 [2023-08-25 19:42:29,118 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2508 transitions. [2023-08-25 19:42:29,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2508 transitions. [2023-08-25 19:42:29,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:29,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2508 transitions. [2023-08-25 19:42:29,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.8) internal successors, (2508), 10 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:29,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:29,122 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:29,122 INFO L175 Difference]: Start difference. First operand has 163 places, 119 transitions, 947 flow. Second operand 10 states and 2508 transitions. [2023-08-25 19:42:29,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 209 transitions, 1781 flow [2023-08-25 19:42:29,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 209 transitions, 1697 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-08-25 19:42:29,166 INFO L231 Difference]: Finished difference. Result has 168 places, 114 transitions, 846 flow [2023-08-25 19:42:29,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=846, PETRI_PLACES=168, PETRI_TRANSITIONS=114} [2023-08-25 19:42:29,166 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 34 predicate places. [2023-08-25 19:42:29,167 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 114 transitions, 846 flow [2023-08-25 19:42:29,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:29,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:29,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:29,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-25 19:42:29,373 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:29,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:29,373 INFO L85 PathProgramCache]: Analyzing trace with hash 990687793, now seen corresponding path program 39 times [2023-08-25 19:42:29,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:29,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455091330] [2023-08-25 19:42:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455091330] [2023-08-25 19:42:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455091330] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167286857] [2023-08-25 19:42:30,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:42:30,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:30,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:30,614 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:30,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 19:42:31,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:42:31,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:31,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 19:42:31,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:31,509 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:31,509 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:31,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:31,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167286857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:31,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:31,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-25 19:42:31,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737689799] [2023-08-25 19:42:31,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:31,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:31,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-08-25 19:42:31,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:31,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 114 transitions, 846 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:31,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:31,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:32,250 INFO L124 PetriNetUnfolderBase]: 2662/5467 cut-off events. [2023-08-25 19:42:32,251 INFO L125 PetriNetUnfolderBase]: For 12463/12585 co-relation queries the response was YES. [2023-08-25 19:42:32,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18872 conditions, 5467 events. 2662/5467 cut-off events. For 12463/12585 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 37638 event pairs, 1229 based on Foata normal form. 2/5446 useless extension candidates. Maximal degree in co-relation 18823. Up to 3040 conditions per place. [2023-08-25 19:42:32,289 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 145 selfloop transitions, 17 changer transitions 30/204 dead transitions. [2023-08-25 19:42:32,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 204 transitions, 1637 flow [2023-08-25 19:42:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:42:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:42:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2275 transitions. [2023-08-25 19:42:32,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812636165577342 [2023-08-25 19:42:32,291 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2275 transitions. [2023-08-25 19:42:32,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2275 transitions. [2023-08-25 19:42:32,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:32,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2275 transitions. [2023-08-25 19:42:32,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 252.77777777777777) internal successors, (2275), 9 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:32,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:32,295 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:32,295 INFO L175 Difference]: Start difference. First operand has 168 places, 114 transitions, 846 flow. Second operand 9 states and 2275 transitions. [2023-08-25 19:42:32,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 204 transitions, 1637 flow [2023-08-25 19:42:32,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 204 transitions, 1579 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-25 19:42:32,319 INFO L231 Difference]: Finished difference. Result has 162 places, 109 transitions, 788 flow [2023-08-25 19:42:32,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=788, PETRI_PLACES=162, PETRI_TRANSITIONS=109} [2023-08-25 19:42:32,319 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 28 predicate places. [2023-08-25 19:42:32,319 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 109 transitions, 788 flow [2023-08-25 19:42:32,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:32,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:32,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:32,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:32,527 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:32,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -285303671, now seen corresponding path program 40 times [2023-08-25 19:42:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:32,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098345603] [2023-08-25 19:42:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:33,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:33,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098345603] [2023-08-25 19:42:33,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098345603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:33,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355740039] [2023-08-25 19:42:33,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:42:33,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:33,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:33,279 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:33,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 19:42:33,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:42:33,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:33,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:42:33,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:33,870 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:33,871 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:33,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:33,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355740039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:33,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:33,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-25 19:42:33,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616497563] [2023-08-25 19:42:33,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-08-25 19:42:33,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:33,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 109 transitions, 788 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:33,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:33,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:33,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:34,595 INFO L124 PetriNetUnfolderBase]: 2522/5169 cut-off events. [2023-08-25 19:42:34,595 INFO L125 PetriNetUnfolderBase]: For 11031/11153 co-relation queries the response was YES. [2023-08-25 19:42:34,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17734 conditions, 5169 events. 2522/5169 cut-off events. For 11031/11153 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 35263 event pairs, 1225 based on Foata normal form. 2/5151 useless extension candidates. Maximal degree in co-relation 17687. Up to 3026 conditions per place. [2023-08-25 19:42:34,622 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 139 selfloop transitions, 12 changer transitions 30/193 dead transitions. [2023-08-25 19:42:34,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 193 transitions, 1524 flow [2023-08-25 19:42:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:34,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2745 transitions. [2023-08-25 19:42:34,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37638831756478813 [2023-08-25 19:42:34,641 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2745 transitions. [2023-08-25 19:42:34,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2745 transitions. [2023-08-25 19:42:34,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:34,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2745 transitions. [2023-08-25 19:42:34,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 249.54545454545453) internal successors, (2745), 11 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:34,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:34,646 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:34,646 INFO L175 Difference]: Start difference. First operand has 162 places, 109 transitions, 788 flow. Second operand 11 states and 2745 transitions. [2023-08-25 19:42:34,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 193 transitions, 1524 flow [2023-08-25 19:42:34,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 193 transitions, 1477 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-25 19:42:34,685 INFO L231 Difference]: Finished difference. Result has 161 places, 103 transitions, 705 flow [2023-08-25 19:42:34,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=705, PETRI_PLACES=161, PETRI_TRANSITIONS=103} [2023-08-25 19:42:34,686 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 27 predicate places. [2023-08-25 19:42:34,686 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 103 transitions, 705 flow [2023-08-25 19:42:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:34,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:34,686 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:34,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:34,892 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:34,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1739204983, now seen corresponding path program 41 times [2023-08-25 19:42:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438621255] [2023-08-25 19:42:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438621255] [2023-08-25 19:42:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438621255] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:35,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959283209] [2023-08-25 19:42:35,693 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:42:35,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:35,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:35,694 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:35,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 19:42:36,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:42:36,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:36,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:42:36,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:36,217 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:36,217 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:36,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:36,392 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:42:36,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:42:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:36,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959283209] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:36,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:42:36,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 8] total 22 [2023-08-25 19:42:36,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495485118] [2023-08-25 19:42:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:36,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:36,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:42:36,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:36,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 103 transitions, 705 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:36,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:36,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:36,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:37,252 INFO L124 PetriNetUnfolderBase]: 2454/5127 cut-off events. [2023-08-25 19:42:37,253 INFO L125 PetriNetUnfolderBase]: For 10483/10568 co-relation queries the response was YES. [2023-08-25 19:42:37,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 5127 events. 2454/5127 cut-off events. For 10483/10568 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 35405 event pairs, 934 based on Foata normal form. 4/5107 useless extension candidates. Maximal degree in co-relation 17081. Up to 1649 conditions per place. [2023-08-25 19:42:37,283 INFO L140 encePairwiseOnDemand]: 653/663 looper letters, 168 selfloop transitions, 21 changer transitions 50/251 dead transitions. [2023-08-25 19:42:37,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 251 transitions, 1924 flow [2023-08-25 19:42:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 19:42:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 19:42:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3031 transitions. [2023-08-25 19:42:37,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3809703368526898 [2023-08-25 19:42:37,286 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3031 transitions. [2023-08-25 19:42:37,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3031 transitions. [2023-08-25 19:42:37,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:37,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3031 transitions. [2023-08-25 19:42:37,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 252.58333333333334) internal successors, (3031), 12 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:37,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 663.0) internal successors, (8619), 13 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:37,291 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 663.0) internal successors, (8619), 13 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:37,291 INFO L175 Difference]: Start difference. First operand has 161 places, 103 transitions, 705 flow. Second operand 12 states and 3031 transitions. [2023-08-25 19:42:37,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 251 transitions, 1924 flow [2023-08-25 19:42:37,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 251 transitions, 1867 flow, removed 7 selfloop flow, removed 14 redundant places. [2023-08-25 19:42:37,311 INFO L231 Difference]: Finished difference. Result has 155 places, 101 transitions, 701 flow [2023-08-25 19:42:37,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=701, PETRI_PLACES=155, PETRI_TRANSITIONS=101} [2023-08-25 19:42:37,311 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 21 predicate places. [2023-08-25 19:42:37,311 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 101 transitions, 701 flow [2023-08-25 19:42:37,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:37,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:37,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:37,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-25 19:42:37,518 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:37,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash -141974591, now seen corresponding path program 42 times [2023-08-25 19:42:37,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:37,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776130072] [2023-08-25 19:42:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:38,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776130072] [2023-08-25 19:42:38,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776130072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:38,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301395704] [2023-08-25 19:42:38,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:42:38,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:38,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:38,730 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:38,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 19:42:39,234 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:42:39,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:39,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 19:42:39,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:39,358 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:39,358 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:39,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301395704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2023-08-25 19:42:39,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654988810] [2023-08-25 19:42:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:39,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:39,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:39,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-08-25 19:42:39,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:39,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 101 transitions, 701 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:39,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:39,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:39,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:40,083 INFO L124 PetriNetUnfolderBase]: 2262/4519 cut-off events. [2023-08-25 19:42:40,083 INFO L125 PetriNetUnfolderBase]: For 9249/9364 co-relation queries the response was YES. [2023-08-25 19:42:40,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15608 conditions, 4519 events. 2262/4519 cut-off events. For 9249/9364 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29207 event pairs, 1057 based on Foata normal form. 2/4500 useless extension candidates. Maximal degree in co-relation 15563. Up to 1746 conditions per place. [2023-08-25 19:42:40,107 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 139 selfloop transitions, 10 changer transitions 37/198 dead transitions. [2023-08-25 19:42:40,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 198 transitions, 1552 flow [2023-08-25 19:42:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:42:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:42:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2513 transitions. [2023-08-25 19:42:40,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37903469079939667 [2023-08-25 19:42:40,109 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2513 transitions. [2023-08-25 19:42:40,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2513 transitions. [2023-08-25 19:42:40,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:40,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2513 transitions. [2023-08-25 19:42:40,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.3) internal successors, (2513), 10 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:40,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:40,113 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:40,113 INFO L175 Difference]: Start difference. First operand has 155 places, 101 transitions, 701 flow. Second operand 10 states and 2513 transitions. [2023-08-25 19:42:40,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 198 transitions, 1552 flow [2023-08-25 19:42:40,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 198 transitions, 1485 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-08-25 19:42:40,129 INFO L231 Difference]: Finished difference. Result has 152 places, 93 transitions, 594 flow [2023-08-25 19:42:40,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=594, PETRI_PLACES=152, PETRI_TRANSITIONS=93} [2023-08-25 19:42:40,130 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 18 predicate places. [2023-08-25 19:42:40,130 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 93 transitions, 594 flow [2023-08-25 19:42:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:40,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:40,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:40,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-25 19:42:40,337 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:40,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash 320335315, now seen corresponding path program 43 times [2023-08-25 19:42:40,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:40,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040153465] [2023-08-25 19:42:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:41,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040153465] [2023-08-25 19:42:41,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040153465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869990851] [2023-08-25 19:42:41,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:42:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:41,675 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:41,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 19:42:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:42,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-25 19:42:42,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:42,249 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:42,249 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:42,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:42,396 INFO L322 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2023-08-25 19:42:42,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2023-08-25 19:42:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869990851] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:42,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:42:42,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13, 8] total 23 [2023-08-25 19:42:42,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567665121] [2023-08-25 19:42:42,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:42,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 19:42:42,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 19:42:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:42:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 663 [2023-08-25 19:42:42,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 93 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 663 [2023-08-25 19:42:42,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:43,110 INFO L124 PetriNetUnfolderBase]: 1976/4045 cut-off events. [2023-08-25 19:42:43,110 INFO L125 PetriNetUnfolderBase]: For 7604/7727 co-relation queries the response was YES. [2023-08-25 19:42:43,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13602 conditions, 4045 events. 1976/4045 cut-off events. For 7604/7727 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26240 event pairs, 1057 based on Foata normal form. 6/4030 useless extension candidates. Maximal degree in co-relation 13558. Up to 1498 conditions per place. [2023-08-25 19:42:43,130 INFO L140 encePairwiseOnDemand]: 655/663 looper letters, 141 selfloop transitions, 6 changer transitions 46/205 dead transitions. [2023-08-25 19:42:43,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 205 transitions, 1518 flow [2023-08-25 19:42:43,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 19:42:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 19:42:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2766 transitions. [2023-08-25 19:42:43,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3792677910324969 [2023-08-25 19:42:43,132 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2766 transitions. [2023-08-25 19:42:43,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2766 transitions. [2023-08-25 19:42:43,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:43,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2766 transitions. [2023-08-25 19:42:43,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 251.45454545454547) internal successors, (2766), 11 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:43,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:43,136 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 663.0) internal successors, (7956), 12 states have internal predecessors, (7956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:43,136 INFO L175 Difference]: Start difference. First operand has 152 places, 93 transitions, 594 flow. Second operand 11 states and 2766 transitions. [2023-08-25 19:42:43,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 205 transitions, 1518 flow [2023-08-25 19:42:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 205 transitions, 1460 flow, removed 16 selfloop flow, removed 11 redundant places. [2023-08-25 19:42:43,150 INFO L231 Difference]: Finished difference. Result has 145 places, 87 transitions, 534 flow [2023-08-25 19:42:43,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=534, PETRI_PLACES=145, PETRI_TRANSITIONS=87} [2023-08-25 19:42:43,151 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 11 predicate places. [2023-08-25 19:42:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 87 transitions, 534 flow [2023-08-25 19:42:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.75) internal successors, (1942), 8 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:43,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:43,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:43,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-25 19:42:43,357 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:43,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 835308985, now seen corresponding path program 44 times [2023-08-25 19:42:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:43,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660778836] [2023-08-25 19:42:43,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660778836] [2023-08-25 19:42:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660778836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111637039] [2023-08-25 19:42:44,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:42:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:44,361 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:44,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 19:42:44,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:42:45,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:45,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 19:42:45,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:45,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:42:45,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:42:45,213 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:45,214 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:45,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:45,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111637039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:45,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:45,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2023-08-25 19:42:45,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969555538] [2023-08-25 19:42:45,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:45,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:42:45,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:42:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:42:45,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:42:45,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 87 transitions, 534 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:45,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:45,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:42:45,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:45,920 INFO L124 PetriNetUnfolderBase]: 1919/4054 cut-off events. [2023-08-25 19:42:45,920 INFO L125 PetriNetUnfolderBase]: For 7628/7743 co-relation queries the response was YES. [2023-08-25 19:42:45,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 4054 events. 1919/4054 cut-off events. For 7628/7743 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26610 event pairs, 1193 based on Foata normal form. 2/4034 useless extension candidates. Maximal degree in co-relation 13248. Up to 1861 conditions per place. [2023-08-25 19:42:45,945 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 112 selfloop transitions, 11 changer transitions 49/180 dead transitions. [2023-08-25 19:42:45,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 180 transitions, 1304 flow [2023-08-25 19:42:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:42:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:42:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2102 transitions. [2023-08-25 19:42:45,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35227082285905814 [2023-08-25 19:42:45,947 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2102 transitions. [2023-08-25 19:42:45,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2102 transitions. [2023-08-25 19:42:45,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:45,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2102 transitions. [2023-08-25 19:42:45,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 233.55555555555554) internal successors, (2102), 9 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:45,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:45,951 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:45,951 INFO L175 Difference]: Start difference. First operand has 145 places, 87 transitions, 534 flow. Second operand 9 states and 2102 transitions. [2023-08-25 19:42:45,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 180 transitions, 1304 flow [2023-08-25 19:42:45,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 180 transitions, 1263 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-08-25 19:42:45,965 INFO L231 Difference]: Finished difference. Result has 138 places, 88 transitions, 562 flow [2023-08-25 19:42:45,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=562, PETRI_PLACES=138, PETRI_TRANSITIONS=88} [2023-08-25 19:42:45,966 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 4 predicate places. [2023-08-25 19:42:45,966 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 88 transitions, 562 flow [2023-08-25 19:42:45,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:45,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:45,966 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:45,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:46,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:46,174 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:46,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:46,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1672586625, now seen corresponding path program 45 times [2023-08-25 19:42:46,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:46,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368646629] [2023-08-25 19:42:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368646629] [2023-08-25 19:42:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368646629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128601009] [2023-08-25 19:42:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:42:47,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:47,185 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:47,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 19:42:47,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:42:47,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:47,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 19:42:47,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:47,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:42:47,772 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:42:47,910 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:47,911 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:47,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128601009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:47,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:47,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2023-08-25 19:42:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999998708] [2023-08-25 19:42:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:47,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:42:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:42:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-08-25 19:42:47,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:42:47,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 88 transitions, 562 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:47,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:47,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:42:47,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:48,691 INFO L124 PetriNetUnfolderBase]: 1873/3938 cut-off events. [2023-08-25 19:42:48,691 INFO L125 PetriNetUnfolderBase]: For 7815/7942 co-relation queries the response was YES. [2023-08-25 19:42:48,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13192 conditions, 3938 events. 1873/3938 cut-off events. For 7815/7942 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 25692 event pairs, 1095 based on Foata normal form. 2/3919 useless extension candidates. Maximal degree in co-relation 13151. Up to 1865 conditions per place. [2023-08-25 19:42:48,709 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 119 selfloop transitions, 11 changer transitions 34/172 dead transitions. [2023-08-25 19:42:48,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 172 transitions, 1280 flow [2023-08-25 19:42:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:42:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:42:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2096 transitions. [2023-08-25 19:42:48,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351265292441763 [2023-08-25 19:42:48,711 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2096 transitions. [2023-08-25 19:42:48,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2096 transitions. [2023-08-25 19:42:48,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:48,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2096 transitions. [2023-08-25 19:42:48,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 232.88888888888889) internal successors, (2096), 9 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:48,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:48,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:48,715 INFO L175 Difference]: Start difference. First operand has 138 places, 88 transitions, 562 flow. Second operand 9 states and 2096 transitions. [2023-08-25 19:42:48,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 172 transitions, 1280 flow [2023-08-25 19:42:48,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 172 transitions, 1252 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-25 19:42:48,727 INFO L231 Difference]: Finished difference. Result has 140 places, 90 transitions, 591 flow [2023-08-25 19:42:48,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=591, PETRI_PLACES=140, PETRI_TRANSITIONS=90} [2023-08-25 19:42:48,728 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 6 predicate places. [2023-08-25 19:42:48,728 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 90 transitions, 591 flow [2023-08-25 19:42:48,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:48,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:48,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:48,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-25 19:42:48,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-25 19:42:48,936 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:48,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -238490947, now seen corresponding path program 46 times [2023-08-25 19:42:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060463874] [2023-08-25 19:42:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:50,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:50,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060463874] [2023-08-25 19:42:50,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060463874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:50,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337506785] [2023-08-25 19:42:50,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:42:50,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:50,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:50,466 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:50,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 19:42:51,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:42:51,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:51,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-25 19:42:51,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:51,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:42:51,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:42:51,481 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:51,481 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:51,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337506785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:51,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 22 [2023-08-25 19:42:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642827854] [2023-08-25 19:42:51,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:51,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:42:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:42:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:42:51,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:42:51,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 90 transitions, 591 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:51,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:51,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:42:51,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:52,291 INFO L124 PetriNetUnfolderBase]: 1807/3724 cut-off events. [2023-08-25 19:42:52,291 INFO L125 PetriNetUnfolderBase]: For 7837/7968 co-relation queries the response was YES. [2023-08-25 19:42:52,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12696 conditions, 3724 events. 1807/3724 cut-off events. For 7837/7968 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23494 event pairs, 1095 based on Foata normal form. 2/3705 useless extension candidates. Maximal degree in co-relation 12654. Up to 1715 conditions per place. [2023-08-25 19:42:52,312 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 105 selfloop transitions, 11 changer transitions 36/160 dead transitions. [2023-08-25 19:42:52,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 160 transitions, 1207 flow [2023-08-25 19:42:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 19:42:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 19:42:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2304 transitions. [2023-08-25 19:42:52,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34751131221719456 [2023-08-25 19:42:52,314 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2304 transitions. [2023-08-25 19:42:52,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2304 transitions. [2023-08-25 19:42:52,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:52,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2304 transitions. [2023-08-25 19:42:52,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 230.4) internal successors, (2304), 10 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:52,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:52,318 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 663.0) internal successors, (7293), 11 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:52,318 INFO L175 Difference]: Start difference. First operand has 140 places, 90 transitions, 591 flow. Second operand 10 states and 2304 transitions. [2023-08-25 19:42:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 160 transitions, 1207 flow [2023-08-25 19:42:52,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 160 transitions, 1162 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-25 19:42:52,334 INFO L231 Difference]: Finished difference. Result has 142 places, 89 transitions, 560 flow [2023-08-25 19:42:52,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=142, PETRI_TRANSITIONS=89} [2023-08-25 19:42:52,334 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 8 predicate places. [2023-08-25 19:42:52,334 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 89 transitions, 560 flow [2023-08-25 19:42:52,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:52,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:52,338 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:52,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-25 19:42:52,546 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:52,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash -355853445, now seen corresponding path program 47 times [2023-08-25 19:42:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:52,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785883307] [2023-08-25 19:42:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:52,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:53,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:53,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785883307] [2023-08-25 19:42:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785883307] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:53,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827165427] [2023-08-25 19:42:53,964 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:42:53,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:53,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:53,964 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:53,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-25 19:42:54,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:42:54,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:54,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 19:42:54,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:54,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:42:54,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:42:54,668 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:54,668 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:42:54,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:42:54,797 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6734 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_6734) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* c_~i~0 4))) (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4)))))) is different from false [2023-08-25 19:42:54,819 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:54,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-08-25 19:42:54,832 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:54,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-08-25 19:42:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827165427] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:54,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:42:54,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 10] total 30 [2023-08-25 19:42:54,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872920469] [2023-08-25 19:42:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:42:54,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:42:54,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=831, Unknown=1, NotChecked=58, Total=992 [2023-08-25 19:42:54,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:42:54,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 89 transitions, 560 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:54,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:54,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:42:54,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:55,815 INFO L124 PetriNetUnfolderBase]: 1871/3988 cut-off events. [2023-08-25 19:42:55,815 INFO L125 PetriNetUnfolderBase]: For 7210/7317 co-relation queries the response was YES. [2023-08-25 19:42:55,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13102 conditions, 3988 events. 1871/3988 cut-off events. For 7210/7317 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 26504 event pairs, 972 based on Foata normal form. 2/3963 useless extension candidates. Maximal degree in co-relation 13060. Up to 1604 conditions per place. [2023-08-25 19:42:55,838 INFO L140 encePairwiseOnDemand]: 644/663 looper letters, 92 selfloop transitions, 19 changer transitions 78/197 dead transitions. [2023-08-25 19:42:55,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 197 transitions, 1428 flow [2023-08-25 19:42:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 19:42:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 19:42:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2991 transitions. [2023-08-25 19:42:55,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3470240167072746 [2023-08-25 19:42:55,841 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2991 transitions. [2023-08-25 19:42:55,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2991 transitions. [2023-08-25 19:42:55,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:55,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2991 transitions. [2023-08-25 19:42:55,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 230.07692307692307) internal successors, (2991), 13 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:55,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:55,846 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:55,846 INFO L175 Difference]: Start difference. First operand has 142 places, 89 transitions, 560 flow. Second operand 13 states and 2991 transitions. [2023-08-25 19:42:55,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 197 transitions, 1428 flow [2023-08-25 19:42:55,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 197 transitions, 1364 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-08-25 19:42:55,860 INFO L231 Difference]: Finished difference. Result has 143 places, 95 transitions, 609 flow [2023-08-25 19:42:55,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=609, PETRI_PLACES=143, PETRI_TRANSITIONS=95} [2023-08-25 19:42:55,860 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 9 predicate places. [2023-08-25 19:42:55,861 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 95 transitions, 609 flow [2023-08-25 19:42:55,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:55,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:55,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:55,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:56,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:56,068 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:56,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:56,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1100824967, now seen corresponding path program 48 times [2023-08-25 19:42:56,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:56,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311165667] [2023-08-25 19:42:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:56,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:42:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:42:57,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:42:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311165667] [2023-08-25 19:42:57,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311165667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:42:57,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103333160] [2023-08-25 19:42:57,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:42:57,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:42:57,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:42:57,866 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:42:57,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-25 19:42:58,281 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-25 19:42:58,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:42:58,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 19:42:58,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:42:58,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:42:58,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:42:58,582 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:42:58,582 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:42:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:42:58,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:42:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103333160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:42:58,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:42:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 22 [2023-08-25 19:42:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700761579] [2023-08-25 19:42:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:42:58,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:42:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:42:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:42:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:42:58,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:42:58,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 95 transitions, 609 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:58,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:42:58,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:42:58,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:42:59,318 INFO L124 PetriNetUnfolderBase]: 1563/3364 cut-off events. [2023-08-25 19:42:59,319 INFO L125 PetriNetUnfolderBase]: For 6317/6440 co-relation queries the response was YES. [2023-08-25 19:42:59,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11690 conditions, 3364 events. 1563/3364 cut-off events. For 6317/6440 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21528 event pairs, 1063 based on Foata normal form. 2/3347 useless extension candidates. Maximal degree in co-relation 11651. Up to 1597 conditions per place. [2023-08-25 19:42:59,338 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 99 selfloop transitions, 9 changer transitions 34/150 dead transitions. [2023-08-25 19:42:59,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 150 transitions, 1132 flow [2023-08-25 19:42:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:42:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:42:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2079 transitions. [2023-08-25 19:42:59,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34841628959276016 [2023-08-25 19:42:59,340 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2079 transitions. [2023-08-25 19:42:59,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2079 transitions. [2023-08-25 19:42:59,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:42:59,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2079 transitions. [2023-08-25 19:42:59,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:59,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:59,344 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:59,344 INFO L175 Difference]: Start difference. First operand has 143 places, 95 transitions, 609 flow. Second operand 9 states and 2079 transitions. [2023-08-25 19:42:59,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 150 transitions, 1132 flow [2023-08-25 19:42:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 150 transitions, 1087 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-25 19:42:59,372 INFO L231 Difference]: Finished difference. Result has 136 places, 93 transitions, 578 flow [2023-08-25 19:42:59,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=136, PETRI_TRANSITIONS=93} [2023-08-25 19:42:59,372 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 2 predicate places. [2023-08-25 19:42:59,372 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 93 transitions, 578 flow [2023-08-25 19:42:59,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:42:59,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:42:59,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:42:59,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-25 19:42:59,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-25 19:42:59,577 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:42:59,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:42:59,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1524081003, now seen corresponding path program 49 times [2023-08-25 19:42:59,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:42:59,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658504846] [2023-08-25 19:42:59,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:42:59,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:42:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:43:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:43:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658504846] [2023-08-25 19:43:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658504846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:43:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135305215] [2023-08-25 19:43:00,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:43:00,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:00,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:43:00,934 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:43:00,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-25 19:43:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:01,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 19:43:01,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:43:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:01,539 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:01,654 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:43:01,654 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:43:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:43:01,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:43:01,785 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7048 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_7048) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4))) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2023-08-25 19:43:01,810 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:43:01,810 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 114 [2023-08-25 19:43:01,824 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:43:01,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2023-08-25 19:43:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:43:02,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135305215] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:43:02,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:43:02,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 10] total 30 [2023-08-25 19:43:02,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829380483] [2023-08-25 19:43:02,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:43:02,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:43:02,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:43:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:43:02,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=840, Unknown=1, NotChecked=58, Total=992 [2023-08-25 19:43:02,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 663 [2023-08-25 19:43:02,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 93 transitions, 578 flow. Second operand has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:43:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 663 [2023-08-25 19:43:02,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:43:02,807 INFO L124 PetriNetUnfolderBase]: 1493/3190 cut-off events. [2023-08-25 19:43:02,807 INFO L125 PetriNetUnfolderBase]: For 5983/6068 co-relation queries the response was YES. [2023-08-25 19:43:02,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11042 conditions, 3190 events. 1493/3190 cut-off events. For 5983/6068 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20320 event pairs, 904 based on Foata normal form. 2/3170 useless extension candidates. Maximal degree in co-relation 11005. Up to 1300 conditions per place. [2023-08-25 19:43:02,818 INFO L140 encePairwiseOnDemand]: 646/663 looper letters, 51 selfloop transitions, 5 changer transitions 98/162 dead transitions. [2023-08-25 19:43:02,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 162 transitions, 1197 flow [2023-08-25 19:43:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 19:43:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 19:43:02,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2972 transitions. [2023-08-25 19:43:02,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34481958463858914 [2023-08-25 19:43:02,820 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2972 transitions. [2023-08-25 19:43:02,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2972 transitions. [2023-08-25 19:43:02,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:43:02,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2972 transitions. [2023-08-25 19:43:02,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 228.6153846153846) internal successors, (2972), 13 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:02,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:02,826 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:02,826 INFO L175 Difference]: Start difference. First operand has 136 places, 93 transitions, 578 flow. Second operand 13 states and 2972 transitions. [2023-08-25 19:43:02,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 162 transitions, 1197 flow [2023-08-25 19:43:02,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 162 transitions, 1167 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-08-25 19:43:02,834 INFO L231 Difference]: Finished difference. Result has 138 places, 62 transitions, 328 flow [2023-08-25 19:43:02,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=328, PETRI_PLACES=138, PETRI_TRANSITIONS=62} [2023-08-25 19:43:02,835 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, 4 predicate places. [2023-08-25 19:43:02,835 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 62 transitions, 328 flow [2023-08-25 19:43:02,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 222.8181818181818) internal successors, (2451), 11 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:02,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:43:02,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:43:02,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-25 19:43:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:03,041 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:43:03,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:43:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 558638929, now seen corresponding path program 50 times [2023-08-25 19:43:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:43:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107112810] [2023-08-25 19:43:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:43:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:43:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:43:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:43:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107112810] [2023-08-25 19:43:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107112810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:43:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443519617] [2023-08-25 19:43:03,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:43:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:43:03,942 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:43:03,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-25 19:43:04,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 19:43:04,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:43:04,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 19:43:04,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:43:04,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:04,499 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 42 treesize of output 38 [2023-08-25 19:43:04,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:04,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:04,630 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:04,770 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:43:04,770 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:43:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:43:04,782 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:43:04,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443519617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:43:04,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:43:04,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21 [2023-08-25 19:43:04,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984616400] [2023-08-25 19:43:04,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:43:04,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 19:43:04,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:43:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 19:43:04,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2023-08-25 19:43:04,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 663 [2023-08-25 19:43:04,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 62 transitions, 328 flow. Second operand has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:04,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:43:04,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 663 [2023-08-25 19:43:04,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:43:05,661 INFO L124 PetriNetUnfolderBase]: 1580/2782 cut-off events. [2023-08-25 19:43:05,661 INFO L125 PetriNetUnfolderBase]: For 6285/6321 co-relation queries the response was YES. [2023-08-25 19:43:05,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 2782 events. 1580/2782 cut-off events. For 6285/6321 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14990 event pairs, 261 based on Foata normal form. 4/2766 useless extension candidates. Maximal degree in co-relation 9509. Up to 864 conditions per place. [2023-08-25 19:43:05,673 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 82 selfloop transitions, 9 changer transitions 97/192 dead transitions. [2023-08-25 19:43:05,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 192 transitions, 1205 flow [2023-08-25 19:43:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 19:43:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 19:43:05,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2898 transitions. [2023-08-25 19:43:05,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3362339018447616 [2023-08-25 19:43:05,676 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2898 transitions. [2023-08-25 19:43:05,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2898 transitions. [2023-08-25 19:43:05,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:43:05,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2898 transitions. [2023-08-25 19:43:05,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 222.92307692307693) internal successors, (2898), 13 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:05,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:05,681 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 663.0) internal successors, (9282), 14 states have internal predecessors, (9282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:05,681 INFO L175 Difference]: Start difference. First operand has 138 places, 62 transitions, 328 flow. Second operand 13 states and 2898 transitions. [2023-08-25 19:43:05,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 192 transitions, 1205 flow [2023-08-25 19:43:05,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 192 transitions, 1022 flow, removed 40 selfloop flow, removed 30 redundant places. [2023-08-25 19:43:05,691 INFO L231 Difference]: Finished difference. Result has 104 places, 62 transitions, 260 flow [2023-08-25 19:43:05,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=260, PETRI_PLACES=104, PETRI_TRANSITIONS=62} [2023-08-25 19:43:05,691 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -30 predicate places. [2023-08-25 19:43:05,691 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 62 transitions, 260 flow [2023-08-25 19:43:05,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:05,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:43:05,692 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:43:05,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-25 19:43:05,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:05,897 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:43:05,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:43:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1595859897, now seen corresponding path program 51 times [2023-08-25 19:43:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:43:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398519859] [2023-08-25 19:43:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:43:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:43:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:43:06,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:43:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398519859] [2023-08-25 19:43:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398519859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:43:06,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632448202] [2023-08-25 19:43:06,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:43:06,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:43:06,652 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:43:06,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-25 19:43:07,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 19:43:07,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:43:07,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 19:43:07,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:43:07,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:07,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:07,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:07,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:07,486 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:43:07,486 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:43:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:43:07,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:43:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632448202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:43:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:43:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 20 [2023-08-25 19:43:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235765544] [2023-08-25 19:43:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:43:07,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 19:43:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:43:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 19:43:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-08-25 19:43:07,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 663 [2023-08-25 19:43:07,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 62 transitions, 260 flow. Second operand has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:07,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:43:07,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 663 [2023-08-25 19:43:07,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:43:08,344 INFO L124 PetriNetUnfolderBase]: 1474/2628 cut-off events. [2023-08-25 19:43:08,344 INFO L125 PetriNetUnfolderBase]: For 4728/4764 co-relation queries the response was YES. [2023-08-25 19:43:08,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8507 conditions, 2628 events. 1474/2628 cut-off events. For 4728/4764 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13958 event pairs, 231 based on Foata normal form. 4/2612 useless extension candidates. Maximal degree in co-relation 8483. Up to 688 conditions per place. [2023-08-25 19:43:08,354 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 96 selfloop transitions, 8 changer transitions 107/215 dead transitions. [2023-08-25 19:43:08,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 215 transitions, 1166 flow [2023-08-25 19:43:08,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 19:43:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 19:43:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3130 transitions. [2023-08-25 19:43:08,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3372118078000431 [2023-08-25 19:43:08,359 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3130 transitions. [2023-08-25 19:43:08,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3130 transitions. [2023-08-25 19:43:08,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:43:08,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3130 transitions. [2023-08-25 19:43:08,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 223.57142857142858) internal successors, (3130), 14 states have internal predecessors, (3130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:08,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 663.0) internal successors, (9945), 15 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:08,365 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 663.0) internal successors, (9945), 15 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:08,365 INFO L175 Difference]: Start difference. First operand has 104 places, 62 transitions, 260 flow. Second operand 14 states and 3130 transitions. [2023-08-25 19:43:08,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 215 transitions, 1166 flow [2023-08-25 19:43:08,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 215 transitions, 1126 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-25 19:43:08,376 INFO L231 Difference]: Finished difference. Result has 103 places, 58 transitions, 228 flow [2023-08-25 19:43:08,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=228, PETRI_PLACES=103, PETRI_TRANSITIONS=58} [2023-08-25 19:43:08,376 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -31 predicate places. [2023-08-25 19:43:08,376 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 58 transitions, 228 flow [2023-08-25 19:43:08,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:08,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:43:08,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:43:08,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-25 19:43:08,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-08-25 19:43:08,584 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 126 more)] === [2023-08-25 19:43:08,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:43:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1456042681, now seen corresponding path program 52 times [2023-08-25 19:43:08,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:43:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905129993] [2023-08-25 19:43:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:43:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:43:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:43:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:43:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:43:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905129993] [2023-08-25 19:43:10,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905129993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:43:10,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047030207] [2023-08-25 19:43:10,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:43:10,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:43:10,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:43:10,132 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 19:43:10,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-25 19:43:11,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:43:11,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:43:11,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 19:43:11,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:43:11,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:11,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:11,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:43:11,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 19:43:11,295 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:43:11,295 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-08-25 19:43:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:43:11,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 19:43:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047030207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:43:11,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 19:43:11,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 22 [2023-08-25 19:43:11,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920986874] [2023-08-25 19:43:11,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:43:11,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 19:43:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:43:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 19:43:11,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:43:11,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 663 [2023-08-25 19:43:11,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 58 transitions, 228 flow. Second operand has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:11,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:43:11,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 663 [2023-08-25 19:43:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:43:11,784 INFO L124 PetriNetUnfolderBase]: 500/1000 cut-off events. [2023-08-25 19:43:11,785 INFO L125 PetriNetUnfolderBase]: For 967/978 co-relation queries the response was YES. [2023-08-25 19:43:11,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2979 conditions, 1000 events. 500/1000 cut-off events. For 967/978 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4531 event pairs, 159 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 2957. Up to 343 conditions per place. [2023-08-25 19:43:11,787 INFO L140 encePairwiseOnDemand]: 654/663 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2023-08-25 19:43:11,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 107 transitions, 566 flow [2023-08-25 19:43:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:43:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:43:11,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1984 transitions. [2023-08-25 19:43:11,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33249539131892075 [2023-08-25 19:43:11,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1984 transitions. [2023-08-25 19:43:11,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1984 transitions. [2023-08-25 19:43:11,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:43:11,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1984 transitions. [2023-08-25 19:43:11,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 220.44444444444446) internal successors, (1984), 9 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:11,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:11,792 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 663.0) internal successors, (6630), 10 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:11,793 INFO L175 Difference]: Start difference. First operand has 103 places, 58 transitions, 228 flow. Second operand 9 states and 1984 transitions. [2023-08-25 19:43:11,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 107 transitions, 566 flow [2023-08-25 19:43:11,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 107 transitions, 535 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-08-25 19:43:11,795 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-25 19:43:11,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=663, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-25 19:43:11,796 INFO L281 CegarLoopForPetriNet]: 134 programPoint places, -44 predicate places. [2023-08-25 19:43:11,796 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-25 19:43:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 213.83333333333334) internal successors, (2566), 12 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (129 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (128 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (127 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (126 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (125 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONDATA_RACE (124 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONDATA_RACE (123 of 130 remaining) [2023-08-25 19:43:11,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONDATA_RACE (122 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONDATA_RACE (121 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONDATA_RACE (120 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONDATA_RACE (119 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONDATA_RACE (118 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONDATA_RACE (117 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONDATA_RACE (116 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONDATA_RACE (115 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONDATA_RACE (114 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONDATA_RACE (113 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONDATA_RACE (112 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err18ASSERT_VIOLATIONDATA_RACE (111 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err19ASSERT_VIOLATIONDATA_RACE (110 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (109 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (108 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (107 of 130 remaining) [2023-08-25 19:43:11,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (106 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (105 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (104 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (103 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (102 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONDATA_RACE (101 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONDATA_RACE (100 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONDATA_RACE (99 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONDATA_RACE (98 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONDATA_RACE (97 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONDATA_RACE (96 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONDATA_RACE (95 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONDATA_RACE (94 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONDATA_RACE (93 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONDATA_RACE (92 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err18ASSERT_VIOLATIONDATA_RACE (91 of 130 remaining) [2023-08-25 19:43:11,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err19ASSERT_VIOLATIONDATA_RACE (90 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (89 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (88 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (87 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (86 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (85 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONDATA_RACE (84 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONDATA_RACE (83 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONDATA_RACE (82 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONDATA_RACE (81 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONDATA_RACE (80 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONDATA_RACE (79 of 130 remaining) [2023-08-25 19:43:11,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (78 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (77 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (76 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (75 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (74 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (73 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (72 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (71 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (70 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (69 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (68 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (67 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (66 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (65 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (64 of 130 remaining) [2023-08-25 19:43:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (63 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (62 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (61 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (60 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (59 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (58 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (57 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONDATA_RACE (56 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE (55 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONASSERT (54 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (53 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (52 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (51 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (50 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (49 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (48 of 130 remaining) [2023-08-25 19:43:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (47 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (46 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONDATA_RACE (45 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONDATA_RACE (44 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONDATA_RACE (43 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONDATA_RACE (42 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONDATA_RACE (41 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONDATA_RACE (40 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONDATA_RACE (39 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONDATA_RACE (38 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONDATA_RACE (37 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONDATA_RACE (36 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONDATA_RACE (35 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONDATA_RACE (34 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONDATA_RACE (33 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err18ASSERT_VIOLATIONDATA_RACE (32 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err19ASSERT_VIOLATIONDATA_RACE (31 of 130 remaining) [2023-08-25 19:43:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (30 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (29 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (28 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (27 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (26 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (25 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONDATA_RACE (24 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONDATA_RACE (23 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONDATA_RACE (22 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONDATA_RACE (21 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONDATA_RACE (20 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONDATA_RACE (19 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONDATA_RACE (18 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONDATA_RACE (17 of 130 remaining) [2023-08-25 19:43:11,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONDATA_RACE (16 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONDATA_RACE (15 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONDATA_RACE (14 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONDATA_RACE (13 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err18ASSERT_VIOLATIONDATA_RACE (12 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err19ASSERT_VIOLATIONDATA_RACE (11 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (10 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (9 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (8 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (7 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (6 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONDATA_RACE (5 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONDATA_RACE (4 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONDATA_RACE (3 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONDATA_RACE (2 of 130 remaining) [2023-08-25 19:43:11,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONDATA_RACE (1 of 130 remaining) [2023-08-25 19:43:11,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONDATA_RACE (0 of 130 remaining) [2023-08-25 19:43:11,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-25 19:43:12,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-08-25 19:43:12,015 INFO L445 BasicCegarLoop]: Path program histogram: [52, 1, 1, 1, 1, 1] [2023-08-25 19:43:12,021 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 19:43:12,021 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 19:43:12,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:43:12 BasicIcfg [2023-08-25 19:43:12,023 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 19:43:12,024 INFO L158 Benchmark]: Toolchain (without parser) took 265059.66ms. Allocated memory was 379.6MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 336.7MB in the beginning and 5.5GB in the end (delta: -5.2GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-25 19:43:12,024 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory is still 357.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 19:43:12,024 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.54ms. Allocated memory is still 379.6MB. Free memory was 335.7MB in the beginning and 323.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 19:43:12,024 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.86ms. Allocated memory is still 379.6MB. Free memory was 323.1MB in the beginning and 318.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 19:43:12,024 INFO L158 Benchmark]: Boogie Preprocessor took 27.68ms. Allocated memory is still 379.6MB. Free memory was 318.9MB in the beginning and 316.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 19:43:12,024 INFO L158 Benchmark]: RCFGBuilder took 914.92ms. Allocated memory is still 379.6MB. Free memory was 316.8MB in the beginning and 234.0MB in the end (delta: 82.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.0GB. [2023-08-25 19:43:12,024 INFO L158 Benchmark]: TraceAbstraction took 263878.34ms. Allocated memory was 379.6MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 234.0MB in the beginning and 5.5GB in the end (delta: -5.3GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-08-25 19:43:12,025 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory is still 357.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 200.54ms. Allocated memory is still 379.6MB. Free memory was 335.7MB in the beginning and 323.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.86ms. Allocated memory is still 379.6MB. Free memory was 323.1MB in the beginning and 318.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.68ms. Allocated memory is still 379.6MB. Free memory was 318.9MB in the beginning and 316.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 914.92ms. Allocated memory is still 379.6MB. Free memory was 316.8MB in the beginning and 234.0MB in the end (delta: 82.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.0GB. * TraceAbstraction took 263878.34ms. Allocated memory was 379.6MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 234.0MB in the beginning and 5.5GB in the end (delta: -5.3GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 336 PlacesBefore, 134 PlacesAfterwards, 334 TransitionsBefore, 125 TransitionsAfterwards, 7840 CoEnabledTransitionPairs, 9 FixpointIterations, 260 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 0 ConcurrentYvCompositions, 7 ChoiceCompositions, 315 TotalNumberOfCompositions, 97239 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24191, independent: 22569, independent conditional: 0, independent unconditional: 22569, dependent: 1622, dependent conditional: 0, dependent unconditional: 1622, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2839, independent: 2730, independent conditional: 0, independent unconditional: 2730, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24191, independent: 19839, independent conditional: 0, independent unconditional: 19839, dependent: 1513, dependent conditional: 0, dependent unconditional: 1513, unknown: 2839, unknown conditional: 0, unknown unconditional: 2839] , Statistics on independence cache: Total cache size (in pairs): 1296, Positive cache size: 1195, Positive conditional cache size: 0, Positive unconditional cache size: 1195, Negative cache size: 101, Negative conditional cache size: 0, Negative unconditional cache size: 101, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 49]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 55]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 55]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 64]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 64]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 64]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 70]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 70]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 70]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 70]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 73]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 73]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 73]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 76]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 84]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 87]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 87]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 90]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 90]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 93]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 96]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 99]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 99]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 99]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 102]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 102]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 105]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 105]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 105]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 105]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 108]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 108]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 108]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 111]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 119]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 119]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 119]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 119]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 122]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 122]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 122]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 125]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 125]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 125]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 125]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 135]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 136]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 137]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 138]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 139]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 140]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 141]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 142]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 142]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 172]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 145]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 145]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 146]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 146]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 146]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 148]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 149]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 150]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 151]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 156]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 157]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 158]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 160]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 160]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 427 locations, 130 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: 263.8s, OverallIterations: 57, TraceHistogramMax: 2, PathProgramHistogramMax: 52, EmptinessCheckTime: 0.0s, AutomataDifference: 163.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 10657 SdHoareTripleChecker+Valid, 21.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10657 mSDsluCounter, 2968 SdHoareTripleChecker+Invalid, 18.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3904 IncrementalHoareTripleChecker+Unchecked, 2836 mSDsCounter, 493 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37127 IncrementalHoareTripleChecker+Invalid, 41527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 493 mSolverCounterUnsat, 132 mSDtfsCounter, 37127 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3839 GetRequests, 2551 SyntacticMatches, 7 SemanticMatches, 1281 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 5694 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2266occurred in iteration=19, InterpolantAutomatonStates: 621, 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: 1.1s SsaConstructionTime, 9.9s SatisfiabilityAnalysisTime, 61.8s InterpolantComputationTime, 4972 NumberOfCodeBlocks, 4895 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 5569 ConstructedInterpolants, 508 QuantifiedInterpolants, 85033 SizeOfPredicates, 498 NumberOfNonLiveVariables, 19326 ConjunctsInSsa, 1041 ConjunctsInUnsatCore, 115 InterpolantComputations, 55 PerfectInterpolantSequences, 137/281 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 - AllSpecificationsHoldResult: All specifications hold 76 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 19:43:12,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...