/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.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:55:29,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:55:29,353 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 [2023-08-27 02:55:29,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:55:29,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:55:29,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:55:29,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:55:29,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:55:29,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:55:29,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:55:29,379 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:55:29,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:55:29,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:55:29,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:55:29,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:55:29,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:55:29,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:55:29,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:55:29,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:55:29,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:55:29,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:55:29,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:55:29,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:55:29,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:55:29,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:55:29,383 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:55:29,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:55:29,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:55:29,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:55:29,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:55:29,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:55:29,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:55:29,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:55:29,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:55:29,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:55:29,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:55:29,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:55:29,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:55:29,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:55:29,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:55:29,700 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:55:29,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-27 02:55:30,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:55:31,198 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:55:31,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-08-27 02:55:31,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda4a653a/f602d41bf49145f5bb8d83dbba07ffb9/FLAG1bfde066d [2023-08-27 02:55:31,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda4a653a/f602d41bf49145f5bb8d83dbba07ffb9 [2023-08-27 02:55:31,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:55:31,227 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:55:31,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:55:31,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:55:31,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:55:31,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282992ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31, skipping insertion in model container [2023-08-27 02:55:31,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,279 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:55:31,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:55:31,627 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:55:31,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:55:31,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:55:31,685 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 02:55:31,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:55:31,782 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:55:31,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31 WrapperNode [2023-08-27 02:55:31,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:55:31,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:55:31,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:55:31,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:55:31,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,847 INFO L138 Inliner]: procedures = 277, calls = 40, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 170 [2023-08-27 02:55:31,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:55:31,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:55:31,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:55:31,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:55:31,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:55:31,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:55:31,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:55:31,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:55:31,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (1/1) ... [2023-08-27 02:55:31,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:55:31,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:31,907 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) [2023-08-27 02:55:31,948 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 [2023-08-27 02:55:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:55:31,970 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:55:31,970 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:55:31,970 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:55:31,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:55:31,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:55:31,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:55:31,973 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:55:32,087 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:55:32,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:55:32,408 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:55:32,420 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:55:32,420 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:55:32,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:55:32 BoogieIcfgContainer [2023-08-27 02:55:32,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:55:32,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:55:32,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:55:32,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:55:32,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:55:31" (1/3) ... [2023-08-27 02:55:32,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae1364f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:55:32, skipping insertion in model container [2023-08-27 02:55:32,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:55:31" (2/3) ... [2023-08-27 02:55:32,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae1364f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:55:32, skipping insertion in model container [2023-08-27 02:55:32,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:55:32" (3/3) ... [2023-08-27 02:55:32,431 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-08-27 02:55:32,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:55:32,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 02:55:32,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:55:32,529 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:55:32,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 182 transitions, 380 flow [2023-08-27 02:55:32,635 INFO L124 PetriNetUnfolderBase]: 12/180 cut-off events. [2023-08-27 02:55:32,636 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:55:32,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 180 events. 12/180 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 503 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 02:55:32,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 182 transitions, 380 flow [2023-08-27 02:55:32,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 171 transitions, 351 flow [2023-08-27 02:55:32,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:55:32,660 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 171 transitions, 351 flow [2023-08-27 02:55:32,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 171 transitions, 351 flow [2023-08-27 02:55:32,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 171 transitions, 351 flow [2023-08-27 02:55:32,699 INFO L124 PetriNetUnfolderBase]: 12/171 cut-off events. [2023-08-27 02:55:32,699 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:55:32,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 171 events. 12/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 433 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 02:55:32,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 10550 [2023-08-27 02:55:36,365 INFO L134 LiptonReduction]: Checked pairs total: 14717 [2023-08-27 02:55:36,366 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-27 02:55:36,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:55:36,393 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;@601714bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:55:36,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 02:55:36,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:55:36,403 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-27 02:55:36,403 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:55:36,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:36,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:55:36,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:36,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:36,410 INFO L85 PathProgramCache]: Analyzing trace with hash 731787429, now seen corresponding path program 1 times [2023-08-27 02:55:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:36,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341642358] [2023-08-27 02:55:36,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:36,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341642358] [2023-08-27 02:55:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341642358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:36,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130522574] [2023-08-27 02:55:36,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:36,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:36,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:36,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 351 [2023-08-27 02:55:36,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:36,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:36,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 351 [2023-08-27 02:55:36,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:37,087 INFO L124 PetriNetUnfolderBase]: 1600/2589 cut-off events. [2023-08-27 02:55:37,087 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-08-27 02:55:37,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2589 events. 1600/2589 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12422 event pairs, 464 based on Foata normal form. 0/1716 useless extension candidates. Maximal degree in co-relation 4920. Up to 1581 conditions per place. [2023-08-27 02:55:37,111 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-27 02:55:37,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 309 flow [2023-08-27 02:55:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:37,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-27 02:55:37,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2023-08-27 02:55:37,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-27 02:55:37,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-27 02:55:37,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:37,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-27 02:55:37,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,150 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 93 flow. Second operand 3 states and 555 transitions. [2023-08-27 02:55:37,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 309 flow [2023-08-27 02:55:37,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:55:37,158 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 126 flow [2023-08-27 02:55:37,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-27 02:55:37,163 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-27 02:55:37,164 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 126 flow [2023-08-27 02:55:37,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:37,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:37,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:55:37,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:37,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:37,166 INFO L85 PathProgramCache]: Analyzing trace with hash 236537514, now seen corresponding path program 1 times [2023-08-27 02:55:37,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:37,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096272868] [2023-08-27 02:55:37,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:37,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:37,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096272868] [2023-08-27 02:55:37,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096272868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:37,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:37,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237989754] [2023-08-27 02:55:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:37,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:37,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 351 [2023-08-27 02:55:37,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:37,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 351 [2023-08-27 02:55:37,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:37,519 INFO L124 PetriNetUnfolderBase]: 1716/2801 cut-off events. [2023-08-27 02:55:37,520 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-08-27 02:55:37,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6080 conditions, 2801 events. 1716/2801 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13791 event pairs, 751 based on Foata normal form. 0/2034 useless extension candidates. Maximal degree in co-relation 5741. Up to 2357 conditions per place. [2023-08-27 02:55:37,536 INFO L140 encePairwiseOnDemand]: 348/351 looper letters, 63 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-27 02:55:37,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 305 flow [2023-08-27 02:55:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:37,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:37,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-08-27 02:55:37,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2023-08-27 02:55:37,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-08-27 02:55:37,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-08-27 02:55:37,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:37,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-08-27 02:55:37,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,543 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 126 flow. Second operand 3 states and 558 transitions. [2023-08-27 02:55:37,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 305 flow [2023-08-27 02:55:37,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:55:37,547 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 130 flow [2023-08-27 02:55:37,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-27 02:55:37,548 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-27 02:55:37,548 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 130 flow [2023-08-27 02:55:37,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:37,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:37,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:55:37,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:37,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash 236506715, now seen corresponding path program 1 times [2023-08-27 02:55:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:37,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349318484] [2023-08-27 02:55:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:37,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349318484] [2023-08-27 02:55:37,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349318484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:37,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637916468] [2023-08-27 02:55:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:37,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:37,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:37,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:37,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:37,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:37,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:37,968 INFO L124 PetriNetUnfolderBase]: 2514/4177 cut-off events. [2023-08-27 02:55:37,969 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-27 02:55:37,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9140 conditions, 4177 events. 2514/4177 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23108 event pairs, 1358 based on Foata normal form. 0/3347 useless extension candidates. Maximal degree in co-relation 8764. Up to 2778 conditions per place. [2023-08-27 02:55:37,993 INFO L140 encePairwiseOnDemand]: 346/351 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-27 02:55:37,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 386 flow [2023-08-27 02:55:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-27 02:55:37,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375118708452041 [2023-08-27 02:55:37,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-27 02:55:37,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-27 02:55:37,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:37,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-27 02:55:37,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:37,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,000 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 130 flow. Second operand 3 states and 566 transitions. [2023-08-27 02:55:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 386 flow [2023-08-27 02:55:38,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:38,005 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 144 flow [2023-08-27 02:55:38,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-08-27 02:55:38,006 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-27 02:55:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 144 flow [2023-08-27 02:55:38,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:38,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:55:38,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:38,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2104264202, now seen corresponding path program 1 times [2023-08-27 02:55:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125695697] [2023-08-27 02:55:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:38,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125695697] [2023-08-27 02:55:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125695697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:38,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:38,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:38,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34711769] [2023-08-27 02:55:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:38,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:38,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:38,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:38,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:38,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:38,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:38,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:38,478 INFO L124 PetriNetUnfolderBase]: 2712/4425 cut-off events. [2023-08-27 02:55:38,478 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-27 02:55:38,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10489 conditions, 4425 events. 2712/4425 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24116 event pairs, 2085 based on Foata normal form. 114/3749 useless extension candidates. Maximal degree in co-relation 10098. Up to 4073 conditions per place. [2023-08-27 02:55:38,503 INFO L140 encePairwiseOnDemand]: 348/351 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 02:55:38,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 368 flow [2023-08-27 02:55:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-08-27 02:55:38,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251661918328585 [2023-08-27 02:55:38,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-08-27 02:55:38,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-08-27 02:55:38,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:38,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-08-27 02:55:38,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,510 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 144 flow. Second operand 3 states and 553 transitions. [2023-08-27 02:55:38,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 368 flow [2023-08-27 02:55:38,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:38,514 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 162 flow [2023-08-27 02:55:38,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-27 02:55:38,515 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-27 02:55:38,515 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 162 flow [2023-08-27 02:55:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:38,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:55:38,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:38,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 807682009, now seen corresponding path program 1 times [2023-08-27 02:55:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785148279] [2023-08-27 02:55:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785148279] [2023-08-27 02:55:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785148279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586252272] [2023-08-27 02:55:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:38,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:38,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:38,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:38,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:38,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:38,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:38,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:39,007 INFO L124 PetriNetUnfolderBase]: 2802/4545 cut-off events. [2023-08-27 02:55:39,008 INFO L125 PetriNetUnfolderBase]: For 1126/1126 co-relation queries the response was YES. [2023-08-27 02:55:39,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 4545 events. 2802/4545 cut-off events. For 1126/1126 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26373 event pairs, 1307 based on Foata normal form. 0/3753 useless extension candidates. Maximal degree in co-relation 8704. Up to 3967 conditions per place. [2023-08-27 02:55:39,042 INFO L140 encePairwiseOnDemand]: 346/351 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-27 02:55:39,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 413 flow [2023-08-27 02:55:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:39,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-27 02:55:39,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533713200379867 [2023-08-27 02:55:39,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-27 02:55:39,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-27 02:55:39,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:39,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-27 02:55:39,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,051 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 162 flow. Second operand 3 states and 562 transitions. [2023-08-27 02:55:39,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 413 flow [2023-08-27 02:55:39,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:39,058 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 174 flow [2023-08-27 02:55:39,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-27 02:55:39,060 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-08-27 02:55:39,060 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 174 flow [2023-08-27 02:55:39,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:39,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:39,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:55:39,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:39,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1570101446, now seen corresponding path program 1 times [2023-08-27 02:55:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:39,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500697891] [2023-08-27 02:55:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:39,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:55:39,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:39,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500697891] [2023-08-27 02:55:39,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500697891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:39,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:39,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470775773] [2023-08-27 02:55:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:39,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:39,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:39,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:39,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:39,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:39,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:39,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:39,424 INFO L124 PetriNetUnfolderBase]: 2519/4206 cut-off events. [2023-08-27 02:55:39,424 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-27 02:55:39,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 4206 events. 2519/4206 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23802 event pairs, 343 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 10102. Up to 3400 conditions per place. [2023-08-27 02:55:39,449 INFO L140 encePairwiseOnDemand]: 347/351 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 02:55:39,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 403 flow [2023-08-27 02:55:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-27 02:55:39,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5223171889838556 [2023-08-27 02:55:39,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-27 02:55:39,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-27 02:55:39,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:39,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-27 02:55:39,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,456 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 174 flow. Second operand 3 states and 550 transitions. [2023-08-27 02:55:39,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 403 flow [2023-08-27 02:55:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:39,462 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2023-08-27 02:55:39,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-27 02:55:39,465 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-27 02:55:39,465 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2023-08-27 02:55:39,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:39,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:39,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:55:39,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:39,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1570101474, now seen corresponding path program 1 times [2023-08-27 02:55:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:39,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675997367] [2023-08-27 02:55:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:39,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675997367] [2023-08-27 02:55:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675997367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:39,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540777344] [2023-08-27 02:55:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:39,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:39,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:39,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:39,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:39,835 INFO L124 PetriNetUnfolderBase]: 2397/4000 cut-off events. [2023-08-27 02:55:39,835 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-08-27 02:55:39,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 4000 events. 2397/4000 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22381 event pairs, 119 based on Foata normal form. 84/3666 useless extension candidates. Maximal degree in co-relation 9946. Up to 3690 conditions per place. [2023-08-27 02:55:39,856 INFO L140 encePairwiseOnDemand]: 349/351 looper letters, 69 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-08-27 02:55:39,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 407 flow [2023-08-27 02:55:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:39,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:39,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-27 02:55:39,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204178537511871 [2023-08-27 02:55:39,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-27 02:55:39,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-27 02:55:39,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:39,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-27 02:55:39,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,862 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 3 states and 548 transitions. [2023-08-27 02:55:39,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 407 flow [2023-08-27 02:55:39,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:39,867 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 178 flow [2023-08-27 02:55:39,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-27 02:55:39,868 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-27 02:55:39,868 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 178 flow [2023-08-27 02:55:39,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:39,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:39,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:39,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:55:39,869 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:39,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1248618555, now seen corresponding path program 1 times [2023-08-27 02:55:39,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:39,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394216583] [2023-08-27 02:55:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394216583] [2023-08-27 02:55:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394216583] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588691957] [2023-08-27 02:55:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:39,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:39,941 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) [2023-08-27 02:55:39,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:55:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:40,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:55:40,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:40,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:55:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:40,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588691957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:55:40,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:55:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 02:55:40,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032328373] [2023-08-27 02:55:40,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:55:40,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:55:40,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:55:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:55:40,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 02:55:40,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 178 flow. Second operand has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:40,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:40,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 02:55:40,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:41,107 INFO L124 PetriNetUnfolderBase]: 4759/7812 cut-off events. [2023-08-27 02:55:41,107 INFO L125 PetriNetUnfolderBase]: For 3425/3425 co-relation queries the response was YES. [2023-08-27 02:55:41,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20382 conditions, 7812 events. 4759/7812 cut-off events. For 3425/3425 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 45128 event pairs, 788 based on Foata normal form. 112/7186 useless extension candidates. Maximal degree in co-relation 19748. Up to 2453 conditions per place. [2023-08-27 02:55:41,155 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 264 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2023-08-27 02:55:41,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 307 transitions, 1694 flow [2023-08-27 02:55:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 02:55:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 02:55:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2738 transitions. [2023-08-27 02:55:41,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48753561253561256 [2023-08-27 02:55:41,161 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2738 transitions. [2023-08-27 02:55:41,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2738 transitions. [2023-08-27 02:55:41,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:41,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2738 transitions. [2023-08-27 02:55:41,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.125) internal successors, (2738), 16 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:41,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 351.0) internal successors, (5967), 17 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:41,176 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 351.0) internal successors, (5967), 17 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:41,176 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 178 flow. Second operand 16 states and 2738 transitions. [2023-08-27 02:55:41,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 307 transitions, 1694 flow [2023-08-27 02:55:41,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 307 transitions, 1687 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:41,187 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 499 flow [2023-08-27 02:55:41,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=499, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-08-27 02:55:41,188 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-08-27 02:55:41,188 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 499 flow [2023-08-27 02:55:41,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.6) internal successors, (1566), 10 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:41,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:41,189 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:41,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 02:55:41,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:41,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:41,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1624937682, now seen corresponding path program 1 times [2023-08-27 02:55:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643530849] [2023-08-27 02:55:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:55:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643530849] [2023-08-27 02:55:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643530849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:41,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:41,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:55:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185382523] [2023-08-27 02:55:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:55:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:55:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:55:41,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 351 [2023-08-27 02:55:41,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:41,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:41,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 351 [2023-08-27 02:55:41,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:42,307 INFO L124 PetriNetUnfolderBase]: 5651/9290 cut-off events. [2023-08-27 02:55:42,307 INFO L125 PetriNetUnfolderBase]: For 10548/10548 co-relation queries the response was YES. [2023-08-27 02:55:42,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27192 conditions, 9290 events. 5651/9290 cut-off events. For 10548/10548 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 56049 event pairs, 1840 based on Foata normal form. 168/8670 useless extension candidates. Maximal degree in co-relation 26452. Up to 5073 conditions per place. [2023-08-27 02:55:42,355 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 115 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2023-08-27 02:55:42,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 145 transitions, 1052 flow [2023-08-27 02:55:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:55:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:55:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 705 transitions. [2023-08-27 02:55:42,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021367521367521 [2023-08-27 02:55:42,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 705 transitions. [2023-08-27 02:55:42,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 705 transitions. [2023-08-27 02:55:42,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:42,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 705 transitions. [2023-08-27 02:55:42,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 176.25) internal successors, (705), 4 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,362 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 499 flow. Second operand 4 states and 705 transitions. [2023-08-27 02:55:42,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 145 transitions, 1052 flow [2023-08-27 02:55:42,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 998 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:42,424 INFO L231 Difference]: Finished difference. Result has 73 places, 91 transitions, 601 flow [2023-08-27 02:55:42,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=601, PETRI_PLACES=73, PETRI_TRANSITIONS=91} [2023-08-27 02:55:42,424 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-08-27 02:55:42,425 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 91 transitions, 601 flow [2023-08-27 02:55:42,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:42,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:42,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:55:42,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:42,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1568941201, now seen corresponding path program 1 times [2023-08-27 02:55:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706252213] [2023-08-27 02:55:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:42,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:42,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706252213] [2023-08-27 02:55:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706252213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:42,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:42,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:55:42,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275075248] [2023-08-27 02:55:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:42,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:42,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:42,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 351 [2023-08-27 02:55:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 91 transitions, 601 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:42,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 351 [2023-08-27 02:55:42,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:42,736 INFO L124 PetriNetUnfolderBase]: 1713/3112 cut-off events. [2023-08-27 02:55:42,736 INFO L125 PetriNetUnfolderBase]: For 3158/3158 co-relation queries the response was YES. [2023-08-27 02:55:42,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9713 conditions, 3112 events. 1713/3112 cut-off events. For 3158/3158 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 17171 event pairs, 361 based on Foata normal form. 264/3236 useless extension candidates. Maximal degree in co-relation 8908. Up to 2324 conditions per place. [2023-08-27 02:55:42,750 INFO L140 encePairwiseOnDemand]: 344/351 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-08-27 02:55:42,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 544 flow [2023-08-27 02:55:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 02:55:42,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2023-08-27 02:55:42,753 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 02:55:42,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 02:55:42,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:42,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 02:55:42,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,765 INFO L175 Difference]: Start difference. First operand has 73 places, 91 transitions, 601 flow. Second operand 3 states and 525 transitions. [2023-08-27 02:55:42,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 544 flow [2023-08-27 02:55:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 511 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-27 02:55:42,782 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 339 flow [2023-08-27 02:55:42,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=3, PETRI_FLOW=339, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-27 02:55:42,783 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2023-08-27 02:55:42,784 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 339 flow [2023-08-27 02:55:42,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:42,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:55:42,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:42,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1810976696, now seen corresponding path program 1 times [2023-08-27 02:55:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936701199] [2023-08-27 02:55:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:42,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936701199] [2023-08-27 02:55:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936701199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:42,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:42,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:55:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316690621] [2023-08-27 02:55:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:55:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:55:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:55:42,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 02:55:42,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:42,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:42,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 02:55:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:43,199 INFO L124 PetriNetUnfolderBase]: 1875/3442 cut-off events. [2023-08-27 02:55:43,199 INFO L125 PetriNetUnfolderBase]: For 3127/3127 co-relation queries the response was YES. [2023-08-27 02:55:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10735 conditions, 3442 events. 1875/3442 cut-off events. For 3127/3127 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19087 event pairs, 435 based on Foata normal form. 72/3414 useless extension candidates. Maximal degree in co-relation 9890. Up to 1545 conditions per place. [2023-08-27 02:55:43,218 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 105 selfloop transitions, 15 changer transitions 0/121 dead transitions. [2023-08-27 02:55:43,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 835 flow [2023-08-27 02:55:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:55:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:55:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 863 transitions. [2023-08-27 02:55:43,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173789173789173 [2023-08-27 02:55:43,221 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 863 transitions. [2023-08-27 02:55:43,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 863 transitions. [2023-08-27 02:55:43,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:43,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 863 transitions. [2023-08-27 02:55:43,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 351.0) internal successors, (2106), 6 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 351.0) internal successors, (2106), 6 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,227 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 339 flow. Second operand 5 states and 863 transitions. [2023-08-27 02:55:43,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 835 flow [2023-08-27 02:55:43,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 121 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:43,234 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 424 flow [2023-08-27 02:55:43,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2023-08-27 02:55:43,235 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 02:55:43,235 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 424 flow [2023-08-27 02:55:43,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.6) internal successors, (783), 5 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:43,235 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:55:43,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:55:43,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:43,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash -57190909, now seen corresponding path program 1 times [2023-08-27 02:55:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:43,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256311070] [2023-08-27 02:55:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:55:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:43,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256311070] [2023-08-27 02:55:43,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256311070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:43,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:43,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:43,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565077498] [2023-08-27 02:55:43,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:43,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:43,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:43,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:43,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:43,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:43,529 INFO L124 PetriNetUnfolderBase]: 1660/3019 cut-off events. [2023-08-27 02:55:43,529 INFO L125 PetriNetUnfolderBase]: For 4407/4411 co-relation queries the response was YES. [2023-08-27 02:55:43,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9755 conditions, 3019 events. 1660/3019 cut-off events. For 4407/4411 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16065 event pairs, 689 based on Foata normal form. 4/2941 useless extension candidates. Maximal degree in co-relation 7328. Up to 1671 conditions per place. [2023-08-27 02:55:43,542 INFO L140 encePairwiseOnDemand]: 347/351 looper letters, 91 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-27 02:55:43,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 799 flow [2023-08-27 02:55:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-27 02:55:43,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194681861348528 [2023-08-27 02:55:43,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-27 02:55:43,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-27 02:55:43,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:43,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-27 02:55:43,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,548 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 424 flow. Second operand 3 states and 547 transitions. [2023-08-27 02:55:43,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 799 flow [2023-08-27 02:55:43,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 761 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-27 02:55:43,557 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 410 flow [2023-08-27 02:55:43,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2023-08-27 02:55:43,557 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 02:55:43,557 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 410 flow [2023-08-27 02:55:43,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:43,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:55:43,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:55:43,558 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:43,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:43,558 INFO L85 PathProgramCache]: Analyzing trace with hash -57190908, now seen corresponding path program 1 times [2023-08-27 02:55:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:43,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381357032] [2023-08-27 02:55:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:43,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:43,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381357032] [2023-08-27 02:55:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381357032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:55:43,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111660248] [2023-08-27 02:55:43,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:43,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:55:43,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:55:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:55:43,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 351 [2023-08-27 02:55:43,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:43,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 351 [2023-08-27 02:55:43,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:43,834 INFO L124 PetriNetUnfolderBase]: 1493/2688 cut-off events. [2023-08-27 02:55:43,834 INFO L125 PetriNetUnfolderBase]: For 3640/3652 co-relation queries the response was YES. [2023-08-27 02:55:43,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8763 conditions, 2688 events. 1493/2688 cut-off events. For 3640/3652 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13637 event pairs, 419 based on Foata normal form. 62/2726 useless extension candidates. Maximal degree in co-relation 8090. Up to 2628 conditions per place. [2023-08-27 02:55:43,849 INFO L140 encePairwiseOnDemand]: 349/351 looper letters, 72 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-27 02:55:43,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 594 flow [2023-08-27 02:55:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:55:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:55:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-08-27 02:55:43,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071225071225072 [2023-08-27 02:55:43,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-08-27 02:55:43,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-08-27 02:55:43,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:43,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-08-27 02:55:43,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,855 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 410 flow. Second operand 3 states and 534 transitions. [2023-08-27 02:55:43,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 594 flow [2023-08-27 02:55:43,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:43,862 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 403 flow [2023-08-27 02:55:43,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-27 02:55:43,864 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 02:55:43,864 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 403 flow [2023-08-27 02:55:43,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:43,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:43,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:43,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:55:43,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:43,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash -18492030, now seen corresponding path program 1 times [2023-08-27 02:55:43,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:43,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710673433] [2023-08-27 02:55:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:43,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:44,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:44,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710673433] [2023-08-27 02:55:44,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710673433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:44,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:44,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 02:55:44,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129030540] [2023-08-27 02:55:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:44,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:55:44,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:55:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:55:44,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 351 [2023-08-27 02:55:44,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 403 flow. Second operand has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:44,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:44,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 351 [2023-08-27 02:55:44,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:45,282 INFO L124 PetriNetUnfolderBase]: 2093/3753 cut-off events. [2023-08-27 02:55:45,282 INFO L125 PetriNetUnfolderBase]: For 4709/4709 co-relation queries the response was YES. [2023-08-27 02:55:45,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 3753 events. 2093/3753 cut-off events. For 4709/4709 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20571 event pairs, 643 based on Foata normal form. 0/3723 useless extension candidates. Maximal degree in co-relation 8553. Up to 2424 conditions per place. [2023-08-27 02:55:45,301 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 145 selfloop transitions, 11 changer transitions 0/157 dead transitions. [2023-08-27 02:55:45,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 157 transitions, 1139 flow [2023-08-27 02:55:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:55:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:55:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1324 transitions. [2023-08-27 02:55:45,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911997467553025 [2023-08-27 02:55:45,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1324 transitions. [2023-08-27 02:55:45,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1324 transitions. [2023-08-27 02:55:45,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:45,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1324 transitions. [2023-08-27 02:55:45,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.11111111111111) internal successors, (1324), 9 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:45,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:45,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:45,313 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 403 flow. Second operand 9 states and 1324 transitions. [2023-08-27 02:55:45,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 157 transitions, 1139 flow [2023-08-27 02:55:45,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 1138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:45,323 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 481 flow [2023-08-27 02:55:45,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=481, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2023-08-27 02:55:45,324 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-08-27 02:55:45,324 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 481 flow [2023-08-27 02:55:45,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:45,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:45,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:45,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:55:45,325 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:45,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:45,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1873595586, now seen corresponding path program 2 times [2023-08-27 02:55:45,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:45,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758084375] [2023-08-27 02:55:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:45,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:45,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:45,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758084375] [2023-08-27 02:55:45,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758084375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:45,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:55:45,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 02:55:45,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84630299] [2023-08-27 02:55:45,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:55:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:55:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:55:45,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 351 [2023-08-27 02:55:45,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 481 flow. Second operand has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:45,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:45,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 351 [2023-08-27 02:55:45,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:46,793 INFO L124 PetriNetUnfolderBase]: 2592/4636 cut-off events. [2023-08-27 02:55:46,793 INFO L125 PetriNetUnfolderBase]: For 5845/5845 co-relation queries the response was YES. [2023-08-27 02:55:46,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 4636 events. 2592/4636 cut-off events. For 5845/5845 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 26181 event pairs, 726 based on Foata normal form. 0/4600 useless extension candidates. Maximal degree in co-relation 11386. Up to 2300 conditions per place. [2023-08-27 02:55:46,820 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 144 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2023-08-27 02:55:46,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 161 transitions, 1233 flow [2023-08-27 02:55:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:55:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:55:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1324 transitions. [2023-08-27 02:55:46,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911997467553025 [2023-08-27 02:55:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1324 transitions. [2023-08-27 02:55:46,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1324 transitions. [2023-08-27 02:55:46,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:46,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1324 transitions. [2023-08-27 02:55:46,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.11111111111111) internal successors, (1324), 9 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:46,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:46,832 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 351.0) internal successors, (3510), 10 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:46,833 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 481 flow. Second operand 9 states and 1324 transitions. [2023-08-27 02:55:46,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 161 transitions, 1233 flow [2023-08-27 02:55:46,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1233 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:55:46,847 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 578 flow [2023-08-27 02:55:46,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2023-08-27 02:55:46,847 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2023-08-27 02:55:46,847 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 578 flow [2023-08-27 02:55:46,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:46,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:46,848 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:55:46,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:46,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash 140700202, now seen corresponding path program 1 times [2023-08-27 02:55:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891253855] [2023-08-27 02:55:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:46,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:46,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891253855] [2023-08-27 02:55:46,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891253855] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:46,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720252785] [2023-08-27 02:55:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:46,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:46,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:46,941 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) [2023-08-27 02:55:46,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:55:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:47,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 02:55:47,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:55:47,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:47,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720252785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:47,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:47,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-08-27 02:55:47,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892947548] [2023-08-27 02:55:47,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:55:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:47,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:55:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:55:47,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 351 [2023-08-27 02:55:47,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:47,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:47,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 351 [2023-08-27 02:55:47,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:47,607 INFO L124 PetriNetUnfolderBase]: 2561/4605 cut-off events. [2023-08-27 02:55:47,607 INFO L125 PetriNetUnfolderBase]: For 6999/6999 co-relation queries the response was YES. [2023-08-27 02:55:47,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15631 conditions, 4605 events. 2561/4605 cut-off events. For 6999/6999 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 25881 event pairs, 830 based on Foata normal form. 70/4633 useless extension candidates. Maximal degree in co-relation 12574. Up to 1659 conditions per place. [2023-08-27 02:55:47,628 INFO L140 encePairwiseOnDemand]: 341/351 looper letters, 129 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2023-08-27 02:55:47,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1240 flow [2023-08-27 02:55:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:55:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:55:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-08-27 02:55:47,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627594627594628 [2023-08-27 02:55:47,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-08-27 02:55:47,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-08-27 02:55:47,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:47,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-08-27 02:55:47,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:47,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:47,638 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 351.0) internal successors, (2808), 8 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:47,638 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 578 flow. Second operand 7 states and 1137 transitions. [2023-08-27 02:55:47,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1240 flow [2023-08-27 02:55:47,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 1212 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-27 02:55:47,655 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 741 flow [2023-08-27 02:55:47,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=741, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2023-08-27 02:55:47,656 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2023-08-27 02:55:47,656 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 741 flow [2023-08-27 02:55:47,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.0) internal successors, (906), 6 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:47,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:47,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:47,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 02:55:47,862 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,SelfDestructingSolverStorable15 [2023-08-27 02:55:47,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:47,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:47,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1185644252, now seen corresponding path program 2 times [2023-08-27 02:55:47,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:47,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142521912] [2023-08-27 02:55:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:47,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142521912] [2023-08-27 02:55:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142521912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603864339] [2023-08-27 02:55:47,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:55:47,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:47,966 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) [2023-08-27 02:55:47,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:55:48,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 02:55:48,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:55:48,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:55:48,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 02:55:48,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:48,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603864339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:48,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:48,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-27 02:55:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200346654] [2023-08-27 02:55:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:48,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:55:48,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:55:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:55:48,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 02:55:48,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:48,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:48,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 02:55:48,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:48,603 INFO L124 PetriNetUnfolderBase]: 2563/4623 cut-off events. [2023-08-27 02:55:48,603 INFO L125 PetriNetUnfolderBase]: For 8315/8315 co-relation queries the response was YES. [2023-08-27 02:55:48,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16272 conditions, 4623 events. 2563/4623 cut-off events. For 8315/8315 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25971 event pairs, 1484 based on Foata normal form. 30/4611 useless extension candidates. Maximal degree in co-relation 13110. Up to 3174 conditions per place. [2023-08-27 02:55:48,621 INFO L140 encePairwiseOnDemand]: 342/351 looper letters, 97 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2023-08-27 02:55:48,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 126 transitions, 1185 flow [2023-08-27 02:55:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:55:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:55:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 988 transitions. [2023-08-27 02:55:48,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2023-08-27 02:55:48,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 988 transitions. [2023-08-27 02:55:48,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 988 transitions. [2023-08-27 02:55:48,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:48,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 988 transitions. [2023-08-27 02:55:48,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:48,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:48,629 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:48,629 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 741 flow. Second operand 6 states and 988 transitions. [2023-08-27 02:55:48,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 126 transitions, 1185 flow [2023-08-27 02:55:48,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 126 transitions, 1171 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-27 02:55:48,649 INFO L231 Difference]: Finished difference. Result has 107 places, 93 transitions, 867 flow [2023-08-27 02:55:48,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=867, PETRI_PLACES=107, PETRI_TRANSITIONS=93} [2023-08-27 02:55:48,649 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2023-08-27 02:55:48,649 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 93 transitions, 867 flow [2023-08-27 02:55:48,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.8) internal successors, (789), 5 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:48,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:48,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:48,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 02:55:48,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:48,856 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:48,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:48,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1185643720, now seen corresponding path program 1 times [2023-08-27 02:55:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784277427] [2023-08-27 02:55:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:55:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784277427] [2023-08-27 02:55:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784277427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:55:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820726504] [2023-08-27 02:55:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:55:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:55:48,974 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) [2023-08-27 02:55:48,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 02:55:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:55:49,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:55:49,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:55:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:55:49,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:55:49,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820726504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:55:49,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:55:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-08-27 02:55:49,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329783955] [2023-08-27 02:55:49,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:55:49,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 02:55:49,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:55:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 02:55:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:55:49,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-27 02:55:49,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 93 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:49,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:55:49,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-27 02:55:49,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:55:49,731 INFO L124 PetriNetUnfolderBase]: 2683/4823 cut-off events. [2023-08-27 02:55:49,731 INFO L125 PetriNetUnfolderBase]: For 10220/10220 co-relation queries the response was YES. [2023-08-27 02:55:49,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17515 conditions, 4823 events. 2683/4823 cut-off events. For 10220/10220 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 26505 event pairs, 757 based on Foata normal form. 24/4811 useless extension candidates. Maximal degree in co-relation 14273. Up to 1622 conditions per place. [2023-08-27 02:55:49,760 INFO L140 encePairwiseOnDemand]: 343/351 looper letters, 158 selfloop transitions, 27 changer transitions 0/186 dead transitions. [2023-08-27 02:55:49,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 186 transitions, 1723 flow [2023-08-27 02:55:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:55:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:55:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1349 transitions. [2023-08-27 02:55:49,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804131054131054 [2023-08-27 02:55:49,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1349 transitions. [2023-08-27 02:55:49,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1349 transitions. [2023-08-27 02:55:49,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:55:49,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1349 transitions. [2023-08-27 02:55:49,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 168.625) internal successors, (1349), 8 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:49,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:49,770 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 351.0) internal successors, (3159), 9 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:49,770 INFO L175 Difference]: Start difference. First operand has 107 places, 93 transitions, 867 flow. Second operand 8 states and 1349 transitions. [2023-08-27 02:55:49,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 186 transitions, 1723 flow [2023-08-27 02:55:49,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 186 transitions, 1708 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-27 02:55:49,794 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 1027 flow [2023-08-27 02:55:49,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1027, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2023-08-27 02:55:49,795 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2023-08-27 02:55:49,795 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 1027 flow [2023-08-27 02:55:49,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:55:49,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:55:49,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:49,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 02:55:50,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 02:55:50,001 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:55:50,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:55:50,002 INFO L85 PathProgramCache]: Analyzing trace with hash 239237544, now seen corresponding path program 1 times [2023-08-27 02:55:50,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:55:50,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219528539] [2023-08-27 02:55:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:55:50,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:55:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:55:50,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 02:55:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:55:50,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 02:55:50,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 02:55:50,076 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 02:55:50,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 02:55:50,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 02:55:50,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 02:55:50,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 02:55:50,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 02:55:50,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 02:55:50,080 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:55:50,087 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:55:50,087 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:55:50,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:55:50 BasicIcfg [2023-08-27 02:55:50,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:55:50,151 INFO L158 Benchmark]: Toolchain (without parser) took 18924.01ms. Allocated memory was 360.7MB in the beginning and 780.1MB in the end (delta: 419.4MB). Free memory was 318.5MB in the beginning and 294.7MB in the end (delta: 23.8MB). Peak memory consumption was 444.2MB. Max. memory is 16.0GB. [2023-08-27 02:55:50,151 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 360.7MB. Free memory is still 337.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:55:50,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.69ms. Allocated memory is still 360.7MB. Free memory was 318.5MB in the beginning and 334.2MB in the end (delta: -15.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.0GB. [2023-08-27 02:55:50,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.64ms. Allocated memory is still 360.7MB. Free memory was 334.2MB in the beginning and 331.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:55:50,151 INFO L158 Benchmark]: Boogie Preprocessor took 29.41ms. Allocated memory is still 360.7MB. Free memory was 331.7MB in the beginning and 329.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:55:50,151 INFO L158 Benchmark]: RCFGBuilder took 544.00ms. Allocated memory is still 360.7MB. Free memory was 329.6MB in the beginning and 311.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:55:50,151 INFO L158 Benchmark]: TraceAbstraction took 17725.04ms. Allocated memory was 360.7MB in the beginning and 780.1MB in the end (delta: 419.4MB). Free memory was 310.7MB in the beginning and 294.7MB in the end (delta: 16.0MB). Peak memory consumption was 435.5MB. Max. memory is 16.0GB. [2023-08-27 02:55:50,152 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 360.7MB. Free memory is still 337.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 555.69ms. Allocated memory is still 360.7MB. Free memory was 318.5MB in the beginning and 334.2MB in the end (delta: -15.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.64ms. Allocated memory is still 360.7MB. Free memory was 334.2MB in the beginning and 331.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.41ms. Allocated memory is still 360.7MB. Free memory was 331.7MB in the beginning and 329.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 544.00ms. Allocated memory is still 360.7MB. Free memory was 329.6MB in the beginning and 311.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 17725.04ms. Allocated memory was 360.7MB in the beginning and 780.1MB in the end (delta: 419.4MB). Free memory was 310.7MB in the beginning and 294.7MB in the end (delta: 16.0MB). Peak memory consumption was 435.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 166 PlacesBefore, 44 PlacesAfterwards, 171 TransitionsBefore, 42 TransitionsAfterwards, 10550 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 7 ChoiceCompositions, 169 TotalNumberOfCompositions, 14717 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11495, independent: 11264, independent conditional: 0, independent unconditional: 11264, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6215, independent: 6152, independent conditional: 0, independent unconditional: 6152, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11495, independent: 5112, independent conditional: 0, independent unconditional: 5112, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 6215, unknown conditional: 0, unknown unconditional: 6215] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 292, Positive conditional cache size: 0, Positive unconditional cache size: 292, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=9, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=10, top=0] [L991] COND TRUE 1 i<(800) [L994] 1 tmp = __VERIFIER_nondet_uint() [L995] CALL 1 assume_abort_if_not(tmp < (800)) [L23] COND FALSE 1 !(!cond) [L995] RET 1 assume_abort_if_not(tmp < (800)) [L996] CALL, EXPR 1 push(arr,tmp) [L1005] 2 int i; [L1006] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L961] COND FALSE 1 !(top==(800)) [L968] CALL, EXPR 1 get_top() [L953] 1 return top; [L968] RET, EXPR 1 get_top() [L968] 1 stack[get_top()] = x [L969] CALL 1 inc_top() [L945] 1 top++ [L969] RET 1 inc_top() [L971] 1 return 0; [L996] RET, EXPR 1 push(arr,tmp) [L996] COND FALSE 1 !(push(arr,tmp)==(-1)) [L998] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=799, top=1] [L991] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=799, top=1] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND FALSE 2 !(get_top()==0) [L982] CALL 2 dec_top() [L949] 2 top-- [L982] RET 2 dec_top() [L983] CALL, EXPR 2 get_top() [L953] 2 return top; [L983] RET, EXPR 2 get_top() [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1011] RET, EXPR 2 pop(arr) [L1011] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1006] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); [L1011] RET, EXPR 2 pop(arr) [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L1012] CALL 2 error() [L941] CALL 2 reach_error() [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\read(__PRETTY_FUNCTION__)={3201:3202}, arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 945]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 945]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 991]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 949]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 949]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 294 locations, 22 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: 17.5s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1043 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1043 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3197 IncrementalHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 0 mSDtfsCounter, 3197 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1027occurred in iteration=18, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 413 NumberOfCodeBlocks, 404 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 2044 SizeOfPredicates, 10 NumberOfNonLiveVariables, 956 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 23 InterpolantComputations, 17 PerfectInterpolantSequences, 54/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-27 02:55:50,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...